/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/triangular-longer-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-231806ee773fbd0554de777ff4074f5592c67ff4-231806e [2021-10-13 22:31:51,167 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 22:31:51,169 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 22:31:51,209 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-13 22:31:51,249 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 22:31:51,249 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 22:31:51,249 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 22:31:51,251 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-10-13 22:31:51,274 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 22:31:51,275 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 22:31:51,275 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 22:31:51,275 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 22:31:51,276 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 22:31:51,276 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 22:31:51,276 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 22:31:51,276 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 22:31:51,276 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 22:31:51,276 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 22:31:51,276 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 22:31:51,276 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 22:31:51,276 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 22:31:51,276 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 22:31:51,276 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 22:31:51,277 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 22:31:51,277 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 22:31:51,277 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 22:31:51,277 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 22:31:51,277 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 22:31:51,277 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 22:31:51,277 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-10-13 22:31:51,277 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 22:31:51,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 22:31:51,277 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 22:31:51,277 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 22:31:51,277 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 22:31:51,277 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 22:31:51,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 22:31:51,278 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-13 22:31:51,278 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 22:31:51,278 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-13 22:31:51,425 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 22:31:51,440 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 22:31:51,441 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 22:31:51,442 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 22:31:51,443 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 22:31:51,444 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-longer-1.i [2021-10-13 22:31:51,492 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1645eb3d6/7c11750822cb4b279fd88c05c7fcd683/FLAG68a822f1d [2021-10-13 22:31:51,877 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 22:31:51,877 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longer-1.i [2021-10-13 22:31:51,886 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1645eb3d6/7c11750822cb4b279fd88c05c7fcd683/FLAG68a822f1d [2021-10-13 22:31:51,903 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1645eb3d6/7c11750822cb4b279fd88c05c7fcd683 [2021-10-13 22:31:51,906 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 22:31:51,908 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-13 22:31:51,911 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 22:31:51,911 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 22:31:51,914 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 22:31:51,914 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:31:51" (1/1) ... [2021-10-13 22:31:51,915 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a89376d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:31:51, skipping insertion in model container [2021-10-13 22:31:51,915 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:31:51" (1/1) ... [2021-10-13 22:31:51,919 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 22:31:51,959 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 22:31:52,190 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longer-1.i[30961,30974] [2021-10-13 22:31:52,194 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 22:31:52,200 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 22:31:52,234 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longer-1.i[30961,30974] [2021-10-13 22:31:52,234 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 22:31:52,259 INFO L208 MainTranslator]: Completed translation [2021-10-13 22:31:52,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:31:52 WrapperNode [2021-10-13 22:31:52,260 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 22:31:52,261 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 22:31:52,261 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 22:31:52,261 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 22:31:52,266 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:31:52" (1/1) ... [2021-10-13 22:31:52,286 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:31:52" (1/1) ... [2021-10-13 22:31:52,301 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 22:31:52,302 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 22:31:52,302 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 22:31:52,302 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 22:31:52,307 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:31:52" (1/1) ... [2021-10-13 22:31:52,307 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:31:52" (1/1) ... [2021-10-13 22:31:52,311 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:31:52" (1/1) ... [2021-10-13 22:31:52,311 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:31:52" (1/1) ... [2021-10-13 22:31:52,325 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:31:52" (1/1) ... [2021-10-13 22:31:52,328 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:31:52" (1/1) ... [2021-10-13 22:31:52,329 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:31:52" (1/1) ... [2021-10-13 22:31:52,330 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 22:31:52,331 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 22:31:52,331 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 22:31:52,331 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 22:31:52,334 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:31:52" (1/1) ... [2021-10-13 22:31:52,339 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 22:31:52,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:31:52,356 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 22:31:52,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 22:31:52,394 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2021-10-13 22:31:52,396 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2021-10-13 22:31:52,396 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2021-10-13 22:31:52,396 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2021-10-13 22:31:52,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 22:31:52,396 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-13 22:31:52,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 22:31:52,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 22:31:52,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 22:31:52,397 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-13 22:31:52,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 22:31:52,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 22:31:52,398 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-13 22:31:52,602 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 22:31:52,602 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-13 22:31:52,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:31:52 BoogieIcfgContainer [2021-10-13 22:31:52,603 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 22:31:52,604 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 22:31:52,604 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 22:31:52,606 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 22:31:52,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:31:51" (1/3) ... [2021-10-13 22:31:52,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20d9dd7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:31:52, skipping insertion in model container [2021-10-13 22:31:52,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:31:52" (2/3) ... [2021-10-13 22:31:52,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20d9dd7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:31:52, skipping insertion in model container [2021-10-13 22:31:52,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:31:52" (3/3) ... [2021-10-13 22:31:52,608 INFO L111 eAbstractionObserver]: Analyzing ICFG triangular-longer-1.i [2021-10-13 22:31:52,611 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-13 22:31:52,612 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 22:31:52,612 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 22:31:52,612 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-13 22:31:52,627 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:31:52,627 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:31:52,627 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:31:52,627 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:31:52,628 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:31:52,628 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:31:52,628 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:31:52,628 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:31:52,628 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:31:52,628 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:31:52,628 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:31:52,628 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:31:52,628 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:31:52,629 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:31:52,629 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:31:52,630 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:31:52,630 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:31:52,630 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:31:52,630 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:31:52,630 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:31:52,631 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:31:52,631 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:31:52,631 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:31:52,631 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:31:52,631 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:31:52,631 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:31:52,631 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:31:52,631 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:31:52,632 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:31:52,632 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:31:52,632 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:31:52,632 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:31:52,633 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:31:52,633 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:31:52,633 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:31:52,633 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:31:52,633 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:31:52,633 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:31:52,633 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:31:52,633 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:31:52,633 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:31:52,633 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:31:52,634 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:31:52,634 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:31:52,634 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:31:52,634 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:31:52,634 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:31:52,634 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:31:52,634 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:31:52,634 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:31:52,635 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:31:52,635 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:31:52,635 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:31:52,635 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:31:52,636 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:31:52,636 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:31:52,641 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:31:52,641 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:31:52,641 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:31:52,641 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:31:52,641 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:31:52,641 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:31:52,644 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:31:52,644 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:31:52,645 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:31:52,645 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:31:52,645 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:31:52,645 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:31:52,646 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-13 22:31:52,671 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 22:31:52,675 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 22:31:52,676 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-13 22:31:52,682 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 68 places, 66 transitions, 142 flow [2021-10-13 22:31:52,741 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 780 states, 779 states have (on average 2.934531450577664) internal successors, (2286), 779 states have internal predecessors, (2286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:52,744 INFO L276 IsEmpty]: Start isEmpty. Operand has 780 states, 779 states have (on average 2.934531450577664) internal successors, (2286), 779 states have internal predecessors, (2286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:52,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-13 22:31:52,757 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:31:52,758 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:31:52,758 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:31:52,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:31:52,764 INFO L82 PathProgramCache]: Analyzing trace with hash 2112281486, now seen corresponding path program 1 times [2021-10-13 22:31:52,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:31:52,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783923228] [2021-10-13 22:31:52,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:31:52,771 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:31:52,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:53,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:53,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:31:53,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783923228] [2021-10-13 22:31:53,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783923228] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 22:31:53,124 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 22:31:53,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-13 22:31:53,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78068956] [2021-10-13 22:31:53,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 22:31:53,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:31:53,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 22:31:53,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-13 22:31:53,147 INFO L87 Difference]: Start difference. First operand has 780 states, 779 states have (on average 2.934531450577664) internal successors, (2286), 779 states have internal predecessors, (2286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:53,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:31:53,251 INFO L93 Difference]: Finished difference Result 1582 states and 4288 transitions. [2021-10-13 22:31:53,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 22:31:53,253 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-10-13 22:31:53,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:31:53,267 INFO L225 Difference]: With dead ends: 1582 [2021-10-13 22:31:53,267 INFO L226 Difference]: Without dead ends: 1248 [2021-10-13 22:31:53,268 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 60.6ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-13 22:31:53,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1248 states. [2021-10-13 22:31:53,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1248 to 800. [2021-10-13 22:31:53,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 800 states, 799 states have (on average 2.728410513141427) internal successors, (2180), 799 states have internal predecessors, (2180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:53,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 2180 transitions. [2021-10-13 22:31:53,334 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 2180 transitions. Word has length 32 [2021-10-13 22:31:53,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:31:53,334 INFO L470 AbstractCegarLoop]: Abstraction has 800 states and 2180 transitions. [2021-10-13 22:31:53,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:53,334 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 2180 transitions. [2021-10-13 22:31:53,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-13 22:31:53,336 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:31:53,336 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:31:53,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 22:31:53,337 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:31:53,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:31:53,337 INFO L82 PathProgramCache]: Analyzing trace with hash 482644881, now seen corresponding path program 1 times [2021-10-13 22:31:53,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:31:53,338 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422794502] [2021-10-13 22:31:53,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:31:53,338 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:31:53,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:53,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:53,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:31:53,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422794502] [2021-10-13 22:31:53,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422794502] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 22:31:53,411 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 22:31:53,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-13 22:31:53,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101229649] [2021-10-13 22:31:53,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 22:31:53,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:31:53,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 22:31:53,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-13 22:31:53,413 INFO L87 Difference]: Start difference. First operand 800 states and 2180 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:53,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:31:53,481 INFO L93 Difference]: Finished difference Result 1302 states and 3436 transitions. [2021-10-13 22:31:53,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 22:31:53,482 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-10-13 22:31:53,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:31:53,486 INFO L225 Difference]: With dead ends: 1302 [2021-10-13 22:31:53,486 INFO L226 Difference]: Without dead ends: 920 [2021-10-13 22:31:53,487 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 45.4ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-13 22:31:53,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2021-10-13 22:31:53,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 864. [2021-10-13 22:31:53,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 864 states, 863 states have (on average 2.6882966396292005) internal successors, (2320), 863 states have internal predecessors, (2320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:53,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 2320 transitions. [2021-10-13 22:31:53,505 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 2320 transitions. Word has length 36 [2021-10-13 22:31:53,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:31:53,505 INFO L470 AbstractCegarLoop]: Abstraction has 864 states and 2320 transitions. [2021-10-13 22:31:53,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:53,506 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 2320 transitions. [2021-10-13 22:31:53,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-13 22:31:53,508 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:31:53,509 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:31:53,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 22:31:53,509 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:31:53,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:31:53,515 INFO L82 PathProgramCache]: Analyzing trace with hash -1828771722, now seen corresponding path program 1 times [2021-10-13 22:31:53,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:31:53,515 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076862988] [2021-10-13 22:31:53,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:31:53,516 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:31:53,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:53,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:53,611 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:31:53,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076862988] [2021-10-13 22:31:53,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076862988] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 22:31:53,612 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 22:31:53,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-13 22:31:53,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691808293] [2021-10-13 22:31:53,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 22:31:53,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:31:53,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 22:31:53,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-13 22:31:53,616 INFO L87 Difference]: Start difference. First operand 864 states and 2320 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:53,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:31:53,748 INFO L93 Difference]: Finished difference Result 1304 states and 3456 transitions. [2021-10-13 22:31:53,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 22:31:53,749 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-10-13 22:31:53,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:31:53,753 INFO L225 Difference]: With dead ends: 1304 [2021-10-13 22:31:53,753 INFO L226 Difference]: Without dead ends: 1044 [2021-10-13 22:31:53,753 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 91.6ms TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2021-10-13 22:31:53,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1044 states. [2021-10-13 22:31:53,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1044 to 876. [2021-10-13 22:31:53,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 875 states have (on average 2.7062857142857144) internal successors, (2368), 875 states have internal predecessors, (2368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:53,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 2368 transitions. [2021-10-13 22:31:53,770 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 2368 transitions. Word has length 40 [2021-10-13 22:31:53,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:31:53,770 INFO L470 AbstractCegarLoop]: Abstraction has 876 states and 2368 transitions. [2021-10-13 22:31:53,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:53,770 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 2368 transitions. [2021-10-13 22:31:53,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-13 22:31:53,772 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:31:53,773 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:31:53,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 22:31:53,773 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:31:53,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:31:53,774 INFO L82 PathProgramCache]: Analyzing trace with hash 550294988, now seen corresponding path program 2 times [2021-10-13 22:31:53,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:31:53,774 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997543790] [2021-10-13 22:31:53,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:31:53,774 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:31:53,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:53,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:53,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:31:53,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997543790] [2021-10-13 22:31:53,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997543790] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 22:31:53,883 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 22:31:53,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-13 22:31:53,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941113586] [2021-10-13 22:31:53,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 22:31:53,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:31:53,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 22:31:53,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-13 22:31:53,885 INFO L87 Difference]: Start difference. First operand 876 states and 2368 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:53,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:31:53,960 INFO L93 Difference]: Finished difference Result 1772 states and 4744 transitions. [2021-10-13 22:31:53,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 22:31:53,960 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-10-13 22:31:53,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:31:53,969 INFO L225 Difference]: With dead ends: 1772 [2021-10-13 22:31:53,973 INFO L226 Difference]: Without dead ends: 1505 [2021-10-13 22:31:53,974 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 52.9ms TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-10-13 22:31:53,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1505 states. [2021-10-13 22:31:53,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1505 to 975. [2021-10-13 22:31:53,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 975 states, 974 states have (on average 2.6981519507186857) internal successors, (2628), 974 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:53,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 2628 transitions. [2021-10-13 22:31:53,993 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 2628 transitions. Word has length 40 [2021-10-13 22:31:53,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:31:53,995 INFO L470 AbstractCegarLoop]: Abstraction has 975 states and 2628 transitions. [2021-10-13 22:31:53,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:53,995 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 2628 transitions. [2021-10-13 22:31:53,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-13 22:31:53,996 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:31:53,996 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:31:53,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 22:31:53,996 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:31:53,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:31:53,997 INFO L82 PathProgramCache]: Analyzing trace with hash -2026923248, now seen corresponding path program 3 times [2021-10-13 22:31:53,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:31:53,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684694709] [2021-10-13 22:31:53,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:31:53,997 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:31:54,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:54,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:54,078 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:31:54,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684694709] [2021-10-13 22:31:54,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684694709] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 22:31:54,078 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 22:31:54,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-13 22:31:54,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730270193] [2021-10-13 22:31:54,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 22:31:54,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:31:54,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 22:31:54,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-13 22:31:54,079 INFO L87 Difference]: Start difference. First operand 975 states and 2628 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:54,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:31:54,161 INFO L93 Difference]: Finished difference Result 2211 states and 5878 transitions. [2021-10-13 22:31:54,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 22:31:54,161 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-10-13 22:31:54,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:31:54,168 INFO L225 Difference]: With dead ends: 2211 [2021-10-13 22:31:54,168 INFO L226 Difference]: Without dead ends: 1944 [2021-10-13 22:31:54,169 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 47.8ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-10-13 22:31:54,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1944 states. [2021-10-13 22:31:54,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1944 to 1127. [2021-10-13 22:31:54,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 1126 states have (on average 2.769982238010657) internal successors, (3119), 1126 states have internal predecessors, (3119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:54,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 3119 transitions. [2021-10-13 22:31:54,218 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 3119 transitions. Word has length 40 [2021-10-13 22:31:54,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:31:54,218 INFO L470 AbstractCegarLoop]: Abstraction has 1127 states and 3119 transitions. [2021-10-13 22:31:54,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:54,219 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 3119 transitions. [2021-10-13 22:31:54,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-13 22:31:54,220 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:31:54,220 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:31:54,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 22:31:54,220 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:31:54,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:31:54,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1961680958, now seen corresponding path program 4 times [2021-10-13 22:31:54,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:31:54,221 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437603229] [2021-10-13 22:31:54,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:31:54,221 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:31:54,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:54,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:54,307 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:31:54,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437603229] [2021-10-13 22:31:54,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437603229] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 22:31:54,307 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 22:31:54,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-13 22:31:54,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406925283] [2021-10-13 22:31:54,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 22:31:54,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:31:54,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 22:31:54,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-13 22:31:54,309 INFO L87 Difference]: Start difference. First operand 1127 states and 3119 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:54,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:31:54,416 INFO L93 Difference]: Finished difference Result 1671 states and 4527 transitions. [2021-10-13 22:31:54,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 22:31:54,416 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-10-13 22:31:54,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:31:54,420 INFO L225 Difference]: With dead ends: 1671 [2021-10-13 22:31:54,421 INFO L226 Difference]: Without dead ends: 1173 [2021-10-13 22:31:54,421 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 78.0ms TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-10-13 22:31:54,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2021-10-13 22:31:54,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 922. [2021-10-13 22:31:54,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 922 states, 921 states have (on average 2.732899022801303) internal successors, (2517), 921 states have internal predecessors, (2517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:54,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 922 states to 922 states and 2517 transitions. [2021-10-13 22:31:54,438 INFO L78 Accepts]: Start accepts. Automaton has 922 states and 2517 transitions. Word has length 40 [2021-10-13 22:31:54,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:31:54,438 INFO L470 AbstractCegarLoop]: Abstraction has 922 states and 2517 transitions. [2021-10-13 22:31:54,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:54,438 INFO L276 IsEmpty]: Start isEmpty. Operand 922 states and 2517 transitions. [2021-10-13 22:31:54,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-13 22:31:54,440 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:31:54,441 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:31:54,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-13 22:31:54,441 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:31:54,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:31:54,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1188275055, now seen corresponding path program 1 times [2021-10-13 22:31:54,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:31:54,444 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961029391] [2021-10-13 22:31:54,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:31:54,445 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:31:54,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:54,531 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:54,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:31:54,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961029391] [2021-10-13 22:31:54,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961029391] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:54,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239435162] [2021-10-13 22:31:54,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:31:54,532 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:54,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:31:54,533 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:31:54,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 22:31:54,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:54,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 22:31:54,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:31:54,768 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:54,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239435162] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:54,769 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:31:54,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-10-13 22:31:54,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821521565] [2021-10-13 22:31:54,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 22:31:54,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:31:54,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 22:31:54,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-13 22:31:54,771 INFO L87 Difference]: Start difference. First operand 922 states and 2517 transitions. Second operand has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:54,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:31:54,904 INFO L93 Difference]: Finished difference Result 1526 states and 4027 transitions. [2021-10-13 22:31:54,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 22:31:54,904 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-10-13 22:31:54,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:31:54,908 INFO L225 Difference]: With dead ends: 1526 [2021-10-13 22:31:54,908 INFO L226 Difference]: Without dead ends: 1256 [2021-10-13 22:31:54,909 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 89.3ms TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2021-10-13 22:31:54,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1256 states. [2021-10-13 22:31:54,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1256 to 1113. [2021-10-13 22:31:54,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1113 states, 1112 states have (on average 2.741007194244604) internal successors, (3048), 1112 states have internal predecessors, (3048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:54,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1113 states to 1113 states and 3048 transitions. [2021-10-13 22:31:54,936 INFO L78 Accepts]: Start accepts. Automaton has 1113 states and 3048 transitions. Word has length 45 [2021-10-13 22:31:54,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:31:54,937 INFO L470 AbstractCegarLoop]: Abstraction has 1113 states and 3048 transitions. [2021-10-13 22:31:54,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:54,937 INFO L276 IsEmpty]: Start isEmpty. Operand 1113 states and 3048 transitions. [2021-10-13 22:31:54,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-13 22:31:54,938 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:31:54,938 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:31:54,956 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 22:31:55,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:55,154 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:31:55,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:31:55,155 INFO L82 PathProgramCache]: Analyzing trace with hash 895709223, now seen corresponding path program 2 times [2021-10-13 22:31:55,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:31:55,155 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905464250] [2021-10-13 22:31:55,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:31:55,155 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:31:55,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:55,206 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:55,207 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:31:55,207 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905464250] [2021-10-13 22:31:55,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905464250] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:55,207 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603761409] [2021-10-13 22:31:55,207 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:31:55,207 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:55,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:31:55,208 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:31:55,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-13 22:31:55,280 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:31:55,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:31:55,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 22:31:55,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:31:55,415 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:55,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603761409] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:55,415 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:31:55,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2021-10-13 22:31:55,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291679337] [2021-10-13 22:31:55,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 22:31:55,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:31:55,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 22:31:55,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-10-13 22:31:55,420 INFO L87 Difference]: Start difference. First operand 1113 states and 3048 transitions. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:55,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:31:55,541 INFO L93 Difference]: Finished difference Result 2408 states and 6431 transitions. [2021-10-13 22:31:55,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 22:31:55,542 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-10-13 22:31:55,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:31:55,549 INFO L225 Difference]: With dead ends: 2408 [2021-10-13 22:31:55,549 INFO L226 Difference]: Without dead ends: 2138 [2021-10-13 22:31:55,549 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 81.5ms TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2021-10-13 22:31:55,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2138 states. [2021-10-13 22:31:55,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2138 to 1293. [2021-10-13 22:31:55,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1293 states, 1292 states have (on average 2.791795665634675) internal successors, (3607), 1292 states have internal predecessors, (3607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:55,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1293 states to 1293 states and 3607 transitions. [2021-10-13 22:31:55,608 INFO L78 Accepts]: Start accepts. Automaton has 1293 states and 3607 transitions. Word has length 45 [2021-10-13 22:31:55,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:31:55,608 INFO L470 AbstractCegarLoop]: Abstraction has 1293 states and 3607 transitions. [2021-10-13 22:31:55,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:55,609 INFO L276 IsEmpty]: Start isEmpty. Operand 1293 states and 3607 transitions. [2021-10-13 22:31:55,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-13 22:31:55,610 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:31:55,610 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:31:55,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-13 22:31:55,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-10-13 22:31:55,826 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:31:55,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:31:55,826 INFO L82 PathProgramCache]: Analyzing trace with hash 960951513, now seen corresponding path program 3 times [2021-10-13 22:31:55,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:31:55,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452895160] [2021-10-13 22:31:55,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:31:55,826 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:31:55,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:55,897 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:55,897 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:31:55,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452895160] [2021-10-13 22:31:55,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452895160] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:55,898 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585659821] [2021-10-13 22:31:55,898 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:31:55,898 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:55,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:31:55,899 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:31:55,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-13 22:31:55,974 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-13 22:31:55,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:31:55,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 22:31:55,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:31:56,082 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:56,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1585659821] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:56,083 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:31:56,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-10-13 22:31:56,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358553681] [2021-10-13 22:31:56,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 22:31:56,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:31:56,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 22:31:56,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-13 22:31:56,085 INFO L87 Difference]: Start difference. First operand 1293 states and 3607 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:56,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:31:56,264 INFO L93 Difference]: Finished difference Result 2196 states and 5861 transitions. [2021-10-13 22:31:56,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 22:31:56,265 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-10-13 22:31:56,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:31:56,270 INFO L225 Difference]: With dead ends: 2196 [2021-10-13 22:31:56,270 INFO L226 Difference]: Without dead ends: 1621 [2021-10-13 22:31:56,270 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 136.7ms TimeCoverageRelationStatistics Valid=132, Invalid=374, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:31:56,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1621 states. [2021-10-13 22:31:56,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1621 to 1328. [2021-10-13 22:31:56,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1328 states, 1327 states have (on average 2.7754333082140166) internal successors, (3683), 1327 states have internal predecessors, (3683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:56,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1328 states to 1328 states and 3683 transitions. [2021-10-13 22:31:56,291 INFO L78 Accepts]: Start accepts. Automaton has 1328 states and 3683 transitions. Word has length 45 [2021-10-13 22:31:56,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:31:56,292 INFO L470 AbstractCegarLoop]: Abstraction has 1328 states and 3683 transitions. [2021-10-13 22:31:56,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:56,292 INFO L276 IsEmpty]: Start isEmpty. Operand 1328 states and 3683 transitions. [2021-10-13 22:31:56,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-10-13 22:31:56,293 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:31:56,293 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:31:56,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-13 22:31:56,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:56,508 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:31:56,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:31:56,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1472791299, now seen corresponding path program 1 times [2021-10-13 22:31:56,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:31:56,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575552377] [2021-10-13 22:31:56,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:31:56,508 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:31:56,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:56,589 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:56,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:31:56,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575552377] [2021-10-13 22:31:56,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575552377] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:56,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897270984] [2021-10-13 22:31:56,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:31:56,590 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:56,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:31:56,590 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:31:56,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-13 22:31:56,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:56,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 22:31:56,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:31:56,882 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:56,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897270984] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:56,882 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:31:56,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2021-10-13 22:31:56,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693788532] [2021-10-13 22:31:56,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 22:31:56,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:31:56,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 22:31:56,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-13 22:31:56,883 INFO L87 Difference]: Start difference. First operand 1328 states and 3683 transitions. Second operand has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:57,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:31:57,012 INFO L93 Difference]: Finished difference Result 2068 states and 5483 transitions. [2021-10-13 22:31:57,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 22:31:57,012 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-10-13 22:31:57,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:31:57,018 INFO L225 Difference]: With dead ends: 2068 [2021-10-13 22:31:57,018 INFO L226 Difference]: Without dead ends: 1734 [2021-10-13 22:31:57,019 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 105.4ms TimeCoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2021-10-13 22:31:57,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1734 states. [2021-10-13 22:31:57,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1734 to 1413. [2021-10-13 22:31:57,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1413 states, 1412 states have (on average 2.7287535410764874) internal successors, (3853), 1412 states have internal predecessors, (3853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:57,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1413 states to 1413 states and 3853 transitions. [2021-10-13 22:31:57,044 INFO L78 Accepts]: Start accepts. Automaton has 1413 states and 3853 transitions. Word has length 50 [2021-10-13 22:31:57,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:31:57,044 INFO L470 AbstractCegarLoop]: Abstraction has 1413 states and 3853 transitions. [2021-10-13 22:31:57,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:57,044 INFO L276 IsEmpty]: Start isEmpty. Operand 1413 states and 3853 transitions. [2021-10-13 22:31:57,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-10-13 22:31:57,046 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:31:57,046 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:31:57,064 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-13 22:31:57,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:57,259 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:31:57,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:31:57,260 INFO L82 PathProgramCache]: Analyzing trace with hash -2040070847, now seen corresponding path program 2 times [2021-10-13 22:31:57,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:31:57,260 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301731332] [2021-10-13 22:31:57,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:31:57,260 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:31:57,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:57,326 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:57,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:31:57,326 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301731332] [2021-10-13 22:31:57,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301731332] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:57,326 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9315127] [2021-10-13 22:31:57,326 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:31:57,326 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:57,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:31:57,327 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:31:57,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-13 22:31:57,445 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:31:57,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:31:57,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 22:31:57,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:31:57,592 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:57,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [9315127] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:57,592 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:31:57,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-10-13 22:31:57,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865843797] [2021-10-13 22:31:57,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 22:31:57,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:31:57,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 22:31:57,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-10-13 22:31:57,595 INFO L87 Difference]: Start difference. First operand 1413 states and 3853 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:57,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:31:57,684 INFO L93 Difference]: Finished difference Result 2061 states and 5277 transitions. [2021-10-13 22:31:57,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 22:31:57,685 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-10-13 22:31:57,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:31:57,691 INFO L225 Difference]: With dead ends: 2061 [2021-10-13 22:31:57,691 INFO L226 Difference]: Without dead ends: 1791 [2021-10-13 22:31:57,691 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 59.7ms TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-10-13 22:31:57,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1791 states. [2021-10-13 22:31:57,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1791 to 1428. [2021-10-13 22:31:57,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1427 states have (on average 2.721093202522775) internal successors, (3883), 1427 states have internal predecessors, (3883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:57,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 3883 transitions. [2021-10-13 22:31:57,717 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 3883 transitions. Word has length 50 [2021-10-13 22:31:57,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:31:57,718 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 3883 transitions. [2021-10-13 22:31:57,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:57,718 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 3883 transitions. [2021-10-13 22:31:57,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-10-13 22:31:57,720 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:31:57,720 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:31:57,737 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-10-13 22:31:57,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-10-13 22:31:57,936 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:31:57,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:31:57,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1907955151, now seen corresponding path program 3 times [2021-10-13 22:31:57,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:31:57,937 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196817181] [2021-10-13 22:31:57,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:31:57,937 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:31:57,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:58,006 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:58,007 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:31:58,007 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196817181] [2021-10-13 22:31:58,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196817181] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:58,007 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817465623] [2021-10-13 22:31:58,007 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:31:58,007 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:58,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:31:58,008 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:31:58,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-13 22:31:58,148 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-13 22:31:58,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:31:58,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 22:31:58,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:31:58,295 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:58,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817465623] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:58,296 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:31:58,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2021-10-13 22:31:58,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084814363] [2021-10-13 22:31:58,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 22:31:58,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:31:58,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 22:31:58,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-13 22:31:58,297 INFO L87 Difference]: Start difference. First operand 1428 states and 3883 transitions. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:58,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:31:58,447 INFO L93 Difference]: Finished difference Result 2006 states and 5197 transitions. [2021-10-13 22:31:58,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 22:31:58,447 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-10-13 22:31:58,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:31:58,451 INFO L225 Difference]: With dead ends: 2006 [2021-10-13 22:31:58,451 INFO L226 Difference]: Without dead ends: 1736 [2021-10-13 22:31:58,452 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 107.6ms TimeCoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2021-10-13 22:31:58,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1736 states. [2021-10-13 22:31:58,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1736 to 1428. [2021-10-13 22:31:58,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1427 states have (on average 2.7245970567624385) internal successors, (3888), 1427 states have internal predecessors, (3888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:58,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 3888 transitions. [2021-10-13 22:31:58,476 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 3888 transitions. Word has length 50 [2021-10-13 22:31:58,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:31:58,476 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 3888 transitions. [2021-10-13 22:31:58,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:58,476 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 3888 transitions. [2021-10-13 22:31:58,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-10-13 22:31:58,478 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:31:58,478 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:31:58,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-13 22:31:58,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:58,693 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:31:58,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:31:58,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1930629695, now seen corresponding path program 4 times [2021-10-13 22:31:58,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:31:58,694 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621042516] [2021-10-13 22:31:58,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:31:58,694 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:31:58,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:58,747 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:58,747 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:31:58,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621042516] [2021-10-13 22:31:58,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621042516] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:58,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735526078] [2021-10-13 22:31:58,748 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:31:58,748 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:58,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:31:58,749 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:31:58,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-13 22:31:58,894 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:31:58,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:31:58,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 22:31:58,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:31:59,005 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:59,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735526078] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:59,006 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:31:59,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-10-13 22:31:59,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773301688] [2021-10-13 22:31:59,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 22:31:59,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:31:59,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 22:31:59,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-10-13 22:31:59,007 INFO L87 Difference]: Start difference. First operand 1428 states and 3888 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:59,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:31:59,131 INFO L93 Difference]: Finished difference Result 2798 states and 7421 transitions. [2021-10-13 22:31:59,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 22:31:59,131 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-10-13 22:31:59,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:31:59,136 INFO L225 Difference]: With dead ends: 2798 [2021-10-13 22:31:59,136 INFO L226 Difference]: Without dead ends: 2528 [2021-10-13 22:31:59,136 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 85.2ms TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-10-13 22:31:59,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2528 states. [2021-10-13 22:31:59,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2528 to 1608. [2021-10-13 22:31:59,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1608 states, 1607 states have (on average 2.7672682016179215) internal successors, (4447), 1607 states have internal predecessors, (4447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:59,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1608 states to 1608 states and 4447 transitions. [2021-10-13 22:31:59,165 INFO L78 Accepts]: Start accepts. Automaton has 1608 states and 4447 transitions. Word has length 50 [2021-10-13 22:31:59,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:31:59,165 INFO L470 AbstractCegarLoop]: Abstraction has 1608 states and 4447 transitions. [2021-10-13 22:31:59,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:59,165 INFO L276 IsEmpty]: Start isEmpty. Operand 1608 states and 4447 transitions. [2021-10-13 22:31:59,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-10-13 22:31:59,167 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:31:59,167 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:31:59,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-13 22:31:59,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:59,374 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:31:59,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:31:59,374 INFO L82 PathProgramCache]: Analyzing trace with hash 1995871985, now seen corresponding path program 5 times [2021-10-13 22:31:59,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:31:59,374 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960051971] [2021-10-13 22:31:59,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:31:59,374 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:31:59,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:59,422 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:59,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:31:59,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960051971] [2021-10-13 22:31:59,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960051971] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:59,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813017348] [2021-10-13 22:31:59,423 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:31:59,423 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:59,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:31:59,423 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:31:59,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-13 22:31:59,577 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:31:59,577 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:31:59,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 22:31:59,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:31:59,722 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:59,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813017348] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:59,723 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:31:59,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2021-10-13 22:31:59,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464344250] [2021-10-13 22:31:59,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 22:31:59,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:31:59,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 22:31:59,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-13 22:31:59,724 INFO L87 Difference]: Start difference. First operand 1608 states and 4447 transitions. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:59,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:31:59,907 INFO L93 Difference]: Finished difference Result 2285 states and 6121 transitions. [2021-10-13 22:31:59,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 22:31:59,908 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-10-13 22:31:59,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:31:59,911 INFO L225 Difference]: With dead ends: 2285 [2021-10-13 22:31:59,911 INFO L226 Difference]: Without dead ends: 1706 [2021-10-13 22:31:59,911 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 126.6ms TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2021-10-13 22:31:59,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1706 states. [2021-10-13 22:31:59,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1706 to 1313. [2021-10-13 22:31:59,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1313 states, 1312 states have (on average 2.7271341463414633) internal successors, (3578), 1312 states have internal predecessors, (3578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:59,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1313 states to 1313 states and 3578 transitions. [2021-10-13 22:31:59,933 INFO L78 Accepts]: Start accepts. Automaton has 1313 states and 3578 transitions. Word has length 50 [2021-10-13 22:31:59,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:31:59,933 INFO L470 AbstractCegarLoop]: Abstraction has 1313 states and 3578 transitions. [2021-10-13 22:31:59,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:59,934 INFO L276 IsEmpty]: Start isEmpty. Operand 1313 states and 3578 transitions. [2021-10-13 22:31:59,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-10-13 22:31:59,935 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:31:59,935 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:31:59,957 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-10-13 22:32:00,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-10-13 22:32:00,153 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:00,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:00,154 INFO L82 PathProgramCache]: Analyzing trace with hash -98524776, now seen corresponding path program 6 times [2021-10-13 22:32:00,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:00,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180972174] [2021-10-13 22:32:00,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:00,154 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:00,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:00,209 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:00,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:00,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180972174] [2021-10-13 22:32:00,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180972174] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:00,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333300176] [2021-10-13 22:32:00,209 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:32:00,209 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:00,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:00,210 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:00,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-13 22:32:00,383 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-13 22:32:00,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:00,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 22:32:00,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:00,531 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:00,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333300176] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:00,532 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:00,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2021-10-13 22:32:00,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690342534] [2021-10-13 22:32:00,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 22:32:00,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:00,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 22:32:00,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-13 22:32:00,533 INFO L87 Difference]: Start difference. First operand 1313 states and 3578 transitions. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:00,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:00,667 INFO L93 Difference]: Finished difference Result 1931 states and 5017 transitions. [2021-10-13 22:32:00,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 22:32:00,667 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-10-13 22:32:00,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:00,670 INFO L225 Difference]: With dead ends: 1931 [2021-10-13 22:32:00,670 INFO L226 Difference]: Without dead ends: 1661 [2021-10-13 22:32:00,670 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 96.2ms TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:32:00,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1661 states. [2021-10-13 22:32:00,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1661 to 1388. [2021-10-13 22:32:00,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1388 states, 1387 states have (on average 2.741888968997837) internal successors, (3803), 1387 states have internal predecessors, (3803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:00,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 3803 transitions. [2021-10-13 22:32:00,690 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 3803 transitions. Word has length 55 [2021-10-13 22:32:00,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:00,690 INFO L470 AbstractCegarLoop]: Abstraction has 1388 states and 3803 transitions. [2021-10-13 22:32:00,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:00,690 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 3803 transitions. [2021-10-13 22:32:00,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-10-13 22:32:00,692 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:00,692 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:00,711 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-13 22:32:00,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-10-13 22:32:00,909 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:00,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:00,910 INFO L82 PathProgramCache]: Analyzing trace with hash 33590920, now seen corresponding path program 7 times [2021-10-13 22:32:00,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:00,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115144642] [2021-10-13 22:32:00,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:00,910 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:00,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:00,978 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:00,978 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:00,978 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115144642] [2021-10-13 22:32:00,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115144642] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:00,978 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500990511] [2021-10-13 22:32:00,978 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:32:00,978 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:00,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:00,979 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:00,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-13 22:32:01,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:01,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 22:32:01,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:01,323 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:01,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500990511] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:01,323 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:01,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2021-10-13 22:32:01,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843476311] [2021-10-13 22:32:01,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 22:32:01,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:01,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 22:32:01,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-10-13 22:32:01,324 INFO L87 Difference]: Start difference. First operand 1388 states and 3803 transitions. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:01,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:01,475 INFO L93 Difference]: Finished difference Result 2111 states and 5497 transitions. [2021-10-13 22:32:01,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 22:32:01,475 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-10-13 22:32:01,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:01,478 INFO L225 Difference]: With dead ends: 2111 [2021-10-13 22:32:01,478 INFO L226 Difference]: Without dead ends: 1841 [2021-10-13 22:32:01,479 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 131.6ms TimeCoverageRelationStatistics Valid=140, Invalid=412, Unknown=0, NotChecked=0, Total=552 [2021-10-13 22:32:01,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1841 states. [2021-10-13 22:32:01,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1841 to 1463. [2021-10-13 22:32:01,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1463 states, 1462 states have (on average 2.7688098495212037) internal successors, (4048), 1462 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:01,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1463 states to 1463 states and 4048 transitions. [2021-10-13 22:32:01,499 INFO L78 Accepts]: Start accepts. Automaton has 1463 states and 4048 transitions. Word has length 55 [2021-10-13 22:32:01,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:01,499 INFO L470 AbstractCegarLoop]: Abstraction has 1463 states and 4048 transitions. [2021-10-13 22:32:01,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:01,499 INFO L276 IsEmpty]: Start isEmpty. Operand 1463 states and 4048 transitions. [2021-10-13 22:32:01,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-10-13 22:32:01,501 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:01,501 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:01,521 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-13 22:32:01,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-10-13 22:32:01,715 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:01,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:01,716 INFO L82 PathProgramCache]: Analyzing trace with hash -422791530, now seen corresponding path program 8 times [2021-10-13 22:32:01,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:01,716 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957281098] [2021-10-13 22:32:01,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:01,716 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:01,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:01,771 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:01,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:01,772 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957281098] [2021-10-13 22:32:01,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957281098] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:01,772 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322539880] [2021-10-13 22:32:01,772 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:32:01,772 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:01,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:01,773 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:01,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-13 22:32:02,006 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:32:02,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:02,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 22:32:02,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:02,150 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:02,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322539880] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:02,150 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:02,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2021-10-13 22:32:02,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503460945] [2021-10-13 22:32:02,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 22:32:02,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:02,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 22:32:02,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-13 22:32:02,151 INFO L87 Difference]: Start difference. First operand 1463 states and 4048 transitions. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:02,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:02,366 INFO L93 Difference]: Finished difference Result 2858 states and 7631 transitions. [2021-10-13 22:32:02,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 22:32:02,366 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-10-13 22:32:02,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:02,371 INFO L225 Difference]: With dead ends: 2858 [2021-10-13 22:32:02,371 INFO L226 Difference]: Without dead ends: 2588 [2021-10-13 22:32:02,371 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 117.5ms TimeCoverageRelationStatistics Valid=153, Invalid=399, Unknown=0, NotChecked=0, Total=552 [2021-10-13 22:32:02,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2588 states. [2021-10-13 22:32:02,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2588 to 1643. [2021-10-13 22:32:02,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1643 states, 1642 states have (on average 2.805724725943971) internal successors, (4607), 1642 states have internal predecessors, (4607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:02,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1643 states to 1643 states and 4607 transitions. [2021-10-13 22:32:02,399 INFO L78 Accepts]: Start accepts. Automaton has 1643 states and 4607 transitions. Word has length 55 [2021-10-13 22:32:02,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:02,399 INFO L470 AbstractCegarLoop]: Abstraction has 1643 states and 4607 transitions. [2021-10-13 22:32:02,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:02,399 INFO L276 IsEmpty]: Start isEmpty. Operand 1643 states and 4607 transitions. [2021-10-13 22:32:02,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-10-13 22:32:02,401 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:02,401 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:02,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-13 22:32:02,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-10-13 22:32:02,615 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:02,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:02,616 INFO L82 PathProgramCache]: Analyzing trace with hash -357549240, now seen corresponding path program 9 times [2021-10-13 22:32:02,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:02,616 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285758170] [2021-10-13 22:32:02,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:02,616 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:02,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:02,670 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:02,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:02,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285758170] [2021-10-13 22:32:02,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285758170] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:02,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805241483] [2021-10-13 22:32:02,671 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:32:02,671 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:02,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:02,671 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:02,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-13 22:32:02,900 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 22:32:02,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:02,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 22:32:02,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:03,034 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:03,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805241483] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:03,034 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:03,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2021-10-13 22:32:03,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003031349] [2021-10-13 22:32:03,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 22:32:03,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:03,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 22:32:03,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-13 22:32:03,035 INFO L87 Difference]: Start difference. First operand 1643 states and 4607 transitions. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:03,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:03,221 INFO L93 Difference]: Finished difference Result 2320 states and 6281 transitions. [2021-10-13 22:32:03,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 22:32:03,221 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-10-13 22:32:03,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:03,224 INFO L225 Difference]: With dead ends: 2320 [2021-10-13 22:32:03,224 INFO L226 Difference]: Without dead ends: 1831 [2021-10-13 22:32:03,225 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 145.5ms TimeCoverageRelationStatistics Valid=166, Invalid=434, Unknown=0, NotChecked=0, Total=600 [2021-10-13 22:32:03,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1831 states. [2021-10-13 22:32:03,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1831 to 1234. [2021-10-13 22:32:03,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1234 states, 1233 states have (on average 2.72992700729927) internal successors, (3366), 1233 states have internal predecessors, (3366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:03,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 3366 transitions. [2021-10-13 22:32:03,241 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 3366 transitions. Word has length 55 [2021-10-13 22:32:03,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:03,241 INFO L470 AbstractCegarLoop]: Abstraction has 1234 states and 3366 transitions. [2021-10-13 22:32:03,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:03,241 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 3366 transitions. [2021-10-13 22:32:03,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-10-13 22:32:03,243 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:03,243 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:03,261 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-13 22:32:03,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-13 22:32:03,459 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:03,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:03,460 INFO L82 PathProgramCache]: Analyzing trace with hash -903701778, now seen corresponding path program 10 times [2021-10-13 22:32:03,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:03,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293188622] [2021-10-13 22:32:03,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:03,460 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:03,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:03,549 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:03,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:03,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293188622] [2021-10-13 22:32:03,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293188622] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:03,550 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845506143] [2021-10-13 22:32:03,550 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:32:03,550 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:03,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:03,550 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:03,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-13 22:32:03,778 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:32:03,778 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:03,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:32:03,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:04,079 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:04,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845506143] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:04,079 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:04,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 15 [2021-10-13 22:32:04,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776004138] [2021-10-13 22:32:04,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 22:32:04,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:04,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 22:32:04,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-10-13 22:32:04,085 INFO L87 Difference]: Start difference. First operand 1234 states and 3366 transitions. Second operand has 15 states, 15 states have (on average 6.0) internal successors, (90), 15 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:04,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:04,245 INFO L93 Difference]: Finished difference Result 2024 states and 5266 transitions. [2021-10-13 22:32:04,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 22:32:04,245 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.0) internal successors, (90), 15 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-10-13 22:32:04,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:04,248 INFO L225 Difference]: With dead ends: 2024 [2021-10-13 22:32:04,248 INFO L226 Difference]: Without dead ends: 1690 [2021-10-13 22:32:04,249 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 149.9ms TimeCoverageRelationStatistics Valid=182, Invalid=520, Unknown=0, NotChecked=0, Total=702 [2021-10-13 22:32:04,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1690 states. [2021-10-13 22:32:04,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1690 to 1319. [2021-10-13 22:32:04,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1319 states, 1318 states have (on average 2.6828528072837634) internal successors, (3536), 1318 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:04,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 3536 transitions. [2021-10-13 22:32:04,267 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 3536 transitions. Word has length 60 [2021-10-13 22:32:04,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:04,267 INFO L470 AbstractCegarLoop]: Abstraction has 1319 states and 3536 transitions. [2021-10-13 22:32:04,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.0) internal successors, (90), 15 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:04,267 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 3536 transitions. [2021-10-13 22:32:04,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-10-13 22:32:04,269 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:04,269 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:04,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-13 22:32:04,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:04,470 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:04,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:04,470 INFO L82 PathProgramCache]: Analyzing trace with hash 957486642, now seen corresponding path program 11 times [2021-10-13 22:32:04,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:04,470 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585814864] [2021-10-13 22:32:04,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:04,470 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:04,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:04,559 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:04,559 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:04,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585814864] [2021-10-13 22:32:04,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585814864] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:04,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675655471] [2021-10-13 22:32:04,559 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:32:04,559 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:04,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:04,560 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:04,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-13 22:32:04,887 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-13 22:32:04,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:04,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 22:32:04,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:05,103 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:05,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675655471] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:05,103 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:05,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2021-10-13 22:32:05,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706654787] [2021-10-13 22:32:05,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 22:32:05,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:05,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 22:32:05,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-10-13 22:32:05,104 INFO L87 Difference]: Start difference. First operand 1319 states and 3536 transitions. Second operand has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 12 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:05,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:05,213 INFO L93 Difference]: Finished difference Result 2246 states and 5647 transitions. [2021-10-13 22:32:05,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 22:32:05,213 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 12 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-10-13 22:32:05,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:05,216 INFO L225 Difference]: With dead ends: 2246 [2021-10-13 22:32:05,216 INFO L226 Difference]: Without dead ends: 1976 [2021-10-13 22:32:05,216 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 95.8ms TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:32:05,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1976 states. [2021-10-13 22:32:05,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1976 to 1463. [2021-10-13 22:32:05,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1463 states, 1462 states have (on average 2.7038303693570453) internal successors, (3953), 1462 states have internal predecessors, (3953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:05,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1463 states to 1463 states and 3953 transitions. [2021-10-13 22:32:05,235 INFO L78 Accepts]: Start accepts. Automaton has 1463 states and 3953 transitions. Word has length 60 [2021-10-13 22:32:05,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:05,236 INFO L470 AbstractCegarLoop]: Abstraction has 1463 states and 3953 transitions. [2021-10-13 22:32:05,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 12 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:05,236 INFO L276 IsEmpty]: Start isEmpty. Operand 1463 states and 3953 transitions. [2021-10-13 22:32:05,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-10-13 22:32:05,237 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:05,237 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:05,254 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-13 22:32:05,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:05,440 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:05,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:05,440 INFO L82 PathProgramCache]: Analyzing trace with hash -1587374302, now seen corresponding path program 12 times [2021-10-13 22:32:05,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:05,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520878056] [2021-10-13 22:32:05,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:05,441 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:05,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:05,525 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:05,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:05,525 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520878056] [2021-10-13 22:32:05,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520878056] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:05,525 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843562379] [2021-10-13 22:32:05,525 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:32:05,525 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:05,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:05,526 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:05,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-13 22:32:05,874 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-13 22:32:05,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:05,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 22:32:05,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:06,071 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:06,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843562379] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:06,071 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:06,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2021-10-13 22:32:06,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232957654] [2021-10-13 22:32:06,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 22:32:06,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:06,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 22:32:06,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-10-13 22:32:06,072 INFO L87 Difference]: Start difference. First operand 1463 states and 3953 transitions. Second operand has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:06,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:06,231 INFO L93 Difference]: Finished difference Result 2206 states and 5642 transitions. [2021-10-13 22:32:06,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 22:32:06,232 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-10-13 22:32:06,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:06,234 INFO L225 Difference]: With dead ends: 2206 [2021-10-13 22:32:06,234 INFO L226 Difference]: Without dead ends: 1936 [2021-10-13 22:32:06,235 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 143.6ms TimeCoverageRelationStatistics Valid=152, Invalid=448, Unknown=0, NotChecked=0, Total=600 [2021-10-13 22:32:06,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1936 states. [2021-10-13 22:32:06,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1936 to 1538. [2021-10-13 22:32:06,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1538 states, 1537 states have (on average 2.718282368249837) internal successors, (4178), 1537 states have internal predecessors, (4178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:06,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1538 states to 1538 states and 4178 transitions. [2021-10-13 22:32:06,253 INFO L78 Accepts]: Start accepts. Automaton has 1538 states and 4178 transitions. Word has length 60 [2021-10-13 22:32:06,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:06,254 INFO L470 AbstractCegarLoop]: Abstraction has 1538 states and 4178 transitions. [2021-10-13 22:32:06,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:06,254 INFO L276 IsEmpty]: Start isEmpty. Operand 1538 states and 4178 transitions. [2021-10-13 22:32:06,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-10-13 22:32:06,255 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:06,256 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:06,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-13 22:32:06,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:06,472 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:06,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:06,473 INFO L82 PathProgramCache]: Analyzing trace with hash -677476944, now seen corresponding path program 13 times [2021-10-13 22:32:06,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:06,473 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116447361] [2021-10-13 22:32:06,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:06,473 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:06,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:06,551 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:06,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:06,551 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116447361] [2021-10-13 22:32:06,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116447361] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:06,551 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780198368] [2021-10-13 22:32:06,551 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:32:06,551 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:06,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:06,552 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:06,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-13 22:32:06,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:06,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 22:32:06,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:07,090 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:07,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780198368] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:07,090 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:07,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2021-10-13 22:32:07,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029998251] [2021-10-13 22:32:07,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 22:32:07,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:07,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 22:32:07,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-10-13 22:32:07,091 INFO L87 Difference]: Start difference. First operand 1538 states and 4178 transitions. Second operand has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 12 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:07,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:07,215 INFO L93 Difference]: Finished difference Result 2256 states and 5817 transitions. [2021-10-13 22:32:07,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 22:32:07,216 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 12 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-10-13 22:32:07,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:07,218 INFO L225 Difference]: With dead ends: 2256 [2021-10-13 22:32:07,218 INFO L226 Difference]: Without dead ends: 1986 [2021-10-13 22:32:07,219 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 109.3ms TimeCoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:32:07,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1986 states. [2021-10-13 22:32:07,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1986 to 1613. [2021-10-13 22:32:07,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1613 states, 1612 states have (on average 2.7313895781637716) internal successors, (4403), 1612 states have internal predecessors, (4403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:07,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1613 states to 1613 states and 4403 transitions. [2021-10-13 22:32:07,253 INFO L78 Accepts]: Start accepts. Automaton has 1613 states and 4403 transitions. Word has length 60 [2021-10-13 22:32:07,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:07,253 INFO L470 AbstractCegarLoop]: Abstraction has 1613 states and 4403 transitions. [2021-10-13 22:32:07,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 12 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:07,253 INFO L276 IsEmpty]: Start isEmpty. Operand 1613 states and 4403 transitions. [2021-10-13 22:32:07,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-10-13 22:32:07,255 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:07,255 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:07,274 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-10-13 22:32:07,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-10-13 22:32:07,463 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:07,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:07,464 INFO L82 PathProgramCache]: Analyzing trace with hash -545361248, now seen corresponding path program 14 times [2021-10-13 22:32:07,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:07,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052188366] [2021-10-13 22:32:07,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:07,464 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:07,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:07,531 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:07,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:07,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052188366] [2021-10-13 22:32:07,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052188366] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:07,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837980575] [2021-10-13 22:32:07,532 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:32:07,532 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:07,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:07,533 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:07,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-13 22:32:07,850 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:32:07,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:07,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 22:32:07,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:08,013 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:08,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837980575] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:08,013 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:08,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2021-10-13 22:32:08,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388801305] [2021-10-13 22:32:08,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 22:32:08,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:08,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 22:32:08,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-10-13 22:32:08,014 INFO L87 Difference]: Start difference. First operand 1613 states and 4403 transitions. Second operand has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:08,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:08,217 INFO L93 Difference]: Finished difference Result 2341 states and 6107 transitions. [2021-10-13 22:32:08,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 22:32:08,218 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-10-13 22:32:08,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:08,220 INFO L225 Difference]: With dead ends: 2341 [2021-10-13 22:32:08,220 INFO L226 Difference]: Without dead ends: 2071 [2021-10-13 22:32:08,221 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 162.3ms TimeCoverageRelationStatistics Valid=178, Invalid=524, Unknown=0, NotChecked=0, Total=702 [2021-10-13 22:32:08,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2071 states. [2021-10-13 22:32:08,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2071 to 1688. [2021-10-13 22:32:08,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1688 states, 1687 states have (on average 2.7551867219917012) internal successors, (4648), 1687 states have internal predecessors, (4648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:08,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1688 states to 1688 states and 4648 transitions. [2021-10-13 22:32:08,242 INFO L78 Accepts]: Start accepts. Automaton has 1688 states and 4648 transitions. Word has length 60 [2021-10-13 22:32:08,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:08,242 INFO L470 AbstractCegarLoop]: Abstraction has 1688 states and 4648 transitions. [2021-10-13 22:32:08,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:08,242 INFO L276 IsEmpty]: Start isEmpty. Operand 1688 states and 4648 transitions. [2021-10-13 22:32:08,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-10-13 22:32:08,244 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:08,244 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:08,263 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-10-13 22:32:08,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:08,461 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:08,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:08,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1001743698, now seen corresponding path program 15 times [2021-10-13 22:32:08,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:08,461 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242384701] [2021-10-13 22:32:08,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:08,462 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:08,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:08,518 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:08,518 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:08,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242384701] [2021-10-13 22:32:08,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242384701] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:08,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284839311] [2021-10-13 22:32:08,519 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:32:08,519 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:08,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:08,519 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:08,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-10-13 22:32:08,851 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 22:32:08,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:08,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 22:32:08,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:08,993 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:08,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284839311] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:08,993 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:08,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2021-10-13 22:32:08,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912695756] [2021-10-13 22:32:08,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 22:32:08,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:08,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 22:32:08,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-13 22:32:08,994 INFO L87 Difference]: Start difference. First operand 1688 states and 4648 transitions. Second operand has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 12 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:09,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:09,145 INFO L93 Difference]: Finished difference Result 3108 states and 8281 transitions. [2021-10-13 22:32:09,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 22:32:09,145 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 12 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-10-13 22:32:09,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:09,149 INFO L225 Difference]: With dead ends: 3108 [2021-10-13 22:32:09,149 INFO L226 Difference]: Without dead ends: 2838 [2021-10-13 22:32:09,149 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 116.6ms TimeCoverageRelationStatistics Valid=164, Invalid=436, Unknown=0, NotChecked=0, Total=600 [2021-10-13 22:32:09,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2838 states. [2021-10-13 22:32:09,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2838 to 1868. [2021-10-13 22:32:09,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1868 states, 1867 states have (on average 2.78896625602571) internal successors, (5207), 1867 states have internal predecessors, (5207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:09,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1868 states to 1868 states and 5207 transitions. [2021-10-13 22:32:09,173 INFO L78 Accepts]: Start accepts. Automaton has 1868 states and 5207 transitions. Word has length 60 [2021-10-13 22:32:09,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:09,174 INFO L470 AbstractCegarLoop]: Abstraction has 1868 states and 5207 transitions. [2021-10-13 22:32:09,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 12 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:09,174 INFO L276 IsEmpty]: Start isEmpty. Operand 1868 states and 5207 transitions. [2021-10-13 22:32:09,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-10-13 22:32:09,175 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:09,175 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:09,194 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-10-13 22:32:09,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:09,391 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:09,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:09,392 INFO L82 PathProgramCache]: Analyzing trace with hash -936501408, now seen corresponding path program 16 times [2021-10-13 22:32:09,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:09,392 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923806244] [2021-10-13 22:32:09,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:09,392 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:09,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:09,454 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:09,454 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:09,454 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923806244] [2021-10-13 22:32:09,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923806244] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:09,455 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157544] [2021-10-13 22:32:09,455 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:32:09,455 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:09,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:09,455 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:09,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-10-13 22:32:09,819 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:32:09,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:09,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 22:32:09,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:09,973 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:09,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157544] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:09,974 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:09,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2021-10-13 22:32:09,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666955791] [2021-10-13 22:32:09,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 22:32:09,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:09,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 22:32:09,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-13 22:32:09,975 INFO L87 Difference]: Start difference. First operand 1868 states and 5207 transitions. Second operand has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 12 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:10,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:10,194 INFO L93 Difference]: Finished difference Result 2595 states and 6981 transitions. [2021-10-13 22:32:10,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-13 22:32:10,194 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 12 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-10-13 22:32:10,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:10,197 INFO L225 Difference]: With dead ends: 2595 [2021-10-13 22:32:10,197 INFO L226 Difference]: Without dead ends: 2106 [2021-10-13 22:32:10,198 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 187.9ms TimeCoverageRelationStatistics Valid=210, Invalid=546, Unknown=0, NotChecked=0, Total=756 [2021-10-13 22:32:10,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2106 states. [2021-10-13 22:32:10,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2106 to 1513. [2021-10-13 22:32:10,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1513 states, 1512 states have (on average 2.7301587301587302) internal successors, (4128), 1512 states have internal predecessors, (4128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:10,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1513 states to 1513 states and 4128 transitions. [2021-10-13 22:32:10,216 INFO L78 Accepts]: Start accepts. Automaton has 1513 states and 4128 transitions. Word has length 60 [2021-10-13 22:32:10,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:10,217 INFO L470 AbstractCegarLoop]: Abstraction has 1513 states and 4128 transitions. [2021-10-13 22:32:10,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 12 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:10,217 INFO L276 IsEmpty]: Start isEmpty. Operand 1513 states and 4128 transitions. [2021-10-13 22:32:10,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-10-13 22:32:10,218 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:10,218 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:10,240 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-10-13 22:32:10,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:10,435 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:10,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:10,435 INFO L82 PathProgramCache]: Analyzing trace with hash 902265289, now seen corresponding path program 17 times [2021-10-13 22:32:10,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:10,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6022562] [2021-10-13 22:32:10,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:10,436 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:10,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:10,515 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:10,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:10,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6022562] [2021-10-13 22:32:10,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6022562] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:10,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313601978] [2021-10-13 22:32:10,515 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:32:10,515 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:10,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:10,516 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:10,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-10-13 22:32:10,885 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-13 22:32:10,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:10,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:32:10,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:11,066 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:11,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313601978] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:11,067 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:11,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2021-10-13 22:32:11,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241841909] [2021-10-13 22:32:11,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 22:32:11,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:11,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 22:32:11,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-10-13 22:32:11,067 INFO L87 Difference]: Start difference. First operand 1513 states and 4128 transitions. Second operand has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:11,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:11,201 INFO L93 Difference]: Finished difference Result 2231 states and 5767 transitions. [2021-10-13 22:32:11,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 22:32:11,201 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-10-13 22:32:11,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:11,204 INFO L225 Difference]: With dead ends: 2231 [2021-10-13 22:32:11,204 INFO L226 Difference]: Without dead ends: 1961 [2021-10-13 22:32:11,204 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 122.3ms TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2021-10-13 22:32:11,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1961 states. [2021-10-13 22:32:11,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1961 to 1588. [2021-10-13 22:32:11,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1588 states, 1587 states have (on average 2.742911153119093) internal successors, (4353), 1587 states have internal predecessors, (4353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:11,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1588 states to 1588 states and 4353 transitions. [2021-10-13 22:32:11,223 INFO L78 Accepts]: Start accepts. Automaton has 1588 states and 4353 transitions. Word has length 65 [2021-10-13 22:32:11,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:11,223 INFO L470 AbstractCegarLoop]: Abstraction has 1588 states and 4353 transitions. [2021-10-13 22:32:11,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:11,223 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 4353 transitions. [2021-10-13 22:32:11,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-10-13 22:32:11,224 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:11,224 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:11,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-10-13 22:32:11,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-10-13 22:32:11,435 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:11,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:11,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1642595655, now seen corresponding path program 18 times [2021-10-13 22:32:11,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:11,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418394116] [2021-10-13 22:32:11,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:11,436 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:11,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:11,519 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:11,519 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:11,519 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418394116] [2021-10-13 22:32:11,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418394116] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:11,519 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476420998] [2021-10-13 22:32:11,519 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:32:11,519 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:11,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:11,520 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:11,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-13 22:32:11,927 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-13 22:32:11,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:11,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:32:11,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:12,145 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:12,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476420998] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:12,145 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:12,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2021-10-13 22:32:12,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400357576] [2021-10-13 22:32:12,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 22:32:12,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:12,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 22:32:12,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-10-13 22:32:12,146 INFO L87 Difference]: Start difference. First operand 1588 states and 4353 transitions. Second operand has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:12,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:12,332 INFO L93 Difference]: Finished difference Result 2401 states and 6182 transitions. [2021-10-13 22:32:12,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 22:32:12,332 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-10-13 22:32:12,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:12,335 INFO L225 Difference]: With dead ends: 2401 [2021-10-13 22:32:12,335 INFO L226 Difference]: Without dead ends: 2131 [2021-10-13 22:32:12,335 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 162.4ms TimeCoverageRelationStatistics Valid=185, Invalid=571, Unknown=0, NotChecked=0, Total=756 [2021-10-13 22:32:12,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2131 states. [2021-10-13 22:32:12,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2131 to 1663. [2021-10-13 22:32:12,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1663 states, 1662 states have (on average 2.7545126353790614) internal successors, (4578), 1662 states have internal predecessors, (4578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:12,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1663 states to 1663 states and 4578 transitions. [2021-10-13 22:32:12,355 INFO L78 Accepts]: Start accepts. Automaton has 1663 states and 4578 transitions. Word has length 65 [2021-10-13 22:32:12,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:12,355 INFO L470 AbstractCegarLoop]: Abstraction has 1663 states and 4578 transitions. [2021-10-13 22:32:12,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:12,355 INFO L276 IsEmpty]: Start isEmpty. Operand 1663 states and 4578 transitions. [2021-10-13 22:32:12,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-10-13 22:32:12,357 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:12,357 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:12,375 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-10-13 22:32:12,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-10-13 22:32:12,571 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:12,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:12,572 INFO L82 PathProgramCache]: Analyzing trace with hash -732698297, now seen corresponding path program 19 times [2021-10-13 22:32:12,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:12,572 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567873790] [2021-10-13 22:32:12,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:12,572 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:12,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:12,641 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:12,641 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:12,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567873790] [2021-10-13 22:32:12,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567873790] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:12,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026836395] [2021-10-13 22:32:12,642 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:32:12,642 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:12,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:12,642 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:12,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-10-13 22:32:13,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:13,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:32:13,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:13,219 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:13,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1026836395] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:13,219 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:13,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2021-10-13 22:32:13,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458582092] [2021-10-13 22:32:13,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 22:32:13,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:13,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 22:32:13,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-10-13 22:32:13,220 INFO L87 Difference]: Start difference. First operand 1663 states and 4578 transitions. Second operand has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:13,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:13,375 INFO L93 Difference]: Finished difference Result 2431 states and 6317 transitions. [2021-10-13 22:32:13,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-13 22:32:13,375 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-10-13 22:32:13,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:13,378 INFO L225 Difference]: With dead ends: 2431 [2021-10-13 22:32:13,378 INFO L226 Difference]: Without dead ends: 2161 [2021-10-13 22:32:13,378 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 136.6ms TimeCoverageRelationStatistics Valid=195, Invalid=561, Unknown=0, NotChecked=0, Total=756 [2021-10-13 22:32:13,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2161 states. [2021-10-13 22:32:13,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2161 to 1738. [2021-10-13 22:32:13,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1738 states, 1737 states have (on average 2.765112262521589) internal successors, (4803), 1737 states have internal predecessors, (4803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:13,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1738 states to 1738 states and 4803 transitions. [2021-10-13 22:32:13,399 INFO L78 Accepts]: Start accepts. Automaton has 1738 states and 4803 transitions. Word has length 65 [2021-10-13 22:32:13,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:13,399 INFO L470 AbstractCegarLoop]: Abstraction has 1738 states and 4803 transitions. [2021-10-13 22:32:13,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:13,399 INFO L276 IsEmpty]: Start isEmpty. Operand 1738 states and 4803 transitions. [2021-10-13 22:32:13,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-10-13 22:32:13,401 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:13,401 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:13,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-10-13 22:32:13,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-10-13 22:32:13,615 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:13,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:13,616 INFO L82 PathProgramCache]: Analyzing trace with hash -600582601, now seen corresponding path program 20 times [2021-10-13 22:32:13,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:13,616 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194333720] [2021-10-13 22:32:13,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:13,616 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:13,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:13,686 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:13,687 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:13,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194333720] [2021-10-13 22:32:13,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194333720] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:13,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480304522] [2021-10-13 22:32:13,687 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:32:13,687 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:13,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:13,688 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:13,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-10-13 22:32:14,117 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:32:14,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:14,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:32:14,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:14,288 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:14,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480304522] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:14,288 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:14,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2021-10-13 22:32:14,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213325] [2021-10-13 22:32:14,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 22:32:14,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:14,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 22:32:14,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-10-13 22:32:14,291 INFO L87 Difference]: Start difference. First operand 1738 states and 4803 transitions. Second operand has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:14,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:14,532 INFO L93 Difference]: Finished difference Result 2516 states and 6607 transitions. [2021-10-13 22:32:14,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-13 22:32:14,533 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-10-13 22:32:14,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:14,535 INFO L225 Difference]: With dead ends: 2516 [2021-10-13 22:32:14,535 INFO L226 Difference]: Without dead ends: 2246 [2021-10-13 22:32:14,535 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 207.6ms TimeCoverageRelationStatistics Valid=218, Invalid=652, Unknown=0, NotChecked=0, Total=870 [2021-10-13 22:32:14,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2246 states. [2021-10-13 22:32:14,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2246 to 1813. [2021-10-13 22:32:14,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1813 states, 1812 states have (on average 2.7858719646799117) internal successors, (5048), 1812 states have internal predecessors, (5048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:14,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1813 states to 1813 states and 5048 transitions. [2021-10-13 22:32:14,556 INFO L78 Accepts]: Start accepts. Automaton has 1813 states and 5048 transitions. Word has length 65 [2021-10-13 22:32:14,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:14,556 INFO L470 AbstractCegarLoop]: Abstraction has 1813 states and 5048 transitions. [2021-10-13 22:32:14,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:14,556 INFO L276 IsEmpty]: Start isEmpty. Operand 1813 states and 5048 transitions. [2021-10-13 22:32:14,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-10-13 22:32:14,558 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:14,558 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:14,574 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2021-10-13 22:32:14,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:14,770 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:14,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:14,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1056965051, now seen corresponding path program 21 times [2021-10-13 22:32:14,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:14,771 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879409167] [2021-10-13 22:32:14,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:14,771 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:14,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:14,840 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:14,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:14,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879409167] [2021-10-13 22:32:14,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879409167] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:14,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111316047] [2021-10-13 22:32:14,841 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:32:14,841 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:14,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:14,842 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:14,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-10-13 22:32:15,394 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-13 22:32:15,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:15,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:32:15,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:15,527 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:15,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111316047] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:15,528 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:15,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2021-10-13 22:32:15,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137203812] [2021-10-13 22:32:15,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 22:32:15,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:15,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 22:32:15,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-10-13 22:32:15,529 INFO L87 Difference]: Start difference. First operand 1813 states and 5048 transitions. Second operand has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:15,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:15,740 INFO L93 Difference]: Finished difference Result 3258 states and 8731 transitions. [2021-10-13 22:32:15,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-13 22:32:15,740 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-10-13 22:32:15,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:15,744 INFO L225 Difference]: With dead ends: 3258 [2021-10-13 22:32:15,744 INFO L226 Difference]: Without dead ends: 2988 [2021-10-13 22:32:15,744 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 160.2ms TimeCoverageRelationStatistics Valid=243, Invalid=627, Unknown=0, NotChecked=0, Total=870 [2021-10-13 22:32:15,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2988 states. [2021-10-13 22:32:15,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2988 to 1993. [2021-10-13 22:32:15,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1993 states, 1992 states have (on average 2.8147590361445785) internal successors, (5607), 1992 states have internal predecessors, (5607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:15,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1993 states to 1993 states and 5607 transitions. [2021-10-13 22:32:15,771 INFO L78 Accepts]: Start accepts. Automaton has 1993 states and 5607 transitions. Word has length 65 [2021-10-13 22:32:15,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:15,771 INFO L470 AbstractCegarLoop]: Abstraction has 1993 states and 5607 transitions. [2021-10-13 22:32:15,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:15,771 INFO L276 IsEmpty]: Start isEmpty. Operand 1993 states and 5607 transitions. [2021-10-13 22:32:15,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-10-13 22:32:15,773 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:15,773 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:15,790 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-10-13 22:32:15,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:15,990 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:15,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:15,990 INFO L82 PathProgramCache]: Analyzing trace with hash -991722761, now seen corresponding path program 22 times [2021-10-13 22:32:15,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:15,990 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957254887] [2021-10-13 22:32:15,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:15,990 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:15,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:16,060 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:16,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:16,061 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957254887] [2021-10-13 22:32:16,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957254887] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:16,061 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987156300] [2021-10-13 22:32:16,062 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:32:16,062 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:16,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:16,062 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:16,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-10-13 22:32:16,532 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:32:16,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:16,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:32:16,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:16,706 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:16,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987156300] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:16,706 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:16,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2021-10-13 22:32:16,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165092825] [2021-10-13 22:32:16,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 22:32:16,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:16,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 22:32:16,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-10-13 22:32:16,707 INFO L87 Difference]: Start difference. First operand 1993 states and 5607 transitions. Second operand has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:16,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:16,995 INFO L93 Difference]: Finished difference Result 3126 states and 8396 transitions. [2021-10-13 22:32:16,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-13 22:32:16,995 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-10-13 22:32:16,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:16,998 INFO L225 Difference]: With dead ends: 3126 [2021-10-13 22:32:16,998 INFO L226 Difference]: Without dead ends: 2551 [2021-10-13 22:32:16,998 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 233.4ms TimeCoverageRelationStatistics Valid=300, Invalid=890, Unknown=0, NotChecked=0, Total=1190 [2021-10-13 22:32:17,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2551 states. [2021-10-13 22:32:17,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2551 to 2028. [2021-10-13 22:32:17,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2028 states, 2027 states have (on average 2.8036507153428714) internal successors, (5683), 2027 states have internal predecessors, (5683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:17,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2028 states to 2028 states and 5683 transitions. [2021-10-13 22:32:17,023 INFO L78 Accepts]: Start accepts. Automaton has 2028 states and 5683 transitions. Word has length 65 [2021-10-13 22:32:17,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:17,023 INFO L470 AbstractCegarLoop]: Abstraction has 2028 states and 5683 transitions. [2021-10-13 22:32:17,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:17,023 INFO L276 IsEmpty]: Start isEmpty. Operand 2028 states and 5683 transitions. [2021-10-13 22:32:17,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-10-13 22:32:17,025 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:17,025 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:17,042 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-10-13 22:32:17,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-10-13 22:32:17,227 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:17,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:17,228 INFO L82 PathProgramCache]: Analyzing trace with hash 792346527, now seen corresponding path program 23 times [2021-10-13 22:32:17,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:17,228 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358894117] [2021-10-13 22:32:17,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:17,228 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:17,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:17,325 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:17,325 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:17,325 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358894117] [2021-10-13 22:32:17,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358894117] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:17,325 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582585808] [2021-10-13 22:32:17,325 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:32:17,326 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:17,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:17,326 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:17,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-10-13 22:32:17,827 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-13 22:32:17,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:17,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 22:32:17,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:18,133 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:18,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582585808] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:18,133 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:18,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 17 [2021-10-13 22:32:18,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830856664] [2021-10-13 22:32:18,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 22:32:18,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:18,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 22:32:18,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2021-10-13 22:32:18,134 INFO L87 Difference]: Start difference. First operand 2028 states and 5683 transitions. Second operand has 17 states, 17 states have (on average 5.882352941176471) internal successors, (100), 17 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:18,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:18,311 INFO L93 Difference]: Finished difference Result 2868 states and 7683 transitions. [2021-10-13 22:32:18,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 22:32:18,311 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.882352941176471) internal successors, (100), 17 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-10-13 22:32:18,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:18,314 INFO L225 Difference]: With dead ends: 2868 [2021-10-13 22:32:18,314 INFO L226 Difference]: Without dead ends: 2534 [2021-10-13 22:32:18,314 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 174.1ms TimeCoverageRelationStatistics Valid=240, Invalid=690, Unknown=0, NotChecked=0, Total=930 [2021-10-13 22:32:18,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2534 states. [2021-10-13 22:32:18,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2534 to 2113. [2021-10-13 22:32:18,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2113 states, 2112 states have (on average 2.7713068181818183) internal successors, (5853), 2112 states have internal predecessors, (5853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:18,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2113 states to 2113 states and 5853 transitions. [2021-10-13 22:32:18,337 INFO L78 Accepts]: Start accepts. Automaton has 2113 states and 5853 transitions. Word has length 70 [2021-10-13 22:32:18,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:18,337 INFO L470 AbstractCegarLoop]: Abstraction has 2113 states and 5853 transitions. [2021-10-13 22:32:18,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.882352941176471) internal successors, (100), 17 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:18,337 INFO L276 IsEmpty]: Start isEmpty. Operand 2113 states and 5853 transitions. [2021-10-13 22:32:18,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-10-13 22:32:18,340 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:18,340 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:18,358 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-10-13 22:32:18,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-10-13 22:32:18,540 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:18,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:18,540 INFO L82 PathProgramCache]: Analyzing trace with hash 1846244835, now seen corresponding path program 24 times [2021-10-13 22:32:18,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:18,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333543056] [2021-10-13 22:32:18,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:18,541 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:18,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:18,633 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:18,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:18,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333543056] [2021-10-13 22:32:18,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333543056] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:18,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24800880] [2021-10-13 22:32:18,634 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:32:18,634 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:18,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:18,634 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:18,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-10-13 22:32:19,153 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-13 22:32:19,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:19,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:32:19,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:19,410 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:19,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24800880] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:19,410 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:19,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2021-10-13 22:32:19,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258432426] [2021-10-13 22:32:19,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 22:32:19,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:19,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 22:32:19,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-10-13 22:32:19,411 INFO L87 Difference]: Start difference. First operand 2113 states and 5853 transitions. Second operand has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:19,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:19,535 INFO L93 Difference]: Finished difference Result 3061 states and 7877 transitions. [2021-10-13 22:32:19,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 22:32:19,535 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-10-13 22:32:19,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:19,539 INFO L225 Difference]: With dead ends: 3061 [2021-10-13 22:32:19,539 INFO L226 Difference]: Without dead ends: 2791 [2021-10-13 22:32:19,539 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 124.3ms TimeCoverageRelationStatistics Valid=158, Invalid=442, Unknown=0, NotChecked=0, Total=600 [2021-10-13 22:32:19,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2791 states. [2021-10-13 22:32:19,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2791 to 2128. [2021-10-13 22:32:19,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2128 states, 2127 states have (on average 2.765867418899859) internal successors, (5883), 2127 states have internal predecessors, (5883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:19,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2128 states to 2128 states and 5883 transitions. [2021-10-13 22:32:19,561 INFO L78 Accepts]: Start accepts. Automaton has 2128 states and 5883 transitions. Word has length 70 [2021-10-13 22:32:19,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:19,562 INFO L470 AbstractCegarLoop]: Abstraction has 2128 states and 5883 transitions. [2021-10-13 22:32:19,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:19,562 INFO L276 IsEmpty]: Start isEmpty. Operand 2128 states and 5883 transitions. [2021-10-13 22:32:19,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-10-13 22:32:19,564 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:19,564 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:19,581 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-10-13 22:32:19,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:19,764 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:19,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:19,765 INFO L82 PathProgramCache]: Analyzing trace with hash -1574729005, now seen corresponding path program 25 times [2021-10-13 22:32:19,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:19,765 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230429207] [2021-10-13 22:32:19,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:19,765 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:19,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:19,882 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:19,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:19,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230429207] [2021-10-13 22:32:19,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230429207] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:19,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094885240] [2021-10-13 22:32:19,882 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:32:19,883 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:19,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:19,883 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:19,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-10-13 22:32:20,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:20,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:32:20,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:20,684 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:20,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094885240] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:20,684 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:20,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2021-10-13 22:32:20,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006332757] [2021-10-13 22:32:20,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 22:32:20,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:20,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 22:32:20,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-10-13 22:32:20,685 INFO L87 Difference]: Start difference. First operand 2128 states and 5883 transitions. Second operand has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:20,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:20,871 INFO L93 Difference]: Finished difference Result 2946 states and 7647 transitions. [2021-10-13 22:32:20,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 22:32:20,871 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-10-13 22:32:20,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:20,874 INFO L225 Difference]: With dead ends: 2946 [2021-10-13 22:32:20,875 INFO L226 Difference]: Without dead ends: 2676 [2021-10-13 22:32:20,875 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 193.8ms TimeCoverageRelationStatistics Valid=203, Invalid=609, Unknown=0, NotChecked=0, Total=812 [2021-10-13 22:32:20,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2676 states. [2021-10-13 22:32:20,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2676 to 2128. [2021-10-13 22:32:20,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2128 states, 2127 states have (on average 2.765867418899859) internal successors, (5883), 2127 states have internal predecessors, (5883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:20,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2128 states to 2128 states and 5883 transitions. [2021-10-13 22:32:20,897 INFO L78 Accepts]: Start accepts. Automaton has 2128 states and 5883 transitions. Word has length 70 [2021-10-13 22:32:20,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:20,897 INFO L470 AbstractCegarLoop]: Abstraction has 2128 states and 5883 transitions. [2021-10-13 22:32:20,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:20,897 INFO L276 IsEmpty]: Start isEmpty. Operand 2128 states and 5883 transitions. [2021-10-13 22:32:20,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-10-13 22:32:20,899 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:20,900 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:20,918 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-10-13 22:32:21,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:21,103 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:21,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:21,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1079435295, now seen corresponding path program 26 times [2021-10-13 22:32:21,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:21,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301067826] [2021-10-13 22:32:21,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:21,104 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:21,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:21,188 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:21,188 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:21,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301067826] [2021-10-13 22:32:21,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301067826] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:21,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693217458] [2021-10-13 22:32:21,188 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:32:21,188 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:21,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:21,189 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:21,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-10-13 22:32:21,783 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:32:21,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:21,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:32:21,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:22,001 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:22,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693217458] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:22,002 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:22,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2021-10-13 22:32:22,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982360127] [2021-10-13 22:32:22,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 22:32:22,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:22,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 22:32:22,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-10-13 22:32:22,003 INFO L87 Difference]: Start difference. First operand 2128 states and 5883 transitions. Second operand has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:22,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:22,156 INFO L93 Difference]: Finished difference Result 2921 states and 7597 transitions. [2021-10-13 22:32:22,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 22:32:22,156 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-10-13 22:32:22,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:22,159 INFO L225 Difference]: With dead ends: 2921 [2021-10-13 22:32:22,159 INFO L226 Difference]: Without dead ends: 2651 [2021-10-13 22:32:22,160 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 133.9ms TimeCoverageRelationStatistics Valid=174, Invalid=528, Unknown=0, NotChecked=0, Total=702 [2021-10-13 22:32:22,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2651 states. [2021-10-13 22:32:22,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2651 to 2128. [2021-10-13 22:32:22,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2128 states, 2127 states have (on average 2.765867418899859) internal successors, (5883), 2127 states have internal predecessors, (5883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:22,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2128 states to 2128 states and 5883 transitions. [2021-10-13 22:32:22,182 INFO L78 Accepts]: Start accepts. Automaton has 2128 states and 5883 transitions. Word has length 70 [2021-10-13 22:32:22,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:22,182 INFO L470 AbstractCegarLoop]: Abstraction has 2128 states and 5883 transitions. [2021-10-13 22:32:22,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:22,183 INFO L276 IsEmpty]: Start isEmpty. Operand 2128 states and 5883 transitions. [2021-10-13 22:32:22,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-10-13 22:32:22,185 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:22,185 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:22,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-10-13 22:32:22,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:22,394 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:22,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:22,394 INFO L82 PathProgramCache]: Analyzing trace with hash 670671057, now seen corresponding path program 27 times [2021-10-13 22:32:22,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:22,394 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881434816] [2021-10-13 22:32:22,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:22,394 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:22,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:22,482 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:22,482 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:22,482 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881434816] [2021-10-13 22:32:22,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881434816] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:22,482 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047664836] [2021-10-13 22:32:22,482 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:32:22,482 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:22,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:22,483 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:22,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-10-13 22:32:23,083 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-13 22:32:23,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:23,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:32:23,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:23,285 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:23,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047664836] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:23,285 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:23,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2021-10-13 22:32:23,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494822603] [2021-10-13 22:32:23,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 22:32:23,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:23,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 22:32:23,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-10-13 22:32:23,286 INFO L87 Difference]: Start difference. First operand 2128 states and 5883 transitions. Second operand has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:23,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:23,517 INFO L93 Difference]: Finished difference Result 2871 states and 7497 transitions. [2021-10-13 22:32:23,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-13 22:32:23,518 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-10-13 22:32:23,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:23,521 INFO L225 Difference]: With dead ends: 2871 [2021-10-13 22:32:23,521 INFO L226 Difference]: Without dead ends: 2601 [2021-10-13 22:32:23,521 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 213.0ms TimeCoverageRelationStatistics Valid=227, Invalid=703, Unknown=0, NotChecked=0, Total=930 [2021-10-13 22:32:23,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2601 states. [2021-10-13 22:32:23,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2601 to 2128. [2021-10-13 22:32:23,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2128 states, 2127 states have (on average 2.765867418899859) internal successors, (5883), 2127 states have internal predecessors, (5883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:23,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2128 states to 2128 states and 5883 transitions. [2021-10-13 22:32:23,546 INFO L78 Accepts]: Start accepts. Automaton has 2128 states and 5883 transitions. Word has length 70 [2021-10-13 22:32:23,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:23,546 INFO L470 AbstractCegarLoop]: Abstraction has 2128 states and 5883 transitions. [2021-10-13 22:32:23,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:23,546 INFO L276 IsEmpty]: Start isEmpty. Operand 2128 states and 5883 transitions. [2021-10-13 22:32:23,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-10-13 22:32:23,548 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:23,548 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:23,568 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-10-13 22:32:23,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-10-13 22:32:23,766 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:23,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:23,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1580568415, now seen corresponding path program 28 times [2021-10-13 22:32:23,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:23,766 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880686997] [2021-10-13 22:32:23,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:23,766 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:23,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:23,867 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:23,868 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:23,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880686997] [2021-10-13 22:32:23,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880686997] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:23,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790905645] [2021-10-13 22:32:23,868 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:32:23,868 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:23,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:23,869 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:23,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-10-13 22:32:24,488 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:32:24,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:24,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:32:24,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:24,664 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:24,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790905645] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:24,665 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:24,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2021-10-13 22:32:24,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925029836] [2021-10-13 22:32:24,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 22:32:24,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:24,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 22:32:24,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-10-13 22:32:24,666 INFO L87 Difference]: Start difference. First operand 2128 states and 5883 transitions. Second operand has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:24,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:24,836 INFO L93 Difference]: Finished difference Result 2821 states and 7397 transitions. [2021-10-13 22:32:24,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-13 22:32:24,836 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-10-13 22:32:24,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:24,839 INFO L225 Difference]: With dead ends: 2821 [2021-10-13 22:32:24,839 INFO L226 Difference]: Without dead ends: 2551 [2021-10-13 22:32:24,840 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 163.0ms TimeCoverageRelationStatistics Valid=206, Invalid=606, Unknown=0, NotChecked=0, Total=812 [2021-10-13 22:32:24,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2551 states. [2021-10-13 22:32:24,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2551 to 2128. [2021-10-13 22:32:24,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2128 states, 2127 states have (on average 2.765867418899859) internal successors, (5883), 2127 states have internal predecessors, (5883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:24,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2128 states to 2128 states and 5883 transitions. [2021-10-13 22:32:24,861 INFO L78 Accepts]: Start accepts. Automaton has 2128 states and 5883 transitions. Word has length 70 [2021-10-13 22:32:24,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:24,861 INFO L470 AbstractCegarLoop]: Abstraction has 2128 states and 5883 transitions. [2021-10-13 22:32:24,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:24,862 INFO L276 IsEmpty]: Start isEmpty. Operand 2128 states and 5883 transitions. [2021-10-13 22:32:24,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-10-13 22:32:24,864 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:24,864 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:24,883 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2021-10-13 22:32:25,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-10-13 22:32:25,064 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:25,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:25,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1712684111, now seen corresponding path program 29 times [2021-10-13 22:32:25,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:25,065 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263271420] [2021-10-13 22:32:25,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:25,065 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:25,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:25,151 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:25,151 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:25,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263271420] [2021-10-13 22:32:25,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263271420] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:25,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314006710] [2021-10-13 22:32:25,151 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:32:25,151 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:25,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:25,152 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:25,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-10-13 22:32:25,796 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-13 22:32:25,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:25,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:32:25,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:25,974 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:25,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314006710] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:25,974 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:25,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2021-10-13 22:32:25,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634083176] [2021-10-13 22:32:25,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 22:32:25,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:25,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 22:32:25,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-10-13 22:32:25,978 INFO L87 Difference]: Start difference. First operand 2128 states and 5883 transitions. Second operand has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:26,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:26,229 INFO L93 Difference]: Finished difference Result 2831 states and 7447 transitions. [2021-10-13 22:32:26,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 22:32:26,229 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-10-13 22:32:26,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:26,232 INFO L225 Difference]: With dead ends: 2831 [2021-10-13 22:32:26,232 INFO L226 Difference]: Without dead ends: 2561 [2021-10-13 22:32:26,232 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 230.3ms TimeCoverageRelationStatistics Valid=267, Invalid=789, Unknown=0, NotChecked=0, Total=1056 [2021-10-13 22:32:26,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2561 states. [2021-10-13 22:32:26,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2561 to 2128. [2021-10-13 22:32:26,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2128 states, 2127 states have (on average 2.768218147625764) internal successors, (5888), 2127 states have internal predecessors, (5888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:26,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2128 states to 2128 states and 5888 transitions. [2021-10-13 22:32:26,269 INFO L78 Accepts]: Start accepts. Automaton has 2128 states and 5888 transitions. Word has length 70 [2021-10-13 22:32:26,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:26,269 INFO L470 AbstractCegarLoop]: Abstraction has 2128 states and 5888 transitions. [2021-10-13 22:32:26,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:26,269 INFO L276 IsEmpty]: Start isEmpty. Operand 2128 states and 5888 transitions. [2021-10-13 22:32:26,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-10-13 22:32:26,271 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:26,272 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:26,289 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2021-10-13 22:32:26,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-10-13 22:32:26,472 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:26,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:26,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1256301661, now seen corresponding path program 30 times [2021-10-13 22:32:26,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:26,473 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615335312] [2021-10-13 22:32:26,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:26,473 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:26,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:26,552 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:26,552 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:26,552 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615335312] [2021-10-13 22:32:26,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615335312] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:26,552 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987902138] [2021-10-13 22:32:26,552 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:32:26,552 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:26,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:26,553 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:26,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-10-13 22:32:27,216 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-13 22:32:27,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:27,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:32:27,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:27,357 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:27,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987902138] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:27,358 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:27,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2021-10-13 22:32:27,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080878261] [2021-10-13 22:32:27,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 22:32:27,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:27,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 22:32:27,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-10-13 22:32:27,358 INFO L87 Difference]: Start difference. First operand 2128 states and 5888 transitions. Second operand has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:27,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:27,551 INFO L93 Difference]: Finished difference Result 3598 states and 9621 transitions. [2021-10-13 22:32:27,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-13 22:32:27,552 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-10-13 22:32:27,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:27,556 INFO L225 Difference]: With dead ends: 3598 [2021-10-13 22:32:27,556 INFO L226 Difference]: Without dead ends: 3328 [2021-10-13 22:32:27,556 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 165.9ms TimeCoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2021-10-13 22:32:27,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3328 states. [2021-10-13 22:32:27,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3328 to 2308. [2021-10-13 22:32:27,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2308 states, 2307 states have (on average 2.7945383615084527) internal successors, (6447), 2307 states have internal predecessors, (6447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:27,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2308 states to 2308 states and 6447 transitions. [2021-10-13 22:32:27,586 INFO L78 Accepts]: Start accepts. Automaton has 2308 states and 6447 transitions. Word has length 70 [2021-10-13 22:32:27,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:27,586 INFO L470 AbstractCegarLoop]: Abstraction has 2308 states and 6447 transitions. [2021-10-13 22:32:27,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:27,586 INFO L276 IsEmpty]: Start isEmpty. Operand 2308 states and 6447 transitions. [2021-10-13 22:32:27,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-10-13 22:32:27,588 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:27,589 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:27,609 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2021-10-13 22:32:27,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-10-13 22:32:27,806 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:27,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:27,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1321543951, now seen corresponding path program 31 times [2021-10-13 22:32:27,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:27,806 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896285011] [2021-10-13 22:32:27,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:27,806 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:27,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:27,883 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:27,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:27,883 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896285011] [2021-10-13 22:32:27,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896285011] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:27,883 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440263446] [2021-10-13 22:32:27,883 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:32:27,883 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:27,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:27,884 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:27,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-10-13 22:32:28,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:28,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:32:28,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:28,734 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:28,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440263446] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:28,735 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:28,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2021-10-13 22:32:28,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589787528] [2021-10-13 22:32:28,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 22:32:28,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:28,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 22:32:28,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-10-13 22:32:28,735 INFO L87 Difference]: Start difference. First operand 2308 states and 6447 transitions. Second operand has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:29,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:29,053 INFO L93 Difference]: Finished difference Result 3421 states and 9121 transitions. [2021-10-13 22:32:29,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-13 22:32:29,053 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-10-13 22:32:29,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:29,056 INFO L225 Difference]: With dead ends: 3421 [2021-10-13 22:32:29,056 INFO L226 Difference]: Without dead ends: 2846 [2021-10-13 22:32:29,057 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 267.6ms TimeCoverageRelationStatistics Valid=357, Invalid=1049, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 22:32:29,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2846 states. [2021-10-13 22:32:29,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2846 to 1803. [2021-10-13 22:32:29,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1803 states, 1802 states have (on average 2.7291897891231964) internal successors, (4918), 1802 states have internal predecessors, (4918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:29,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1803 states to 1803 states and 4918 transitions. [2021-10-13 22:32:29,084 INFO L78 Accepts]: Start accepts. Automaton has 1803 states and 4918 transitions. Word has length 70 [2021-10-13 22:32:29,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:29,085 INFO L470 AbstractCegarLoop]: Abstraction has 1803 states and 4918 transitions. [2021-10-13 22:32:29,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:29,085 INFO L276 IsEmpty]: Start isEmpty. Operand 1803 states and 4918 transitions. [2021-10-13 22:32:29,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-10-13 22:32:29,087 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:29,087 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:29,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2021-10-13 22:32:29,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-10-13 22:32:29,305 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:29,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:29,305 INFO L82 PathProgramCache]: Analyzing trace with hash 277252282, now seen corresponding path program 32 times [2021-10-13 22:32:29,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:29,305 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961543692] [2021-10-13 22:32:29,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:29,305 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:29,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:29,414 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:29,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:29,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961543692] [2021-10-13 22:32:29,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961543692] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:29,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135217420] [2021-10-13 22:32:29,414 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:32:29,414 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:29,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:29,415 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:29,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-10-13 22:32:30,146 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:32:30,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:30,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 22:32:30,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:30,370 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:30,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135217420] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:30,370 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:30,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2021-10-13 22:32:30,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136977400] [2021-10-13 22:32:30,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 22:32:30,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:30,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 22:32:30,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-10-13 22:32:30,371 INFO L87 Difference]: Start difference. First operand 1803 states and 4918 transitions. Second operand has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 15 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:30,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:30,542 INFO L93 Difference]: Finished difference Result 2621 states and 6757 transitions. [2021-10-13 22:32:30,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 22:32:30,542 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 15 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-10-13 22:32:30,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:30,545 INFO L225 Difference]: With dead ends: 2621 [2021-10-13 22:32:30,545 INFO L226 Difference]: Without dead ends: 2351 [2021-10-13 22:32:30,546 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 166.0ms TimeCoverageRelationStatistics Valid=200, Invalid=612, Unknown=0, NotChecked=0, Total=812 [2021-10-13 22:32:30,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2351 states. [2021-10-13 22:32:30,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2351 to 1878. [2021-10-13 22:32:30,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1878 states, 1877 states have (on average 2.7400106553010124) internal successors, (5143), 1877 states have internal predecessors, (5143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:30,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1878 states to 1878 states and 5143 transitions. [2021-10-13 22:32:30,570 INFO L78 Accepts]: Start accepts. Automaton has 1878 states and 5143 transitions. Word has length 75 [2021-10-13 22:32:30,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:30,570 INFO L470 AbstractCegarLoop]: Abstraction has 1878 states and 5143 transitions. [2021-10-13 22:32:30,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 15 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:30,571 INFO L276 IsEmpty]: Start isEmpty. Operand 1878 states and 5143 transitions. [2021-10-13 22:32:30,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-10-13 22:32:30,573 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:30,573 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:30,592 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2021-10-13 22:32:30,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:30,787 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:30,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:30,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1151245738, now seen corresponding path program 33 times [2021-10-13 22:32:30,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:30,788 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301449741] [2021-10-13 22:32:30,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:30,788 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:30,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:30,893 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:30,893 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:30,893 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301449741] [2021-10-13 22:32:30,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301449741] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:30,893 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241929388] [2021-10-13 22:32:30,893 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:32:30,894 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:30,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:30,894 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:30,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-10-13 22:32:31,644 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-13 22:32:31,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:31,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 22:32:31,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:31,886 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:31,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241929388] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:31,886 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:31,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 16 [2021-10-13 22:32:31,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164162683] [2021-10-13 22:32:31,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 22:32:31,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:31,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 22:32:31,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-10-13 22:32:31,887 INFO L87 Difference]: Start difference. First operand 1878 states and 5143 transitions. Second operand has 16 states, 16 states have (on average 4.9375) internal successors, (79), 16 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:32,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:32,081 INFO L93 Difference]: Finished difference Result 2841 states and 7272 transitions. [2021-10-13 22:32:32,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-13 22:32:32,081 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.9375) internal successors, (79), 16 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-10-13 22:32:32,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:32,084 INFO L225 Difference]: With dead ends: 2841 [2021-10-13 22:32:32,084 INFO L226 Difference]: Without dead ends: 2571 [2021-10-13 22:32:32,084 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 192.6ms TimeCoverageRelationStatistics Valid=240, Invalid=752, Unknown=0, NotChecked=0, Total=992 [2021-10-13 22:32:32,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2571 states. [2021-10-13 22:32:32,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2571 to 1953. [2021-10-13 22:32:32,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1953 states, 1952 states have (on average 2.75) internal successors, (5368), 1952 states have internal predecessors, (5368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:32,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1953 states to 1953 states and 5368 transitions. [2021-10-13 22:32:32,107 INFO L78 Accepts]: Start accepts. Automaton has 1953 states and 5368 transitions. Word has length 75 [2021-10-13 22:32:32,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:32,108 INFO L470 AbstractCegarLoop]: Abstraction has 1953 states and 5368 transitions. [2021-10-13 22:32:32,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.9375) internal successors, (79), 16 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:32,108 INFO L276 IsEmpty]: Start isEmpty. Operand 1953 states and 5368 transitions. [2021-10-13 22:32:32,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-10-13 22:32:32,110 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:32,110 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:32,129 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2021-10-13 22:32:32,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:32,310 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:32,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:32,311 INFO L82 PathProgramCache]: Analyzing trace with hash 1646539448, now seen corresponding path program 34 times [2021-10-13 22:32:32,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:32,311 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602194077] [2021-10-13 22:32:32,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:32,311 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:32,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:32,399 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:32,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:32,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602194077] [2021-10-13 22:32:32,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602194077] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:32,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498492349] [2021-10-13 22:32:32,399 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:32:32,399 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:32,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:32,401 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:32,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-10-13 22:32:33,158 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:32:33,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:33,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 22:32:33,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:33,371 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:33,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498492349] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:33,371 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:33,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2021-10-13 22:32:33,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798035151] [2021-10-13 22:32:33,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 22:32:33,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:33,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 22:32:33,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-10-13 22:32:33,372 INFO L87 Difference]: Start difference. First operand 1953 states and 5368 transitions. Second operand has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 15 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:33,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:33,559 INFO L93 Difference]: Finished difference Result 2871 states and 7407 transitions. [2021-10-13 22:32:33,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-13 22:32:33,560 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 15 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-10-13 22:32:33,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:33,563 INFO L225 Difference]: With dead ends: 2871 [2021-10-13 22:32:33,563 INFO L226 Difference]: Without dead ends: 2601 [2021-10-13 22:32:33,563 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 170.4ms TimeCoverageRelationStatistics Valid=248, Invalid=744, Unknown=0, NotChecked=0, Total=992 [2021-10-13 22:32:33,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2601 states. [2021-10-13 22:32:33,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2601 to 2028. [2021-10-13 22:32:33,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2028 states, 2027 states have (on average 2.759250123334978) internal successors, (5593), 2027 states have internal predecessors, (5593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:33,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2028 states to 2028 states and 5593 transitions. [2021-10-13 22:32:33,602 INFO L78 Accepts]: Start accepts. Automaton has 2028 states and 5593 transitions. Word has length 75 [2021-10-13 22:32:33,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:33,603 INFO L470 AbstractCegarLoop]: Abstraction has 2028 states and 5593 transitions. [2021-10-13 22:32:33,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 15 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:33,604 INFO L276 IsEmpty]: Start isEmpty. Operand 2028 states and 5593 transitions. [2021-10-13 22:32:33,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-10-13 22:32:33,606 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:33,606 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:33,627 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2021-10-13 22:32:33,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:33,811 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:33,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:33,812 INFO L82 PathProgramCache]: Analyzing trace with hash -898321496, now seen corresponding path program 35 times [2021-10-13 22:32:33,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:33,812 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598401154] [2021-10-13 22:32:33,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:33,812 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:33,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:33,902 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:33,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:33,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598401154] [2021-10-13 22:32:33,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598401154] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:33,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43427127] [2021-10-13 22:32:33,903 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:32:33,903 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:33,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:33,903 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:33,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-10-13 22:32:34,689 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-10-13 22:32:34,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:34,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 22:32:34,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:34,908 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:34,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43427127] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:34,909 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:34,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 16 [2021-10-13 22:32:34,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636871016] [2021-10-13 22:32:34,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 22:32:34,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:34,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 22:32:34,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2021-10-13 22:32:34,910 INFO L87 Difference]: Start difference. First operand 2028 states and 5593 transitions. Second operand has 16 states, 16 states have (on average 4.9375) internal successors, (79), 16 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:35,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:35,150 INFO L93 Difference]: Finished difference Result 2896 states and 7532 transitions. [2021-10-13 22:32:35,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 22:32:35,151 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.9375) internal successors, (79), 16 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-10-13 22:32:35,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:35,154 INFO L225 Difference]: With dead ends: 2896 [2021-10-13 22:32:35,154 INFO L226 Difference]: Without dead ends: 2626 [2021-10-13 22:32:35,154 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 227.3ms TimeCoverageRelationStatistics Valid=271, Invalid=851, Unknown=0, NotChecked=0, Total=1122 [2021-10-13 22:32:35,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2626 states. [2021-10-13 22:32:35,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2626 to 2103. [2021-10-13 22:32:35,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2103 states, 2102 states have (on average 2.7678401522359657) internal successors, (5818), 2102 states have internal predecessors, (5818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:35,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2103 states to 2103 states and 5818 transitions. [2021-10-13 22:32:35,177 INFO L78 Accepts]: Start accepts. Automaton has 2103 states and 5818 transitions. Word has length 75 [2021-10-13 22:32:35,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:35,177 INFO L470 AbstractCegarLoop]: Abstraction has 2103 states and 5818 transitions. [2021-10-13 22:32:35,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.9375) internal successors, (79), 16 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:35,177 INFO L276 IsEmpty]: Start isEmpty. Operand 2103 states and 5818 transitions. [2021-10-13 22:32:35,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-10-13 22:32:35,179 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:35,179 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:35,199 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2021-10-13 22:32:35,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2021-10-13 22:32:35,383 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:35,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:35,384 INFO L82 PathProgramCache]: Analyzing trace with hash 11575862, now seen corresponding path program 36 times [2021-10-13 22:32:35,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:35,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664245890] [2021-10-13 22:32:35,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:35,384 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:35,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:35,479 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:35,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:35,479 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664245890] [2021-10-13 22:32:35,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664245890] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:35,479 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487335049] [2021-10-13 22:32:35,479 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:32:35,479 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:35,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:35,480 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:35,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2021-10-13 22:32:36,315 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-10-13 22:32:36,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:36,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 22:32:36,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:36,496 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:36,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487335049] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:36,497 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:36,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2021-10-13 22:32:36,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299436092] [2021-10-13 22:32:36,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 22:32:36,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:36,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 22:32:36,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-10-13 22:32:36,498 INFO L87 Difference]: Start difference. First operand 2103 states and 5818 transitions. Second operand has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 15 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:36,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:36,704 INFO L93 Difference]: Finished difference Result 2966 states and 7777 transitions. [2021-10-13 22:32:36,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-13 22:32:36,704 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 15 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-10-13 22:32:36,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:36,707 INFO L225 Difference]: With dead ends: 2966 [2021-10-13 22:32:36,708 INFO L226 Difference]: Without dead ends: 2696 [2021-10-13 22:32:36,708 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 190.4ms TimeCoverageRelationStatistics Valid=293, Invalid=829, Unknown=0, NotChecked=0, Total=1122 [2021-10-13 22:32:36,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2696 states. [2021-10-13 22:32:36,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2696 to 2178. [2021-10-13 22:32:36,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2178 states, 2177 states have (on average 2.782728525493799) internal successors, (6058), 2177 states have internal predecessors, (6058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:36,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2178 states to 2178 states and 6058 transitions. [2021-10-13 22:32:36,735 INFO L78 Accepts]: Start accepts. Automaton has 2178 states and 6058 transitions. Word has length 75 [2021-10-13 22:32:36,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:36,735 INFO L470 AbstractCegarLoop]: Abstraction has 2178 states and 6058 transitions. [2021-10-13 22:32:36,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 15 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:36,735 INFO L276 IsEmpty]: Start isEmpty. Operand 2178 states and 6058 transitions. [2021-10-13 22:32:36,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-10-13 22:32:36,737 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:36,737 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:36,755 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2021-10-13 22:32:36,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-10-13 22:32:36,938 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:36,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:36,938 INFO L82 PathProgramCache]: Analyzing trace with hash 143691558, now seen corresponding path program 37 times [2021-10-13 22:32:36,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:36,938 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196823167] [2021-10-13 22:32:36,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:36,939 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:36,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:37,028 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:37,028 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:37,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196823167] [2021-10-13 22:32:37,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196823167] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:37,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516612589] [2021-10-13 22:32:37,029 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:32:37,029 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:37,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:37,031 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:37,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2021-10-13 22:32:37,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:37,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 22:32:37,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:38,078 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:38,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516612589] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:38,079 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:38,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 16 [2021-10-13 22:32:38,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280935822] [2021-10-13 22:32:38,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 22:32:38,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:38,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 22:32:38,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-10-13 22:32:38,080 INFO L87 Difference]: Start difference. First operand 2178 states and 6058 transitions. Second operand has 16 states, 16 states have (on average 4.9375) internal successors, (79), 16 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:38,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:38,411 INFO L93 Difference]: Finished difference Result 3544 states and 9403 transitions. [2021-10-13 22:32:38,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-13 22:32:38,411 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.9375) internal successors, (79), 16 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-10-13 22:32:38,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:38,414 INFO L225 Difference]: With dead ends: 3544 [2021-10-13 22:32:38,414 INFO L226 Difference]: Without dead ends: 2921 [2021-10-13 22:32:38,415 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 280.8ms TimeCoverageRelationStatistics Valid=341, Invalid=1065, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 22:32:38,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2921 states. [2021-10-13 22:32:38,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2921 to 2253. [2021-10-13 22:32:38,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2253 states, 2252 states have (on average 2.7921847246891653) internal successors, (6288), 2252 states have internal predecessors, (6288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:38,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2253 states to 2253 states and 6288 transitions. [2021-10-13 22:32:38,436 INFO L78 Accepts]: Start accepts. Automaton has 2253 states and 6288 transitions. Word has length 75 [2021-10-13 22:32:38,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:38,436 INFO L470 AbstractCegarLoop]: Abstraction has 2253 states and 6288 transitions. [2021-10-13 22:32:38,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.9375) internal successors, (79), 16 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:38,436 INFO L276 IsEmpty]: Start isEmpty. Operand 2253 states and 6288 transitions. [2021-10-13 22:32:38,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-10-13 22:32:38,438 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:38,438 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:38,459 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2021-10-13 22:32:38,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2021-10-13 22:32:38,657 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:38,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:38,657 INFO L82 PathProgramCache]: Analyzing trace with hash -312690892, now seen corresponding path program 38 times [2021-10-13 22:32:38,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:38,657 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156839958] [2021-10-13 22:32:38,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:38,657 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:38,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:38,746 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:38,746 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:38,746 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156839958] [2021-10-13 22:32:38,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156839958] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:38,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889779798] [2021-10-13 22:32:38,747 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:32:38,747 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:38,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:38,747 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:38,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2021-10-13 22:32:39,724 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:32:39,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:39,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 22:32:39,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:39,890 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:39,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889779798] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:39,890 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:39,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2021-10-13 22:32:39,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568167849] [2021-10-13 22:32:39,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 22:32:39,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:39,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 22:32:39,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-10-13 22:32:39,891 INFO L87 Difference]: Start difference. First operand 2253 states and 6288 transitions. Second operand has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 15 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:40,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:40,122 INFO L93 Difference]: Finished difference Result 3748 states and 10071 transitions. [2021-10-13 22:32:40,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-13 22:32:40,122 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 15 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-10-13 22:32:40,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:40,126 INFO L225 Difference]: With dead ends: 3748 [2021-10-13 22:32:40,126 INFO L226 Difference]: Without dead ends: 3478 [2021-10-13 22:32:40,127 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 205.7ms TimeCoverageRelationStatistics Valid=355, Invalid=905, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 22:32:40,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3478 states. [2021-10-13 22:32:40,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3478 to 2433. [2021-10-13 22:32:40,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2433 states, 2432 states have (on average 2.815378289473684) internal successors, (6847), 2432 states have internal predecessors, (6847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:40,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2433 states to 2433 states and 6847 transitions. [2021-10-13 22:32:40,154 INFO L78 Accepts]: Start accepts. Automaton has 2433 states and 6847 transitions. Word has length 75 [2021-10-13 22:32:40,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:40,154 INFO L470 AbstractCegarLoop]: Abstraction has 2433 states and 6847 transitions. [2021-10-13 22:32:40,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 15 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:40,154 INFO L276 IsEmpty]: Start isEmpty. Operand 2433 states and 6847 transitions. [2021-10-13 22:32:40,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-10-13 22:32:40,156 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:40,156 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:40,174 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2021-10-13 22:32:40,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-10-13 22:32:40,357 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:40,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:40,357 INFO L82 PathProgramCache]: Analyzing trace with hash -247448602, now seen corresponding path program 39 times [2021-10-13 22:32:40,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:40,357 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653669366] [2021-10-13 22:32:40,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:40,358 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:40,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:40,446 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:40,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:40,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653669366] [2021-10-13 22:32:40,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653669366] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:40,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538203861] [2021-10-13 22:32:40,471 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:32:40,471 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:40,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:40,472 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:40,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2021-10-13 22:32:41,402 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-13 22:32:41,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:41,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 22:32:41,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:41,564 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:41,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538203861] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:41,565 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:41,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 16 [2021-10-13 22:32:41,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194916787] [2021-10-13 22:32:41,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 22:32:41,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:41,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 22:32:41,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-10-13 22:32:41,566 INFO L87 Difference]: Start difference. First operand 2433 states and 6847 transitions. Second operand has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:41,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:41,910 INFO L93 Difference]: Finished difference Result 3616 states and 9736 transitions. [2021-10-13 22:32:41,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-13 22:32:41,911 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-10-13 22:32:41,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:41,914 INFO L225 Difference]: With dead ends: 3616 [2021-10-13 22:32:41,914 INFO L226 Difference]: Without dead ends: 3041 [2021-10-13 22:32:41,915 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 299.1ms TimeCoverageRelationStatistics Valid=416, Invalid=1224, Unknown=0, NotChecked=0, Total=1640 [2021-10-13 22:32:41,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3041 states. [2021-10-13 22:32:41,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3041 to 1724. [2021-10-13 22:32:41,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1724 states, 1723 states have (on average 2.731282646546721) internal successors, (4706), 1723 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:41,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1724 states to 1724 states and 4706 transitions. [2021-10-13 22:32:41,935 INFO L78 Accepts]: Start accepts. Automaton has 1724 states and 4706 transitions. Word has length 75 [2021-10-13 22:32:41,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:41,935 INFO L470 AbstractCegarLoop]: Abstraction has 1724 states and 4706 transitions. [2021-10-13 22:32:41,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:41,935 INFO L276 IsEmpty]: Start isEmpty. Operand 1724 states and 4706 transitions. [2021-10-13 22:32:41,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-13 22:32:41,937 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:41,937 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:41,955 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2021-10-13 22:32:42,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:42,138 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:42,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:42,138 INFO L82 PathProgramCache]: Analyzing trace with hash -667649264, now seen corresponding path program 40 times [2021-10-13 22:32:42,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:42,138 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980454434] [2021-10-13 22:32:42,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:42,138 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:42,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:42,253 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:42,254 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:42,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980454434] [2021-10-13 22:32:42,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980454434] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:42,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803879938] [2021-10-13 22:32:42,254 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:32:42,254 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:42,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:42,255 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:42,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2021-10-13 22:32:43,139 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:32:43,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:43,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 22:32:43,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:43,487 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:43,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [803879938] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:43,487 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:43,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 19 [2021-10-13 22:32:43,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662857543] [2021-10-13 22:32:43,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:32:43,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:43,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:32:43,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:32:43,488 INFO L87 Difference]: Start difference. First operand 1724 states and 4706 transitions. Second operand has 19 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 19 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:43,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:43,723 INFO L93 Difference]: Finished difference Result 2614 states and 6806 transitions. [2021-10-13 22:32:43,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-13 22:32:43,723 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 19 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-10-13 22:32:43,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:43,726 INFO L225 Difference]: With dead ends: 2614 [2021-10-13 22:32:43,726 INFO L226 Difference]: Without dead ends: 2280 [2021-10-13 22:32:43,727 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 231.9ms TimeCoverageRelationStatistics Valid=308, Invalid=882, Unknown=0, NotChecked=0, Total=1190 [2021-10-13 22:32:43,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2280 states. [2021-10-13 22:32:43,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2280 to 1809. [2021-10-13 22:32:43,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1809 states, 1808 states have (on average 2.6969026548672566) internal successors, (4876), 1808 states have internal predecessors, (4876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:43,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1809 states to 1809 states and 4876 transitions. [2021-10-13 22:32:43,747 INFO L78 Accepts]: Start accepts. Automaton has 1809 states and 4876 transitions. Word has length 80 [2021-10-13 22:32:43,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:43,747 INFO L470 AbstractCegarLoop]: Abstraction has 1809 states and 4876 transitions. [2021-10-13 22:32:43,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 19 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:43,748 INFO L276 IsEmpty]: Start isEmpty. Operand 1809 states and 4876 transitions. [2021-10-13 22:32:43,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-13 22:32:43,749 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:43,749 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:43,770 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2021-10-13 22:32:43,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-10-13 22:32:43,959 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:43,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:43,960 INFO L82 PathProgramCache]: Analyzing trace with hash 1345956948, now seen corresponding path program 41 times [2021-10-13 22:32:43,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:43,960 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131440139] [2021-10-13 22:32:43,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:43,960 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:43,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:44,087 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:44,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:44,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131440139] [2021-10-13 22:32:44,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131440139] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:44,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699224323] [2021-10-13 22:32:44,088 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:32:44,088 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:44,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:44,089 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:44,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2021-10-13 22:32:45,013 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-10-13 22:32:45,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:45,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 22:32:45,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:45,270 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:45,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699224323] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:45,270 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:45,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2021-10-13 22:32:45,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767413377] [2021-10-13 22:32:45,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 22:32:45,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:45,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 22:32:45,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-10-13 22:32:45,271 INFO L87 Difference]: Start difference. First operand 1809 states and 4876 transitions. Second operand has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:45,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:45,426 INFO L93 Difference]: Finished difference Result 3036 states and 7587 transitions. [2021-10-13 22:32:45,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 22:32:45,426 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-10-13 22:32:45,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:45,430 INFO L225 Difference]: With dead ends: 3036 [2021-10-13 22:32:45,430 INFO L226 Difference]: Without dead ends: 2766 [2021-10-13 22:32:45,430 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 171.0ms TimeCoverageRelationStatistics Valid=215, Invalid=597, Unknown=0, NotChecked=0, Total=812 [2021-10-13 22:32:45,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2766 states. [2021-10-13 22:32:45,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2766 to 1953. [2021-10-13 22:32:45,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1953 states, 1952 states have (on average 2.711577868852459) internal successors, (5293), 1952 states have internal predecessors, (5293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:45,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1953 states to 1953 states and 5293 transitions. [2021-10-13 22:32:45,464 INFO L78 Accepts]: Start accepts. Automaton has 1953 states and 5293 transitions. Word has length 80 [2021-10-13 22:32:45,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:45,464 INFO L470 AbstractCegarLoop]: Abstraction has 1953 states and 5293 transitions. [2021-10-13 22:32:45,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:45,464 INFO L276 IsEmpty]: Start isEmpty. Operand 1953 states and 5293 transitions. [2021-10-13 22:32:45,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-13 22:32:45,466 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:45,466 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:45,484 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2021-10-13 22:32:45,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-10-13 22:32:45,667 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:45,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:45,668 INFO L82 PathProgramCache]: Analyzing trace with hash -1162848956, now seen corresponding path program 42 times [2021-10-13 22:32:45,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:45,668 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592737139] [2021-10-13 22:32:45,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:45,668 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:45,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:45,788 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:45,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:45,788 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592737139] [2021-10-13 22:32:45,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592737139] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:45,788 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108425500] [2021-10-13 22:32:45,789 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:32:45,789 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:45,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:45,791 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:45,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2021-10-13 22:32:46,764 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-10-13 22:32:46,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:46,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 22:32:46,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:47,018 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:47,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1108425500] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:47,018 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:47,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-10-13 22:32:47,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062544944] [2021-10-13 22:32:47,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 22:32:47,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:47,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 22:32:47,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2021-10-13 22:32:47,020 INFO L87 Difference]: Start difference. First operand 1953 states and 5293 transitions. Second operand has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 17 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:47,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:47,222 INFO L93 Difference]: Finished difference Result 2996 states and 7582 transitions. [2021-10-13 22:32:47,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-13 22:32:47,222 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 17 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-10-13 22:32:47,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:47,225 INFO L225 Difference]: With dead ends: 2996 [2021-10-13 22:32:47,225 INFO L226 Difference]: Without dead ends: 2726 [2021-10-13 22:32:47,226 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 205.6ms TimeCoverageRelationStatistics Valid=264, Invalid=792, Unknown=0, NotChecked=0, Total=1056 [2021-10-13 22:32:47,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2726 states. [2021-10-13 22:32:47,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2726 to 2028. [2021-10-13 22:32:47,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2028 states, 2027 states have (on average 2.7222496299950665) internal successors, (5518), 2027 states have internal predecessors, (5518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:47,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2028 states to 2028 states and 5518 transitions. [2021-10-13 22:32:47,247 INFO L78 Accepts]: Start accepts. Automaton has 2028 states and 5518 transitions. Word has length 80 [2021-10-13 22:32:47,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:47,247 INFO L470 AbstractCegarLoop]: Abstraction has 2028 states and 5518 transitions. [2021-10-13 22:32:47,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 17 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:47,248 INFO L276 IsEmpty]: Start isEmpty. Operand 2028 states and 5518 transitions. [2021-10-13 22:32:47,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-13 22:32:47,249 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:47,250 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:47,268 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2021-10-13 22:32:47,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2021-10-13 22:32:47,450 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:47,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:47,450 INFO L82 PathProgramCache]: Analyzing trace with hash -1233030958, now seen corresponding path program 43 times [2021-10-13 22:32:47,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:47,451 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792791329] [2021-10-13 22:32:47,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:47,451 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:47,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:47,552 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:47,552 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:47,552 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792791329] [2021-10-13 22:32:47,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792791329] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:47,552 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675717646] [2021-10-13 22:32:47,552 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:32:47,552 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:47,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:47,553 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:47,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2021-10-13 22:32:48,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:48,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 22:32:48,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:48,784 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:48,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675717646] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:48,784 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:48,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2021-10-13 22:32:48,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558038638] [2021-10-13 22:32:48,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 22:32:48,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:48,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 22:32:48,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-10-13 22:32:48,785 INFO L87 Difference]: Start difference. First operand 2028 states and 5518 transitions. Second operand has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:48,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:48,957 INFO L93 Difference]: Finished difference Result 3046 states and 7757 transitions. [2021-10-13 22:32:48,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-13 22:32:48,957 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-10-13 22:32:48,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:48,961 INFO L225 Difference]: With dead ends: 3046 [2021-10-13 22:32:48,961 INFO L226 Difference]: Without dead ends: 2776 [2021-10-13 22:32:48,961 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 167.8ms TimeCoverageRelationStatistics Valid=229, Invalid=701, Unknown=0, NotChecked=0, Total=930 [2021-10-13 22:32:48,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2776 states. [2021-10-13 22:32:48,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2776 to 2103. [2021-10-13 22:32:48,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2103 states, 2102 states have (on average 2.7321598477640343) internal successors, (5743), 2102 states have internal predecessors, (5743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:48,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2103 states to 2103 states and 5743 transitions. [2021-10-13 22:32:48,983 INFO L78 Accepts]: Start accepts. Automaton has 2103 states and 5743 transitions. Word has length 80 [2021-10-13 22:32:48,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:48,983 INFO L470 AbstractCegarLoop]: Abstraction has 2103 states and 5743 transitions. [2021-10-13 22:32:48,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:48,983 INFO L276 IsEmpty]: Start isEmpty. Operand 2103 states and 5743 transitions. [2021-10-13 22:32:48,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-13 22:32:48,985 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:48,985 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:49,004 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2021-10-13 22:32:49,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:49,195 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:49,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:49,196 INFO L82 PathProgramCache]: Analyzing trace with hash -359037502, now seen corresponding path program 44 times [2021-10-13 22:32:49,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:49,196 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060553663] [2021-10-13 22:32:49,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:49,196 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:49,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:49,298 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:49,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:49,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060553663] [2021-10-13 22:32:49,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060553663] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:49,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563011261] [2021-10-13 22:32:49,299 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:32:49,299 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:49,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:49,299 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:49,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2021-10-13 22:32:50,319 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:32:50,319 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:50,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 22:32:50,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:50,572 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:50,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563011261] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:50,573 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:50,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-10-13 22:32:50,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145082821] [2021-10-13 22:32:50,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 22:32:50,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:50,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 22:32:50,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2021-10-13 22:32:50,573 INFO L87 Difference]: Start difference. First operand 2103 states and 5743 transitions. Second operand has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 17 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:50,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:50,812 INFO L93 Difference]: Finished difference Result 3071 states and 7882 transitions. [2021-10-13 22:32:50,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 22:32:50,812 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 17 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-10-13 22:32:50,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:50,815 INFO L225 Difference]: With dead ends: 3071 [2021-10-13 22:32:50,815 INFO L226 Difference]: Without dead ends: 2801 [2021-10-13 22:32:50,816 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 227.3ms TimeCoverageRelationStatistics Valid=286, Invalid=904, Unknown=0, NotChecked=0, Total=1190 [2021-10-13 22:32:50,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2801 states. [2021-10-13 22:32:50,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2801 to 2178. [2021-10-13 22:32:50,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2178 states, 2177 states have (on average 2.7413872301332107) internal successors, (5968), 2177 states have internal predecessors, (5968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:50,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2178 states to 2178 states and 5968 transitions. [2021-10-13 22:32:50,839 INFO L78 Accepts]: Start accepts. Automaton has 2178 states and 5968 transitions. Word has length 80 [2021-10-13 22:32:50,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:50,839 INFO L470 AbstractCegarLoop]: Abstraction has 2178 states and 5968 transitions. [2021-10-13 22:32:50,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 17 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:50,839 INFO L276 IsEmpty]: Start isEmpty. Operand 2178 states and 5968 transitions. [2021-10-13 22:32:50,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-13 22:32:50,841 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:50,841 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:50,860 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2021-10-13 22:32:51,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:51,047 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:51,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:51,048 INFO L82 PathProgramCache]: Analyzing trace with hash 136256208, now seen corresponding path program 45 times [2021-10-13 22:32:51,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:51,048 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122978089] [2021-10-13 22:32:51,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:51,048 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:51,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:51,146 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:51,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:51,147 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122978089] [2021-10-13 22:32:51,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122978089] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:51,147 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592900095] [2021-10-13 22:32:51,147 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:32:51,147 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:51,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:51,148 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:51,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2021-10-13 22:32:52,199 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-13 22:32:52,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:52,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 22:32:52,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:52,412 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:52,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592900095] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:52,413 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:52,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2021-10-13 22:32:52,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717813899] [2021-10-13 22:32:52,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 22:32:52,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:52,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 22:32:52,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-10-13 22:32:52,414 INFO L87 Difference]: Start difference. First operand 2178 states and 5968 transitions. Second operand has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:52,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:52,639 INFO L93 Difference]: Finished difference Result 3096 states and 8007 transitions. [2021-10-13 22:32:52,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-13 22:32:52,639 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-10-13 22:32:52,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:52,642 INFO L225 Difference]: With dead ends: 3096 [2021-10-13 22:32:52,642 INFO L226 Difference]: Without dead ends: 2826 [2021-10-13 22:32:52,642 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 186.5ms TimeCoverageRelationStatistics Valid=259, Invalid=797, Unknown=0, NotChecked=0, Total=1056 [2021-10-13 22:32:52,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2826 states. [2021-10-13 22:32:52,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2826 to 2253. [2021-10-13 22:32:52,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2253 states, 2252 states have (on average 2.75) internal successors, (6193), 2252 states have internal predecessors, (6193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:52,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2253 states to 2253 states and 6193 transitions. [2021-10-13 22:32:52,665 INFO L78 Accepts]: Start accepts. Automaton has 2253 states and 6193 transitions. Word has length 80 [2021-10-13 22:32:52,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:52,665 INFO L470 AbstractCegarLoop]: Abstraction has 2253 states and 6193 transitions. [2021-10-13 22:32:52,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:52,665 INFO L276 IsEmpty]: Start isEmpty. Operand 2253 states and 6193 transitions. [2021-10-13 22:32:52,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-13 22:32:52,667 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:52,667 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:52,686 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2021-10-13 22:32:52,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:52,868 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:52,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:52,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1886362560, now seen corresponding path program 46 times [2021-10-13 22:32:52,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:52,868 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152130169] [2021-10-13 22:32:52,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:52,869 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:52,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:52,972 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:52,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:52,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152130169] [2021-10-13 22:32:52,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152130169] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:52,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56045965] [2021-10-13 22:32:52,973 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:32:52,973 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:52,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:52,974 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:52,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2021-10-13 22:32:54,048 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:32:54,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:54,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 22:32:54,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:54,257 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:54,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56045965] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:54,257 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:54,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-10-13 22:32:54,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944162508] [2021-10-13 22:32:54,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 22:32:54,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:54,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 22:32:54,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2021-10-13 22:32:54,258 INFO L87 Difference]: Start difference. First operand 2253 states and 6193 transitions. Second operand has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 17 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:54,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:54,535 INFO L93 Difference]: Finished difference Result 3121 states and 8132 transitions. [2021-10-13 22:32:54,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-13 22:32:54,535 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 17 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-10-13 22:32:54,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:54,538 INFO L225 Difference]: With dead ends: 3121 [2021-10-13 22:32:54,538 INFO L226 Difference]: Without dead ends: 2851 [2021-10-13 22:32:54,539 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 260.8ms TimeCoverageRelationStatistics Valid=324, Invalid=1008, Unknown=0, NotChecked=0, Total=1332 [2021-10-13 22:32:54,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2851 states. [2021-10-13 22:32:54,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2851 to 2328. [2021-10-13 22:32:54,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2328 states, 2327 states have (on average 2.758057584873227) internal successors, (6418), 2327 states have internal predecessors, (6418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:54,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2328 states to 2328 states and 6418 transitions. [2021-10-13 22:32:54,563 INFO L78 Accepts]: Start accepts. Automaton has 2328 states and 6418 transitions. Word has length 80 [2021-10-13 22:32:54,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:54,564 INFO L470 AbstractCegarLoop]: Abstraction has 2328 states and 6418 transitions. [2021-10-13 22:32:54,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 17 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:54,564 INFO L276 IsEmpty]: Start isEmpty. Operand 2328 states and 6418 transitions. [2021-10-13 22:32:54,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-13 22:32:54,566 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:54,566 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:54,585 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2021-10-13 22:32:54,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2021-10-13 22:32:54,779 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:54,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:54,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1498707378, now seen corresponding path program 47 times [2021-10-13 22:32:54,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:54,780 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572971657] [2021-10-13 22:32:54,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:54,786 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:54,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:54,891 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:54,891 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:54,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572971657] [2021-10-13 22:32:54,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572971657] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:54,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325874165] [2021-10-13 22:32:54,892 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:32:54,892 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:54,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:54,893 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:54,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2021-10-13 22:32:55,983 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-10-13 22:32:55,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:55,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 22:32:55,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:56,172 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:56,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325874165] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:56,173 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:56,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2021-10-13 22:32:56,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991718960] [2021-10-13 22:32:56,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 22:32:56,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:56,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 22:32:56,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-10-13 22:32:56,174 INFO L87 Difference]: Start difference. First operand 2328 states and 6418 transitions. Second operand has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:56,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:56,412 INFO L93 Difference]: Finished difference Result 3191 states and 8377 transitions. [2021-10-13 22:32:56,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-13 22:32:56,412 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-10-13 22:32:56,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:56,416 INFO L225 Difference]: With dead ends: 3191 [2021-10-13 22:32:56,416 INFO L226 Difference]: Without dead ends: 2921 [2021-10-13 22:32:56,416 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 209.6ms TimeCoverageRelationStatistics Valid=305, Invalid=885, Unknown=0, NotChecked=0, Total=1190 [2021-10-13 22:32:56,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2921 states. [2021-10-13 22:32:56,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2921 to 2403. [2021-10-13 22:32:56,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2403 states, 2402 states have (on average 2.7718567860116567) internal successors, (6658), 2402 states have internal predecessors, (6658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:56,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2403 states to 2403 states and 6658 transitions. [2021-10-13 22:32:56,444 INFO L78 Accepts]: Start accepts. Automaton has 2403 states and 6658 transitions. Word has length 80 [2021-10-13 22:32:56,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:56,444 INFO L470 AbstractCegarLoop]: Abstraction has 2403 states and 6658 transitions. [2021-10-13 22:32:56,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:56,444 INFO L276 IsEmpty]: Start isEmpty. Operand 2403 states and 6658 transitions. [2021-10-13 22:32:56,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-13 22:32:56,446 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:56,446 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:56,465 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2021-10-13 22:32:56,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2021-10-13 22:32:56,647 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:56,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:56,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1366591682, now seen corresponding path program 48 times [2021-10-13 22:32:56,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:56,647 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803814235] [2021-10-13 22:32:56,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:56,647 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:56,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:56,737 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:56,738 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:56,738 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803814235] [2021-10-13 22:32:56,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803814235] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:56,738 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882222383] [2021-10-13 22:32:56,738 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:32:56,738 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:56,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:56,739 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:56,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2021-10-13 22:32:57,875 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-10-13 22:32:57,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:57,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 22:32:57,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:58,067 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:58,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882222383] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:58,067 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:58,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-10-13 22:32:58,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509930911] [2021-10-13 22:32:58,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 22:32:58,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:58,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 22:32:58,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2021-10-13 22:32:58,068 INFO L87 Difference]: Start difference. First operand 2403 states and 6658 transitions. Second operand has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 17 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:58,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:58,412 INFO L93 Difference]: Finished difference Result 3769 states and 10003 transitions. [2021-10-13 22:32:58,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-13 22:32:58,413 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 17 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-10-13 22:32:58,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:58,417 INFO L225 Difference]: With dead ends: 3769 [2021-10-13 22:32:58,417 INFO L226 Difference]: Without dead ends: 3146 [2021-10-13 22:32:58,417 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 299.2ms TimeCoverageRelationStatistics Valid=401, Invalid=1239, Unknown=0, NotChecked=0, Total=1640 [2021-10-13 22:32:58,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3146 states. [2021-10-13 22:32:58,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3146 to 2478. [2021-10-13 22:32:58,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2478 states, 2477 states have (on average 2.7807832054905126) internal successors, (6888), 2477 states have internal predecessors, (6888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:58,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2478 states to 2478 states and 6888 transitions. [2021-10-13 22:32:58,441 INFO L78 Accepts]: Start accepts. Automaton has 2478 states and 6888 transitions. Word has length 80 [2021-10-13 22:32:58,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:58,441 INFO L470 AbstractCegarLoop]: Abstraction has 2478 states and 6888 transitions. [2021-10-13 22:32:58,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 17 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:58,441 INFO L276 IsEmpty]: Start isEmpty. Operand 2478 states and 6888 transitions. [2021-10-13 22:32:58,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-13 22:32:58,443 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:58,443 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:58,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2021-10-13 22:32:58,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2021-10-13 22:32:58,644 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:58,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:58,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1822974132, now seen corresponding path program 49 times [2021-10-13 22:32:58,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:58,644 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422461310] [2021-10-13 22:32:58,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:58,645 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:58,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:58,728 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:58,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:58,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422461310] [2021-10-13 22:32:58,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422461310] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:58,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61793982] [2021-10-13 22:32:58,728 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:32:58,728 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:58,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:58,729 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:58,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2021-10-13 22:32:59,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:59,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 22:32:59,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:00,054 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:00,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61793982] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:00,055 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:00,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2021-10-13 22:33:00,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932216442] [2021-10-13 22:33:00,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 22:33:00,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:00,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 22:33:00,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-10-13 22:33:00,056 INFO L87 Difference]: Start difference. First operand 2478 states and 6888 transitions. Second operand has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:00,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:00,305 INFO L93 Difference]: Finished difference Result 3998 states and 10721 transitions. [2021-10-13 22:33:00,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-13 22:33:00,305 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-10-13 22:33:00,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:00,310 INFO L225 Difference]: With dead ends: 3998 [2021-10-13 22:33:00,310 INFO L226 Difference]: Without dead ends: 3728 [2021-10-13 22:33:00,310 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 210.9ms TimeCoverageRelationStatistics Valid=368, Invalid=964, Unknown=0, NotChecked=0, Total=1332 [2021-10-13 22:33:00,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3728 states. [2021-10-13 22:33:00,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3728 to 2658. [2021-10-13 22:33:00,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2658 states, 2657 states have (on average 2.8027850959729017) internal successors, (7447), 2657 states have internal predecessors, (7447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:00,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2658 states to 2658 states and 7447 transitions. [2021-10-13 22:33:00,340 INFO L78 Accepts]: Start accepts. Automaton has 2658 states and 7447 transitions. Word has length 80 [2021-10-13 22:33:00,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:00,340 INFO L470 AbstractCegarLoop]: Abstraction has 2658 states and 7447 transitions. [2021-10-13 22:33:00,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:00,340 INFO L276 IsEmpty]: Start isEmpty. Operand 2658 states and 7447 transitions. [2021-10-13 22:33:00,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-13 22:33:00,342 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:00,342 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:33:00,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2021-10-13 22:33:00,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-10-13 22:33:00,555 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:00,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:00,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1757731842, now seen corresponding path program 50 times [2021-10-13 22:33:00,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:00,556 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125445971] [2021-10-13 22:33:00,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:00,556 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:00,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:00,640 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:00,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:00,640 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125445971] [2021-10-13 22:33:00,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125445971] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:00,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885789344] [2021-10-13 22:33:00,641 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:33:00,641 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:00,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:00,641 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:33:00,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2021-10-13 22:33:01,801 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:33:01,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:01,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 22:33:01,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:01,967 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:01,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885789344] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:01,967 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:01,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2021-10-13 22:33:01,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093767653] [2021-10-13 22:33:01,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 22:33:01,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:01,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 22:33:01,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-10-13 22:33:01,968 INFO L87 Difference]: Start difference. First operand 2658 states and 7447 transitions. Second operand has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:02,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:02,320 INFO L93 Difference]: Finished difference Result 3485 states and 9421 transitions. [2021-10-13 22:33:02,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-13 22:33:02,321 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-10-13 22:33:02,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:02,324 INFO L225 Difference]: With dead ends: 3485 [2021-10-13 22:33:02,324 INFO L226 Difference]: Without dead ends: 2906 [2021-10-13 22:33:02,324 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 319.4ms TimeCoverageRelationStatistics Valid=434, Invalid=1126, Unknown=0, NotChecked=0, Total=1560 [2021-10-13 22:33:02,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2906 states. [2021-10-13 22:33:02,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2906 to 1913. [2021-10-13 22:33:02,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1913 states, 1912 states have (on average 2.7343096234309625) internal successors, (5228), 1912 states have internal predecessors, (5228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:02,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1913 states to 1913 states and 5228 transitions. [2021-10-13 22:33:02,346 INFO L78 Accepts]: Start accepts. Automaton has 1913 states and 5228 transitions. Word has length 80 [2021-10-13 22:33:02,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:02,346 INFO L470 AbstractCegarLoop]: Abstraction has 1913 states and 5228 transitions. [2021-10-13 22:33:02,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:02,346 INFO L276 IsEmpty]: Start isEmpty. Operand 1913 states and 5228 transitions. [2021-10-13 22:33:02,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-10-13 22:33:02,348 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:02,348 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:33:02,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2021-10-13 22:33:02,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2021-10-13 22:33:02,548 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:02,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:02,548 INFO L82 PathProgramCache]: Analyzing trace with hash 1972919915, now seen corresponding path program 51 times [2021-10-13 22:33:02,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:02,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76371908] [2021-10-13 22:33:02,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:02,549 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:02,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:02,756 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:02,756 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:02,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76371908] [2021-10-13 22:33:02,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76371908] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:02,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800464306] [2021-10-13 22:33:02,756 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:33:02,756 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:02,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:02,757 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:33:02,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2021-10-13 22:33:03,944 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-10-13 22:33:03,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:03,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 22:33:03,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:04,201 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:04,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800464306] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:04,202 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:04,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2021-10-13 22:33:04,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390321594] [2021-10-13 22:33:04,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 22:33:04,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:04,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 22:33:04,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2021-10-13 22:33:04,203 INFO L87 Difference]: Start difference. First operand 1913 states and 5228 transitions. Second operand has 17 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:04,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:04,412 INFO L93 Difference]: Finished difference Result 2831 states and 7267 transitions. [2021-10-13 22:33:04,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-13 22:33:04,413 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-10-13 22:33:04,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:04,415 INFO L225 Difference]: With dead ends: 2831 [2021-10-13 22:33:04,415 INFO L226 Difference]: Without dead ends: 2561 [2021-10-13 22:33:04,415 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 294.5ms TimeCoverageRelationStatistics Valid=262, Invalid=794, Unknown=0, NotChecked=0, Total=1056 [2021-10-13 22:33:04,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2561 states. [2021-10-13 22:33:04,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2561 to 1988. [2021-10-13 22:33:04,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1988 states, 1987 states have (on average 2.7443381982888777) internal successors, (5453), 1987 states have internal predecessors, (5453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:04,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1988 states to 1988 states and 5453 transitions. [2021-10-13 22:33:04,436 INFO L78 Accepts]: Start accepts. Automaton has 1988 states and 5453 transitions. Word has length 85 [2021-10-13 22:33:04,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:04,436 INFO L470 AbstractCegarLoop]: Abstraction has 1988 states and 5453 transitions. [2021-10-13 22:33:04,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:04,436 INFO L276 IsEmpty]: Start isEmpty. Operand 1988 states and 5453 transitions. [2021-10-13 22:33:04,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-10-13 22:33:04,437 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:04,438 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:33:04,457 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2021-10-13 22:33:04,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2021-10-13 22:33:04,638 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:04,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:04,638 INFO L82 PathProgramCache]: Analyzing trace with hash -535885989, now seen corresponding path program 52 times [2021-10-13 22:33:04,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:04,639 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163738584] [2021-10-13 22:33:04,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:04,639 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:04,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:04,778 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:04,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:04,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163738584] [2021-10-13 22:33:04,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163738584] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:04,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529980022] [2021-10-13 22:33:04,778 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:33:04,778 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:04,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:04,779 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:33:04,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2021-10-13 22:33:06,003 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:33:06,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:06,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 22:33:06,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:06,260 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:06,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529980022] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:06,261 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:06,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2021-10-13 22:33:06,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079755477] [2021-10-13 22:33:06,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 22:33:06,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:06,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 22:33:06,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2021-10-13 22:33:06,262 INFO L87 Difference]: Start difference. First operand 1988 states and 5453 transitions. Second operand has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 18 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:06,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:06,514 INFO L93 Difference]: Finished difference Result 3101 states and 7882 transitions. [2021-10-13 22:33:06,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 22:33:06,514 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 18 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-10-13 22:33:06,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:06,517 INFO L225 Difference]: With dead ends: 3101 [2021-10-13 22:33:06,517 INFO L226 Difference]: Without dead ends: 2831 [2021-10-13 22:33:06,517 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 252.0ms TimeCoverageRelationStatistics Valid=305, Invalid=955, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 22:33:06,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2831 states. [2021-10-13 22:33:06,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2831 to 2063. [2021-10-13 22:33:06,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2063 states, 2062 states have (on average 2.7536372453928224) internal successors, (5678), 2062 states have internal predecessors, (5678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:06,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2063 states to 2063 states and 5678 transitions. [2021-10-13 22:33:06,538 INFO L78 Accepts]: Start accepts. Automaton has 2063 states and 5678 transitions. Word has length 85 [2021-10-13 22:33:06,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:06,538 INFO L470 AbstractCegarLoop]: Abstraction has 2063 states and 5678 transitions. [2021-10-13 22:33:06,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 18 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:06,538 INFO L276 IsEmpty]: Start isEmpty. Operand 2063 states and 5678 transitions. [2021-10-13 22:33:06,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-10-13 22:33:06,540 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:06,540 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:33:06,560 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2021-10-13 22:33:06,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:06,741 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:06,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:06,741 INFO L82 PathProgramCache]: Analyzing trace with hash -606067991, now seen corresponding path program 53 times [2021-10-13 22:33:06,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:06,741 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431611665] [2021-10-13 22:33:06,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:06,741 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:06,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:06,874 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:06,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:06,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431611665] [2021-10-13 22:33:06,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431611665] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:06,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025744799] [2021-10-13 22:33:06,874 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:33:06,874 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:06,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:06,875 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:33:06,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2021-10-13 22:33:08,141 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-10-13 22:33:08,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:08,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 22:33:08,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:08,378 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:08,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025744799] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:08,378 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:08,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2021-10-13 22:33:08,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951425168] [2021-10-13 22:33:08,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 22:33:08,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:08,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 22:33:08,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-10-13 22:33:08,379 INFO L87 Difference]: Start difference. First operand 2063 states and 5678 transitions. Second operand has 17 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:08,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:08,605 INFO L93 Difference]: Finished difference Result 3131 states and 8017 transitions. [2021-10-13 22:33:08,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-13 22:33:08,605 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-10-13 22:33:08,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:08,608 INFO L225 Difference]: With dead ends: 3131 [2021-10-13 22:33:08,608 INFO L226 Difference]: Without dead ends: 2861 [2021-10-13 22:33:08,609 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 221.0ms TimeCoverageRelationStatistics Valid=311, Invalid=949, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 22:33:08,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2861 states. [2021-10-13 22:33:08,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2861 to 2138. [2021-10-13 22:33:08,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2138 states, 2137 states have (on average 2.762283575105288) internal successors, (5903), 2137 states have internal predecessors, (5903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:08,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2138 states to 2138 states and 5903 transitions. [2021-10-13 22:33:08,650 INFO L78 Accepts]: Start accepts. Automaton has 2138 states and 5903 transitions. Word has length 85 [2021-10-13 22:33:08,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:08,650 INFO L470 AbstractCegarLoop]: Abstraction has 2138 states and 5903 transitions. [2021-10-13 22:33:08,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:08,650 INFO L276 IsEmpty]: Start isEmpty. Operand 2138 states and 5903 transitions. [2021-10-13 22:33:08,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-10-13 22:33:08,652 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:08,652 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:33:08,674 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2021-10-13 22:33:08,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:08,859 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:08,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:08,860 INFO L82 PathProgramCache]: Analyzing trace with hash 267925465, now seen corresponding path program 54 times [2021-10-13 22:33:08,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:08,860 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482019678] [2021-10-13 22:33:08,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:08,860 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:08,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:08,981 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:08,981 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:08,981 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482019678] [2021-10-13 22:33:08,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482019678] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:08,981 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629489072] [2021-10-13 22:33:08,981 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:33:08,981 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:08,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:08,982 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:33:08,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2021-10-13 22:33:10,263 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-10-13 22:33:10,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:10,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 22:33:10,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:10,514 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:10,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629489072] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:10,514 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:10,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2021-10-13 22:33:10,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291600855] [2021-10-13 22:33:10,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 22:33:10,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:10,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 22:33:10,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2021-10-13 22:33:10,515 INFO L87 Difference]: Start difference. First operand 2138 states and 5903 transitions. Second operand has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 18 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:10,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:10,780 INFO L93 Difference]: Finished difference Result 3156 states and 8142 transitions. [2021-10-13 22:33:10,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-13 22:33:10,780 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 18 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-10-13 22:33:10,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:10,784 INFO L225 Difference]: With dead ends: 3156 [2021-10-13 22:33:10,784 INFO L226 Difference]: Without dead ends: 2886 [2021-10-13 22:33:10,784 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 266.4ms TimeCoverageRelationStatistics Valid=334, Invalid=1072, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 22:33:10,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2886 states. [2021-10-13 22:33:10,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2886 to 2213. [2021-10-13 22:33:10,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2213 states, 2212 states have (on average 2.7703435804701626) internal successors, (6128), 2212 states have internal predecessors, (6128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:10,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2213 states to 2213 states and 6128 transitions. [2021-10-13 22:33:10,841 INFO L78 Accepts]: Start accepts. Automaton has 2213 states and 6128 transitions. Word has length 85 [2021-10-13 22:33:10,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:10,841 INFO L470 AbstractCegarLoop]: Abstraction has 2213 states and 6128 transitions. [2021-10-13 22:33:10,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 18 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:10,842 INFO L276 IsEmpty]: Start isEmpty. Operand 2213 states and 6128 transitions. [2021-10-13 22:33:10,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-10-13 22:33:10,843 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:10,843 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:33:10,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2021-10-13 22:33:11,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:11,046 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:11,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:11,046 INFO L82 PathProgramCache]: Analyzing trace with hash 763219175, now seen corresponding path program 55 times [2021-10-13 22:33:11,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:11,046 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575146691] [2021-10-13 22:33:11,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:11,046 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:11,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:11,306 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:11,307 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:11,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575146691] [2021-10-13 22:33:11,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575146691] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:11,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120243161] [2021-10-13 22:33:11,307 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:33:11,307 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:11,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:11,308 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:33:11,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2021-10-13 22:33:12,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:12,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 22:33:12,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:12,909 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:12,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120243161] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:12,909 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:12,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2021-10-13 22:33:12,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19390853] [2021-10-13 22:33:12,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 22:33:12,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:12,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 22:33:12,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2021-10-13 22:33:12,910 INFO L87 Difference]: Start difference. First operand 2213 states and 6128 transitions. Second operand has 17 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:13,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:13,175 INFO L93 Difference]: Finished difference Result 3181 states and 8267 transitions. [2021-10-13 22:33:13,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-13 22:33:13,176 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-10-13 22:33:13,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:13,181 INFO L225 Difference]: With dead ends: 3181 [2021-10-13 22:33:13,181 INFO L226 Difference]: Without dead ends: 2911 [2021-10-13 22:33:13,181 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 347.5ms TimeCoverageRelationStatistics Valid=354, Invalid=1052, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 22:33:13,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2911 states. [2021-10-13 22:33:13,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2911 to 2288. [2021-10-13 22:33:13,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2288 states, 2287 states have (on average 2.7778749453432443) internal successors, (6353), 2287 states have internal predecessors, (6353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:13,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2288 states to 2288 states and 6353 transitions. [2021-10-13 22:33:13,206 INFO L78 Accepts]: Start accepts. Automaton has 2288 states and 6353 transitions. Word has length 85 [2021-10-13 22:33:13,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:13,207 INFO L470 AbstractCegarLoop]: Abstraction has 2288 states and 6353 transitions. [2021-10-13 22:33:13,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:13,207 INFO L276 IsEmpty]: Start isEmpty. Operand 2288 states and 6353 transitions. [2021-10-13 22:33:13,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-10-13 22:33:13,209 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:13,209 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:33:13,228 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2021-10-13 22:33:13,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2021-10-13 22:33:13,409 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:13,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:13,410 INFO L82 PathProgramCache]: Analyzing trace with hash -1781641769, now seen corresponding path program 56 times [2021-10-13 22:33:13,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:13,410 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091102524] [2021-10-13 22:33:13,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:13,410 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:13,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:13,526 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:13,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:13,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091102524] [2021-10-13 22:33:13,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091102524] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:13,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724820327] [2021-10-13 22:33:13,527 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:33:13,527 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:13,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:13,528 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:33:13,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2021-10-13 22:33:14,902 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:33:14,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:14,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 22:33:14,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:15,119 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:15,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724820327] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:15,120 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:15,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2021-10-13 22:33:15,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241282065] [2021-10-13 22:33:15,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 22:33:15,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:15,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 22:33:15,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2021-10-13 22:33:15,120 INFO L87 Difference]: Start difference. First operand 2288 states and 6353 transitions. Second operand has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 18 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:15,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:15,423 INFO L93 Difference]: Finished difference Result 3206 states and 8392 transitions. [2021-10-13 22:33:15,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-13 22:33:15,423 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 18 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-10-13 22:33:15,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:15,426 INFO L225 Difference]: With dead ends: 3206 [2021-10-13 22:33:15,426 INFO L226 Difference]: Without dead ends: 2936 [2021-10-13 22:33:15,426 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 281.1ms TimeCoverageRelationStatistics Valid=379, Invalid=1181, Unknown=0, NotChecked=0, Total=1560 [2021-10-13 22:33:15,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2936 states. [2021-10-13 22:33:15,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2936 to 2363. [2021-10-13 22:33:15,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2363 states, 2362 states have (on average 2.7849280270956815) internal successors, (6578), 2362 states have internal predecessors, (6578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:15,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2363 states to 2363 states and 6578 transitions. [2021-10-13 22:33:15,452 INFO L78 Accepts]: Start accepts. Automaton has 2363 states and 6578 transitions. Word has length 85 [2021-10-13 22:33:15,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:15,452 INFO L470 AbstractCegarLoop]: Abstraction has 2363 states and 6578 transitions. [2021-10-13 22:33:15,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 18 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:15,452 INFO L276 IsEmpty]: Start isEmpty. Operand 2363 states and 6578 transitions. [2021-10-13 22:33:15,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-10-13 22:33:15,454 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:15,454 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:33:15,474 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2021-10-13 22:33:15,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2021-10-13 22:33:15,655 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:15,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:15,655 INFO L82 PathProgramCache]: Analyzing trace with hash -871744411, now seen corresponding path program 57 times [2021-10-13 22:33:15,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:15,655 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118365080] [2021-10-13 22:33:15,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:15,655 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:15,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:15,767 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:15,768 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:15,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118365080] [2021-10-13 22:33:15,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118365080] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:15,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744548918] [2021-10-13 22:33:15,768 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:33:15,768 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:15,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:15,769 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:33:15,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2021-10-13 22:33:17,136 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-10-13 22:33:17,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:17,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 22:33:17,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:17,329 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:17,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744548918] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:17,329 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:17,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2021-10-13 22:33:17,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295030467] [2021-10-13 22:33:17,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 22:33:17,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:17,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 22:33:17,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-10-13 22:33:17,330 INFO L87 Difference]: Start difference. First operand 2363 states and 6578 transitions. Second operand has 17 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:17,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:17,599 INFO L93 Difference]: Finished difference Result 3231 states and 8517 transitions. [2021-10-13 22:33:17,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-13 22:33:17,600 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-10-13 22:33:17,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:17,603 INFO L225 Difference]: With dead ends: 3231 [2021-10-13 22:33:17,603 INFO L226 Difference]: Without dead ends: 2961 [2021-10-13 22:33:17,603 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 243.7ms TimeCoverageRelationStatistics Valid=413, Invalid=1147, Unknown=0, NotChecked=0, Total=1560 [2021-10-13 22:33:17,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2961 states. [2021-10-13 22:33:17,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2961 to 2438. [2021-10-13 22:33:17,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2438 states, 2437 states have (on average 2.7915469839967173) internal successors, (6803), 2437 states have internal predecessors, (6803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:17,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2438 states to 2438 states and 6803 transitions. [2021-10-13 22:33:17,631 INFO L78 Accepts]: Start accepts. Automaton has 2438 states and 6803 transitions. Word has length 85 [2021-10-13 22:33:17,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:17,631 INFO L470 AbstractCegarLoop]: Abstraction has 2438 states and 6803 transitions. [2021-10-13 22:33:17,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:17,631 INFO L276 IsEmpty]: Start isEmpty. Operand 2438 states and 6803 transitions. [2021-10-13 22:33:17,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-10-13 22:33:17,633 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:17,633 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:33:17,656 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2021-10-13 22:33:17,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:17,833 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:17,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:17,834 INFO L82 PathProgramCache]: Analyzing trace with hash -739628715, now seen corresponding path program 58 times [2021-10-13 22:33:17,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:17,834 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473786861] [2021-10-13 22:33:17,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:17,834 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:17,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:17,996 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:17,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:17,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473786861] [2021-10-13 22:33:17,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473786861] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:17,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147633390] [2021-10-13 22:33:17,997 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:33:17,997 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:17,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:18,002 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:33:18,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2021-10-13 22:33:19,406 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:33:19,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:19,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 22:33:19,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:19,638 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:19,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147633390] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:19,638 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:19,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2021-10-13 22:33:19,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387667596] [2021-10-13 22:33:19,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 22:33:19,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:19,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 22:33:19,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2021-10-13 22:33:19,639 INFO L87 Difference]: Start difference. First operand 2438 states and 6803 transitions. Second operand has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 18 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:20,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:20,012 INFO L93 Difference]: Finished difference Result 3316 states and 8807 transitions. [2021-10-13 22:33:20,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-13 22:33:20,012 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 18 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-10-13 22:33:20,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:20,016 INFO L225 Difference]: With dead ends: 3316 [2021-10-13 22:33:20,016 INFO L226 Difference]: Without dead ends: 3046 [2021-10-13 22:33:20,016 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 335.1ms TimeCoverageRelationStatistics Valid=440, Invalid=1282, Unknown=0, NotChecked=0, Total=1722 [2021-10-13 22:33:20,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3046 states. [2021-10-13 22:33:20,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3046 to 2513. [2021-10-13 22:33:20,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2513 states, 2512 states have (on average 2.805732484076433) internal successors, (7048), 2512 states have internal predecessors, (7048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:20,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2513 states to 2513 states and 7048 transitions. [2021-10-13 22:33:20,048 INFO L78 Accepts]: Start accepts. Automaton has 2513 states and 7048 transitions. Word has length 85 [2021-10-13 22:33:20,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:20,049 INFO L470 AbstractCegarLoop]: Abstraction has 2513 states and 7048 transitions. [2021-10-13 22:33:20,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 18 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:20,049 INFO L276 IsEmpty]: Start isEmpty. Operand 2513 states and 7048 transitions. [2021-10-13 22:33:20,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-10-13 22:33:20,051 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:20,051 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:33:20,071 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2021-10-13 22:33:20,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:20,255 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:20,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:20,256 INFO L82 PathProgramCache]: Analyzing trace with hash -1196011165, now seen corresponding path program 59 times [2021-10-13 22:33:20,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:20,256 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376148106] [2021-10-13 22:33:20,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:20,256 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:20,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:20,357 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:20,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:20,357 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376148106] [2021-10-13 22:33:20,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376148106] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:20,357 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910853625] [2021-10-13 22:33:20,357 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:33:20,357 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:20,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:20,358 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:33:20,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2021-10-13 22:33:21,797 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-10-13 22:33:21,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:21,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 22:33:21,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:21,974 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:21,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910853625] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:21,974 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:21,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2021-10-13 22:33:21,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524950764] [2021-10-13 22:33:21,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 22:33:21,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:21,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 22:33:21,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2021-10-13 22:33:21,975 INFO L87 Difference]: Start difference. First operand 2513 states and 7048 transitions. Second operand has 17 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:22,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:22,251 INFO L93 Difference]: Finished difference Result 4058 states and 10931 transitions. [2021-10-13 22:33:22,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-13 22:33:22,252 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-10-13 22:33:22,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:22,256 INFO L225 Difference]: With dead ends: 4058 [2021-10-13 22:33:22,256 INFO L226 Difference]: Without dead ends: 3788 [2021-10-13 22:33:22,257 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 246.3ms TimeCoverageRelationStatistics Valid=489, Invalid=1233, Unknown=0, NotChecked=0, Total=1722 [2021-10-13 22:33:22,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3788 states. [2021-10-13 22:33:22,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3788 to 2693. [2021-10-13 22:33:22,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2693 states, 2692 states have (on average 2.8257800891530462) internal successors, (7607), 2692 states have internal predecessors, (7607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:22,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2693 states to 2693 states and 7607 transitions. [2021-10-13 22:33:22,286 INFO L78 Accepts]: Start accepts. Automaton has 2693 states and 7607 transitions. Word has length 85 [2021-10-13 22:33:22,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:22,286 INFO L470 AbstractCegarLoop]: Abstraction has 2693 states and 7607 transitions. [2021-10-13 22:33:22,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:22,286 INFO L276 IsEmpty]: Start isEmpty. Operand 2693 states and 7607 transitions. [2021-10-13 22:33:22,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-10-13 22:33:22,288 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:22,288 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:33:22,310 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2021-10-13 22:33:22,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2021-10-13 22:33:22,489 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:22,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:22,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1130768875, now seen corresponding path program 60 times [2021-10-13 22:33:22,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:22,489 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246579028] [2021-10-13 22:33:22,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:22,489 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:22,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:22,593 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:22,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:22,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246579028] [2021-10-13 22:33:22,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246579028] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:22,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141360333] [2021-10-13 22:33:22,593 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:33:22,593 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:22,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:22,594 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:33:22,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2021-10-13 22:33:24,060 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-10-13 22:33:24,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:24,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 22:33:24,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:24,249 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:24,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141360333] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:24,250 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:24,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2021-10-13 22:33:24,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43800331] [2021-10-13 22:33:24,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 22:33:24,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:24,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 22:33:24,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2021-10-13 22:33:24,250 INFO L87 Difference]: Start difference. First operand 2693 states and 7607 transitions. Second operand has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:24,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:24,644 INFO L93 Difference]: Finished difference Result 3926 states and 10596 transitions. [2021-10-13 22:33:24,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-13 22:33:24,644 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-10-13 22:33:24,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:24,648 INFO L225 Difference]: With dead ends: 3926 [2021-10-13 22:33:24,648 INFO L226 Difference]: Without dead ends: 3351 [2021-10-13 22:33:24,649 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 544 ImplicationChecksByTransitivity, 359.1ms TimeCoverageRelationStatistics Valid=554, Invalid=1608, Unknown=0, NotChecked=0, Total=2162 [2021-10-13 22:33:24,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3351 states. [2021-10-13 22:33:24,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3351 to 2728. [2021-10-13 22:33:24,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2728 states, 2727 states have (on average 2.8173817381738173) internal successors, (7683), 2727 states have internal predecessors, (7683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:24,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2728 states to 2728 states and 7683 transitions. [2021-10-13 22:33:24,688 INFO L78 Accepts]: Start accepts. Automaton has 2728 states and 7683 transitions. Word has length 85 [2021-10-13 22:33:24,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:24,688 INFO L470 AbstractCegarLoop]: Abstraction has 2728 states and 7683 transitions. [2021-10-13 22:33:24,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:24,688 INFO L276 IsEmpty]: Start isEmpty. Operand 2728 states and 7683 transitions. [2021-10-13 22:33:24,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-10-13 22:33:24,691 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:24,691 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:33:24,711 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2021-10-13 22:33:24,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2021-10-13 22:33:24,891 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:24,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:24,892 INFO L82 PathProgramCache]: Analyzing trace with hash 2127813953, now seen corresponding path program 61 times [2021-10-13 22:33:24,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:24,892 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305085744] [2021-10-13 22:33:24,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:24,892 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:24,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:25,033 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:25,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:25,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305085744] [2021-10-13 22:33:25,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305085744] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:25,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669287875] [2021-10-13 22:33:25,034 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:33:25,034 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:25,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:25,035 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:33:25,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2021-10-13 22:33:26,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:26,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 22:33:26,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:26,882 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:26,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669287875] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:26,882 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:26,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 20 [2021-10-13 22:33:26,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147449083] [2021-10-13 22:33:26,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 22:33:26,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:26,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 22:33:26,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2021-10-13 22:33:26,883 INFO L87 Difference]: Start difference. First operand 2728 states and 7683 transitions. Second operand has 20 states, 20 states have (on average 5.9) internal successors, (118), 20 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:27,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:27,127 INFO L93 Difference]: Finished difference Result 3668 states and 9883 transitions. [2021-10-13 22:33:27,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 22:33:27,127 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.9) internal successors, (118), 20 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-10-13 22:33:27,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:27,132 INFO L225 Difference]: With dead ends: 3668 [2021-10-13 22:33:27,132 INFO L226 Difference]: Without dead ends: 3334 [2021-10-13 22:33:27,132 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 242.4ms TimeCoverageRelationStatistics Valid=360, Invalid=1046, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 22:33:27,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3334 states. [2021-10-13 22:33:27,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3334 to 2813. [2021-10-13 22:33:27,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2813 states, 2812 states have (on average 2.792674253200569) internal successors, (7853), 2812 states have internal predecessors, (7853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:27,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2813 states to 2813 states and 7853 transitions. [2021-10-13 22:33:27,165 INFO L78 Accepts]: Start accepts. Automaton has 2813 states and 7853 transitions. Word has length 90 [2021-10-13 22:33:27,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:27,166 INFO L470 AbstractCegarLoop]: Abstraction has 2813 states and 7853 transitions. [2021-10-13 22:33:27,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.9) internal successors, (118), 20 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:27,166 INFO L276 IsEmpty]: Start isEmpty. Operand 2813 states and 7853 transitions. [2021-10-13 22:33:27,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-10-13 22:33:27,168 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:27,168 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:33:27,188 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2021-10-13 22:33:27,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:27,369 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:27,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:27,369 INFO L82 PathProgramCache]: Analyzing trace with hash -946910843, now seen corresponding path program 62 times [2021-10-13 22:33:27,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:27,369 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455872004] [2021-10-13 22:33:27,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:27,369 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:27,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:27,521 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:27,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:27,522 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455872004] [2021-10-13 22:33:27,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455872004] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:27,522 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629476297] [2021-10-13 22:33:27,522 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:33:27,522 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:27,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:27,523 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:33:27,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2021-10-13 22:33:29,027 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:33:29,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:29,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 22:33:29,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:29,394 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:29,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629476297] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:29,395 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:29,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2021-10-13 22:33:29,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346196164] [2021-10-13 22:33:29,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 22:33:29,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:29,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 22:33:29,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2021-10-13 22:33:29,396 INFO L87 Difference]: Start difference. First operand 2813 states and 7853 transitions. Second operand has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:29,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:29,583 INFO L93 Difference]: Finished difference Result 4061 states and 10477 transitions. [2021-10-13 22:33:29,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 22:33:29,583 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-10-13 22:33:29,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:29,588 INFO L225 Difference]: With dead ends: 4061 [2021-10-13 22:33:29,588 INFO L226 Difference]: Without dead ends: 3791 [2021-10-13 22:33:29,588 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 188.8ms TimeCoverageRelationStatistics Valid=260, Invalid=732, Unknown=0, NotChecked=0, Total=992 [2021-10-13 22:33:29,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3791 states. [2021-10-13 22:33:29,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3791 to 2828. [2021-10-13 22:33:29,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2828 states, 2827 states have (on average 2.788468340997524) internal successors, (7883), 2827 states have internal predecessors, (7883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:29,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2828 states to 2828 states and 7883 transitions. [2021-10-13 22:33:29,623 INFO L78 Accepts]: Start accepts. Automaton has 2828 states and 7883 transitions. Word has length 90 [2021-10-13 22:33:29,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:29,624 INFO L470 AbstractCegarLoop]: Abstraction has 2828 states and 7883 transitions. [2021-10-13 22:33:29,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:29,624 INFO L276 IsEmpty]: Start isEmpty. Operand 2828 states and 7883 transitions. [2021-10-13 22:33:29,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-10-13 22:33:29,626 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:29,626 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:33:29,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2021-10-13 22:33:29,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable70 [2021-10-13 22:33:29,839 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:29,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:29,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1036286347, now seen corresponding path program 63 times [2021-10-13 22:33:29,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:29,840 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590862735] [2021-10-13 22:33:29,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:29,840 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:29,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:29,979 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:29,979 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:29,980 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590862735] [2021-10-13 22:33:29,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590862735] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:29,980 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847469954] [2021-10-13 22:33:29,980 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:33:29,980 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:29,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:29,981 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:33:30,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2021-10-13 22:33:31,569 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-10-13 22:33:31,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:31,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 22:33:31,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:31,846 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:31,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847469954] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:31,846 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:31,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2021-10-13 22:33:31,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044216701] [2021-10-13 22:33:31,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 22:33:31,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:31,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 22:33:31,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2021-10-13 22:33:31,847 INFO L87 Difference]: Start difference. First operand 2828 states and 7883 transitions. Second operand has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:32,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:32,097 INFO L93 Difference]: Finished difference Result 3946 states and 10247 transitions. [2021-10-13 22:33:32,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 22:33:32,097 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-10-13 22:33:32,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:32,102 INFO L225 Difference]: With dead ends: 3946 [2021-10-13 22:33:32,102 INFO L226 Difference]: Without dead ends: 3676 [2021-10-13 22:33:32,102 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 248.2ms TimeCoverageRelationStatistics Valid=311, Invalid=949, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 22:33:32,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3676 states. [2021-10-13 22:33:32,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3676 to 2828. [2021-10-13 22:33:32,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2828 states, 2827 states have (on average 2.788468340997524) internal successors, (7883), 2827 states have internal predecessors, (7883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:32,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2828 states to 2828 states and 7883 transitions. [2021-10-13 22:33:32,135 INFO L78 Accepts]: Start accepts. Automaton has 2828 states and 7883 transitions. Word has length 90 [2021-10-13 22:33:32,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:32,135 INFO L470 AbstractCegarLoop]: Abstraction has 2828 states and 7883 transitions. [2021-10-13 22:33:32,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:32,135 INFO L276 IsEmpty]: Start isEmpty. Operand 2828 states and 7883 transitions. [2021-10-13 22:33:32,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-10-13 22:33:32,138 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:32,138 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:33:32,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2021-10-13 22:33:32,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:32,344 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:32,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:32,344 INFO L82 PathProgramCache]: Analyzing trace with hash -1568536445, now seen corresponding path program 64 times [2021-10-13 22:33:32,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:32,344 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314576655] [2021-10-13 22:33:32,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:32,344 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:32,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:32,495 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:32,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:32,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314576655] [2021-10-13 22:33:32,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314576655] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:32,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354346673] [2021-10-13 22:33:32,495 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:33:32,495 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:32,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:32,496 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:33:32,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2021-10-13 22:33:34,067 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:33:34,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:34,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 22:33:34,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:34,324 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:34,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354346673] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:34,325 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:34,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2021-10-13 22:33:34,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441897011] [2021-10-13 22:33:34,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 22:33:34,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:34,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 22:33:34,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2021-10-13 22:33:34,325 INFO L87 Difference]: Start difference. First operand 2828 states and 7883 transitions. Second operand has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:34,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:34,524 INFO L93 Difference]: Finished difference Result 3921 states and 10197 transitions. [2021-10-13 22:33:34,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-13 22:33:34,524 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-10-13 22:33:34,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:34,528 INFO L225 Difference]: With dead ends: 3921 [2021-10-13 22:33:34,528 INFO L226 Difference]: Without dead ends: 3651 [2021-10-13 22:33:34,529 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 197.3ms TimeCoverageRelationStatistics Valid=273, Invalid=849, Unknown=0, NotChecked=0, Total=1122 [2021-10-13 22:33:34,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3651 states. [2021-10-13 22:33:34,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3651 to 2828. [2021-10-13 22:33:34,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2828 states, 2827 states have (on average 2.788468340997524) internal successors, (7883), 2827 states have internal predecessors, (7883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:34,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2828 states to 2828 states and 7883 transitions. [2021-10-13 22:33:34,575 INFO L78 Accepts]: Start accepts. Automaton has 2828 states and 7883 transitions. Word has length 90 [2021-10-13 22:33:34,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:34,575 INFO L470 AbstractCegarLoop]: Abstraction has 2828 states and 7883 transitions. [2021-10-13 22:33:34,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:34,575 INFO L276 IsEmpty]: Start isEmpty. Operand 2828 states and 7883 transitions. [2021-10-13 22:33:34,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-10-13 22:33:34,577 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:34,577 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:33:34,598 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2021-10-13 22:33:34,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:34,778 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:34,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:34,778 INFO L82 PathProgramCache]: Analyzing trace with hash 217624947, now seen corresponding path program 65 times [2021-10-13 22:33:34,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:34,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077345506] [2021-10-13 22:33:34,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:34,779 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:34,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:34,906 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:34,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:34,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077345506] [2021-10-13 22:33:34,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077345506] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:34,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702127718] [2021-10-13 22:33:34,906 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:33:34,906 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:34,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:34,907 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:33:34,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2021-10-13 22:33:36,528 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-10-13 22:33:36,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:36,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 22:33:36,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:36,822 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:36,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702127718] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:36,822 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:36,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2021-10-13 22:33:36,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698689738] [2021-10-13 22:33:36,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 22:33:36,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:36,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 22:33:36,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2021-10-13 22:33:36,823 INFO L87 Difference]: Start difference. First operand 2828 states and 7883 transitions. Second operand has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:37,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:37,102 INFO L93 Difference]: Finished difference Result 3871 states and 10097 transitions. [2021-10-13 22:33:37,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-13 22:33:37,103 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-10-13 22:33:37,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:37,107 INFO L225 Difference]: With dead ends: 3871 [2021-10-13 22:33:37,107 INFO L226 Difference]: Without dead ends: 3601 [2021-10-13 22:33:37,108 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 266.7ms TimeCoverageRelationStatistics Valid=332, Invalid=1074, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 22:33:37,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3601 states. [2021-10-13 22:33:37,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3601 to 2828. [2021-10-13 22:33:37,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2828 states, 2827 states have (on average 2.788468340997524) internal successors, (7883), 2827 states have internal predecessors, (7883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:37,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2828 states to 2828 states and 7883 transitions. [2021-10-13 22:33:37,142 INFO L78 Accepts]: Start accepts. Automaton has 2828 states and 7883 transitions. Word has length 90 [2021-10-13 22:33:37,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:37,142 INFO L470 AbstractCegarLoop]: Abstraction has 2828 states and 7883 transitions. [2021-10-13 22:33:37,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:37,142 INFO L276 IsEmpty]: Start isEmpty. Operand 2828 states and 7883 transitions. [2021-10-13 22:33:37,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-10-13 22:33:37,144 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:37,145 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:33:37,166 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2021-10-13 22:33:37,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable73 [2021-10-13 22:33:37,351 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:37,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:37,352 INFO L82 PathProgramCache]: Analyzing trace with hash 147442945, now seen corresponding path program 66 times [2021-10-13 22:33:37,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:37,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578013643] [2021-10-13 22:33:37,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:37,352 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:37,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:37,491 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:37,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:37,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578013643] [2021-10-13 22:33:37,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578013643] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:37,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469845268] [2021-10-13 22:33:37,492 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:33:37,492 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:37,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:37,492 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:33:37,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2021-10-13 22:33:39,171 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-10-13 22:33:39,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:39,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 22:33:39,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:39,410 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:39,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469845268] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:39,410 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:39,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2021-10-13 22:33:39,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443629875] [2021-10-13 22:33:39,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 22:33:39,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:39,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 22:33:39,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2021-10-13 22:33:39,411 INFO L87 Difference]: Start difference. First operand 2828 states and 7883 transitions. Second operand has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:39,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:39,638 INFO L93 Difference]: Finished difference Result 3821 states and 9997 transitions. [2021-10-13 22:33:39,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-13 22:33:39,638 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-10-13 22:33:39,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:39,643 INFO L225 Difference]: With dead ends: 3821 [2021-10-13 22:33:39,643 INFO L226 Difference]: Without dead ends: 3551 [2021-10-13 22:33:39,643 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 227.0ms TimeCoverageRelationStatistics Valid=302, Invalid=958, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 22:33:39,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3551 states. [2021-10-13 22:33:39,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3551 to 2828. [2021-10-13 22:33:39,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2828 states, 2827 states have (on average 2.788468340997524) internal successors, (7883), 2827 states have internal predecessors, (7883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:39,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2828 states to 2828 states and 7883 transitions. [2021-10-13 22:33:39,671 INFO L78 Accepts]: Start accepts. Automaton has 2828 states and 7883 transitions. Word has length 90 [2021-10-13 22:33:39,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:39,671 INFO L470 AbstractCegarLoop]: Abstraction has 2828 states and 7883 transitions. [2021-10-13 22:33:39,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:39,671 INFO L276 IsEmpty]: Start isEmpty. Operand 2828 states and 7883 transitions. [2021-10-13 22:33:39,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-10-13 22:33:39,674 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:39,674 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:33:39,701 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2021-10-13 22:33:39,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:39,895 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:39,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:39,895 INFO L82 PathProgramCache]: Analyzing trace with hash 1021436401, now seen corresponding path program 67 times [2021-10-13 22:33:39,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:39,896 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052520196] [2021-10-13 22:33:39,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:39,896 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:39,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:40,015 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:40,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:40,016 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052520196] [2021-10-13 22:33:40,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052520196] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:40,016 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416457655] [2021-10-13 22:33:40,016 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:33:40,016 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:40,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:40,017 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:33:40,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2021-10-13 22:33:41,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:41,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 22:33:41,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:41,959 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:41,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416457655] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:41,960 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:41,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2021-10-13 22:33:41,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137166461] [2021-10-13 22:33:41,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 22:33:41,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:41,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 22:33:41,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2021-10-13 22:33:41,961 INFO L87 Difference]: Start difference. First operand 2828 states and 7883 transitions. Second operand has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:42,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:42,277 INFO L93 Difference]: Finished difference Result 3771 states and 9897 transitions. [2021-10-13 22:33:42,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-13 22:33:42,277 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-10-13 22:33:42,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:42,281 INFO L225 Difference]: With dead ends: 3771 [2021-10-13 22:33:42,282 INFO L226 Difference]: Without dead ends: 3501 [2021-10-13 22:33:42,282 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 289.5ms TimeCoverageRelationStatistics Valid=369, Invalid=1191, Unknown=0, NotChecked=0, Total=1560 [2021-10-13 22:33:42,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3501 states. [2021-10-13 22:33:42,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3501 to 2828. [2021-10-13 22:33:42,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2828 states, 2827 states have (on average 2.788468340997524) internal successors, (7883), 2827 states have internal predecessors, (7883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:42,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2828 states to 2828 states and 7883 transitions. [2021-10-13 22:33:42,309 INFO L78 Accepts]: Start accepts. Automaton has 2828 states and 7883 transitions. Word has length 90 [2021-10-13 22:33:42,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:42,310 INFO L470 AbstractCegarLoop]: Abstraction has 2828 states and 7883 transitions. [2021-10-13 22:33:42,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:42,310 INFO L276 IsEmpty]: Start isEmpty. Operand 2828 states and 7883 transitions. [2021-10-13 22:33:42,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-10-13 22:33:42,312 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:42,312 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:33:42,333 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2021-10-13 22:33:42,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:42,512 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:42,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:42,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1516730111, now seen corresponding path program 68 times [2021-10-13 22:33:42,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:42,513 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824705417] [2021-10-13 22:33:42,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:42,513 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:42,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:42,647 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:42,647 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:42,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824705417] [2021-10-13 22:33:42,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824705417] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:42,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453554013] [2021-10-13 22:33:42,647 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:33:42,647 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:42,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:42,648 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:33:42,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2021-10-13 22:33:44,364 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:33:44,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:44,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 22:33:44,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:44,596 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:44,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453554013] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:44,596 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:44,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2021-10-13 22:33:44,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85620552] [2021-10-13 22:33:44,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 22:33:44,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:44,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 22:33:44,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2021-10-13 22:33:44,597 INFO L87 Difference]: Start difference. First operand 2828 states and 7883 transitions. Second operand has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:44,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:44,904 INFO L93 Difference]: Finished difference Result 3721 states and 9797 transitions. [2021-10-13 22:33:44,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-13 22:33:44,905 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-10-13 22:33:44,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:44,909 INFO L225 Difference]: With dead ends: 3721 [2021-10-13 22:33:44,909 INFO L226 Difference]: Without dead ends: 3451 [2021-10-13 22:33:44,909 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 269.9ms TimeCoverageRelationStatistics Valid=347, Invalid=1059, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 22:33:44,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3451 states. [2021-10-13 22:33:44,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3451 to 2828. [2021-10-13 22:33:44,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2828 states, 2827 states have (on average 2.788468340997524) internal successors, (7883), 2827 states have internal predecessors, (7883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:44,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2828 states to 2828 states and 7883 transitions. [2021-10-13 22:33:44,937 INFO L78 Accepts]: Start accepts. Automaton has 2828 states and 7883 transitions. Word has length 90 [2021-10-13 22:33:44,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:44,937 INFO L470 AbstractCegarLoop]: Abstraction has 2828 states and 7883 transitions. [2021-10-13 22:33:44,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:44,937 INFO L276 IsEmpty]: Start isEmpty. Operand 2828 states and 7883 transitions. [2021-10-13 22:33:44,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-10-13 22:33:44,939 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:44,940 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:33:44,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2021-10-13 22:33:45,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:45,140 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:45,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:45,140 INFO L82 PathProgramCache]: Analyzing trace with hash -1028130833, now seen corresponding path program 69 times [2021-10-13 22:33:45,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:45,141 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240787907] [2021-10-13 22:33:45,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:45,141 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:45,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:45,264 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:45,264 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:45,264 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240787907] [2021-10-13 22:33:45,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240787907] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:45,264 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935635449] [2021-10-13 22:33:45,264 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:33:45,265 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:45,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:45,265 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:33:45,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2021-10-13 22:33:47,072 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-10-13 22:33:47,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:47,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 22:33:47,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:47,299 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:47,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935635449] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:47,299 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:47,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2021-10-13 22:33:47,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950979485] [2021-10-13 22:33:47,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 22:33:47,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:47,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 22:33:47,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2021-10-13 22:33:47,300 INFO L87 Difference]: Start difference. First operand 2828 states and 7883 transitions. Second operand has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:47,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:47,655 INFO L93 Difference]: Finished difference Result 3671 states and 9697 transitions. [2021-10-13 22:33:47,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-13 22:33:47,655 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-10-13 22:33:47,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:47,659 INFO L225 Difference]: With dead ends: 3671 [2021-10-13 22:33:47,660 INFO L226 Difference]: Without dead ends: 3401 [2021-10-13 22:33:47,660 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 326.4ms TimeCoverageRelationStatistics Valid=422, Invalid=1300, Unknown=0, NotChecked=0, Total=1722 [2021-10-13 22:33:47,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3401 states. [2021-10-13 22:33:47,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3401 to 2828. [2021-10-13 22:33:47,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2828 states, 2827 states have (on average 2.788468340997524) internal successors, (7883), 2827 states have internal predecessors, (7883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:47,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2828 states to 2828 states and 7883 transitions. [2021-10-13 22:33:47,693 INFO L78 Accepts]: Start accepts. Automaton has 2828 states and 7883 transitions. Word has length 90 [2021-10-13 22:33:47,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:47,693 INFO L470 AbstractCegarLoop]: Abstraction has 2828 states and 7883 transitions. [2021-10-13 22:33:47,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:47,693 INFO L276 IsEmpty]: Start isEmpty. Operand 2828 states and 7883 transitions. [2021-10-13 22:33:47,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-10-13 22:33:47,696 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:47,696 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:33:47,717 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2021-10-13 22:33:47,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2021-10-13 22:33:47,896 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:47,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:47,897 INFO L82 PathProgramCache]: Analyzing trace with hash -118233475, now seen corresponding path program 70 times [2021-10-13 22:33:47,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:47,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939492092] [2021-10-13 22:33:47,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:47,897 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:47,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:48,002 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:48,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:48,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939492092] [2021-10-13 22:33:48,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939492092] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:48,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601146245] [2021-10-13 22:33:48,003 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:33:48,003 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:48,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:48,004 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:33:48,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2021-10-13 22:33:49,799 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:33:49,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:49,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 22:33:49,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:49,992 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:49,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601146245] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:49,993 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:49,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2021-10-13 22:33:49,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916720313] [2021-10-13 22:33:49,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 22:33:49,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:49,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 22:33:49,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2021-10-13 22:33:49,994 INFO L87 Difference]: Start difference. First operand 2828 states and 7883 transitions. Second operand has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:50,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:50,271 INFO L93 Difference]: Finished difference Result 3621 states and 9597 transitions. [2021-10-13 22:33:50,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-13 22:33:50,271 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-10-13 22:33:50,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:50,275 INFO L225 Difference]: With dead ends: 3621 [2021-10-13 22:33:50,275 INFO L226 Difference]: Without dead ends: 3351 [2021-10-13 22:33:50,275 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 243.7ms TimeCoverageRelationStatistics Valid=408, Invalid=1152, Unknown=0, NotChecked=0, Total=1560 [2021-10-13 22:33:50,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3351 states. [2021-10-13 22:33:50,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3351 to 2828. [2021-10-13 22:33:50,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2828 states, 2827 states have (on average 2.788468340997524) internal successors, (7883), 2827 states have internal predecessors, (7883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:50,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2828 states to 2828 states and 7883 transitions. [2021-10-13 22:33:50,302 INFO L78 Accepts]: Start accepts. Automaton has 2828 states and 7883 transitions. Word has length 90 [2021-10-13 22:33:50,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:50,302 INFO L470 AbstractCegarLoop]: Abstraction has 2828 states and 7883 transitions. [2021-10-13 22:33:50,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:50,302 INFO L276 IsEmpty]: Start isEmpty. Operand 2828 states and 7883 transitions. [2021-10-13 22:33:50,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-10-13 22:33:50,305 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:50,305 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:33:50,326 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2021-10-13 22:33:50,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:50,505 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:50,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:50,505 INFO L82 PathProgramCache]: Analyzing trace with hash 13882221, now seen corresponding path program 71 times [2021-10-13 22:33:50,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:50,506 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155924823] [2021-10-13 22:33:50,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:50,506 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:50,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:50,619 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:50,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:50,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155924823] [2021-10-13 22:33:50,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155924823] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:50,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380655178] [2021-10-13 22:33:50,619 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:33:50,619 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:50,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:50,620 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:33:50,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2021-10-13 22:33:52,484 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-10-13 22:33:52,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:52,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 22:33:52,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:52,733 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:52,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1380655178] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:52,733 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:52,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2021-10-13 22:33:52,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300325521] [2021-10-13 22:33:52,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 22:33:52,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:52,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 22:33:52,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2021-10-13 22:33:52,734 INFO L87 Difference]: Start difference. First operand 2828 states and 7883 transitions. Second operand has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:53,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:53,109 INFO L93 Difference]: Finished difference Result 3631 states and 9647 transitions. [2021-10-13 22:33:53,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-13 22:33:53,109 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-10-13 22:33:53,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:53,123 INFO L225 Difference]: With dead ends: 3631 [2021-10-13 22:33:53,123 INFO L226 Difference]: Without dead ends: 3361 [2021-10-13 22:33:53,124 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 341.2ms TimeCoverageRelationStatistics Valid=491, Invalid=1401, Unknown=0, NotChecked=0, Total=1892 [2021-10-13 22:33:53,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3361 states. [2021-10-13 22:33:53,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3361 to 2828. [2021-10-13 22:33:53,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2828 states, 2827 states have (on average 2.790237000353732) internal successors, (7888), 2827 states have internal predecessors, (7888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:53,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2828 states to 2828 states and 7888 transitions. [2021-10-13 22:33:53,153 INFO L78 Accepts]: Start accepts. Automaton has 2828 states and 7888 transitions. Word has length 90 [2021-10-13 22:33:53,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:53,153 INFO L470 AbstractCegarLoop]: Abstraction has 2828 states and 7888 transitions. [2021-10-13 22:33:53,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:53,153 INFO L276 IsEmpty]: Start isEmpty. Operand 2828 states and 7888 transitions. [2021-10-13 22:33:53,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-10-13 22:33:53,156 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:53,156 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:33:53,177 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2021-10-13 22:33:53,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:53,356 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:53,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:53,356 INFO L82 PathProgramCache]: Analyzing trace with hash -442500229, now seen corresponding path program 72 times [2021-10-13 22:33:53,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:53,357 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871800212] [2021-10-13 22:33:53,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:53,357 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:53,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:53,460 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:53,461 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:53,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871800212] [2021-10-13 22:33:53,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871800212] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:53,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433725666] [2021-10-13 22:33:53,461 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:33:53,461 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:53,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:53,462 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:33:53,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2021-10-13 22:33:55,293 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-10-13 22:33:55,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:55,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 22:33:55,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:55,496 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:55,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [433725666] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:55,496 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:55,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2021-10-13 22:33:55,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29684001] [2021-10-13 22:33:55,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 22:33:55,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:55,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 22:33:55,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2021-10-13 22:33:55,497 INFO L87 Difference]: Start difference. First operand 2828 states and 7888 transitions. Second operand has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:55,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:55,841 INFO L93 Difference]: Finished difference Result 4398 states and 11821 transitions. [2021-10-13 22:33:55,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-13 22:33:55,842 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-10-13 22:33:55,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:55,847 INFO L225 Difference]: With dead ends: 4398 [2021-10-13 22:33:55,847 INFO L226 Difference]: Without dead ends: 4128 [2021-10-13 22:33:55,847 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 305.3ms TimeCoverageRelationStatistics Valid=486, Invalid=1236, Unknown=0, NotChecked=0, Total=1722 [2021-10-13 22:33:55,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4128 states. [2021-10-13 22:33:55,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4128 to 3008. [2021-10-13 22:33:55,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3008 states, 3007 states have (on average 2.809112071832391) internal successors, (8447), 3007 states have internal predecessors, (8447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:55,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3008 states to 3008 states and 8447 transitions. [2021-10-13 22:33:55,882 INFO L78 Accepts]: Start accepts. Automaton has 3008 states and 8447 transitions. Word has length 90 [2021-10-13 22:33:55,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:55,882 INFO L470 AbstractCegarLoop]: Abstraction has 3008 states and 8447 transitions. [2021-10-13 22:33:55,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:55,882 INFO L276 IsEmpty]: Start isEmpty. Operand 3008 states and 8447 transitions. [2021-10-13 22:33:55,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-10-13 22:33:55,884 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:55,884 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:33:55,908 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2021-10-13 22:33:56,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable80 [2021-10-13 22:33:56,085 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:56,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:56,085 INFO L82 PathProgramCache]: Analyzing trace with hash -377257939, now seen corresponding path program 73 times [2021-10-13 22:33:56,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:56,085 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450213541] [2021-10-13 22:33:56,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:56,085 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:56,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:56,187 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:56,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:56,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450213541] [2021-10-13 22:33:56,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450213541] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:56,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530521987] [2021-10-13 22:33:56,188 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:33:56,188 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:56,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:56,188 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:33:56,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2021-10-13 22:33:58,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:58,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 22:33:58,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:58,256 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:58,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530521987] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:58,257 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:58,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2021-10-13 22:33:58,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403330130] [2021-10-13 22:33:58,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 22:33:58,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:58,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 22:33:58,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2021-10-13 22:33:58,257 INFO L87 Difference]: Start difference. First operand 3008 states and 8447 transitions. Second operand has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:58,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:58,691 INFO L93 Difference]: Finished difference Result 3885 states and 10521 transitions. [2021-10-13 22:33:58,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-13 22:33:58,691 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-10-13 22:33:58,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:58,695 INFO L225 Difference]: With dead ends: 3885 [2021-10-13 22:33:58,695 INFO L226 Difference]: Without dead ends: 3306 [2021-10-13 22:33:58,695 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 483 ImplicationChecksByTransitivity, 361.4ms TimeCoverageRelationStatistics Valid=579, Invalid=1491, Unknown=0, NotChecked=0, Total=2070 [2021-10-13 22:33:58,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3306 states. [2021-10-13 22:33:58,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3306 to 2113. [2021-10-13 22:33:58,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2113 states, 2112 states have (on average 2.7357954545454546) internal successors, (5778), 2112 states have internal predecessors, (5778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:58,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2113 states to 2113 states and 5778 transitions. [2021-10-13 22:33:58,719 INFO L78 Accepts]: Start accepts. Automaton has 2113 states and 5778 transitions. Word has length 90 [2021-10-13 22:33:58,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:58,719 INFO L470 AbstractCegarLoop]: Abstraction has 2113 states and 5778 transitions. [2021-10-13 22:33:58,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:58,719 INFO L276 IsEmpty]: Start isEmpty. Operand 2113 states and 5778 transitions. [2021-10-13 22:33:58,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-10-13 22:33:58,721 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:58,721 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:33:58,742 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2021-10-13 22:33:58,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:58,921 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:58,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:58,921 INFO L82 PathProgramCache]: Analyzing trace with hash -1270641956, now seen corresponding path program 74 times [2021-10-13 22:33:58,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:58,922 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790829793] [2021-10-13 22:33:58,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:58,922 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:58,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:59,072 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:59,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:59,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790829793] [2021-10-13 22:33:59,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790829793] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:59,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602912113] [2021-10-13 22:33:59,073 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:33:59,073 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:59,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:59,073 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:33:59,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2021-10-13 22:34:00,983 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:34:00,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:34:00,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 22:34:00,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:34:01,319 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:01,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602912113] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:01,320 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:34:01,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2021-10-13 22:34:01,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114867775] [2021-10-13 22:34:01,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 22:34:01,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:34:01,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 22:34:01,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2021-10-13 22:34:01,320 INFO L87 Difference]: Start difference. First operand 2113 states and 5778 transitions. Second operand has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:01,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:34:01,531 INFO L93 Difference]: Finished difference Result 3131 states and 8017 transitions. [2021-10-13 22:34:01,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 22:34:01,531 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-10-13 22:34:01,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:34:01,534 INFO L225 Difference]: With dead ends: 3131 [2021-10-13 22:34:01,534 INFO L226 Difference]: Without dead ends: 2861 [2021-10-13 22:34:01,534 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 227.9ms TimeCoverageRelationStatistics Valid=311, Invalid=949, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 22:34:01,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2861 states. [2021-10-13 22:34:01,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2861 to 2188. [2021-10-13 22:34:01,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2188 states, 2187 states have (on average 2.7448559670781894) internal successors, (6003), 2187 states have internal predecessors, (6003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:01,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2188 states to 2188 states and 6003 transitions. [2021-10-13 22:34:01,556 INFO L78 Accepts]: Start accepts. Automaton has 2188 states and 6003 transitions. Word has length 95 [2021-10-13 22:34:01,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:34:01,557 INFO L470 AbstractCegarLoop]: Abstraction has 2188 states and 6003 transitions. [2021-10-13 22:34:01,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:01,557 INFO L276 IsEmpty]: Start isEmpty. Operand 2188 states and 6003 transitions. [2021-10-13 22:34:01,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-10-13 22:34:01,558 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:34:01,558 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:34:01,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2021-10-13 22:34:01,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:01,759 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:34:01,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:34:01,759 INFO L82 PathProgramCache]: Analyzing trace with hash -1360017460, now seen corresponding path program 75 times [2021-10-13 22:34:01,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:34:01,759 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109202499] [2021-10-13 22:34:01,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:34:01,760 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:34:01,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:01,905 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:01,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:34:01,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109202499] [2021-10-13 22:34:01,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109202499] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:01,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102748376] [2021-10-13 22:34:01,906 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:34:01,906 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:01,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:34:01,906 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:34:01,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2021-10-13 22:34:03,850 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-10-13 22:34:03,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:34:03,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 22:34:03,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:34:04,146 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:04,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102748376] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:04,146 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:34:04,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2021-10-13 22:34:04,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139291902] [2021-10-13 22:34:04,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:34:04,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:34:04,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:34:04,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:34:04,147 INFO L87 Difference]: Start difference. First operand 2188 states and 6003 transitions. Second operand has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:04,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:34:04,406 INFO L93 Difference]: Finished difference Result 3451 states and 8732 transitions. [2021-10-13 22:34:04,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-13 22:34:04,407 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-10-13 22:34:04,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:34:04,410 INFO L225 Difference]: With dead ends: 3451 [2021-10-13 22:34:04,410 INFO L226 Difference]: Without dead ends: 3181 [2021-10-13 22:34:04,411 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 264.6ms TimeCoverageRelationStatistics Valid=355, Invalid=1127, Unknown=0, NotChecked=0, Total=1482 [2021-10-13 22:34:04,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3181 states. [2021-10-13 22:34:04,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3181 to 2263. [2021-10-13 22:34:04,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2263 states, 2262 states have (on average 2.753315649867374) internal successors, (6228), 2262 states have internal predecessors, (6228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:04,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2263 states to 2263 states and 6228 transitions. [2021-10-13 22:34:04,434 INFO L78 Accepts]: Start accepts. Automaton has 2263 states and 6228 transitions. Word has length 95 [2021-10-13 22:34:04,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:34:04,434 INFO L470 AbstractCegarLoop]: Abstraction has 2263 states and 6228 transitions. [2021-10-13 22:34:04,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:04,434 INFO L276 IsEmpty]: Start isEmpty. Operand 2263 states and 6228 transitions. [2021-10-13 22:34:04,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-10-13 22:34:04,436 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:34:04,436 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:34:04,459 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2021-10-13 22:34:04,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:04,637 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:34:04,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:34:04,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1892267558, now seen corresponding path program 76 times [2021-10-13 22:34:04,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:34:04,637 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65523347] [2021-10-13 22:34:04,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:34:04,637 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:34:04,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:04,808 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:04,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:34:04,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65523347] [2021-10-13 22:34:04,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65523347] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:04,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717388266] [2021-10-13 22:34:04,808 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:34:04,808 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:04,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:34:04,809 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:34:04,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2021-10-13 22:34:06,762 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:34:06,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:34:06,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 22:34:06,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:34:07,034 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:07,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717388266] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:07,034 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:34:07,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2021-10-13 22:34:07,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792872943] [2021-10-13 22:34:07,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 22:34:07,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:34:07,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 22:34:07,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2021-10-13 22:34:07,035 INFO L87 Difference]: Start difference. First operand 2263 states and 6228 transitions. Second operand has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:07,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:34:07,273 INFO L93 Difference]: Finished difference Result 3481 states and 8867 transitions. [2021-10-13 22:34:07,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-13 22:34:07,274 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-10-13 22:34:07,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:34:07,297 INFO L225 Difference]: With dead ends: 3481 [2021-10-13 22:34:07,297 INFO L226 Difference]: Without dead ends: 3211 [2021-10-13 22:34:07,297 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 274.4ms TimeCoverageRelationStatistics Valid=361, Invalid=1121, Unknown=0, NotChecked=0, Total=1482 [2021-10-13 22:34:07,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3211 states. [2021-10-13 22:34:07,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3211 to 2338. [2021-10-13 22:34:07,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2338 states, 2337 states have (on average 2.761232349165597) internal successors, (6453), 2337 states have internal predecessors, (6453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:07,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2338 states to 2338 states and 6453 transitions. [2021-10-13 22:34:07,321 INFO L78 Accepts]: Start accepts. Automaton has 2338 states and 6453 transitions. Word has length 95 [2021-10-13 22:34:07,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:34:07,321 INFO L470 AbstractCegarLoop]: Abstraction has 2338 states and 6453 transitions. [2021-10-13 22:34:07,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:07,322 INFO L276 IsEmpty]: Start isEmpty. Operand 2338 states and 6453 transitions. [2021-10-13 22:34:07,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-10-13 22:34:07,323 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:34:07,324 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:34:07,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2021-10-13 22:34:07,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable84 [2021-10-13 22:34:07,524 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:34:07,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:34:07,524 INFO L82 PathProgramCache]: Analyzing trace with hash -106106166, now seen corresponding path program 77 times [2021-10-13 22:34:07,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:34:07,525 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024521866] [2021-10-13 22:34:07,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:34:07,525 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:34:07,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:07,660 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:07,661 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:34:07,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024521866] [2021-10-13 22:34:07,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024521866] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:07,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182198056] [2021-10-13 22:34:07,661 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:34:07,661 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:07,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:34:07,662 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:34:07,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2021-10-13 22:34:09,677 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-10-13 22:34:09,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:34:09,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 22:34:09,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:34:09,946 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:09,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182198056] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:09,946 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:34:09,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2021-10-13 22:34:09,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705705907] [2021-10-13 22:34:09,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:34:09,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:34:09,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:34:09,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:34:09,947 INFO L87 Difference]: Start difference. First operand 2338 states and 6453 transitions. Second operand has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:10,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:34:10,246 INFO L93 Difference]: Finished difference Result 3506 states and 8992 transitions. [2021-10-13 22:34:10,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-13 22:34:10,246 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-10-13 22:34:10,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:34:10,250 INFO L225 Difference]: With dead ends: 3506 [2021-10-13 22:34:10,250 INFO L226 Difference]: Without dead ends: 3236 [2021-10-13 22:34:10,251 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 291.0ms TimeCoverageRelationStatistics Valid=383, Invalid=1257, Unknown=0, NotChecked=0, Total=1640 [2021-10-13 22:34:10,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3236 states. [2021-10-13 22:34:10,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3236 to 2413. [2021-10-13 22:34:10,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2413 states, 2412 states have (on average 2.7686567164179103) internal successors, (6678), 2412 states have internal predecessors, (6678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:10,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2413 states to 2413 states and 6678 transitions. [2021-10-13 22:34:10,277 INFO L78 Accepts]: Start accepts. Automaton has 2413 states and 6678 transitions. Word has length 95 [2021-10-13 22:34:10,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:34:10,277 INFO L470 AbstractCegarLoop]: Abstraction has 2413 states and 6678 transitions. [2021-10-13 22:34:10,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:10,277 INFO L276 IsEmpty]: Start isEmpty. Operand 2413 states and 6678 transitions. [2021-10-13 22:34:10,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-10-13 22:34:10,279 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:34:10,279 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:34:10,302 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0 [2021-10-13 22:34:10,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable85 [2021-10-13 22:34:10,480 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:34:10,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:34:10,480 INFO L82 PathProgramCache]: Analyzing trace with hash -176288168, now seen corresponding path program 78 times [2021-10-13 22:34:10,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:34:10,480 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690140429] [2021-10-13 22:34:10,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:34:10,480 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:34:10,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:10,621 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:10,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:34:10,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690140429] [2021-10-13 22:34:10,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690140429] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:10,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782785395] [2021-10-13 22:34:10,622 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:34:10,622 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:10,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:34:10,622 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:34:10,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2021-10-13 22:34:12,681 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-10-13 22:34:12,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:34:12,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 22:34:12,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:34:12,927 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:12,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782785395] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:12,927 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:34:12,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2021-10-13 22:34:12,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254517317] [2021-10-13 22:34:12,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 22:34:12,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:34:12,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 22:34:12,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2021-10-13 22:34:12,928 INFO L87 Difference]: Start difference. First operand 2413 states and 6678 transitions. Second operand has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:13,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:34:13,193 INFO L93 Difference]: Finished difference Result 3531 states and 9117 transitions. [2021-10-13 22:34:13,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-13 22:34:13,194 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-10-13 22:34:13,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:34:13,198 INFO L225 Difference]: With dead ends: 3531 [2021-10-13 22:34:13,198 INFO L226 Difference]: Without dead ends: 3261 [2021-10-13 22:34:13,198 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 248.7ms TimeCoverageRelationStatistics Valid=403, Invalid=1237, Unknown=0, NotChecked=0, Total=1640 [2021-10-13 22:34:13,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3261 states. [2021-10-13 22:34:13,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3261 to 2488. [2021-10-13 22:34:13,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2488 states, 2487 states have (on average 2.7756332931242462) internal successors, (6903), 2487 states have internal predecessors, (6903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:13,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2488 states to 2488 states and 6903 transitions. [2021-10-13 22:34:13,225 INFO L78 Accepts]: Start accepts. Automaton has 2488 states and 6903 transitions. Word has length 95 [2021-10-13 22:34:13,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:34:13,225 INFO L470 AbstractCegarLoop]: Abstraction has 2488 states and 6903 transitions. [2021-10-13 22:34:13,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:13,225 INFO L276 IsEmpty]: Start isEmpty. Operand 2488 states and 6903 transitions. [2021-10-13 22:34:13,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-10-13 22:34:13,227 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:34:13,227 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:34:13,250 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Forceful destruction successful, exit code 0 [2021-10-13 22:34:13,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2021-10-13 22:34:13,427 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:34:13,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:34:13,428 INFO L82 PathProgramCache]: Analyzing trace with hash 697705288, now seen corresponding path program 79 times [2021-10-13 22:34:13,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:34:13,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580582018] [2021-10-13 22:34:13,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:34:13,428 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:34:13,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:13,574 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:13,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:34:13,574 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580582018] [2021-10-13 22:34:13,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580582018] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:13,574 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37698346] [2021-10-13 22:34:13,574 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:34:13,574 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:13,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:34:13,575 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:34:13,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2021-10-13 22:34:15,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:15,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 22:34:15,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:34:15,919 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:15,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37698346] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:15,920 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:34:15,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2021-10-13 22:34:15,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040417846] [2021-10-13 22:34:15,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:34:15,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:34:15,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:34:15,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:34:15,921 INFO L87 Difference]: Start difference. First operand 2488 states and 6903 transitions. Second operand has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:16,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:34:16,266 INFO L93 Difference]: Finished difference Result 3556 states and 9242 transitions. [2021-10-13 22:34:16,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-13 22:34:16,267 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-10-13 22:34:16,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:34:16,270 INFO L225 Difference]: With dead ends: 3556 [2021-10-13 22:34:16,270 INFO L226 Difference]: Without dead ends: 3286 [2021-10-13 22:34:16,271 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 316.8ms TimeCoverageRelationStatistics Valid=427, Invalid=1379, Unknown=0, NotChecked=0, Total=1806 [2021-10-13 22:34:16,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3286 states. [2021-10-13 22:34:16,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3286 to 2563. [2021-10-13 22:34:16,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2563 states, 2562 states have (on average 2.782201405152225) internal successors, (7128), 2562 states have internal predecessors, (7128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:16,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2563 states to 2563 states and 7128 transitions. [2021-10-13 22:34:16,298 INFO L78 Accepts]: Start accepts. Automaton has 2563 states and 7128 transitions. Word has length 95 [2021-10-13 22:34:16,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:34:16,298 INFO L470 AbstractCegarLoop]: Abstraction has 2563 states and 7128 transitions. [2021-10-13 22:34:16,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:16,298 INFO L276 IsEmpty]: Start isEmpty. Operand 2563 states and 7128 transitions. [2021-10-13 22:34:16,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-10-13 22:34:16,300 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:34:16,300 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:34:16,323 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2021-10-13 22:34:16,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2021-10-13 22:34:16,501 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:34:16,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:34:16,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1192998998, now seen corresponding path program 80 times [2021-10-13 22:34:16,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:34:16,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485919565] [2021-10-13 22:34:16,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:34:16,502 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:34:16,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:16,887 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:16,887 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:34:16,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485919565] [2021-10-13 22:34:16,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485919565] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:16,888 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595361317] [2021-10-13 22:34:16,888 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:34:16,888 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:16,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:34:16,888 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:34:16,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2021-10-13 22:34:19,016 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:34:19,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:34:19,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 22:34:19,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:34:19,292 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:19,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [595361317] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:19,292 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:34:19,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2021-10-13 22:34:19,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732880936] [2021-10-13 22:34:19,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 22:34:19,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:34:19,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 22:34:19,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2021-10-13 22:34:19,293 INFO L87 Difference]: Start difference. First operand 2563 states and 7128 transitions. Second operand has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:19,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:34:19,591 INFO L93 Difference]: Finished difference Result 3581 states and 9367 transitions. [2021-10-13 22:34:19,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-13 22:34:19,592 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-10-13 22:34:19,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:34:19,596 INFO L225 Difference]: With dead ends: 3581 [2021-10-13 22:34:19,596 INFO L226 Difference]: Without dead ends: 3311 [2021-10-13 22:34:19,596 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 513.8ms TimeCoverageRelationStatistics Valid=461, Invalid=1345, Unknown=0, NotChecked=0, Total=1806 [2021-10-13 22:34:19,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3311 states. [2021-10-13 22:34:19,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3311 to 2638. [2021-10-13 22:34:19,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2638 states, 2637 states have (on average 2.78839590443686) internal successors, (7353), 2637 states have internal predecessors, (7353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:19,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2638 states to 2638 states and 7353 transitions. [2021-10-13 22:34:19,624 INFO L78 Accepts]: Start accepts. Automaton has 2638 states and 7353 transitions. Word has length 95 [2021-10-13 22:34:19,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:34:19,625 INFO L470 AbstractCegarLoop]: Abstraction has 2638 states and 7353 transitions. [2021-10-13 22:34:19,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:19,625 INFO L276 IsEmpty]: Start isEmpty. Operand 2638 states and 7353 transitions. [2021-10-13 22:34:19,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-10-13 22:34:19,627 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:34:19,627 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:34:19,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2021-10-13 22:34:19,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:19,827 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:34:19,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:34:19,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1351861946, now seen corresponding path program 81 times [2021-10-13 22:34:19,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:34:19,828 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703432547] [2021-10-13 22:34:19,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:34:19,828 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:34:19,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:19,952 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:19,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:34:19,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703432547] [2021-10-13 22:34:19,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703432547] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:19,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601982711] [2021-10-13 22:34:19,952 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:34:19,952 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:19,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:34:19,953 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:34:19,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2021-10-13 22:34:22,112 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-10-13 22:34:22,112 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:34:22,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 22:34:22,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:34:22,386 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:22,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601982711] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:22,386 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:34:22,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2021-10-13 22:34:22,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094352521] [2021-10-13 22:34:22,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:34:22,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:34:22,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:34:22,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:34:22,387 INFO L87 Difference]: Start difference. First operand 2638 states and 7353 transitions. Second operand has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:22,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:34:22,787 INFO L93 Difference]: Finished difference Result 3606 states and 9492 transitions. [2021-10-13 22:34:22,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-13 22:34:22,787 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-10-13 22:34:22,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:34:22,791 INFO L225 Difference]: With dead ends: 3606 [2021-10-13 22:34:22,791 INFO L226 Difference]: Without dead ends: 3336 [2021-10-13 22:34:22,791 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 448 ImplicationChecksByTransitivity, 363.1ms TimeCoverageRelationStatistics Valid=487, Invalid=1493, Unknown=0, NotChecked=0, Total=1980 [2021-10-13 22:34:22,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3336 states. [2021-10-13 22:34:22,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3336 to 2713. [2021-10-13 22:34:22,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2713 states, 2712 states have (on average 2.7942477876106193) internal successors, (7578), 2712 states have internal predecessors, (7578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:22,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2713 states to 2713 states and 7578 transitions. [2021-10-13 22:34:22,821 INFO L78 Accepts]: Start accepts. Automaton has 2713 states and 7578 transitions. Word has length 95 [2021-10-13 22:34:22,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:34:22,821 INFO L470 AbstractCegarLoop]: Abstraction has 2713 states and 7578 transitions. [2021-10-13 22:34:22,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:22,821 INFO L276 IsEmpty]: Start isEmpty. Operand 2713 states and 7578 transitions. [2021-10-13 22:34:22,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-10-13 22:34:22,823 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:34:22,823 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:34:22,847 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Ended with exit code 0 [2021-10-13 22:34:23,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89,85 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:23,024 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:34:23,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:34:23,024 INFO L82 PathProgramCache]: Analyzing trace with hash -441964588, now seen corresponding path program 82 times [2021-10-13 22:34:23,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:34:23,024 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258846870] [2021-10-13 22:34:23,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:34:23,025 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:34:23,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:23,139 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:23,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:34:23,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258846870] [2021-10-13 22:34:23,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258846870] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:23,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968645318] [2021-10-13 22:34:23,139 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:34:23,139 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:23,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:34:23,141 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:34:23,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2021-10-13 22:34:25,312 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:34:25,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:34:25,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 22:34:25,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:34:25,558 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:25,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968645318] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:25,558 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:34:25,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2021-10-13 22:34:25,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529617479] [2021-10-13 22:34:25,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 22:34:25,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:34:25,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 22:34:25,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2021-10-13 22:34:25,559 INFO L87 Difference]: Start difference. First operand 2713 states and 7578 transitions. Second operand has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:25,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:34:25,879 INFO L93 Difference]: Finished difference Result 3631 states and 9617 transitions. [2021-10-13 22:34:25,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-13 22:34:25,879 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-10-13 22:34:25,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:34:25,883 INFO L225 Difference]: With dead ends: 3631 [2021-10-13 22:34:25,883 INFO L226 Difference]: Without dead ends: 3361 [2021-10-13 22:34:25,884 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 497 ImplicationChecksByTransitivity, 283.5ms TimeCoverageRelationStatistics Valid=535, Invalid=1445, Unknown=0, NotChecked=0, Total=1980 [2021-10-13 22:34:25,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3361 states. [2021-10-13 22:34:25,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3361 to 2788. [2021-10-13 22:34:25,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2788 states, 2787 states have (on average 2.79978471474704) internal successors, (7803), 2787 states have internal predecessors, (7803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:25,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2788 states to 2788 states and 7803 transitions. [2021-10-13 22:34:25,916 INFO L78 Accepts]: Start accepts. Automaton has 2788 states and 7803 transitions. Word has length 95 [2021-10-13 22:34:25,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:34:25,916 INFO L470 AbstractCegarLoop]: Abstraction has 2788 states and 7803 transitions. [2021-10-13 22:34:25,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:25,917 INFO L276 IsEmpty]: Start isEmpty. Operand 2788 states and 7803 transitions. [2021-10-13 22:34:25,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-10-13 22:34:25,919 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:34:25,919 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:34:25,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Forceful destruction successful, exit code 0 [2021-10-13 22:34:26,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,86 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:26,120 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:34:26,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:34:26,121 INFO L82 PathProgramCache]: Analyzing trace with hash -309848892, now seen corresponding path program 83 times [2021-10-13 22:34:26,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:34:26,121 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472668731] [2021-10-13 22:34:26,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:34:26,121 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:34:26,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:26,254 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:26,255 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:34:26,255 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472668731] [2021-10-13 22:34:26,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472668731] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:26,255 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638336498] [2021-10-13 22:34:26,255 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:34:26,255 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:26,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:34:26,256 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:34:26,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2021-10-13 22:34:28,503 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-10-13 22:34:28,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:34:28,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 22:34:28,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:34:28,732 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:28,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638336498] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:28,732 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:34:28,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2021-10-13 22:34:28,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435315571] [2021-10-13 22:34:28,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:34:28,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:34:28,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:34:28,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:34:28,733 INFO L87 Difference]: Start difference. First operand 2788 states and 7803 transitions. Second operand has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:29,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:34:29,151 INFO L93 Difference]: Finished difference Result 3716 states and 9907 transitions. [2021-10-13 22:34:29,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-13 22:34:29,152 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-10-13 22:34:29,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:34:29,156 INFO L225 Difference]: With dead ends: 3716 [2021-10-13 22:34:29,156 INFO L226 Difference]: Without dead ends: 3446 [2021-10-13 22:34:29,156 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 520 ImplicationChecksByTransitivity, 379.1ms TimeCoverageRelationStatistics Valid=563, Invalid=1599, Unknown=0, NotChecked=0, Total=2162 [2021-10-13 22:34:29,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3446 states. [2021-10-13 22:34:29,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3446 to 2863. [2021-10-13 22:34:29,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2863 states, 2862 states have (on average 2.8120195667365477) internal successors, (8048), 2862 states have internal predecessors, (8048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:29,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2863 states to 2863 states and 8048 transitions. [2021-10-13 22:34:29,190 INFO L78 Accepts]: Start accepts. Automaton has 2863 states and 8048 transitions. Word has length 95 [2021-10-13 22:34:29,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:34:29,190 INFO L470 AbstractCegarLoop]: Abstraction has 2863 states and 8048 transitions. [2021-10-13 22:34:29,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:29,190 INFO L276 IsEmpty]: Start isEmpty. Operand 2863 states and 8048 transitions. [2021-10-13 22:34:29,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-10-13 22:34:29,192 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:34:29,192 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:34:29,218 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Forceful destruction successful, exit code 0 [2021-10-13 22:34:29,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,87 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:29,393 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:34:29,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:34:29,393 INFO L82 PathProgramCache]: Analyzing trace with hash -766231342, now seen corresponding path program 84 times [2021-10-13 22:34:29,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:34:29,393 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759517269] [2021-10-13 22:34:29,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:34:29,393 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:34:29,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:29,505 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:29,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:34:29,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759517269] [2021-10-13 22:34:29,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759517269] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:29,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795854929] [2021-10-13 22:34:29,505 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:34:29,505 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:29,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:34:29,506 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:34:29,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2021-10-13 22:34:31,773 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-10-13 22:34:31,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:34:31,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 22:34:31,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:34:31,955 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:31,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795854929] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:31,955 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:34:31,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2021-10-13 22:34:31,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917819220] [2021-10-13 22:34:31,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 22:34:31,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:34:31,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 22:34:31,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2021-10-13 22:34:31,956 INFO L87 Difference]: Start difference. First operand 2863 states and 8048 transitions. Second operand has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:32,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:34:32,311 INFO L93 Difference]: Finished difference Result 4458 states and 12031 transitions. [2021-10-13 22:34:32,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-13 22:34:32,312 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-10-13 22:34:32,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:34:32,318 INFO L225 Difference]: With dead ends: 4458 [2021-10-13 22:34:32,318 INFO L226 Difference]: Without dead ends: 4188 [2021-10-13 22:34:32,318 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 569 ImplicationChecksByTransitivity, 305.6ms TimeCoverageRelationStatistics Valid=626, Invalid=1536, Unknown=0, NotChecked=0, Total=2162 [2021-10-13 22:34:32,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4188 states. [2021-10-13 22:34:32,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4188 to 3043. [2021-10-13 22:34:32,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3043 states, 3042 states have (on average 2.829388560157791) internal successors, (8607), 3042 states have internal predecessors, (8607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:32,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3043 states to 3043 states and 8607 transitions. [2021-10-13 22:34:32,364 INFO L78 Accepts]: Start accepts. Automaton has 3043 states and 8607 transitions. Word has length 95 [2021-10-13 22:34:32,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:34:32,364 INFO L470 AbstractCegarLoop]: Abstraction has 3043 states and 8607 transitions. [2021-10-13 22:34:32,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:32,364 INFO L276 IsEmpty]: Start isEmpty. Operand 3043 states and 8607 transitions. [2021-10-13 22:34:32,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-10-13 22:34:32,369 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:34:32,369 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:34:32,394 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Ended with exit code 0 [2021-10-13 22:34:32,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,88 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:32,575 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:34:32,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:34:32,576 INFO L82 PathProgramCache]: Analyzing trace with hash -700989052, now seen corresponding path program 85 times [2021-10-13 22:34:32,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:34:32,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084884572] [2021-10-13 22:34:32,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:34:32,576 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:34:32,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:32,734 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:32,734 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:34:32,734 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084884572] [2021-10-13 22:34:32,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084884572] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:32,734 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266440510] [2021-10-13 22:34:32,734 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:34:32,734 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:32,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:34:32,735 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:34:32,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2021-10-13 22:34:35,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:35,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 22:34:35,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:34:35,254 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:35,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266440510] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:35,255 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:34:35,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2021-10-13 22:34:35,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538742500] [2021-10-13 22:34:35,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:34:35,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:34:35,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:34:35,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:34:35,256 INFO L87 Difference]: Start difference. First operand 3043 states and 8607 transitions. Second operand has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:35,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:34:35,734 INFO L93 Difference]: Finished difference Result 3920 states and 10681 transitions. [2021-10-13 22:34:35,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-13 22:34:35,734 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-10-13 22:34:35,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:34:35,739 INFO L225 Difference]: With dead ends: 3920 [2021-10-13 22:34:35,739 INFO L226 Difference]: Without dead ends: 3431 [2021-10-13 22:34:35,739 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 596 ImplicationChecksByTransitivity, 410.9ms TimeCoverageRelationStatistics Valid=658, Invalid=1694, Unknown=0, NotChecked=0, Total=2352 [2021-10-13 22:34:35,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3431 states. [2021-10-13 22:34:35,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3431 to 2034. [2021-10-13 22:34:35,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2034 states, 2033 states have (on average 2.73782587309395) internal successors, (5566), 2033 states have internal predecessors, (5566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:35,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2034 states to 2034 states and 5566 transitions. [2021-10-13 22:34:35,763 INFO L78 Accepts]: Start accepts. Automaton has 2034 states and 5566 transitions. Word has length 95 [2021-10-13 22:34:35,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:34:35,763 INFO L470 AbstractCegarLoop]: Abstraction has 2034 states and 5566 transitions. [2021-10-13 22:34:35,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:35,763 INFO L276 IsEmpty]: Start isEmpty. Operand 2034 states and 5566 transitions. [2021-10-13 22:34:35,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-13 22:34:35,765 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:34:35,765 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:34:35,790 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Ended with exit code 0 [2021-10-13 22:34:35,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable93 [2021-10-13 22:34:35,966 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:34:35,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:34:35,966 INFO L82 PathProgramCache]: Analyzing trace with hash -1226377678, now seen corresponding path program 86 times [2021-10-13 22:34:35,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:34:35,966 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440355613] [2021-10-13 22:34:35,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:34:35,966 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:34:36,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:36,158 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:36,158 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:34:36,158 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440355613] [2021-10-13 22:34:36,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440355613] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:36,158 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717611823] [2021-10-13 22:34:36,158 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:34:36,159 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:36,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:34:36,159 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:34:36,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2021-10-13 22:34:38,460 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:34:38,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:34:38,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 22:34:38,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:34:38,853 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:38,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [717611823] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:38,854 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:34:38,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2021-10-13 22:34:38,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126890209] [2021-10-13 22:34:38,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 22:34:38,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:34:38,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 22:34:38,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=360, Unknown=0, NotChecked=0, Total=462 [2021-10-13 22:34:38,858 INFO L87 Difference]: Start difference. First operand 2034 states and 5566 transitions. Second operand has 22 states, 22 states have (on average 5.818181818181818) internal successors, (128), 22 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:39,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:34:39,122 INFO L93 Difference]: Finished difference Result 3024 states and 7866 transitions. [2021-10-13 22:34:39,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-13 22:34:39,122 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.818181818181818) internal successors, (128), 22 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-10-13 22:34:39,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:34:39,126 INFO L225 Difference]: With dead ends: 3024 [2021-10-13 22:34:39,126 INFO L226 Difference]: Without dead ends: 2690 [2021-10-13 22:34:39,126 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 289.6ms TimeCoverageRelationStatistics Valid=445, Invalid=1277, Unknown=0, NotChecked=0, Total=1722 [2021-10-13 22:34:39,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2690 states. [2021-10-13 22:34:39,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2690 to 2119. [2021-10-13 22:34:39,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2119 states, 2118 states have (on average 2.7082152974504248) internal successors, (5736), 2118 states have internal predecessors, (5736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:39,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2119 states to 2119 states and 5736 transitions. [2021-10-13 22:34:39,147 INFO L78 Accepts]: Start accepts. Automaton has 2119 states and 5736 transitions. Word has length 100 [2021-10-13 22:34:39,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:34:39,147 INFO L470 AbstractCegarLoop]: Abstraction has 2119 states and 5736 transitions. [2021-10-13 22:34:39,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.818181818181818) internal successors, (128), 22 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:39,149 INFO L276 IsEmpty]: Start isEmpty. Operand 2119 states and 5736 transitions. [2021-10-13 22:34:39,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-13 22:34:39,153 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:34:39,153 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:34:39,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Forceful destruction successful, exit code 0 [2021-10-13 22:34:39,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable94 [2021-10-13 22:34:39,377 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:34:39,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:34:39,378 INFO L82 PathProgramCache]: Analyzing trace with hash -1710563978, now seen corresponding path program 87 times [2021-10-13 22:34:39,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:34:39,378 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149590062] [2021-10-13 22:34:39,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:34:39,378 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:34:39,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:39,543 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:39,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:34:39,543 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149590062] [2021-10-13 22:34:39,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149590062] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:39,543 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894543] [2021-10-13 22:34:39,543 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:34:39,543 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:39,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:34:39,544 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:34:39,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2021-10-13 22:34:41,886 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-10-13 22:34:41,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:34:41,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 22:34:41,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:34:42,206 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:42,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894543] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:42,207 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:34:42,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2021-10-13 22:34:42,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965152686] [2021-10-13 22:34:42,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:34:42,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:34:42,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:34:42,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:34:42,208 INFO L87 Difference]: Start difference. First operand 2119 states and 5736 transitions. Second operand has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:42,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:34:42,413 INFO L93 Difference]: Finished difference Result 3646 states and 9047 transitions. [2021-10-13 22:34:42,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-13 22:34:42,413 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-10-13 22:34:42,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:34:42,417 INFO L225 Difference]: With dead ends: 3646 [2021-10-13 22:34:42,417 INFO L226 Difference]: Without dead ends: 3376 [2021-10-13 22:34:42,417 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 225.4ms TimeCoverageRelationStatistics Valid=334, Invalid=926, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 22:34:42,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3376 states. [2021-10-13 22:34:42,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3376 to 2263. [2021-10-13 22:34:42,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2263 states, 2262 states have (on average 2.720159151193634) internal successors, (6153), 2262 states have internal predecessors, (6153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:42,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2263 states to 2263 states and 6153 transitions. [2021-10-13 22:34:42,441 INFO L78 Accepts]: Start accepts. Automaton has 2263 states and 6153 transitions. Word has length 100 [2021-10-13 22:34:42,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:34:42,441 INFO L470 AbstractCegarLoop]: Abstraction has 2263 states and 6153 transitions. [2021-10-13 22:34:42,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:42,441 INFO L276 IsEmpty]: Start isEmpty. Operand 2263 states and 6153 transitions. [2021-10-13 22:34:42,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-13 22:34:42,443 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:34:42,443 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:34:42,469 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Forceful destruction successful, exit code 0 [2021-10-13 22:34:42,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,91 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:42,651 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:34:42,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:34:42,651 INFO L82 PathProgramCache]: Analyzing trace with hash 1577299558, now seen corresponding path program 88 times [2021-10-13 22:34:42,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:34:42,651 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930134468] [2021-10-13 22:34:42,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:34:42,651 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:34:42,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:42,822 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:42,823 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:34:42,823 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930134468] [2021-10-13 22:34:42,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930134468] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:42,823 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888416297] [2021-10-13 22:34:42,823 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:34:42,823 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:42,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:34:42,824 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:34:42,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2021-10-13 22:34:45,174 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:34:45,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:34:45,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 22:34:45,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:34:45,497 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:45,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [888416297] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:45,497 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:34:45,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2021-10-13 22:34:45,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386464662] [2021-10-13 22:34:45,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 22:34:45,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:34:45,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 22:34:45,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2021-10-13 22:34:45,498 INFO L87 Difference]: Start difference. First operand 2263 states and 6153 transitions. Second operand has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:45,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:34:45,756 INFO L93 Difference]: Finished difference Result 3606 states and 9042 transitions. [2021-10-13 22:34:45,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-13 22:34:45,756 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-10-13 22:34:45,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:34:45,760 INFO L225 Difference]: With dead ends: 3606 [2021-10-13 22:34:45,760 INFO L226 Difference]: Without dead ends: 3336 [2021-10-13 22:34:45,760 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 280.4ms TimeCoverageRelationStatistics Valid=389, Invalid=1171, Unknown=0, NotChecked=0, Total=1560 [2021-10-13 22:34:45,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3336 states. [2021-10-13 22:34:45,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3336 to 2338. [2021-10-13 22:34:45,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2338 states, 2337 states have (on average 2.729139922978177) internal successors, (6378), 2337 states have internal predecessors, (6378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:45,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2338 states to 2338 states and 6378 transitions. [2021-10-13 22:34:45,785 INFO L78 Accepts]: Start accepts. Automaton has 2338 states and 6378 transitions. Word has length 100 [2021-10-13 22:34:45,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:34:45,785 INFO L470 AbstractCegarLoop]: Abstraction has 2338 states and 6378 transitions. [2021-10-13 22:34:45,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:45,785 INFO L276 IsEmpty]: Start isEmpty. Operand 2338 states and 6378 transitions. [2021-10-13 22:34:45,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-13 22:34:45,787 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:34:45,787 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:34:45,811 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Forceful destruction successful, exit code 0 [2021-10-13 22:34:45,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,92 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:45,993 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:34:45,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:34:45,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1712420596, now seen corresponding path program 89 times [2021-10-13 22:34:45,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:34:45,993 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135354818] [2021-10-13 22:34:45,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:34:45,994 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:34:46,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:46,177 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:46,177 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:34:46,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135354818] [2021-10-13 22:34:46,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135354818] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:46,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359317175] [2021-10-13 22:34:46,177 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:34:46,177 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:46,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:34:46,178 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:34:46,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2021-10-13 22:34:48,578 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-10-13 22:34:48,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:34:48,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 22:34:48,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:34:48,881 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:48,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359317175] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:48,881 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:34:48,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2021-10-13 22:34:48,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467176864] [2021-10-13 22:34:48,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:34:48,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:34:48,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:34:48,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:34:48,882 INFO L87 Difference]: Start difference. First operand 2338 states and 6378 transitions. Second operand has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:49,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:34:49,120 INFO L93 Difference]: Finished difference Result 3656 states and 9217 transitions. [2021-10-13 22:34:49,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-13 22:34:49,120 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-10-13 22:34:49,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:34:49,124 INFO L225 Difference]: With dead ends: 3656 [2021-10-13 22:34:49,124 INFO L226 Difference]: Without dead ends: 3386 [2021-10-13 22:34:49,124 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 276.9ms TimeCoverageRelationStatistics Valid=345, Invalid=1061, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 22:34:49,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3386 states. [2021-10-13 22:34:49,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3386 to 2413. [2021-10-13 22:34:49,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2413 states, 2412 states have (on average 2.737562189054726) internal successors, (6603), 2412 states have internal predecessors, (6603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:49,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2413 states to 2413 states and 6603 transitions. [2021-10-13 22:34:49,150 INFO L78 Accepts]: Start accepts. Automaton has 2413 states and 6603 transitions. Word has length 100 [2021-10-13 22:34:49,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:34:49,150 INFO L470 AbstractCegarLoop]: Abstraction has 2413 states and 6603 transitions. [2021-10-13 22:34:49,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:49,150 INFO L276 IsEmpty]: Start isEmpty. Operand 2413 states and 6603 transitions. [2021-10-13 22:34:49,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-13 22:34:49,152 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:34:49,152 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:34:49,176 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Forceful destruction successful, exit code 0 [2021-10-13 22:34:49,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,93 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:49,352 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:34:49,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:34:49,353 INFO L82 PathProgramCache]: Analyzing trace with hash 1623045092, now seen corresponding path program 90 times [2021-10-13 22:34:49,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:34:49,353 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344769875] [2021-10-13 22:34:49,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:34:49,353 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:34:49,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:49,509 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:49,510 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:34:49,510 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344769875] [2021-10-13 22:34:49,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344769875] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:49,510 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967147398] [2021-10-13 22:34:49,510 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:34:49,510 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:49,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:34:49,511 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:34:49,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2021-10-13 22:34:52,016 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-10-13 22:34:52,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:34:52,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 22:34:52,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:34:52,324 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:52,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967147398] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:52,325 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:34:52,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2021-10-13 22:34:52,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287454023] [2021-10-13 22:34:52,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 22:34:52,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:34:52,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 22:34:52,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2021-10-13 22:34:52,325 INFO L87 Difference]: Start difference. First operand 2413 states and 6603 transitions. Second operand has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:52,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:34:52,625 INFO L93 Difference]: Finished difference Result 3681 states and 9342 transitions. [2021-10-13 22:34:52,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-13 22:34:52,625 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-10-13 22:34:52,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:34:52,629 INFO L225 Difference]: With dead ends: 3681 [2021-10-13 22:34:52,629 INFO L226 Difference]: Without dead ends: 3411 [2021-10-13 22:34:52,630 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 307.7ms TimeCoverageRelationStatistics Valid=408, Invalid=1314, Unknown=0, NotChecked=0, Total=1722 [2021-10-13 22:34:52,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3411 states. [2021-10-13 22:34:52,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3411 to 2488. [2021-10-13 22:34:52,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2488 states, 2487 states have (on average 2.7454764776839564) internal successors, (6828), 2487 states have internal predecessors, (6828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:52,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2488 states to 2488 states and 6828 transitions. [2021-10-13 22:34:52,656 INFO L78 Accepts]: Start accepts. Automaton has 2488 states and 6828 transitions. Word has length 100 [2021-10-13 22:34:52,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:34:52,656 INFO L470 AbstractCegarLoop]: Abstraction has 2488 states and 6828 transitions. [2021-10-13 22:34:52,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:52,656 INFO L276 IsEmpty]: Start isEmpty. Operand 2488 states and 6828 transitions. [2021-10-13 22:34:52,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-13 22:34:52,658 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:34:52,658 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:34:52,683 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Ended with exit code 0 [2021-10-13 22:34:52,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,94 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:52,858 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:34:52,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:34:52,859 INFO L82 PathProgramCache]: Analyzing trace with hash 1090794994, now seen corresponding path program 91 times [2021-10-13 22:34:52,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:34:52,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482262485] [2021-10-13 22:34:52,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:34:52,859 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:34:52,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:53,000 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:53,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:34:53,001 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482262485] [2021-10-13 22:34:53,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482262485] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:53,001 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851276917] [2021-10-13 22:34:53,001 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:34:53,001 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:53,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:34:53,002 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:34:53,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2021-10-13 22:34:55,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:55,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 22:34:55,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:34:55,883 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:55,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851276917] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:55,891 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:34:55,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2021-10-13 22:34:55,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027854762] [2021-10-13 22:34:55,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:34:55,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:34:55,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:34:55,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:34:55,892 INFO L87 Difference]: Start difference. First operand 2488 states and 6828 transitions. Second operand has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:56,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:34:56,183 INFO L93 Difference]: Finished difference Result 3706 states and 9467 transitions. [2021-10-13 22:34:56,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-13 22:34:56,184 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-10-13 22:34:56,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:34:56,188 INFO L225 Difference]: With dead ends: 3706 [2021-10-13 22:34:56,188 INFO L226 Difference]: Without dead ends: 3436 [2021-10-13 22:34:56,188 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 271.1ms TimeCoverageRelationStatistics Valid=372, Invalid=1188, Unknown=0, NotChecked=0, Total=1560 [2021-10-13 22:34:56,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3436 states. [2021-10-13 22:34:56,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3436 to 2563. [2021-10-13 22:34:56,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2563 states, 2562 states have (on average 2.752927400468384) internal successors, (7053), 2562 states have internal predecessors, (7053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:56,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2563 states to 2563 states and 7053 transitions. [2021-10-13 22:34:56,217 INFO L78 Accepts]: Start accepts. Automaton has 2563 states and 7053 transitions. Word has length 100 [2021-10-13 22:34:56,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:34:56,217 INFO L470 AbstractCegarLoop]: Abstraction has 2563 states and 7053 transitions. [2021-10-13 22:34:56,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:56,217 INFO L276 IsEmpty]: Start isEmpty. Operand 2563 states and 7053 transitions. [2021-10-13 22:34:56,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-13 22:34:56,219 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:34:56,219 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:34:56,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Forceful destruction successful, exit code 0 [2021-10-13 22:34:56,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99 [2021-10-13 22:34:56,420 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:34:56,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:34:56,421 INFO L82 PathProgramCache]: Analyzing trace with hash -1418010910, now seen corresponding path program 92 times [2021-10-13 22:34:56,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:34:56,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062639258] [2021-10-13 22:34:56,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:34:56,421 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:34:56,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:56,595 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:56,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:34:56,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062639258] [2021-10-13 22:34:56,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062639258] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:56,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161082640] [2021-10-13 22:34:56,596 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:34:56,596 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:56,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:34:56,597 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:34:56,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2021-10-13 22:34:59,101 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:34:59,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:34:59,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 22:34:59,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:34:59,382 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:59,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161082640] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:59,382 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:34:59,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2021-10-13 22:34:59,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318605886] [2021-10-13 22:34:59,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 22:34:59,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:34:59,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 22:34:59,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2021-10-13 22:34:59,383 INFO L87 Difference]: Start difference. First operand 2563 states and 7053 transitions. Second operand has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:59,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:34:59,731 INFO L93 Difference]: Finished difference Result 3731 states and 9592 transitions. [2021-10-13 22:34:59,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-13 22:34:59,731 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-10-13 22:34:59,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:34:59,736 INFO L225 Difference]: With dead ends: 3731 [2021-10-13 22:34:59,736 INFO L226 Difference]: Without dead ends: 3461 [2021-10-13 22:34:59,736 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 362.9ms TimeCoverageRelationStatistics Valid=443, Invalid=1449, Unknown=0, NotChecked=0, Total=1892 [2021-10-13 22:34:59,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3461 states. [2021-10-13 22:34:59,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3461 to 2638. [2021-10-13 22:34:59,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2638 states, 2637 states have (on average 2.7599544937428897) internal successors, (7278), 2637 states have internal predecessors, (7278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:59,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2638 states to 2638 states and 7278 transitions. [2021-10-13 22:34:59,765 INFO L78 Accepts]: Start accepts. Automaton has 2638 states and 7278 transitions. Word has length 100 [2021-10-13 22:34:59,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:34:59,765 INFO L470 AbstractCegarLoop]: Abstraction has 2638 states and 7278 transitions. [2021-10-13 22:34:59,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:59,765 INFO L276 IsEmpty]: Start isEmpty. Operand 2638 states and 7278 transitions. [2021-10-13 22:34:59,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-13 22:34:59,767 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:34:59,767 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:34:59,792 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Forceful destruction successful, exit code 0 [2021-10-13 22:34:59,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2021-10-13 22:34:59,971 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:34:59,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:34:59,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1488192912, now seen corresponding path program 93 times [2021-10-13 22:34:59,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:34:59,972 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522500573] [2021-10-13 22:34:59,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:34:59,972 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:35:00,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:00,128 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:00,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:35:00,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522500573] [2021-10-13 22:35:00,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522500573] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:00,129 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071913626] [2021-10-13 22:35:00,129 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:35:00,129 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:00,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:35:00,129 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:35:00,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2021-10-13 22:35:02,689 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-10-13 22:35:02,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:35:02,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 22:35:02,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:35:02,948 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:02,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071913626] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:02,948 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:35:02,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2021-10-13 22:35:02,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094569661] [2021-10-13 22:35:02,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:35:02,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:35:02,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:35:02,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:35:02,949 INFO L87 Difference]: Start difference. First operand 2638 states and 7278 transitions. Second operand has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:03,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:35:03,246 INFO L93 Difference]: Finished difference Result 3756 states and 9717 transitions. [2021-10-13 22:35:03,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-13 22:35:03,246 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-10-13 22:35:03,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:35:03,250 INFO L225 Difference]: With dead ends: 3756 [2021-10-13 22:35:03,250 INFO L226 Difference]: Without dead ends: 3486 [2021-10-13 22:35:03,251 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 277.1ms TimeCoverageRelationStatistics Valid=415, Invalid=1307, Unknown=0, NotChecked=0, Total=1722 [2021-10-13 22:35:03,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3486 states. [2021-10-13 22:35:03,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3486 to 2713. [2021-10-13 22:35:03,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2713 states, 2712 states have (on average 2.7665929203539825) internal successors, (7503), 2712 states have internal predecessors, (7503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:03,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2713 states to 2713 states and 7503 transitions. [2021-10-13 22:35:03,282 INFO L78 Accepts]: Start accepts. Automaton has 2713 states and 7503 transitions. Word has length 100 [2021-10-13 22:35:03,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:35:03,282 INFO L470 AbstractCegarLoop]: Abstraction has 2713 states and 7503 transitions. [2021-10-13 22:35:03,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:03,282 INFO L276 IsEmpty]: Start isEmpty. Operand 2713 states and 7503 transitions. [2021-10-13 22:35:03,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-13 22:35:03,284 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:35:03,284 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:35:03,310 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Forceful destruction successful, exit code 0 [2021-10-13 22:35:03,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2021-10-13 22:35:03,484 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:35:03,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:35:03,485 INFO L82 PathProgramCache]: Analyzing trace with hash -614199456, now seen corresponding path program 94 times [2021-10-13 22:35:03,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:35:03,485 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311066602] [2021-10-13 22:35:03,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:35:03,485 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:35:03,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:03,633 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:03,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:35:03,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311066602] [2021-10-13 22:35:03,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311066602] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:03,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708700961] [2021-10-13 22:35:03,633 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:35:03,633 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:03,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:35:03,634 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:35:03,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2021-10-13 22:35:06,228 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:35:06,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:35:06,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 22:35:06,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:35:06,498 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:06,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708700961] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:06,498 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:35:06,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2021-10-13 22:35:06,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847791179] [2021-10-13 22:35:06,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 22:35:06,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:35:06,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 22:35:06,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2021-10-13 22:35:06,499 INFO L87 Difference]: Start difference. First operand 2713 states and 7503 transitions. Second operand has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:06,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:35:06,892 INFO L93 Difference]: Finished difference Result 3781 states and 9842 transitions. [2021-10-13 22:35:06,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-13 22:35:06,892 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-10-13 22:35:06,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:35:06,896 INFO L225 Difference]: With dead ends: 3781 [2021-10-13 22:35:06,896 INFO L226 Difference]: Without dead ends: 3511 [2021-10-13 22:35:06,896 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 360.7ms TimeCoverageRelationStatistics Valid=494, Invalid=1576, Unknown=0, NotChecked=0, Total=2070 [2021-10-13 22:35:06,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3511 states. [2021-10-13 22:35:06,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3511 to 2788. [2021-10-13 22:35:06,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2788 states, 2787 states have (on average 2.772874058127018) internal successors, (7728), 2787 states have internal predecessors, (7728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:06,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2788 states to 2788 states and 7728 transitions. [2021-10-13 22:35:06,927 INFO L78 Accepts]: Start accepts. Automaton has 2788 states and 7728 transitions. Word has length 100 [2021-10-13 22:35:06,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:35:06,927 INFO L470 AbstractCegarLoop]: Abstraction has 2788 states and 7728 transitions. [2021-10-13 22:35:06,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:06,927 INFO L276 IsEmpty]: Start isEmpty. Operand 2788 states and 7728 transitions. [2021-10-13 22:35:06,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-13 22:35:06,929 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:35:06,929 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:35:06,955 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Ended with exit code 0 [2021-10-13 22:35:07,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2021-10-13 22:35:07,130 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:35:07,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:35:07,130 INFO L82 PathProgramCache]: Analyzing trace with hash -118905746, now seen corresponding path program 95 times [2021-10-13 22:35:07,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:35:07,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725420848] [2021-10-13 22:35:07,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:35:07,130 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:35:07,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:07,272 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:07,272 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:35:07,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725420848] [2021-10-13 22:35:07,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725420848] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:07,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922196702] [2021-10-13 22:35:07,272 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:35:07,272 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:07,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:35:07,273 INFO L229 MonitoredProcess]: Starting monitored process 99 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:35:07,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2021-10-13 22:35:09,899 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-10-13 22:35:09,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:35:09,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 22:35:09,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:35:10,135 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:10,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922196702] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:10,135 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:35:10,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2021-10-13 22:35:10,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022126497] [2021-10-13 22:35:10,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:35:10,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:35:10,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:35:10,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:35:10,136 INFO L87 Difference]: Start difference. First operand 2788 states and 7728 transitions. Second operand has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:10,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:35:10,452 INFO L93 Difference]: Finished difference Result 3806 states and 9967 transitions. [2021-10-13 22:35:10,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-13 22:35:10,452 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-10-13 22:35:10,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:35:10,456 INFO L225 Difference]: With dead ends: 3806 [2021-10-13 22:35:10,456 INFO L226 Difference]: Without dead ends: 3536 [2021-10-13 22:35:10,457 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 290.5ms TimeCoverageRelationStatistics Valid=474, Invalid=1418, Unknown=0, NotChecked=0, Total=1892 [2021-10-13 22:35:10,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3536 states. [2021-10-13 22:35:10,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3536 to 2863. [2021-10-13 22:35:10,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2863 states, 2862 states have (on average 2.7788259958071277) internal successors, (7953), 2862 states have internal predecessors, (7953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:10,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2863 states to 2863 states and 7953 transitions. [2021-10-13 22:35:10,488 INFO L78 Accepts]: Start accepts. Automaton has 2863 states and 7953 transitions. Word has length 100 [2021-10-13 22:35:10,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:35:10,489 INFO L470 AbstractCegarLoop]: Abstraction has 2863 states and 7953 transitions. [2021-10-13 22:35:10,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:10,489 INFO L276 IsEmpty]: Start isEmpty. Operand 2863 states and 7953 transitions. [2021-10-13 22:35:10,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-13 22:35:10,491 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:35:10,491 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:35:10,519 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Forceful destruction successful, exit code 0 [2021-10-13 22:35:10,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2021-10-13 22:35:10,691 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:35:10,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:35:10,692 INFO L82 PathProgramCache]: Analyzing trace with hash 1631200606, now seen corresponding path program 96 times [2021-10-13 22:35:10,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:35:10,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138860251] [2021-10-13 22:35:10,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:35:10,692 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:35:10,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:10,841 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:10,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:35:10,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138860251] [2021-10-13 22:35:10,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138860251] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:10,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121535231] [2021-10-13 22:35:10,842 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:35:10,842 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:10,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:35:10,842 INFO L229 MonitoredProcess]: Starting monitored process 100 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:35:10,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2021-10-13 22:35:13,515 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-10-13 22:35:13,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:35:13,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 22:35:13,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:35:13,756 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:13,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121535231] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:13,756 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:35:13,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2021-10-13 22:35:13,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315193793] [2021-10-13 22:35:13,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 22:35:13,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:35:13,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 22:35:13,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2021-10-13 22:35:13,757 INFO L87 Difference]: Start difference. First operand 2863 states and 7953 transitions. Second operand has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:14,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:35:14,182 INFO L93 Difference]: Finished difference Result 3831 states and 10092 transitions. [2021-10-13 22:35:14,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-13 22:35:14,183 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-10-13 22:35:14,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:35:14,187 INFO L225 Difference]: With dead ends: 3831 [2021-10-13 22:35:14,187 INFO L226 Difference]: Without dead ends: 3561 [2021-10-13 22:35:14,187 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 391.0ms TimeCoverageRelationStatistics Valid=561, Invalid=1695, Unknown=0, NotChecked=0, Total=2256 [2021-10-13 22:35:14,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3561 states. [2021-10-13 22:35:14,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3561 to 2938. [2021-10-13 22:35:14,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2938 states, 2937 states have (on average 2.7844739530132787) internal successors, (8178), 2937 states have internal predecessors, (8178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:14,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2938 states to 2938 states and 8178 transitions. [2021-10-13 22:35:14,220 INFO L78 Accepts]: Start accepts. Automaton has 2938 states and 8178 transitions. Word has length 100 [2021-10-13 22:35:14,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:35:14,220 INFO L470 AbstractCegarLoop]: Abstraction has 2938 states and 8178 transitions. [2021-10-13 22:35:14,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:14,220 INFO L276 IsEmpty]: Start isEmpty. Operand 2938 states and 8178 transitions. [2021-10-13 22:35:14,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-13 22:35:14,222 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:35:14,222 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:35:14,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Forceful destruction successful, exit code 0 [2021-10-13 22:35:14,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,100 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:14,423 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:35:14,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:35:14,423 INFO L82 PathProgramCache]: Analyzing trace with hash -1753869332, now seen corresponding path program 97 times [2021-10-13 22:35:14,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:35:14,423 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072545016] [2021-10-13 22:35:14,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:35:14,423 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:35:14,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:14,575 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:14,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:35:14,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072545016] [2021-10-13 22:35:14,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072545016] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:14,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781020534] [2021-10-13 22:35:14,576 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:35:14,576 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:14,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:35:14,577 INFO L229 MonitoredProcess]: Starting monitored process 101 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:35:14,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2021-10-13 22:35:17,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:17,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 22:35:17,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:35:17,502 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:17,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781020534] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:17,502 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:35:17,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2021-10-13 22:35:17,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508712404] [2021-10-13 22:35:17,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:35:17,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:35:17,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:35:17,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:35:17,503 INFO L87 Difference]: Start difference. First operand 2938 states and 8178 transitions. Second operand has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:17,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:35:17,856 INFO L93 Difference]: Finished difference Result 3856 states and 10217 transitions. [2021-10-13 22:35:17,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-13 22:35:17,857 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-10-13 22:35:17,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:35:17,861 INFO L225 Difference]: With dead ends: 3856 [2021-10-13 22:35:17,861 INFO L226 Difference]: Without dead ends: 3586 [2021-10-13 22:35:17,861 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 480 ImplicationChecksByTransitivity, 315.9ms TimeCoverageRelationStatistics Valid=549, Invalid=1521, Unknown=0, NotChecked=0, Total=2070 [2021-10-13 22:35:17,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3586 states. [2021-10-13 22:35:17,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3586 to 3013. [2021-10-13 22:35:17,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3013 states, 3012 states have (on average 2.789840637450199) internal successors, (8403), 3012 states have internal predecessors, (8403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:17,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3013 states to 3013 states and 8403 transitions. [2021-10-13 22:35:17,894 INFO L78 Accepts]: Start accepts. Automaton has 3013 states and 8403 transitions. Word has length 100 [2021-10-13 22:35:17,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:35:17,895 INFO L470 AbstractCegarLoop]: Abstraction has 3013 states and 8403 transitions. [2021-10-13 22:35:17,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:17,895 INFO L276 IsEmpty]: Start isEmpty. Operand 3013 states and 8403 transitions. [2021-10-13 22:35:17,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-13 22:35:17,898 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:35:17,898 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:35:17,923 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Ended with exit code 0 [2021-10-13 22:35:18,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,101 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:18,100 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:35:18,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:35:18,100 INFO L82 PathProgramCache]: Analyzing trace with hash -1621753636, now seen corresponding path program 98 times [2021-10-13 22:35:18,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:35:18,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806004083] [2021-10-13 22:35:18,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:35:18,101 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:35:18,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:18,247 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:18,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:35:18,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806004083] [2021-10-13 22:35:18,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806004083] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:18,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495919737] [2021-10-13 22:35:18,248 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:35:18,248 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:18,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:35:18,249 INFO L229 MonitoredProcess]: Starting monitored process 102 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:35:18,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2021-10-13 22:35:20,977 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:35:20,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:35:20,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 22:35:20,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:35:21,197 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:21,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495919737] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:21,198 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:35:21,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2021-10-13 22:35:21,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065733377] [2021-10-13 22:35:21,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 22:35:21,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:35:21,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 22:35:21,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2021-10-13 22:35:21,198 INFO L87 Difference]: Start difference. First operand 3013 states and 8403 transitions. Second operand has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:21,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:35:21,659 INFO L93 Difference]: Finished difference Result 3941 states and 10507 transitions. [2021-10-13 22:35:21,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-13 22:35:21,659 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-10-13 22:35:21,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:35:21,664 INFO L225 Difference]: With dead ends: 3941 [2021-10-13 22:35:21,664 INFO L226 Difference]: Without dead ends: 3671 [2021-10-13 22:35:21,664 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 422.1ms TimeCoverageRelationStatistics Valid=644, Invalid=1806, Unknown=0, NotChecked=0, Total=2450 [2021-10-13 22:35:21,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3671 states. [2021-10-13 22:35:21,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3671 to 3088. [2021-10-13 22:35:21,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3088 states, 3087 states have (on average 2.801425332037577) internal successors, (8648), 3087 states have internal predecessors, (8648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:21,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3088 states to 3088 states and 8648 transitions. [2021-10-13 22:35:21,701 INFO L78 Accepts]: Start accepts. Automaton has 3088 states and 8648 transitions. Word has length 100 [2021-10-13 22:35:21,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:35:21,701 INFO L470 AbstractCegarLoop]: Abstraction has 3088 states and 8648 transitions. [2021-10-13 22:35:21,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:21,701 INFO L276 IsEmpty]: Start isEmpty. Operand 3088 states and 8648 transitions. [2021-10-13 22:35:21,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-13 22:35:21,704 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:35:21,704 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:35:21,732 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Forceful destruction successful, exit code 0 [2021-10-13 22:35:21,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2021-10-13 22:35:21,904 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:35:21,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:35:21,904 INFO L82 PathProgramCache]: Analyzing trace with hash -2078136086, now seen corresponding path program 99 times [2021-10-13 22:35:21,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:35:21,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743211350] [2021-10-13 22:35:21,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:35:21,905 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:35:21,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:22,060 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:22,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:35:22,061 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743211350] [2021-10-13 22:35:22,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743211350] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:22,061 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236048574] [2021-10-13 22:35:22,061 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:35:22,061 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:22,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:35:22,062 INFO L229 MonitoredProcess]: Starting monitored process 103 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:35:22,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2021-10-13 22:35:24,817 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-10-13 22:35:24,817 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:35:24,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 22:35:24,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:35:25,011 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:25,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236048574] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:25,011 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:35:25,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2021-10-13 22:35:25,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968518892] [2021-10-13 22:35:25,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:35:25,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:35:25,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:35:25,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:35:25,012 INFO L87 Difference]: Start difference. First operand 3088 states and 8648 transitions. Second operand has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:25,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:35:25,388 INFO L93 Difference]: Finished difference Result 4708 states and 12681 transitions. [2021-10-13 22:35:25,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-13 22:35:25,388 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-10-13 22:35:25,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:35:25,394 INFO L225 Difference]: With dead ends: 4708 [2021-10-13 22:35:25,394 INFO L226 Difference]: Without dead ends: 4438 [2021-10-13 22:35:25,394 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 545 ImplicationChecksByTransitivity, 346.9ms TimeCoverageRelationStatistics Valid=641, Invalid=1615, Unknown=0, NotChecked=0, Total=2256 [2021-10-13 22:35:25,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4438 states. [2021-10-13 22:35:25,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4438 to 3268. [2021-10-13 22:35:25,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3268 states, 3267 states have (on average 2.8181818181818183) internal successors, (9207), 3267 states have internal predecessors, (9207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:25,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3268 states to 3268 states and 9207 transitions. [2021-10-13 22:35:25,431 INFO L78 Accepts]: Start accepts. Automaton has 3268 states and 9207 transitions. Word has length 100 [2021-10-13 22:35:25,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:35:25,431 INFO L470 AbstractCegarLoop]: Abstraction has 3268 states and 9207 transitions. [2021-10-13 22:35:25,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:25,431 INFO L276 IsEmpty]: Start isEmpty. Operand 3268 states and 9207 transitions. [2021-10-13 22:35:25,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-13 22:35:25,433 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:35:25,433 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:35:25,459 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Forceful destruction successful, exit code 0 [2021-10-13 22:35:25,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2021-10-13 22:35:25,634 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:35:25,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:35:25,634 INFO L82 PathProgramCache]: Analyzing trace with hash -2012893796, now seen corresponding path program 100 times [2021-10-13 22:35:25,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:35:25,634 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034623621] [2021-10-13 22:35:25,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:35:25,634 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:35:25,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:25,776 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:25,776 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:35:25,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034623621] [2021-10-13 22:35:25,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034623621] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:25,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136116700] [2021-10-13 22:35:25,777 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:35:25,777 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:25,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:35:25,777 INFO L229 MonitoredProcess]: Starting monitored process 104 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:35:25,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2021-10-13 22:35:28,571 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:35:28,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:35:28,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 22:35:28,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:35:28,772 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:28,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136116700] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:28,773 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:35:28,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2021-10-13 22:35:28,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325237343] [2021-10-13 22:35:28,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 22:35:28,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:35:28,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 22:35:28,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2021-10-13 22:35:28,774 INFO L87 Difference]: Start difference. First operand 3268 states and 9207 transitions. Second operand has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:29,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:35:29,255 INFO L93 Difference]: Finished difference Result 4195 states and 11381 transitions. [2021-10-13 22:35:29,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-13 22:35:29,255 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-10-13 22:35:29,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:35:29,259 INFO L225 Difference]: With dead ends: 4195 [2021-10-13 22:35:29,259 INFO L226 Difference]: Without dead ends: 3706 [2021-10-13 22:35:29,260 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 641 ImplicationChecksByTransitivity, 439.4ms TimeCoverageRelationStatistics Valid=746, Invalid=1906, Unknown=0, NotChecked=0, Total=2652 [2021-10-13 22:35:29,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3706 states. [2021-10-13 22:35:29,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3706 to 2313. [2021-10-13 22:35:29,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2313 states, 2312 states have (on average 2.737024221453287) internal successors, (6328), 2312 states have internal predecessors, (6328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:29,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2313 states to 2313 states and 6328 transitions. [2021-10-13 22:35:29,286 INFO L78 Accepts]: Start accepts. Automaton has 2313 states and 6328 transitions. Word has length 100 [2021-10-13 22:35:29,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:35:29,286 INFO L470 AbstractCegarLoop]: Abstraction has 2313 states and 6328 transitions. [2021-10-13 22:35:29,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:29,286 INFO L276 IsEmpty]: Start isEmpty. Operand 2313 states and 6328 transitions. [2021-10-13 22:35:29,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-13 22:35:29,288 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:35:29,288 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:35:29,314 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Forceful destruction successful, exit code 0 [2021-10-13 22:35:29,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,104 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:29,488 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:35:29,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:35:29,489 INFO L82 PathProgramCache]: Analyzing trace with hash -522543603, now seen corresponding path program 101 times [2021-10-13 22:35:29,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:35:29,489 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785614780] [2021-10-13 22:35:29,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:35:29,489 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:35:29,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:29,675 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:29,675 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:35:29,676 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785614780] [2021-10-13 22:35:29,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785614780] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:29,676 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763140955] [2021-10-13 22:35:29,676 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:35:29,676 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:29,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:35:29,676 INFO L229 MonitoredProcess]: Starting monitored process 105 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:35:29,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2021-10-13 22:35:32,492 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-10-13 22:35:32,492 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:35:32,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 22:35:32,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:35:32,831 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:32,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1763140955] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:32,831 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:35:32,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-10-13 22:35:32,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412967733] [2021-10-13 22:35:32,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:35:32,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:35:32,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:35:32,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:35:32,832 INFO L87 Difference]: Start difference. First operand 2313 states and 6328 transitions. Second operand has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:33,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:35:33,081 INFO L93 Difference]: Finished difference Result 3431 states and 8767 transitions. [2021-10-13 22:35:33,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-13 22:35:33,082 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-10-13 22:35:33,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:35:33,085 INFO L225 Difference]: With dead ends: 3431 [2021-10-13 22:35:33,085 INFO L226 Difference]: Without dead ends: 3161 [2021-10-13 22:35:33,086 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 272.7ms TimeCoverageRelationStatistics Valid=416, Invalid=1224, Unknown=0, NotChecked=0, Total=1640 [2021-10-13 22:35:33,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3161 states. [2021-10-13 22:35:33,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3161 to 2388. [2021-10-13 22:35:33,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2388 states, 2387 states have (on average 2.7452869710934227) internal successors, (6553), 2387 states have internal predecessors, (6553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:33,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2388 states to 2388 states and 6553 transitions. [2021-10-13 22:35:33,110 INFO L78 Accepts]: Start accepts. Automaton has 2388 states and 6553 transitions. Word has length 105 [2021-10-13 22:35:33,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:35:33,110 INFO L470 AbstractCegarLoop]: Abstraction has 2388 states and 6553 transitions. [2021-10-13 22:35:33,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:33,110 INFO L276 IsEmpty]: Start isEmpty. Operand 2388 states and 6553 transitions. [2021-10-13 22:35:33,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-13 22:35:33,112 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:35:33,112 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:35:33,138 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Ended with exit code 0 [2021-10-13 22:35:33,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,105 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:33,313 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:35:33,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:35:33,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1529647363, now seen corresponding path program 102 times [2021-10-13 22:35:33,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:35:33,313 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763572608] [2021-10-13 22:35:33,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:35:33,313 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:35:33,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:33,506 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:33,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:35:33,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763572608] [2021-10-13 22:35:33,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763572608] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:33,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824519579] [2021-10-13 22:35:33,507 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:35:33,507 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:33,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:35:33,543 INFO L229 MonitoredProcess]: Starting monitored process 106 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:35:33,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2021-10-13 22:35:36,432 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-10-13 22:35:36,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:35:36,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 22:35:36,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:35:36,781 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:36,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1824519579] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:36,781 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:35:36,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2021-10-13 22:35:36,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522788848] [2021-10-13 22:35:36,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 22:35:36,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:35:36,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 22:35:36,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2021-10-13 22:35:36,782 INFO L87 Difference]: Start difference. First operand 2388 states and 6553 transitions. Second operand has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:37,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:35:37,075 INFO L93 Difference]: Finished difference Result 3801 states and 9582 transitions. [2021-10-13 22:35:37,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-13 22:35:37,075 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-10-13 22:35:37,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:35:37,079 INFO L225 Difference]: With dead ends: 3801 [2021-10-13 22:35:37,079 INFO L226 Difference]: Without dead ends: 3531 [2021-10-13 22:35:37,080 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 319.8ms TimeCoverageRelationStatistics Valid=465, Invalid=1427, Unknown=0, NotChecked=0, Total=1892 [2021-10-13 22:35:37,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3531 states. [2021-10-13 22:35:37,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3531 to 2463. [2021-10-13 22:35:37,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2463 states, 2462 states have (on average 2.753046303818034) internal successors, (6778), 2462 states have internal predecessors, (6778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:37,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2463 states to 2463 states and 6778 transitions. [2021-10-13 22:35:37,107 INFO L78 Accepts]: Start accepts. Automaton has 2463 states and 6778 transitions. Word has length 105 [2021-10-13 22:35:37,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:35:37,107 INFO L470 AbstractCegarLoop]: Abstraction has 2463 states and 6778 transitions. [2021-10-13 22:35:37,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:37,107 INFO L276 IsEmpty]: Start isEmpty. Operand 2463 states and 6778 transitions. [2021-10-13 22:35:37,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-13 22:35:37,109 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:35:37,109 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:35:37,138 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Forceful destruction successful, exit code 0 [2021-10-13 22:35:37,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable110 [2021-10-13 22:35:37,311 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:35:37,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:35:37,311 INFO L82 PathProgramCache]: Analyzing trace with hash -1394526325, now seen corresponding path program 103 times [2021-10-13 22:35:37,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:35:37,311 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520818236] [2021-10-13 22:35:37,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:35:37,312 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:35:37,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:37,489 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:37,489 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:35:37,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520818236] [2021-10-13 22:35:37,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520818236] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:37,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073576909] [2021-10-13 22:35:37,490 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:35:37,490 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:37,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:35:37,490 INFO L229 MonitoredProcess]: Starting monitored process 107 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:35:37,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2021-10-13 22:35:40,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:40,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 22:35:40,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:35:40,723 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:40,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1073576909] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:40,723 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:35:40,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-10-13 22:35:40,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465750436] [2021-10-13 22:35:40,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:35:40,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:35:40,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:35:40,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:35:40,724 INFO L87 Difference]: Start difference. First operand 2463 states and 6778 transitions. Second operand has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:41,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:35:41,014 INFO L93 Difference]: Finished difference Result 3831 states and 9717 transitions. [2021-10-13 22:35:41,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-13 22:35:41,014 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-10-13 22:35:41,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:35:41,018 INFO L225 Difference]: With dead ends: 3831 [2021-10-13 22:35:41,018 INFO L226 Difference]: Without dead ends: 3561 [2021-10-13 22:35:41,019 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 295.8ms TimeCoverageRelationStatistics Valid=467, Invalid=1425, Unknown=0, NotChecked=0, Total=1892 [2021-10-13 22:35:41,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3561 states. [2021-10-13 22:35:41,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3561 to 2538. [2021-10-13 22:35:41,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2538 states, 2537 states have (on average 2.760346866377611) internal successors, (7003), 2537 states have internal predecessors, (7003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:41,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2538 states to 2538 states and 7003 transitions. [2021-10-13 22:35:41,048 INFO L78 Accepts]: Start accepts. Automaton has 2538 states and 7003 transitions. Word has length 105 [2021-10-13 22:35:41,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:35:41,048 INFO L470 AbstractCegarLoop]: Abstraction has 2538 states and 7003 transitions. [2021-10-13 22:35:41,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:41,048 INFO L276 IsEmpty]: Start isEmpty. Operand 2538 states and 7003 transitions. [2021-10-13 22:35:41,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-13 22:35:41,050 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:35:41,050 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:35:41,076 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Ended with exit code 0 [2021-10-13 22:35:41,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 107 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2021-10-13 22:35:41,250 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:35:41,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:35:41,251 INFO L82 PathProgramCache]: Analyzing trace with hash -1483901829, now seen corresponding path program 104 times [2021-10-13 22:35:41,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:35:41,251 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992408741] [2021-10-13 22:35:41,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:35:41,251 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:35:41,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:41,442 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:41,442 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:35:41,442 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992408741] [2021-10-13 22:35:41,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992408741] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:41,442 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001647110] [2021-10-13 22:35:41,442 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:35:41,442 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:41,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:35:41,443 INFO L229 MonitoredProcess]: Starting monitored process 108 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:35:41,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2021-10-13 22:35:44,440 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:35:44,440 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:35:44,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 22:35:44,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:35:44,768 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:44,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001647110] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:44,769 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:35:44,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2021-10-13 22:35:44,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220071644] [2021-10-13 22:35:44,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 22:35:44,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:35:44,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 22:35:44,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2021-10-13 22:35:44,770 INFO L87 Difference]: Start difference. First operand 2538 states and 7003 transitions. Second operand has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:45,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:35:45,105 INFO L93 Difference]: Finished difference Result 3856 states and 9842 transitions. [2021-10-13 22:35:45,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-13 22:35:45,105 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-10-13 22:35:45,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:35:45,110 INFO L225 Difference]: With dead ends: 3856 [2021-10-13 22:35:45,110 INFO L226 Difference]: Without dead ends: 3586 [2021-10-13 22:35:45,110 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 353.6ms TimeCoverageRelationStatistics Valid=490, Invalid=1580, Unknown=0, NotChecked=0, Total=2070 [2021-10-13 22:35:45,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3586 states. [2021-10-13 22:35:45,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3586 to 2613. [2021-10-13 22:35:45,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2613 states, 2612 states have (on average 2.767228177641654) internal successors, (7228), 2612 states have internal predecessors, (7228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:45,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2613 states to 2613 states and 7228 transitions. [2021-10-13 22:35:45,140 INFO L78 Accepts]: Start accepts. Automaton has 2613 states and 7228 transitions. Word has length 105 [2021-10-13 22:35:45,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:35:45,140 INFO L470 AbstractCegarLoop]: Abstraction has 2613 states and 7228 transitions. [2021-10-13 22:35:45,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:45,141 INFO L276 IsEmpty]: Start isEmpty. Operand 2613 states and 7228 transitions. [2021-10-13 22:35:45,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-13 22:35:45,142 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:35:45,143 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:35:45,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Forceful destruction successful, exit code 0 [2021-10-13 22:35:45,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2021-10-13 22:35:45,343 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:35:45,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:35:45,343 INFO L82 PathProgramCache]: Analyzing trace with hash -2016151927, now seen corresponding path program 105 times [2021-10-13 22:35:45,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:35:45,343 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134491388] [2021-10-13 22:35:45,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:35:45,344 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:35:45,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:45,525 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:45,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:35:45,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134491388] [2021-10-13 22:35:45,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134491388] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:45,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040433986] [2021-10-13 22:35:45,526 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:35:45,526 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:45,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:35:45,527 INFO L229 MonitoredProcess]: Starting monitored process 109 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:35:45,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2021-10-13 22:35:48,540 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-10-13 22:35:48,541 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:35:48,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 22:35:48,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:35:48,838 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:48,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040433986] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:48,839 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:35:48,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-10-13 22:35:48,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363941192] [2021-10-13 22:35:48,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:35:48,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:35:48,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:35:48,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:35:48,839 INFO L87 Difference]: Start difference. First operand 2613 states and 7228 transitions. Second operand has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:49,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:35:49,173 INFO L93 Difference]: Finished difference Result 3881 states and 9967 transitions. [2021-10-13 22:35:49,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-13 22:35:49,174 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-10-13 22:35:49,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:35:49,178 INFO L225 Difference]: With dead ends: 3881 [2021-10-13 22:35:49,178 INFO L226 Difference]: Without dead ends: 3611 [2021-10-13 22:35:49,179 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 310.6ms TimeCoverageRelationStatistics Valid=506, Invalid=1564, Unknown=0, NotChecked=0, Total=2070 [2021-10-13 22:35:49,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3611 states. [2021-10-13 22:35:49,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3611 to 2688. [2021-10-13 22:35:49,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2688 states, 2687 states have (on average 2.773725344250093) internal successors, (7453), 2687 states have internal predecessors, (7453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:49,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2688 states to 2688 states and 7453 transitions. [2021-10-13 22:35:49,255 INFO L78 Accepts]: Start accepts. Automaton has 2688 states and 7453 transitions. Word has length 105 [2021-10-13 22:35:49,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:35:49,256 INFO L470 AbstractCegarLoop]: Abstraction has 2688 states and 7453 transitions. [2021-10-13 22:35:49,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:49,256 INFO L276 IsEmpty]: Start isEmpty. Operand 2688 states and 7453 transitions. [2021-10-13 22:35:49,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-13 22:35:49,258 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:35:49,258 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:35:49,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Forceful destruction successful, exit code 0 [2021-10-13 22:35:49,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113,109 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:49,458 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:35:49,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:35:49,459 INFO L82 PathProgramCache]: Analyzing trace with hash -229990535, now seen corresponding path program 106 times [2021-10-13 22:35:49,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:35:49,459 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894700298] [2021-10-13 22:35:49,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:35:49,459 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:35:49,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:49,631 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:49,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:35:49,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894700298] [2021-10-13 22:35:49,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894700298] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:49,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688493945] [2021-10-13 22:35:49,632 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:35:49,632 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:49,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:35:49,633 INFO L229 MonitoredProcess]: Starting monitored process 110 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:35:49,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Waiting until timeout for monitored process [2021-10-13 22:35:52,693 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:35:52,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:35:52,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 22:35:52,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:35:53,044 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:53,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688493945] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:53,045 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:35:53,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2021-10-13 22:35:53,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080090797] [2021-10-13 22:35:53,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 22:35:53,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:35:53,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 22:35:53,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2021-10-13 22:35:53,045 INFO L87 Difference]: Start difference. First operand 2688 states and 7453 transitions. Second operand has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:53,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:35:53,431 INFO L93 Difference]: Finished difference Result 3906 states and 10092 transitions. [2021-10-13 22:35:53,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-13 22:35:53,431 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-10-13 22:35:53,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:35:53,436 INFO L225 Difference]: With dead ends: 3906 [2021-10-13 22:35:53,436 INFO L226 Difference]: Without dead ends: 3636 [2021-10-13 22:35:53,436 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 384.9ms TimeCoverageRelationStatistics Valid=531, Invalid=1725, Unknown=0, NotChecked=0, Total=2256 [2021-10-13 22:35:53,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3636 states. [2021-10-13 22:35:53,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3636 to 2763. [2021-10-13 22:35:53,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2763 states, 2762 states have (on average 2.779869659666908) internal successors, (7678), 2762 states have internal predecessors, (7678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:53,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2763 states to 2763 states and 7678 transitions. [2021-10-13 22:35:53,467 INFO L78 Accepts]: Start accepts. Automaton has 2763 states and 7678 transitions. Word has length 105 [2021-10-13 22:35:53,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:35:53,467 INFO L470 AbstractCegarLoop]: Abstraction has 2763 states and 7678 transitions. [2021-10-13 22:35:53,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:53,467 INFO L276 IsEmpty]: Start isEmpty. Operand 2763 states and 7678 transitions. [2021-10-13 22:35:53,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-13 22:35:53,470 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:35:53,470 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:35:53,497 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Ended with exit code 0 [2021-10-13 22:35:53,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2021-10-13 22:35:53,670 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:35:53,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:35:53,670 INFO L82 PathProgramCache]: Analyzing trace with hash -300172537, now seen corresponding path program 107 times [2021-10-13 22:35:53,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:35:53,671 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861509060] [2021-10-13 22:35:53,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:35:53,671 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:35:53,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:53,851 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:53,851 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:35:53,851 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861509060] [2021-10-13 22:35:53,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861509060] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:53,851 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537654211] [2021-10-13 22:35:53,851 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:35:53,851 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:53,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:35:53,852 INFO L229 MonitoredProcess]: Starting monitored process 111 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:35:53,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2021-10-13 22:35:56,974 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-10-13 22:35:56,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:35:56,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 22:35:56,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:35:57,265 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:57,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537654211] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:57,265 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:35:57,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-10-13 22:35:57,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458551830] [2021-10-13 22:35:57,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:35:57,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:35:57,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:35:57,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:35:57,266 INFO L87 Difference]: Start difference. First operand 2763 states and 7678 transitions. Second operand has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:57,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:35:57,605 INFO L93 Difference]: Finished difference Result 3931 states and 10217 transitions. [2021-10-13 22:35:57,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-13 22:35:57,605 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-10-13 22:35:57,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:35:57,610 INFO L225 Difference]: With dead ends: 3931 [2021-10-13 22:35:57,610 INFO L226 Difference]: Without dead ends: 3661 [2021-10-13 22:35:57,610 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 530 ImplicationChecksByTransitivity, 321.6ms TimeCoverageRelationStatistics Valid=561, Invalid=1695, Unknown=0, NotChecked=0, Total=2256 [2021-10-13 22:35:57,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3661 states. [2021-10-13 22:35:57,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3661 to 2838. [2021-10-13 22:35:57,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2838 states, 2837 states have (on average 2.785689108212901) internal successors, (7903), 2837 states have internal predecessors, (7903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:57,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2838 states to 2838 states and 7903 transitions. [2021-10-13 22:35:57,651 INFO L78 Accepts]: Start accepts. Automaton has 2838 states and 7903 transitions. Word has length 105 [2021-10-13 22:35:57,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:35:57,652 INFO L470 AbstractCegarLoop]: Abstraction has 2838 states and 7903 transitions. [2021-10-13 22:35:57,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:57,652 INFO L276 IsEmpty]: Start isEmpty. Operand 2838 states and 7903 transitions. [2021-10-13 22:35:57,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-13 22:35:57,654 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:35:57,654 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:35:57,681 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Ended with exit code 0 [2021-10-13 22:35:57,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 111 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable115 [2021-10-13 22:35:57,862 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:35:57,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:35:57,862 INFO L82 PathProgramCache]: Analyzing trace with hash 573820919, now seen corresponding path program 108 times [2021-10-13 22:35:57,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:35:57,863 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471552745] [2021-10-13 22:35:57,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:35:57,863 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:35:57,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:58,069 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:58,069 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:35:58,069 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471552745] [2021-10-13 22:35:58,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471552745] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:58,069 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207877673] [2021-10-13 22:35:58,069 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:35:58,069 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:58,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:35:58,070 INFO L229 MonitoredProcess]: Starting monitored process 112 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:35:58,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process [2021-10-13 22:36:01,280 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-10-13 22:36:01,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:36:01,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 22:36:01,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:36:01,569 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:01,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207877673] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:01,570 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:36:01,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2021-10-13 22:36:01,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596729203] [2021-10-13 22:36:01,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 22:36:01,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:36:01,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 22:36:01,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2021-10-13 22:36:01,570 INFO L87 Difference]: Start difference. First operand 2838 states and 7903 transitions. Second operand has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:02,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:36:02,002 INFO L93 Difference]: Finished difference Result 3956 states and 10342 transitions. [2021-10-13 22:36:02,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-13 22:36:02,002 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-10-13 22:36:02,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:36:02,007 INFO L225 Difference]: With dead ends: 3956 [2021-10-13 22:36:02,007 INFO L226 Difference]: Without dead ends: 3686 [2021-10-13 22:36:02,007 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 550 ImplicationChecksByTransitivity, 430.7ms TimeCoverageRelationStatistics Valid=588, Invalid=1862, Unknown=0, NotChecked=0, Total=2450 [2021-10-13 22:36:02,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3686 states. [2021-10-13 22:36:02,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3686 to 2913. [2021-10-13 22:36:02,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2913 states, 2912 states have (on average 2.791208791208791) internal successors, (8128), 2912 states have internal predecessors, (8128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:02,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2913 states to 2913 states and 8128 transitions. [2021-10-13 22:36:02,040 INFO L78 Accepts]: Start accepts. Automaton has 2913 states and 8128 transitions. Word has length 105 [2021-10-13 22:36:02,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:36:02,041 INFO L470 AbstractCegarLoop]: Abstraction has 2913 states and 8128 transitions. [2021-10-13 22:36:02,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:02,041 INFO L276 IsEmpty]: Start isEmpty. Operand 2913 states and 8128 transitions. [2021-10-13 22:36:02,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-13 22:36:02,043 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:36:02,043 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:36:02,071 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Ended with exit code 0 [2021-10-13 22:36:02,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable116 [2021-10-13 22:36:02,247 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:36:02,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:36:02,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1069114629, now seen corresponding path program 109 times [2021-10-13 22:36:02,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:36:02,248 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272451928] [2021-10-13 22:36:02,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:36:02,248 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:36:02,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:36:02,392 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:02,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:36:02,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272451928] [2021-10-13 22:36:02,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272451928] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:02,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6283292] [2021-10-13 22:36:02,393 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:36:02,393 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:02,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:36:02,394 INFO L229 MonitoredProcess]: Starting monitored process 113 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:36:02,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Waiting until timeout for monitored process [2021-10-13 22:36:05,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:36:05,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 22:36:05,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:36:05,869 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:05,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6283292] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:05,870 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:36:05,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-10-13 22:36:05,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920967986] [2021-10-13 22:36:05,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:36:05,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:36:05,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:36:05,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:36:05,870 INFO L87 Difference]: Start difference. First operand 2913 states and 8128 transitions. Second operand has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:06,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:36:06,242 INFO L93 Difference]: Finished difference Result 3981 states and 10467 transitions. [2021-10-13 22:36:06,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-13 22:36:06,242 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-10-13 22:36:06,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:36:06,247 INFO L225 Difference]: With dead ends: 3981 [2021-10-13 22:36:06,247 INFO L226 Difference]: Without dead ends: 3711 [2021-10-13 22:36:06,247 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 608 ImplicationChecksByTransitivity, 342.7ms TimeCoverageRelationStatistics Valid=632, Invalid=1818, Unknown=0, NotChecked=0, Total=2450 [2021-10-13 22:36:06,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3711 states. [2021-10-13 22:36:06,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3711 to 2988. [2021-10-13 22:36:06,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2988 states, 2987 states have (on average 2.7964512889186475) internal successors, (8353), 2987 states have internal predecessors, (8353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:06,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2988 states to 2988 states and 8353 transitions. [2021-10-13 22:36:06,282 INFO L78 Accepts]: Start accepts. Automaton has 2988 states and 8353 transitions. Word has length 105 [2021-10-13 22:36:06,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:36:06,282 INFO L470 AbstractCegarLoop]: Abstraction has 2988 states and 8353 transitions. [2021-10-13 22:36:06,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:06,283 INFO L276 IsEmpty]: Start isEmpty. Operand 2988 states and 8353 transitions. [2021-10-13 22:36:06,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-13 22:36:06,285 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:36:06,285 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:36:06,312 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Ended with exit code 0 [2021-10-13 22:36:06,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable117 [2021-10-13 22:36:06,485 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:36:06,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:36:06,486 INFO L82 PathProgramCache]: Analyzing trace with hash -1475746315, now seen corresponding path program 110 times [2021-10-13 22:36:06,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:36:06,486 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857940091] [2021-10-13 22:36:06,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:36:06,486 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:36:06,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:36:06,632 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:06,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:36:06,632 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857940091] [2021-10-13 22:36:06,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857940091] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:06,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582926265] [2021-10-13 22:36:06,633 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:36:06,633 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:06,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:36:06,633 INFO L229 MonitoredProcess]: Starting monitored process 114 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:36:06,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Waiting until timeout for monitored process [2021-10-13 22:36:09,884 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:36:09,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:36:09,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 22:36:09,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:36:10,146 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:10,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582926265] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:10,147 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:36:10,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2021-10-13 22:36:10,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674776685] [2021-10-13 22:36:10,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 22:36:10,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:36:10,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 22:36:10,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2021-10-13 22:36:10,147 INFO L87 Difference]: Start difference. First operand 2988 states and 8353 transitions. Second operand has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:10,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:36:10,603 INFO L93 Difference]: Finished difference Result 4006 states and 10592 transitions. [2021-10-13 22:36:10,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-13 22:36:10,604 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-10-13 22:36:10,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:36:10,608 INFO L225 Difference]: With dead ends: 4006 [2021-10-13 22:36:10,608 INFO L226 Difference]: Without dead ends: 3736 [2021-10-13 22:36:10,609 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 631 ImplicationChecksByTransitivity, 427.8ms TimeCoverageRelationStatistics Valid=661, Invalid=1991, Unknown=0, NotChecked=0, Total=2652 [2021-10-13 22:36:10,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3736 states. [2021-10-13 22:36:10,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3736 to 3063. [2021-10-13 22:36:10,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3063 states, 3062 states have (on average 2.8014369693011103) internal successors, (8578), 3062 states have internal predecessors, (8578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:10,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3063 states to 3063 states and 8578 transitions. [2021-10-13 22:36:10,643 INFO L78 Accepts]: Start accepts. Automaton has 3063 states and 8578 transitions. Word has length 105 [2021-10-13 22:36:10,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:36:10,643 INFO L470 AbstractCegarLoop]: Abstraction has 3063 states and 8578 transitions. [2021-10-13 22:36:10,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:10,643 INFO L276 IsEmpty]: Start isEmpty. Operand 3063 states and 8578 transitions. [2021-10-13 22:36:10,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-13 22:36:10,645 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:36:10,645 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:36:10,673 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Ended with exit code 0 [2021-10-13 22:36:10,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118,114 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:10,846 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:36:10,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:36:10,846 INFO L82 PathProgramCache]: Analyzing trace with hash -565848957, now seen corresponding path program 111 times [2021-10-13 22:36:10,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:36:10,846 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861457857] [2021-10-13 22:36:10,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:36:10,846 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:36:10,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:36:11,031 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:11,031 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:36:11,031 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861457857] [2021-10-13 22:36:11,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861457857] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:11,031 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24840237] [2021-10-13 22:36:11,031 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:36:11,031 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:11,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:36:11,032 INFO L229 MonitoredProcess]: Starting monitored process 115 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:36:11,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Waiting until timeout for monitored process [2021-10-13 22:36:14,265 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-10-13 22:36:14,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:36:14,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 22:36:14,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:36:14,500 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:14,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24840237] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:14,501 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:36:14,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-10-13 22:36:14,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571838621] [2021-10-13 22:36:14,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:36:14,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:36:14,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:36:14,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:36:14,501 INFO L87 Difference]: Start difference. First operand 3063 states and 8578 transitions. Second operand has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:14,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:36:14,895 INFO L93 Difference]: Finished difference Result 4031 states and 10717 transitions. [2021-10-13 22:36:14,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-13 22:36:14,895 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-10-13 22:36:14,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:36:14,900 INFO L225 Difference]: With dead ends: 4031 [2021-10-13 22:36:14,900 INFO L226 Difference]: Without dead ends: 3761 [2021-10-13 22:36:14,900 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 690 ImplicationChecksByTransitivity, 358.4ms TimeCoverageRelationStatistics Valid=719, Invalid=1933, Unknown=0, NotChecked=0, Total=2652 [2021-10-13 22:36:14,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3761 states. [2021-10-13 22:36:14,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3761 to 3138. [2021-10-13 22:36:14,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3138 states, 3137 states have (on average 2.8061842524705134) internal successors, (8803), 3137 states have internal predecessors, (8803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:14,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3138 states to 3138 states and 8803 transitions. [2021-10-13 22:36:14,968 INFO L78 Accepts]: Start accepts. Automaton has 3138 states and 8803 transitions. Word has length 105 [2021-10-13 22:36:14,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:36:14,968 INFO L470 AbstractCegarLoop]: Abstraction has 3138 states and 8803 transitions. [2021-10-13 22:36:14,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:14,968 INFO L276 IsEmpty]: Start isEmpty. Operand 3138 states and 8803 transitions. [2021-10-13 22:36:14,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-13 22:36:14,971 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:36:14,971 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:36:15,001 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Ended with exit code 0 [2021-10-13 22:36:15,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,115 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:15,175 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:36:15,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:36:15,176 INFO L82 PathProgramCache]: Analyzing trace with hash -433733261, now seen corresponding path program 112 times [2021-10-13 22:36:15,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:36:15,176 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083419141] [2021-10-13 22:36:15,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:36:15,176 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:36:15,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:36:15,316 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:15,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:36:15,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083419141] [2021-10-13 22:36:15,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083419141] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:15,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153058879] [2021-10-13 22:36:15,317 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:36:15,317 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:15,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:36:15,317 INFO L229 MonitoredProcess]: Starting monitored process 116 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:36:15,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Waiting until timeout for monitored process [2021-10-13 22:36:18,609 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:36:18,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:36:18,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 22:36:18,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:36:18,849 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:18,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [153058879] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:18,850 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:36:18,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2021-10-13 22:36:18,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439087563] [2021-10-13 22:36:18,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 22:36:18,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:36:18,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 22:36:18,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2021-10-13 22:36:18,850 INFO L87 Difference]: Start difference. First operand 3138 states and 8803 transitions. Second operand has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:19,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:36:19,346 INFO L93 Difference]: Finished difference Result 4116 states and 11007 transitions. [2021-10-13 22:36:19,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-13 22:36:19,346 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-10-13 22:36:19,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:36:19,351 INFO L225 Difference]: With dead ends: 4116 [2021-10-13 22:36:19,351 INFO L226 Difference]: Without dead ends: 3846 [2021-10-13 22:36:19,352 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 716 ImplicationChecksByTransitivity, 458.6ms TimeCoverageRelationStatistics Valid=750, Invalid=2112, Unknown=0, NotChecked=0, Total=2862 [2021-10-13 22:36:19,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3846 states. [2021-10-13 22:36:19,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3846 to 3213. [2021-10-13 22:36:19,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3213 states, 3212 states have (on average 2.816936488169365) internal successors, (9048), 3212 states have internal predecessors, (9048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:19,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3213 states to 3213 states and 9048 transitions. [2021-10-13 22:36:19,390 INFO L78 Accepts]: Start accepts. Automaton has 3213 states and 9048 transitions. Word has length 105 [2021-10-13 22:36:19,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:36:19,391 INFO L470 AbstractCegarLoop]: Abstraction has 3213 states and 9048 transitions. [2021-10-13 22:36:19,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:19,391 INFO L276 IsEmpty]: Start isEmpty. Operand 3213 states and 9048 transitions. [2021-10-13 22:36:19,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-13 22:36:19,393 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:36:19,393 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:36:19,423 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Forceful destruction successful, exit code 0 [2021-10-13 22:36:19,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,116 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:19,594 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:36:19,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:36:19,594 INFO L82 PathProgramCache]: Analyzing trace with hash -890115711, now seen corresponding path program 113 times [2021-10-13 22:36:19,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:36:19,594 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165974053] [2021-10-13 22:36:19,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:36:19,594 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:36:19,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:36:19,785 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:19,785 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:36:19,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165974053] [2021-10-13 22:36:19,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165974053] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:19,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103335002] [2021-10-13 22:36:19,786 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:36:19,786 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:19,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:36:19,786 INFO L229 MonitoredProcess]: Starting monitored process 117 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:36:19,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Waiting until timeout for monitored process [2021-10-13 22:36:23,147 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-10-13 22:36:23,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:36:23,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 22:36:23,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:36:23,369 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:23,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103335002] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:23,369 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:36:23,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-10-13 22:36:23,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745160467] [2021-10-13 22:36:23,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:36:23,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:36:23,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:36:23,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:36:23,370 INFO L87 Difference]: Start difference. First operand 3213 states and 9048 transitions. Second operand has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:23,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:36:23,790 INFO L93 Difference]: Finished difference Result 4858 states and 13131 transitions. [2021-10-13 22:36:23,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-13 22:36:23,791 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-10-13 22:36:23,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:36:23,833 INFO L225 Difference]: With dead ends: 4858 [2021-10-13 22:36:23,833 INFO L226 Difference]: Without dead ends: 4588 [2021-10-13 22:36:23,833 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 775 ImplicationChecksByTransitivity, 385.1ms TimeCoverageRelationStatistics Valid=823, Invalid=2039, Unknown=0, NotChecked=0, Total=2862 [2021-10-13 22:36:23,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4588 states. [2021-10-13 22:36:23,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4588 to 3393. [2021-10-13 22:36:23,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3393 states, 3392 states have (on average 2.832252358490566) internal successors, (9607), 3392 states have internal predecessors, (9607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:23,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3393 states to 3393 states and 9607 transitions. [2021-10-13 22:36:23,868 INFO L78 Accepts]: Start accepts. Automaton has 3393 states and 9607 transitions. Word has length 105 [2021-10-13 22:36:23,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:36:23,869 INFO L470 AbstractCegarLoop]: Abstraction has 3393 states and 9607 transitions. [2021-10-13 22:36:23,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:23,869 INFO L276 IsEmpty]: Start isEmpty. Operand 3393 states and 9607 transitions. [2021-10-13 22:36:23,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-13 22:36:23,871 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:36:23,871 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:36:23,900 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Forceful destruction successful, exit code 0 [2021-10-13 22:36:24,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,117 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:24,072 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:36:24,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:36:24,072 INFO L82 PathProgramCache]: Analyzing trace with hash -824873421, now seen corresponding path program 114 times [2021-10-13 22:36:24,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:36:24,072 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253988808] [2021-10-13 22:36:24,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:36:24,073 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:36:24,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:36:24,209 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:24,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:36:24,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253988808] [2021-10-13 22:36:24,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253988808] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:24,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719546587] [2021-10-13 22:36:24,209 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:36:24,209 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:24,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:36:24,210 INFO L229 MonitoredProcess]: Starting monitored process 118 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:36:24,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Waiting until timeout for monitored process [2021-10-13 22:36:27,571 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-10-13 22:36:27,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:36:27,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 22:36:27,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:36:27,807 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:27,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1719546587] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:27,807 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:36:27,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2021-10-13 22:36:27,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360614496] [2021-10-13 22:36:27,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 22:36:27,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:36:27,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 22:36:27,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2021-10-13 22:36:27,808 INFO L87 Difference]: Start difference. First operand 3393 states and 9607 transitions. Second operand has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:28,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:36:28,406 INFO L93 Difference]: Finished difference Result 4726 states and 12796 transitions. [2021-10-13 22:36:28,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-13 22:36:28,406 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-10-13 22:36:28,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:36:28,412 INFO L225 Difference]: With dead ends: 4726 [2021-10-13 22:36:28,412 INFO L226 Difference]: Without dead ends: 4151 [2021-10-13 22:36:28,412 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 916 ImplicationChecksByTransitivity, 546.2ms TimeCoverageRelationStatistics Valid=896, Invalid=2526, Unknown=0, NotChecked=0, Total=3422 [2021-10-13 22:36:28,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4151 states. [2021-10-13 22:36:28,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4151 to 3428. [2021-10-13 22:36:28,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3428 states, 3427 states have (on average 2.825503355704698) internal successors, (9683), 3427 states have internal predecessors, (9683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:28,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3428 states to 3428 states and 9683 transitions. [2021-10-13 22:36:28,448 INFO L78 Accepts]: Start accepts. Automaton has 3428 states and 9683 transitions. Word has length 105 [2021-10-13 22:36:28,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:36:28,448 INFO L470 AbstractCegarLoop]: Abstraction has 3428 states and 9683 transitions. [2021-10-13 22:36:28,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:28,448 INFO L276 IsEmpty]: Start isEmpty. Operand 3428 states and 9683 transitions. [2021-10-13 22:36:28,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-10-13 22:36:28,451 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:36:28,451 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:36:28,480 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Ended with exit code 0 [2021-10-13 22:36:28,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122,118 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:28,651 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:36:28,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:36:28,652 INFO L82 PathProgramCache]: Analyzing trace with hash -817343005, now seen corresponding path program 115 times [2021-10-13 22:36:28,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:36:28,652 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191634604] [2021-10-13 22:36:28,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:36:28,652 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:36:28,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:36:28,881 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:28,881 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:36:28,881 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191634604] [2021-10-13 22:36:28,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191634604] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:28,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116130866] [2021-10-13 22:36:28,882 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:36:28,882 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:28,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:36:28,882 INFO L229 MonitoredProcess]: Starting monitored process 119 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:36:28,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Waiting until timeout for monitored process [2021-10-13 22:36:32,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:36:32,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 22:36:32,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:36:32,681 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:32,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116130866] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:32,681 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:36:32,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 25 [2021-10-13 22:36:32,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711901325] [2021-10-13 22:36:32,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-13 22:36:32,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:36:32,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-13 22:36:32,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=467, Unknown=0, NotChecked=0, Total=600 [2021-10-13 22:36:32,682 INFO L87 Difference]: Start difference. First operand 3428 states and 9683 transitions. Second operand has 25 states, 25 states have (on average 5.6) internal successors, (140), 25 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:32,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:36:32,987 INFO L93 Difference]: Finished difference Result 4468 states and 12083 transitions. [2021-10-13 22:36:32,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-13 22:36:32,987 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.6) internal successors, (140), 25 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-10-13 22:36:32,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:36:32,992 INFO L225 Difference]: With dead ends: 4468 [2021-10-13 22:36:32,992 INFO L226 Difference]: Without dead ends: 4134 [2021-10-13 22:36:32,993 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 425 ImplicationChecksByTransitivity, 348.0ms TimeCoverageRelationStatistics Valid=572, Invalid=1590, Unknown=0, NotChecked=0, Total=2162 [2021-10-13 22:36:33,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4134 states. [2021-10-13 22:36:33,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4134 to 3513. [2021-10-13 22:36:33,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3513 states, 3512 states have (on average 2.805523917995444) internal successors, (9853), 3512 states have internal predecessors, (9853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:33,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3513 states to 3513 states and 9853 transitions. [2021-10-13 22:36:33,046 INFO L78 Accepts]: Start accepts. Automaton has 3513 states and 9853 transitions. Word has length 110 [2021-10-13 22:36:33,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:36:33,047 INFO L470 AbstractCegarLoop]: Abstraction has 3513 states and 9853 transitions. [2021-10-13 22:36:33,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.6) internal successors, (140), 25 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:33,047 INFO L276 IsEmpty]: Start isEmpty. Operand 3513 states and 9853 transitions. [2021-10-13 22:36:33,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-10-13 22:36:33,050 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:36:33,050 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:36:33,078 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Ended with exit code 0 [2021-10-13 22:36:33,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2021-10-13 22:36:33,250 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:36:33,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:36:33,251 INFO L82 PathProgramCache]: Analyzing trace with hash 1287059495, now seen corresponding path program 116 times [2021-10-13 22:36:33,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:36:33,251 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26275112] [2021-10-13 22:36:33,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:36:33,251 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:36:33,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:36:33,438 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:33,439 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:36:33,439 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26275112] [2021-10-13 22:36:33,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26275112] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:33,439 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328476819] [2021-10-13 22:36:33,439 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:36:33,439 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:33,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:36:33,440 INFO L229 MonitoredProcess]: Starting monitored process 120 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:36:33,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Waiting until timeout for monitored process [2021-10-13 22:36:36,930 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:36:36,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:36:36,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 22:36:36,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:36:37,315 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:37,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328476819] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:37,315 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:36:37,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-10-13 22:36:37,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72491726] [2021-10-13 22:36:37,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 22:36:37,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:36:37,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 22:36:37,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2021-10-13 22:36:37,316 INFO L87 Difference]: Start difference. First operand 3513 states and 9853 transitions. Second operand has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:37,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:36:37,568 INFO L93 Difference]: Finished difference Result 5061 states and 13077 transitions. [2021-10-13 22:36:37,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 22:36:37,568 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-10-13 22:36:37,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:36:37,573 INFO L225 Difference]: With dead ends: 5061 [2021-10-13 22:36:37,573 INFO L226 Difference]: Without dead ends: 4791 [2021-10-13 22:36:37,573 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 291.7ms TimeCoverageRelationStatistics Valid=446, Invalid=1194, Unknown=0, NotChecked=0, Total=1640 [2021-10-13 22:36:37,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4791 states. [2021-10-13 22:36:37,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4791 to 3528. [2021-10-13 22:36:37,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3528 states, 3527 states have (on average 2.8020981003685854) internal successors, (9883), 3527 states have internal predecessors, (9883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:37,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3528 states to 3528 states and 9883 transitions. [2021-10-13 22:36:37,611 INFO L78 Accepts]: Start accepts. Automaton has 3528 states and 9883 transitions. Word has length 110 [2021-10-13 22:36:37,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:36:37,611 INFO L470 AbstractCegarLoop]: Abstraction has 3528 states and 9883 transitions. [2021-10-13 22:36:37,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:37,612 INFO L276 IsEmpty]: Start isEmpty. Operand 3528 states and 9883 transitions. [2021-10-13 22:36:37,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-10-13 22:36:37,615 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:36:37,615 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:36:37,646 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Ended with exit code 0 [2021-10-13 22:36:37,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 120 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2021-10-13 22:36:37,816 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:36:37,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:36:37,816 INFO L82 PathProgramCache]: Analyzing trace with hash -497853161, now seen corresponding path program 117 times [2021-10-13 22:36:37,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:36:37,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653845829] [2021-10-13 22:36:37,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:36:37,816 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:36:37,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:36:38,049 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:38,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:36:38,049 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653845829] [2021-10-13 22:36:38,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653845829] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:38,050 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197746499] [2021-10-13 22:36:38,050 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:36:38,050 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:38,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:36:38,050 INFO L229 MonitoredProcess]: Starting monitored process 121 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:36:38,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Waiting until timeout for monitored process [2021-10-13 22:36:41,469 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-10-13 22:36:41,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:36:41,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 22:36:41,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:36:41,844 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:41,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197746499] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:41,845 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:36:41,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2021-10-13 22:36:41,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868076806] [2021-10-13 22:36:41,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:36:41,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:36:41,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:36:41,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:36:41,845 INFO L87 Difference]: Start difference. First operand 3528 states and 9883 transitions. Second operand has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:42,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:36:42,188 INFO L93 Difference]: Finished difference Result 4946 states and 12847 transitions. [2021-10-13 22:36:42,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-13 22:36:42,188 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-10-13 22:36:42,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:36:42,193 INFO L225 Difference]: With dead ends: 4946 [2021-10-13 22:36:42,194 INFO L226 Difference]: Without dead ends: 4676 [2021-10-13 22:36:42,194 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 380.0ms TimeCoverageRelationStatistics Valid=507, Invalid=1473, Unknown=0, NotChecked=0, Total=1980 [2021-10-13 22:36:42,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4676 states. [2021-10-13 22:36:42,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4676 to 3528. [2021-10-13 22:36:42,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3528 states, 3527 states have (on average 2.8020981003685854) internal successors, (9883), 3527 states have internal predecessors, (9883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:42,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3528 states to 3528 states and 9883 transitions. [2021-10-13 22:36:42,231 INFO L78 Accepts]: Start accepts. Automaton has 3528 states and 9883 transitions. Word has length 110 [2021-10-13 22:36:42,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:36:42,231 INFO L470 AbstractCegarLoop]: Abstraction has 3528 states and 9883 transitions. [2021-10-13 22:36:42,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:42,231 INFO L276 IsEmpty]: Start isEmpty. Operand 3528 states and 9883 transitions. [2021-10-13 22:36:42,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-10-13 22:36:42,234 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:36:42,234 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:36:42,263 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Ended with exit code 0 [2021-10-13 22:36:42,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 121 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2021-10-13 22:36:42,435 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:36:42,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:36:42,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1084378149, now seen corresponding path program 118 times [2021-10-13 22:36:42,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:36:42,435 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674646665] [2021-10-13 22:36:42,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:36:42,435 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:36:42,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:36:42,614 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:42,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:36:42,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674646665] [2021-10-13 22:36:42,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674646665] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:42,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566626254] [2021-10-13 22:36:42,615 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:36:42,615 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:42,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:36:42,615 INFO L229 MonitoredProcess]: Starting monitored process 122 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:36:42,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Waiting until timeout for monitored process [2021-10-13 22:36:46,086 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:36:46,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:36:46,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 22:36:46,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:36:46,499 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:46,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566626254] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:46,499 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:36:46,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-10-13 22:36:46,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050053348] [2021-10-13 22:36:46,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 22:36:46,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:36:46,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 22:36:46,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2021-10-13 22:36:46,500 INFO L87 Difference]: Start difference. First operand 3528 states and 9883 transitions. Second operand has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:46,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:36:46,769 INFO L93 Difference]: Finished difference Result 4921 states and 12797 transitions. [2021-10-13 22:36:46,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-13 22:36:46,769 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-10-13 22:36:46,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:36:46,774 INFO L225 Difference]: With dead ends: 4921 [2021-10-13 22:36:46,774 INFO L226 Difference]: Without dead ends: 4651 [2021-10-13 22:36:46,775 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 298.2ms TimeCoverageRelationStatistics Valid=454, Invalid=1352, Unknown=0, NotChecked=0, Total=1806 [2021-10-13 22:36:46,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4651 states. [2021-10-13 22:36:46,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4651 to 3528. [2021-10-13 22:36:46,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3528 states, 3527 states have (on average 2.8020981003685854) internal successors, (9883), 3527 states have internal predecessors, (9883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:46,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3528 states to 3528 states and 9883 transitions. [2021-10-13 22:36:46,812 INFO L78 Accepts]: Start accepts. Automaton has 3528 states and 9883 transitions. Word has length 110 [2021-10-13 22:36:46,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:36:46,812 INFO L470 AbstractCegarLoop]: Abstraction has 3528 states and 9883 transitions. [2021-10-13 22:36:46,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:46,813 INFO L276 IsEmpty]: Start isEmpty. Operand 3528 states and 9883 transitions. [2021-10-13 22:36:46,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-10-13 22:36:46,816 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:36:46,816 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:36:46,845 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Ended with exit code 0 [2021-10-13 22:36:47,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126,122 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:47,017 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:36:47,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:36:47,018 INFO L82 PathProgramCache]: Analyzing trace with hash 77274389, now seen corresponding path program 119 times [2021-10-13 22:36:47,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:36:47,018 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318345493] [2021-10-13 22:36:47,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:36:47,018 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:36:47,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:36:47,211 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:47,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:36:47,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318345493] [2021-10-13 22:36:47,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318345493] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:47,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316636709] [2021-10-13 22:36:47,212 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:36:47,212 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:47,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:36:47,213 INFO L229 MonitoredProcess]: Starting monitored process 123 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:36:47,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Waiting until timeout for monitored process [2021-10-13 22:36:50,766 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-10-13 22:36:50,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:36:50,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 22:36:50,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:36:51,138 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:51,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316636709] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:51,138 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:36:51,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2021-10-13 22:36:51,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719415380] [2021-10-13 22:36:51,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:36:51,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:36:51,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:36:51,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:36:51,142 INFO L87 Difference]: Start difference. First operand 3528 states and 9883 transitions. Second operand has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:51,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:36:51,495 INFO L93 Difference]: Finished difference Result 4871 states and 12697 transitions. [2021-10-13 22:36:51,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-13 22:36:51,495 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-10-13 22:36:51,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:36:51,501 INFO L225 Difference]: With dead ends: 4871 [2021-10-13 22:36:51,501 INFO L226 Difference]: Without dead ends: 4601 [2021-10-13 22:36:51,501 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 375.3ms TimeCoverageRelationStatistics Valid=523, Invalid=1639, Unknown=0, NotChecked=0, Total=2162 [2021-10-13 22:36:51,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4601 states. [2021-10-13 22:36:51,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4601 to 3528. [2021-10-13 22:36:51,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3528 states, 3527 states have (on average 2.8020981003685854) internal successors, (9883), 3527 states have internal predecessors, (9883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:51,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3528 states to 3528 states and 9883 transitions. [2021-10-13 22:36:51,540 INFO L78 Accepts]: Start accepts. Automaton has 3528 states and 9883 transitions. Word has length 110 [2021-10-13 22:36:51,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:36:51,540 INFO L470 AbstractCegarLoop]: Abstraction has 3528 states and 9883 transitions. [2021-10-13 22:36:51,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:51,540 INFO L276 IsEmpty]: Start isEmpty. Operand 3528 states and 9883 transitions. [2021-10-13 22:36:51,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-10-13 22:36:51,543 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:36:51,543 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:36:51,572 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Ended with exit code 0 [2021-10-13 22:36:51,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127,123 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:51,745 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:36:51,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:36:51,745 INFO L82 PathProgramCache]: Analyzing trace with hash 212395427, now seen corresponding path program 120 times [2021-10-13 22:36:51,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:36:51,745 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479245568] [2021-10-13 22:36:51,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:36:51,745 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:36:51,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:36:51,918 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:51,918 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:36:51,919 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479245568] [2021-10-13 22:36:51,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479245568] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:51,919 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203571096] [2021-10-13 22:36:51,919 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:36:51,919 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:51,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:36:51,920 INFO L229 MonitoredProcess]: Starting monitored process 124 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:36:51,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Waiting until timeout for monitored process [2021-10-13 22:36:55,553 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-10-13 22:36:55,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:36:55,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 22:36:55,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:36:55,886 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:55,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203571096] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:55,886 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:36:55,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-10-13 22:36:55,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287686518] [2021-10-13 22:36:55,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 22:36:55,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:36:55,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 22:36:55,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2021-10-13 22:36:55,887 INFO L87 Difference]: Start difference. First operand 3528 states and 9883 transitions. Second operand has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:56,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:36:56,187 INFO L93 Difference]: Finished difference Result 4821 states and 12597 transitions. [2021-10-13 22:36:56,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-13 22:36:56,188 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-10-13 22:36:56,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:36:56,193 INFO L225 Difference]: With dead ends: 4821 [2021-10-13 22:36:56,193 INFO L226 Difference]: Without dead ends: 4551 [2021-10-13 22:36:56,194 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 387 ImplicationChecksByTransitivity, 315.3ms TimeCoverageRelationStatistics Valid=478, Invalid=1502, Unknown=0, NotChecked=0, Total=1980 [2021-10-13 22:36:56,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4551 states. [2021-10-13 22:36:56,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4551 to 3528. [2021-10-13 22:36:56,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3528 states, 3527 states have (on average 2.8020981003685854) internal successors, (9883), 3527 states have internal predecessors, (9883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:56,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3528 states to 3528 states and 9883 transitions. [2021-10-13 22:36:56,231 INFO L78 Accepts]: Start accepts. Automaton has 3528 states and 9883 transitions. Word has length 110 [2021-10-13 22:36:56,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:36:56,231 INFO L470 AbstractCegarLoop]: Abstraction has 3528 states and 9883 transitions. [2021-10-13 22:36:56,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:56,231 INFO L276 IsEmpty]: Start isEmpty. Operand 3528 states and 9883 transitions. [2021-10-13 22:36:56,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-10-13 22:36:56,234 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:36:56,234 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:36:56,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Forceful destruction successful, exit code 0 [2021-10-13 22:36:56,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128,124 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:56,435 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:36:56,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:36:56,435 INFO L82 PathProgramCache]: Analyzing trace with hash 123019923, now seen corresponding path program 121 times [2021-10-13 22:36:56,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:36:56,435 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920909293] [2021-10-13 22:36:56,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:36:56,435 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:36:56,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:36:56,656 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:56,656 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:36:56,656 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920909293] [2021-10-13 22:36:56,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920909293] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:56,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100039730] [2021-10-13 22:36:56,657 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:36:56,657 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:56,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:36:56,657 INFO L229 MonitoredProcess]: Starting monitored process 125 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:36:56,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Waiting until timeout for monitored process [2021-10-13 22:37:00,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:37:00,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 22:37:00,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:37:00,677 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:00,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100039730] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:00,678 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:37:00,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2021-10-13 22:37:00,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323952640] [2021-10-13 22:37:00,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:37:00,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:37:00,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:37:00,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:37:00,678 INFO L87 Difference]: Start difference. First operand 3528 states and 9883 transitions. Second operand has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:01,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:37:01,085 INFO L93 Difference]: Finished difference Result 4771 states and 12497 transitions. [2021-10-13 22:37:01,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-13 22:37:01,085 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-10-13 22:37:01,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:37:01,091 INFO L225 Difference]: With dead ends: 4771 [2021-10-13 22:37:01,091 INFO L226 Difference]: Without dead ends: 4501 [2021-10-13 22:37:01,091 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 395.7ms TimeCoverageRelationStatistics Valid=555, Invalid=1797, Unknown=0, NotChecked=0, Total=2352 [2021-10-13 22:37:01,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4501 states. [2021-10-13 22:37:01,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4501 to 3528. [2021-10-13 22:37:01,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3528 states, 3527 states have (on average 2.8020981003685854) internal successors, (9883), 3527 states have internal predecessors, (9883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:01,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3528 states to 3528 states and 9883 transitions. [2021-10-13 22:37:01,128 INFO L78 Accepts]: Start accepts. Automaton has 3528 states and 9883 transitions. Word has length 110 [2021-10-13 22:37:01,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:37:01,128 INFO L470 AbstractCegarLoop]: Abstraction has 3528 states and 9883 transitions. [2021-10-13 22:37:01,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:01,128 INFO L276 IsEmpty]: Start isEmpty. Operand 3528 states and 9883 transitions. [2021-10-13 22:37:01,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-10-13 22:37:01,131 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:37:01,131 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:37:01,161 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Forceful destruction successful, exit code 0 [2021-10-13 22:37:01,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 125 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable129 [2021-10-13 22:37:01,332 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:37:01,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:37:01,332 INFO L82 PathProgramCache]: Analyzing trace with hash -409230175, now seen corresponding path program 122 times [2021-10-13 22:37:01,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:37:01,332 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139574756] [2021-10-13 22:37:01,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:37:01,332 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:37:01,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:37:01,497 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:01,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:37:01,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139574756] [2021-10-13 22:37:01,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139574756] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:01,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406666987] [2021-10-13 22:37:01,497 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:37:01,497 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:01,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:37:01,498 INFO L229 MonitoredProcess]: Starting monitored process 126 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:37:01,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Waiting until timeout for monitored process [2021-10-13 22:37:05,196 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:37:05,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:37:05,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 22:37:05,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:37:05,533 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:05,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406666987] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:05,533 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:37:05,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-10-13 22:37:05,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473511845] [2021-10-13 22:37:05,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 22:37:05,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:37:05,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 22:37:05,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2021-10-13 22:37:05,534 INFO L87 Difference]: Start difference. First operand 3528 states and 9883 transitions. Second operand has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:05,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:37:05,865 INFO L93 Difference]: Finished difference Result 4721 states and 12397 transitions. [2021-10-13 22:37:05,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-13 22:37:05,866 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-10-13 22:37:05,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:37:05,871 INFO L225 Difference]: With dead ends: 4721 [2021-10-13 22:37:05,871 INFO L226 Difference]: Without dead ends: 4451 [2021-10-13 22:37:05,872 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 332.2ms TimeCoverageRelationStatistics Valid=518, Invalid=1644, Unknown=0, NotChecked=0, Total=2162 [2021-10-13 22:37:05,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4451 states. [2021-10-13 22:37:05,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4451 to 3528. [2021-10-13 22:37:05,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3528 states, 3527 states have (on average 2.8020981003685854) internal successors, (9883), 3527 states have internal predecessors, (9883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:05,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3528 states to 3528 states and 9883 transitions. [2021-10-13 22:37:05,908 INFO L78 Accepts]: Start accepts. Automaton has 3528 states and 9883 transitions. Word has length 110 [2021-10-13 22:37:05,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:37:05,909 INFO L470 AbstractCegarLoop]: Abstraction has 3528 states and 9883 transitions. [2021-10-13 22:37:05,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:05,909 INFO L276 IsEmpty]: Start isEmpty. Operand 3528 states and 9883 transitions. [2021-10-13 22:37:05,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-10-13 22:37:05,912 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:37:05,912 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:37:05,941 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Ended with exit code 0 [2021-10-13 22:37:06,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,126 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:06,113 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:37:06,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:37:06,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1376931217, now seen corresponding path program 123 times [2021-10-13 22:37:06,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:37:06,113 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501857088] [2021-10-13 22:37:06,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:37:06,113 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:37:06,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:37:06,311 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:06,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:37:06,312 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501857088] [2021-10-13 22:37:06,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501857088] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:06,312 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116371555] [2021-10-13 22:37:06,312 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:37:06,312 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:06,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:37:06,313 INFO L229 MonitoredProcess]: Starting monitored process 127 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:37:06,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Waiting until timeout for monitored process [2021-10-13 22:37:10,044 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-10-13 22:37:10,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:37:10,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 22:37:10,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:37:10,374 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:10,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2116371555] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:10,375 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:37:10,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2021-10-13 22:37:10,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374719371] [2021-10-13 22:37:10,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:37:10,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:37:10,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:37:10,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:37:10,375 INFO L87 Difference]: Start difference. First operand 3528 states and 9883 transitions. Second operand has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:10,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:37:10,827 INFO L93 Difference]: Finished difference Result 4671 states and 12297 transitions. [2021-10-13 22:37:10,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-13 22:37:10,828 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-10-13 22:37:10,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:37:10,832 INFO L225 Difference]: With dead ends: 4671 [2021-10-13 22:37:10,832 INFO L226 Difference]: Without dead ends: 4401 [2021-10-13 22:37:10,832 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 426.2ms TimeCoverageRelationStatistics Valid=603, Invalid=1947, Unknown=0, NotChecked=0, Total=2550 [2021-10-13 22:37:10,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4401 states. [2021-10-13 22:37:10,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4401 to 3528. [2021-10-13 22:37:10,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3528 states, 3527 states have (on average 2.8020981003685854) internal successors, (9883), 3527 states have internal predecessors, (9883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:10,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3528 states to 3528 states and 9883 transitions. [2021-10-13 22:37:10,866 INFO L78 Accepts]: Start accepts. Automaton has 3528 states and 9883 transitions. Word has length 110 [2021-10-13 22:37:10,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:37:10,866 INFO L470 AbstractCegarLoop]: Abstraction has 3528 states and 9883 transitions. [2021-10-13 22:37:10,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:10,867 INFO L276 IsEmpty]: Start isEmpty. Operand 3528 states and 9883 transitions. [2021-10-13 22:37:10,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-10-13 22:37:10,870 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:37:10,870 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:37:10,900 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Ended with exit code 0 [2021-10-13 22:37:11,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,127 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:11,070 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:37:11,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:37:11,070 INFO L82 PathProgramCache]: Analyzing trace with hash 1306749215, now seen corresponding path program 124 times [2021-10-13 22:37:11,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:37:11,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70448341] [2021-10-13 22:37:11,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:37:11,071 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:37:11,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:37:11,301 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:11,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:37:11,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70448341] [2021-10-13 22:37:11,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70448341] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:11,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954832271] [2021-10-13 22:37:11,301 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:37:11,301 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:11,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:37:11,303 INFO L229 MonitoredProcess]: Starting monitored process 128 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:37:11,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Waiting until timeout for monitored process [2021-10-13 22:37:15,082 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:37:15,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:37:15,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 22:37:15,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:37:15,369 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:15,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [954832271] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:15,369 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:37:15,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-10-13 22:37:15,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969712636] [2021-10-13 22:37:15,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 22:37:15,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:37:15,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 22:37:15,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2021-10-13 22:37:15,370 INFO L87 Difference]: Start difference. First operand 3528 states and 9883 transitions. Second operand has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:15,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:37:15,730 INFO L93 Difference]: Finished difference Result 4621 states and 12197 transitions. [2021-10-13 22:37:15,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-13 22:37:15,730 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-10-13 22:37:15,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:37:15,735 INFO L225 Difference]: With dead ends: 4621 [2021-10-13 22:37:15,736 INFO L226 Difference]: Without dead ends: 4351 [2021-10-13 22:37:15,736 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 517 ImplicationChecksByTransitivity, 352.9ms TimeCoverageRelationStatistics Valid=574, Invalid=1778, Unknown=0, NotChecked=0, Total=2352 [2021-10-13 22:37:15,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4351 states. [2021-10-13 22:37:15,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4351 to 3528. [2021-10-13 22:37:15,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3528 states, 3527 states have (on average 2.8020981003685854) internal successors, (9883), 3527 states have internal predecessors, (9883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:15,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3528 states to 3528 states and 9883 transitions. [2021-10-13 22:37:15,772 INFO L78 Accepts]: Start accepts. Automaton has 3528 states and 9883 transitions. Word has length 110 [2021-10-13 22:37:15,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:37:15,772 INFO L470 AbstractCegarLoop]: Abstraction has 3528 states and 9883 transitions. [2021-10-13 22:37:15,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:15,772 INFO L276 IsEmpty]: Start isEmpty. Operand 3528 states and 9883 transitions. [2021-10-13 22:37:15,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-10-13 22:37:15,775 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:37:15,775 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:37:15,804 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Ended with exit code 0 [2021-10-13 22:37:15,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,128 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:15,976 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:37:15,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:37:15,976 INFO L82 PathProgramCache]: Analyzing trace with hash -2114224625, now seen corresponding path program 125 times [2021-10-13 22:37:15,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:37:15,976 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460622331] [2021-10-13 22:37:15,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:37:15,977 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:37:16,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:37:16,138 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:16,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:37:16,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460622331] [2021-10-13 22:37:16,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460622331] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:16,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143415424] [2021-10-13 22:37:16,138 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:37:16,139 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:16,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:37:16,140 INFO L229 MonitoredProcess]: Starting monitored process 129 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:37:16,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Waiting until timeout for monitored process [2021-10-13 22:37:19,964 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-10-13 22:37:19,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:37:19,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 22:37:19,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:37:20,255 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:20,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143415424] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:20,256 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:37:20,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2021-10-13 22:37:20,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076252678] [2021-10-13 22:37:20,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:37:20,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:37:20,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:37:20,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:37:20,256 INFO L87 Difference]: Start difference. First operand 3528 states and 9883 transitions. Second operand has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:20,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:37:20,732 INFO L93 Difference]: Finished difference Result 4571 states and 12097 transitions. [2021-10-13 22:37:20,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-13 22:37:20,732 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-10-13 22:37:20,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:37:20,737 INFO L225 Difference]: With dead ends: 4571 [2021-10-13 22:37:20,737 INFO L226 Difference]: Without dead ends: 4301 [2021-10-13 22:37:20,738 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 605 ImplicationChecksByTransitivity, 456.2ms TimeCoverageRelationStatistics Valid=667, Invalid=2089, Unknown=0, NotChecked=0, Total=2756 [2021-10-13 22:37:20,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4301 states. [2021-10-13 22:37:20,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4301 to 3528. [2021-10-13 22:37:20,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3528 states, 3527 states have (on average 2.8020981003685854) internal successors, (9883), 3527 states have internal predecessors, (9883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:20,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3528 states to 3528 states and 9883 transitions. [2021-10-13 22:37:20,774 INFO L78 Accepts]: Start accepts. Automaton has 3528 states and 9883 transitions. Word has length 110 [2021-10-13 22:37:20,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:37:20,774 INFO L470 AbstractCegarLoop]: Abstraction has 3528 states and 9883 transitions. [2021-10-13 22:37:20,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:20,774 INFO L276 IsEmpty]: Start isEmpty. Operand 3528 states and 9883 transitions. [2021-10-13 22:37:20,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-10-13 22:37:20,777 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:37:20,777 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:37:20,809 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Forceful destruction successful, exit code 0 [2021-10-13 22:37:20,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 129 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2021-10-13 22:37:20,978 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:37:20,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:37:20,978 INFO L82 PathProgramCache]: Analyzing trace with hash -1618930915, now seen corresponding path program 126 times [2021-10-13 22:37:20,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:37:20,978 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136513182] [2021-10-13 22:37:20,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:37:20,978 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:37:21,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:37:21,135 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:21,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:37:21,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136513182] [2021-10-13 22:37:21,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136513182] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:21,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196648521] [2021-10-13 22:37:21,136 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:37:21,136 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:21,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:37:21,137 INFO L229 MonitoredProcess]: Starting monitored process 130 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:37:21,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Waiting until timeout for monitored process [2021-10-13 22:37:25,026 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-10-13 22:37:25,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:37:25,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 22:37:25,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:37:25,291 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:25,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196648521] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:25,291 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:37:25,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-10-13 22:37:25,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485131065] [2021-10-13 22:37:25,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 22:37:25,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:37:25,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 22:37:25,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2021-10-13 22:37:25,292 INFO L87 Difference]: Start difference. First operand 3528 states and 9883 transitions. Second operand has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:25,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:37:25,686 INFO L93 Difference]: Finished difference Result 4521 states and 11997 transitions. [2021-10-13 22:37:25,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-13 22:37:25,686 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-10-13 22:37:25,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:37:25,691 INFO L225 Difference]: With dead ends: 4521 [2021-10-13 22:37:25,691 INFO L226 Difference]: Without dead ends: 4251 [2021-10-13 22:37:25,692 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 588 ImplicationChecksByTransitivity, 372.0ms TimeCoverageRelationStatistics Valid=646, Invalid=1904, Unknown=0, NotChecked=0, Total=2550 [2021-10-13 22:37:25,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4251 states. [2021-10-13 22:37:25,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4251 to 3528. [2021-10-13 22:37:25,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3528 states, 3527 states have (on average 2.8020981003685854) internal successors, (9883), 3527 states have internal predecessors, (9883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:25,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3528 states to 3528 states and 9883 transitions. [2021-10-13 22:37:25,728 INFO L78 Accepts]: Start accepts. Automaton has 3528 states and 9883 transitions. Word has length 110 [2021-10-13 22:37:25,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:37:25,728 INFO L470 AbstractCegarLoop]: Abstraction has 3528 states and 9883 transitions. [2021-10-13 22:37:25,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:25,728 INFO L276 IsEmpty]: Start isEmpty. Operand 3528 states and 9883 transitions. [2021-10-13 22:37:25,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-10-13 22:37:25,731 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:37:25,731 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:37:25,761 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Ended with exit code 0 [2021-10-13 22:37:25,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2021-10-13 22:37:25,932 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:37:25,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:37:25,932 INFO L82 PathProgramCache]: Analyzing trace with hash 131175437, now seen corresponding path program 127 times [2021-10-13 22:37:25,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:37:25,932 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32301057] [2021-10-13 22:37:25,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:37:25,932 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:37:26,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:37:26,148 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:26,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:37:26,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32301057] [2021-10-13 22:37:26,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32301057] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:26,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995277253] [2021-10-13 22:37:26,148 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:37:26,148 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:26,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:37:26,149 INFO L229 MonitoredProcess]: Starting monitored process 131 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:37:26,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Waiting until timeout for monitored process [2021-10-13 22:37:29,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:37:29,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 22:37:29,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:37:30,260 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:30,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995277253] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:30,260 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:37:30,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2021-10-13 22:37:30,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132521950] [2021-10-13 22:37:30,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:37:30,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:37:30,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:37:30,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:37:30,261 INFO L87 Difference]: Start difference. First operand 3528 states and 9883 transitions. Second operand has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:30,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:37:30,821 INFO L93 Difference]: Finished difference Result 4471 states and 11897 transitions. [2021-10-13 22:37:30,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-13 22:37:30,821 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-10-13 22:37:30,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:37:30,826 INFO L225 Difference]: With dead ends: 4471 [2021-10-13 22:37:30,826 INFO L226 Difference]: Without dead ends: 4201 [2021-10-13 22:37:30,826 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 683 ImplicationChecksByTransitivity, 487.6ms TimeCoverageRelationStatistics Valid=747, Invalid=2223, Unknown=0, NotChecked=0, Total=2970 [2021-10-13 22:37:30,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4201 states. [2021-10-13 22:37:30,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4201 to 3528. [2021-10-13 22:37:30,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3528 states, 3527 states have (on average 2.8020981003685854) internal successors, (9883), 3527 states have internal predecessors, (9883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:30,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3528 states to 3528 states and 9883 transitions. [2021-10-13 22:37:30,859 INFO L78 Accepts]: Start accepts. Automaton has 3528 states and 9883 transitions. Word has length 110 [2021-10-13 22:37:30,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:37:30,859 INFO L470 AbstractCegarLoop]: Abstraction has 3528 states and 9883 transitions. [2021-10-13 22:37:30,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:30,860 INFO L276 IsEmpty]: Start isEmpty. Operand 3528 states and 9883 transitions. [2021-10-13 22:37:30,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-10-13 22:37:30,862 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:37:30,863 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:37:30,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Forceful destruction successful, exit code 0 [2021-10-13 22:37:31,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 131 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2021-10-13 22:37:31,063 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:37:31,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:37:31,063 INFO L82 PathProgramCache]: Analyzing trace with hash 1041072795, now seen corresponding path program 128 times [2021-10-13 22:37:31,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:37:31,063 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491897704] [2021-10-13 22:37:31,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:37:31,064 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:37:31,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:37:31,222 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:31,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:37:31,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491897704] [2021-10-13 22:37:31,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491897704] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:31,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7076715] [2021-10-13 22:37:31,223 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:37:31,223 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:31,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:37:31,224 INFO L229 MonitoredProcess]: Starting monitored process 132 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:37:31,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Waiting until timeout for monitored process [2021-10-13 22:37:35,153 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:37:35,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:37:35,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 22:37:35,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:37:35,397 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:35,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [7076715] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:35,397 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:37:35,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-10-13 22:37:35,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523815018] [2021-10-13 22:37:35,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 22:37:35,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:37:35,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 22:37:35,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2021-10-13 22:37:35,398 INFO L87 Difference]: Start difference. First operand 3528 states and 9883 transitions. Second operand has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:35,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:37:35,833 INFO L93 Difference]: Finished difference Result 4421 states and 11797 transitions. [2021-10-13 22:37:35,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-13 22:37:35,834 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-10-13 22:37:35,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:37:35,839 INFO L225 Difference]: With dead ends: 4421 [2021-10-13 22:37:35,839 INFO L226 Difference]: Without dead ends: 4151 [2021-10-13 22:37:35,839 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 663 ImplicationChecksByTransitivity, 396.7ms TimeCoverageRelationStatistics Valid=734, Invalid=2022, Unknown=0, NotChecked=0, Total=2756 [2021-10-13 22:37:35,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4151 states. [2021-10-13 22:37:35,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4151 to 3528. [2021-10-13 22:37:35,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3528 states, 3527 states have (on average 2.8020981003685854) internal successors, (9883), 3527 states have internal predecessors, (9883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:35,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3528 states to 3528 states and 9883 transitions. [2021-10-13 22:37:35,875 INFO L78 Accepts]: Start accepts. Automaton has 3528 states and 9883 transitions. Word has length 110 [2021-10-13 22:37:35,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:37:35,875 INFO L470 AbstractCegarLoop]: Abstraction has 3528 states and 9883 transitions. [2021-10-13 22:37:35,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:35,875 INFO L276 IsEmpty]: Start isEmpty. Operand 3528 states and 9883 transitions. [2021-10-13 22:37:35,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-10-13 22:37:35,878 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:37:35,878 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:37:35,908 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Ended with exit code 0 [2021-10-13 22:37:36,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 132 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2021-10-13 22:37:36,079 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:37:36,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:37:36,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1173188491, now seen corresponding path program 129 times [2021-10-13 22:37:36,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:37:36,079 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054663270] [2021-10-13 22:37:36,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:37:36,080 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:37:36,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:37:36,300 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:36,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:37:36,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054663270] [2021-10-13 22:37:36,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054663270] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:36,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360250710] [2021-10-13 22:37:36,300 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:37:36,300 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:36,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:37:36,301 INFO L229 MonitoredProcess]: Starting monitored process 133 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:37:36,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Waiting until timeout for monitored process [2021-10-13 22:37:40,306 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-10-13 22:37:40,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:37:40,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 22:37:40,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:37:40,579 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:40,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360250710] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:40,579 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:37:40,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2021-10-13 22:37:40,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849022880] [2021-10-13 22:37:40,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:37:40,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:37:40,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:37:40,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:37:40,580 INFO L87 Difference]: Start difference. First operand 3528 states and 9883 transitions. Second operand has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:41,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:37:41,191 INFO L93 Difference]: Finished difference Result 4431 states and 11847 transitions. [2021-10-13 22:37:41,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-13 22:37:41,192 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-10-13 22:37:41,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:37:41,196 INFO L225 Difference]: With dead ends: 4431 [2021-10-13 22:37:41,196 INFO L226 Difference]: Without dead ends: 4161 [2021-10-13 22:37:41,197 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 765 ImplicationChecksByTransitivity, 532.2ms TimeCoverageRelationStatistics Valid=843, Invalid=2349, Unknown=0, NotChecked=0, Total=3192 [2021-10-13 22:37:41,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4161 states. [2021-10-13 22:37:41,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4161 to 3528. [2021-10-13 22:37:41,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3528 states, 3527 states have (on average 2.8035157357527645) internal successors, (9888), 3527 states have internal predecessors, (9888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:41,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3528 states to 3528 states and 9888 transitions. [2021-10-13 22:37:41,231 INFO L78 Accepts]: Start accepts. Automaton has 3528 states and 9888 transitions. Word has length 110 [2021-10-13 22:37:41,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:37:41,232 INFO L470 AbstractCegarLoop]: Abstraction has 3528 states and 9888 transitions. [2021-10-13 22:37:41,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:41,232 INFO L276 IsEmpty]: Start isEmpty. Operand 3528 states and 9888 transitions. [2021-10-13 22:37:41,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-10-13 22:37:41,235 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:37:41,235 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:37:41,266 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Ended with exit code 0 [2021-10-13 22:37:41,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable137 [2021-10-13 22:37:41,435 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:37:41,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:37:41,435 INFO L82 PathProgramCache]: Analyzing trace with hash 716806041, now seen corresponding path program 130 times [2021-10-13 22:37:41,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:37:41,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913574123] [2021-10-13 22:37:41,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:37:41,436 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:37:41,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:37:41,584 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:41,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:37:41,584 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913574123] [2021-10-13 22:37:41,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913574123] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:41,584 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211317125] [2021-10-13 22:37:41,584 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:37:41,584 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:41,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:37:41,585 INFO L229 MonitoredProcess]: Starting monitored process 134 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:37:41,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Waiting until timeout for monitored process [2021-10-13 22:37:45,598 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:37:45,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:37:45,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 22:37:45,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:37:45,820 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:45,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211317125] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:45,820 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:37:45,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-10-13 22:37:45,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167538188] [2021-10-13 22:37:45,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 22:37:45,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:37:45,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 22:37:45,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2021-10-13 22:37:45,821 INFO L87 Difference]: Start difference. First operand 3528 states and 9888 transitions. Second operand has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:46,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:37:46,274 INFO L93 Difference]: Finished difference Result 5198 states and 14021 transitions. [2021-10-13 22:37:46,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-13 22:37:46,274 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-10-13 22:37:46,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:37:46,280 INFO L225 Difference]: With dead ends: 5198 [2021-10-13 22:37:46,280 INFO L226 Difference]: Without dead ends: 4928 [2021-10-13 22:37:46,281 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 741 ImplicationChecksByTransitivity, 413.2ms TimeCoverageRelationStatistics Valid=839, Invalid=2131, Unknown=0, NotChecked=0, Total=2970 [2021-10-13 22:37:46,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4928 states. [2021-10-13 22:37:46,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4928 to 3708. [2021-10-13 22:37:46,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3708 states, 3707 states have (on average 2.8181818181818183) internal successors, (10447), 3707 states have internal predecessors, (10447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:46,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3708 states to 3708 states and 10447 transitions. [2021-10-13 22:37:46,323 INFO L78 Accepts]: Start accepts. Automaton has 3708 states and 10447 transitions. Word has length 110 [2021-10-13 22:37:46,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:37:46,323 INFO L470 AbstractCegarLoop]: Abstraction has 3708 states and 10447 transitions. [2021-10-13 22:37:46,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:46,323 INFO L276 IsEmpty]: Start isEmpty. Operand 3708 states and 10447 transitions. [2021-10-13 22:37:46,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-10-13 22:37:46,326 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:37:46,326 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:37:46,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Forceful destruction successful, exit code 0 [2021-10-13 22:37:46,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138,134 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:46,527 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:37:46,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:37:46,527 INFO L82 PathProgramCache]: Analyzing trace with hash 782048331, now seen corresponding path program 131 times [2021-10-13 22:37:46,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:37:46,527 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468494725] [2021-10-13 22:37:46,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:37:46,527 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:37:46,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:37:46,728 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:46,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:37:46,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468494725] [2021-10-13 22:37:46,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468494725] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:46,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671494163] [2021-10-13 22:37:46,729 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:37:46,729 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:46,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:37:46,729 INFO L229 MonitoredProcess]: Starting monitored process 135 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:37:46,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Waiting until timeout for monitored process [2021-10-13 22:37:50,815 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-10-13 22:37:50,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:37:50,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 22:37:50,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:37:51,049 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:51,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671494163] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:51,050 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:37:51,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2021-10-13 22:37:51,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885592432] [2021-10-13 22:37:51,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:37:51,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:37:51,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:37:51,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:37:51,050 INFO L87 Difference]: Start difference. First operand 3708 states and 10447 transitions. Second operand has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:51,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:37:51,678 INFO L93 Difference]: Finished difference Result 5021 states and 13521 transitions. [2021-10-13 22:37:51,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-13 22:37:51,678 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-10-13 22:37:51,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:37:51,684 INFO L225 Difference]: With dead ends: 5021 [2021-10-13 22:37:51,684 INFO L226 Difference]: Without dead ends: 4446 [2021-10-13 22:37:51,685 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 966 ImplicationChecksByTransitivity, 589.2ms TimeCoverageRelationStatistics Valid=997, Invalid=2785, Unknown=0, NotChecked=0, Total=3782 [2021-10-13 22:37:51,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4446 states. [2021-10-13 22:37:51,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4446 to 2603. [2021-10-13 22:37:51,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2603 states, 2602 states have (on average 2.735588009223674) internal successors, (7118), 2602 states have internal predecessors, (7118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:51,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2603 states to 2603 states and 7118 transitions. [2021-10-13 22:37:51,736 INFO L78 Accepts]: Start accepts. Automaton has 2603 states and 7118 transitions. Word has length 110 [2021-10-13 22:37:51,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:37:51,736 INFO L470 AbstractCegarLoop]: Abstraction has 2603 states and 7118 transitions. [2021-10-13 22:37:51,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:51,737 INFO L276 IsEmpty]: Start isEmpty. Operand 2603 states and 7118 transitions. [2021-10-13 22:37:51,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-10-13 22:37:51,739 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:37:51,739 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:37:51,771 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Ended with exit code 0 [2021-10-13 22:37:51,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 135 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable139 [2021-10-13 22:37:51,955 INFO L402 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:37:51,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:37:51,956 INFO L82 PathProgramCache]: Analyzing trace with hash -172218370, now seen corresponding path program 132 times [2021-10-13 22:37:51,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:37:51,956 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375934253] [2021-10-13 22:37:51,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:37:51,956 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:37:51,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:37:52,156 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:52,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:37:52,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375934253] [2021-10-13 22:37:52,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375934253] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:52,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448267424] [2021-10-13 22:37:52,156 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:37:52,156 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:52,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:37:52,157 INFO L229 MonitoredProcess]: Starting monitored process 136 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:37:52,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Waiting until timeout for monitored process [2021-10-13 22:37:56,243 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-10-13 22:37:56,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:37:56,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 22:37:56,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:37:56,615 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:56,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448267424] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:56,615 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:37:56,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2021-10-13 22:37:56,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494710122] [2021-10-13 22:37:56,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 22:37:56,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:37:56,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 22:37:56,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2021-10-13 22:37:56,616 INFO L87 Difference]: Start difference. First operand 2603 states and 7118 transitions. Second operand has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 22 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:56,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:37:56,897 INFO L93 Difference]: Finished difference Result 3821 states and 9757 transitions. [2021-10-13 22:37:56,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-13 22:37:56,898 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 22 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-10-13 22:37:56,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:37:56,902 INFO L225 Difference]: With dead ends: 3821 [2021-10-13 22:37:56,902 INFO L226 Difference]: Without dead ends: 3551 [2021-10-13 22:37:56,902 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 312.7ms TimeCoverageRelationStatistics Valid=479, Invalid=1413, Unknown=0, NotChecked=0, Total=1892 [2021-10-13 22:37:56,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3551 states. [2021-10-13 22:37:56,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3551 to 2678. [2021-10-13 22:37:56,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2678 states, 2677 states have (on average 2.742995890922675) internal successors, (7343), 2677 states have internal predecessors, (7343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:56,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2678 states to 2678 states and 7343 transitions. [2021-10-13 22:37:56,929 INFO L78 Accepts]: Start accepts. Automaton has 2678 states and 7343 transitions. Word has length 115 [2021-10-13 22:37:56,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:37:56,929 INFO L470 AbstractCegarLoop]: Abstraction has 2678 states and 7343 transitions. [2021-10-13 22:37:56,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 22 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:56,929 INFO L276 IsEmpty]: Start isEmpty. Operand 2678 states and 7343 transitions. [2021-10-13 22:37:56,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-10-13 22:37:56,931 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:37:56,932 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:37:56,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Forceful destruction successful, exit code 0 [2021-10-13 22:37:57,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140,136 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:57,132 INFO L402 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:37:57,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:37:57,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1957131026, now seen corresponding path program 133 times [2021-10-13 22:37:57,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:37:57,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914995539] [2021-10-13 22:37:57,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:37:57,133 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:37:57,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:37:57,343 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:57,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:37:57,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914995539] [2021-10-13 22:37:57,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914995539] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:57,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911094312] [2021-10-13 22:37:57,343 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:37:57,343 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:57,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:37:57,344 INFO L229 MonitoredProcess]: Starting monitored process 137 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:37:57,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Waiting until timeout for monitored process [2021-10-13 22:38:01,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:38:01,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 22:38:01,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:38:01,844 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:01,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911094312] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:01,844 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:38:01,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2021-10-13 22:38:01,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713659080] [2021-10-13 22:38:01,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:38:01,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:38:01,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:38:01,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:38:01,845 INFO L87 Difference]: Start difference. First operand 2678 states and 7343 transitions. Second operand has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:02,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:38:02,174 INFO L93 Difference]: Finished difference Result 4241 states and 10672 transitions. [2021-10-13 22:38:02,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-13 22:38:02,175 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-10-13 22:38:02,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:38:02,179 INFO L225 Difference]: With dead ends: 4241 [2021-10-13 22:38:02,179 INFO L226 Difference]: Without dead ends: 3971 [2021-10-13 22:38:02,180 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 409 ImplicationChecksByTransitivity, 364.8ms TimeCoverageRelationStatistics Valid=529, Invalid=1633, Unknown=0, NotChecked=0, Total=2162 [2021-10-13 22:38:02,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3971 states. [2021-10-13 22:38:02,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3971 to 2753. [2021-10-13 22:38:02,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2753 states, 2752 states have (on average 2.75) internal successors, (7568), 2752 states have internal predecessors, (7568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:02,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2753 states to 2753 states and 7568 transitions. [2021-10-13 22:38:02,210 INFO L78 Accepts]: Start accepts. Automaton has 2753 states and 7568 transitions. Word has length 115 [2021-10-13 22:38:02,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:38:02,210 INFO L470 AbstractCegarLoop]: Abstraction has 2753 states and 7568 transitions. [2021-10-13 22:38:02,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:02,210 INFO L276 IsEmpty]: Start isEmpty. Operand 2753 states and 7568 transitions. [2021-10-13 22:38:02,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-10-13 22:38:02,212 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:38:02,212 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:38:02,243 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Ended with exit code 0 [2021-10-13 22:38:02,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141,137 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:38:02,413 INFO L402 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:38:02,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:38:02,413 INFO L82 PathProgramCache]: Analyzing trace with hash -374899716, now seen corresponding path program 134 times [2021-10-13 22:38:02,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:38:02,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327908307] [2021-10-13 22:38:02,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:38:02,413 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:38:02,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:38:02,609 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:02,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:38:02,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327908307] [2021-10-13 22:38:02,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327908307] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:02,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522283407] [2021-10-13 22:38:02,609 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:38:02,609 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:38:02,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:38:02,610 INFO L229 MonitoredProcess]: Starting monitored process 138 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:38:02,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Waiting until timeout for monitored process [2021-10-13 22:38:06,777 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:38:06,777 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:38:06,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 22:38:06,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:38:07,129 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:07,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522283407] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:07,129 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:38:07,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2021-10-13 22:38:07,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932088263] [2021-10-13 22:38:07,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 22:38:07,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:38:07,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 22:38:07,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2021-10-13 22:38:07,130 INFO L87 Difference]: Start difference. First operand 2753 states and 7568 transitions. Second operand has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 22 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:07,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:38:07,454 INFO L93 Difference]: Finished difference Result 4271 states and 10807 transitions. [2021-10-13 22:38:07,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-13 22:38:07,455 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 22 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-10-13 22:38:07,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:38:07,460 INFO L225 Difference]: With dead ends: 4271 [2021-10-13 22:38:07,460 INFO L226 Difference]: Without dead ends: 4001 [2021-10-13 22:38:07,460 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 336.5ms TimeCoverageRelationStatistics Valid=531, Invalid=1631, Unknown=0, NotChecked=0, Total=2162 [2021-10-13 22:38:07,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4001 states. [2021-10-13 22:38:07,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4001 to 2828. [2021-10-13 22:38:07,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2828 states, 2827 states have (on average 2.75663247258578) internal successors, (7793), 2827 states have internal predecessors, (7793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:07,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2828 states to 2828 states and 7793 transitions. [2021-10-13 22:38:07,492 INFO L78 Accepts]: Start accepts. Automaton has 2828 states and 7793 transitions. Word has length 115 [2021-10-13 22:38:07,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:38:07,492 INFO L470 AbstractCegarLoop]: Abstraction has 2828 states and 7793 transitions. [2021-10-13 22:38:07,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 22 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:07,492 INFO L276 IsEmpty]: Start isEmpty. Operand 2828 states and 7793 transitions. [2021-10-13 22:38:07,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-10-13 22:38:07,494 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:38:07,495 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:38:07,525 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Ended with exit code 0 [2021-10-13 22:38:07,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142,138 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:38:07,695 INFO L402 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:38:07,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:38:07,695 INFO L82 PathProgramCache]: Analyzing trace with hash -1382003476, now seen corresponding path program 135 times [2021-10-13 22:38:07,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:38:07,695 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119484471] [2021-10-13 22:38:07,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:38:07,696 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:38:07,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:38:07,893 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:07,894 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:38:07,894 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119484471] [2021-10-13 22:38:07,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119484471] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:07,894 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219409784] [2021-10-13 22:38:07,894 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:38:07,894 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:38:07,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:38:07,895 INFO L229 MonitoredProcess]: Starting monitored process 139 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:38:07,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Waiting until timeout for monitored process [2021-10-13 22:38:12,116 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-10-13 22:38:12,116 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:38:12,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 22:38:12,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:38:12,466 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:12,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1219409784] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:12,466 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:38:12,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2021-10-13 22:38:12,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013161865] [2021-10-13 22:38:12,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:38:12,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:38:12,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:38:12,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:38:12,467 INFO L87 Difference]: Start difference. First operand 2828 states and 7793 transitions. Second operand has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:12,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:38:12,848 INFO L93 Difference]: Finished difference Result 4296 states and 10932 transitions. [2021-10-13 22:38:12,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-13 22:38:12,848 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-10-13 22:38:12,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:38:12,853 INFO L225 Difference]: With dead ends: 4296 [2021-10-13 22:38:12,853 INFO L226 Difference]: Without dead ends: 4026 [2021-10-13 22:38:12,854 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 389.8ms TimeCoverageRelationStatistics Valid=553, Invalid=1799, Unknown=0, NotChecked=0, Total=2352 [2021-10-13 22:38:12,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4026 states. [2021-10-13 22:38:12,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4026 to 2903. [2021-10-13 22:38:12,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2903 states, 2902 states have (on average 2.7629221226740177) internal successors, (8018), 2902 states have internal predecessors, (8018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:12,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2903 states to 2903 states and 8018 transitions. [2021-10-13 22:38:12,886 INFO L78 Accepts]: Start accepts. Automaton has 2903 states and 8018 transitions. Word has length 115 [2021-10-13 22:38:12,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:38:12,886 INFO L470 AbstractCegarLoop]: Abstraction has 2903 states and 8018 transitions. [2021-10-13 22:38:12,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:12,886 INFO L276 IsEmpty]: Start isEmpty. Operand 2903 states and 8018 transitions. [2021-10-13 22:38:12,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-10-13 22:38:12,888 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:38:12,889 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:38:12,920 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Forceful destruction successful, exit code 0 [2021-10-13 22:38:13,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143,139 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:38:13,089 INFO L402 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:38:13,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:38:13,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1246882438, now seen corresponding path program 136 times [2021-10-13 22:38:13,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:38:13,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549390086] [2021-10-13 22:38:13,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:38:13,089 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:38:13,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:38:13,274 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:13,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:38:13,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549390086] [2021-10-13 22:38:13,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549390086] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:13,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1397470441] [2021-10-13 22:38:13,275 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:38:13,275 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:38:13,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:38:13,276 INFO L229 MonitoredProcess]: Starting monitored process 140 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:38:13,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Waiting until timeout for monitored process [2021-10-13 22:38:17,537 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:38:17,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:38:17,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 22:38:17,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:38:17,865 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:17,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1397470441] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:17,865 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:38:17,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2021-10-13 22:38:17,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765641452] [2021-10-13 22:38:17,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 22:38:17,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:38:17,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 22:38:17,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2021-10-13 22:38:17,866 INFO L87 Difference]: Start difference. First operand 2903 states and 8018 transitions. Second operand has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 22 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:18,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:38:18,208 INFO L93 Difference]: Finished difference Result 4321 states and 11057 transitions. [2021-10-13 22:38:18,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-13 22:38:18,208 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 22 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-10-13 22:38:18,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:38:18,213 INFO L225 Difference]: With dead ends: 4321 [2021-10-13 22:38:18,213 INFO L226 Difference]: Without dead ends: 4051 [2021-10-13 22:38:18,214 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 521 ImplicationChecksByTransitivity, 344.5ms TimeCoverageRelationStatistics Valid=569, Invalid=1783, Unknown=0, NotChecked=0, Total=2352 [2021-10-13 22:38:18,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4051 states. [2021-10-13 22:38:18,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4051 to 2978. [2021-10-13 22:38:18,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2978 states, 2977 states have (on average 2.7688948605979173) internal successors, (8243), 2977 states have internal predecessors, (8243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:18,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2978 states to 2978 states and 8243 transitions. [2021-10-13 22:38:18,286 INFO L78 Accepts]: Start accepts. Automaton has 2978 states and 8243 transitions. Word has length 115 [2021-10-13 22:38:18,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:38:18,286 INFO L470 AbstractCegarLoop]: Abstraction has 2978 states and 8243 transitions. [2021-10-13 22:38:18,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 22 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:18,286 INFO L276 IsEmpty]: Start isEmpty. Operand 2978 states and 8243 transitions. [2021-10-13 22:38:18,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-10-13 22:38:18,288 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:38:18,288 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:38:18,320 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Forceful destruction successful, exit code 0 [2021-10-13 22:38:18,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 140 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable144 [2021-10-13 22:38:18,489 INFO L402 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:38:18,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:38:18,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1336257942, now seen corresponding path program 137 times [2021-10-13 22:38:18,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:38:18,489 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32984466] [2021-10-13 22:38:18,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:38:18,489 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:38:18,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:38:18,683 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:18,683 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:38:18,683 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32984466] [2021-10-13 22:38:18,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32984466] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:18,683 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524229525] [2021-10-13 22:38:18,683 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:38:18,683 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:38:18,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:38:18,684 INFO L229 MonitoredProcess]: Starting monitored process 141 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:38:18,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Waiting until timeout for monitored process [2021-10-13 22:38:22,988 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-10-13 22:38:22,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:38:22,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 22:38:22,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:38:23,331 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:23,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524229525] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:23,331 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:38:23,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2021-10-13 22:38:23,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056215317] [2021-10-13 22:38:23,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:38:23,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:38:23,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:38:23,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:38:23,332 INFO L87 Difference]: Start difference. First operand 2978 states and 8243 transitions. Second operand has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:23,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:38:23,766 INFO L93 Difference]: Finished difference Result 4346 states and 11182 transitions. [2021-10-13 22:38:23,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-13 22:38:23,766 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-10-13 22:38:23,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:38:23,771 INFO L225 Difference]: With dead ends: 4346 [2021-10-13 22:38:23,771 INFO L226 Difference]: Without dead ends: 4076 [2021-10-13 22:38:23,772 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 422.7ms TimeCoverageRelationStatistics Valid=593, Invalid=1957, Unknown=0, NotChecked=0, Total=2550 [2021-10-13 22:38:23,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4076 states. [2021-10-13 22:38:23,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4076 to 3053. [2021-10-13 22:38:23,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3053 states, 3052 states have (on average 2.7745740498034075) internal successors, (8468), 3052 states have internal predecessors, (8468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:23,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3053 states to 3053 states and 8468 transitions. [2021-10-13 22:38:23,806 INFO L78 Accepts]: Start accepts. Automaton has 3053 states and 8468 transitions. Word has length 115 [2021-10-13 22:38:23,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:38:23,807 INFO L470 AbstractCegarLoop]: Abstraction has 3053 states and 8468 transitions. [2021-10-13 22:38:23,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:23,807 INFO L276 IsEmpty]: Start isEmpty. Operand 3053 states and 8468 transitions. [2021-10-13 22:38:23,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-10-13 22:38:23,809 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:38:23,809 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:38:23,842 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Forceful destruction successful, exit code 0 [2021-10-13 22:38:24,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 141 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable145 [2021-10-13 22:38:24,015 INFO L402 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:38:24,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:38:24,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1868508040, now seen corresponding path program 138 times [2021-10-13 22:38:24,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:38:24,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38594782] [2021-10-13 22:38:24,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:38:24,016 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:38:24,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:38:24,234 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:24,234 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:38:24,234 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38594782] [2021-10-13 22:38:24,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38594782] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:24,234 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29376203] [2021-10-13 22:38:24,234 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:38:24,234 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:38:24,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:38:24,235 INFO L229 MonitoredProcess]: Starting monitored process 142 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:38:24,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Waiting until timeout for monitored process [2021-10-13 22:38:28,576 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-10-13 22:38:28,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:38:28,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 22:38:28,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:38:28,882 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:28,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29376203] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:28,882 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:38:28,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2021-10-13 22:38:28,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865948890] [2021-10-13 22:38:28,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 22:38:28,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:38:28,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 22:38:28,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2021-10-13 22:38:28,883 INFO L87 Difference]: Start difference. First operand 3053 states and 8468 transitions. Second operand has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 22 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:29,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:38:29,266 INFO L93 Difference]: Finished difference Result 4371 states and 11307 transitions. [2021-10-13 22:38:29,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-13 22:38:29,266 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 22 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-10-13 22:38:29,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:38:29,271 INFO L225 Difference]: With dead ends: 4371 [2021-10-13 22:38:29,271 INFO L226 Difference]: Without dead ends: 4101 [2021-10-13 22:38:29,271 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 598 ImplicationChecksByTransitivity, 365.1ms TimeCoverageRelationStatistics Valid=623, Invalid=1927, Unknown=0, NotChecked=0, Total=2550 [2021-10-13 22:38:29,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4101 states. [2021-10-13 22:38:29,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4101 to 3128. [2021-10-13 22:38:29,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3128 states, 3127 states have (on average 2.7799808122801406) internal successors, (8693), 3127 states have internal predecessors, (8693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:29,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3128 states to 3128 states and 8693 transitions. [2021-10-13 22:38:29,327 INFO L78 Accepts]: Start accepts. Automaton has 3128 states and 8693 transitions. Word has length 115 [2021-10-13 22:38:29,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:38:29,327 INFO L470 AbstractCegarLoop]: Abstraction has 3128 states and 8693 transitions. [2021-10-13 22:38:29,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 22 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:29,327 INFO L276 IsEmpty]: Start isEmpty. Operand 3128 states and 8693 transitions. [2021-10-13 22:38:29,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-10-13 22:38:29,329 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:38:29,329 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:38:29,361 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Ended with exit code 0 [2021-10-13 22:38:29,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 142 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable146 [2021-10-13 22:38:29,530 INFO L402 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:38:29,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:38:29,530 INFO L82 PathProgramCache]: Analyzing trace with hash -82346648, now seen corresponding path program 139 times [2021-10-13 22:38:29,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:38:29,530 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629761764] [2021-10-13 22:38:29,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:38:29,531 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:38:29,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:38:29,719 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:29,720 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:38:29,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629761764] [2021-10-13 22:38:29,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629761764] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:29,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288639019] [2021-10-13 22:38:29,720 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:38:29,720 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:38:29,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:38:29,721 INFO L229 MonitoredProcess]: Starting monitored process 143 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:38:29,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (143)] Waiting until timeout for monitored process [2021-10-13 22:38:34,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:38:34,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 22:38:34,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:38:34,486 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:34,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288639019] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:34,486 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:38:34,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2021-10-13 22:38:34,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354697871] [2021-10-13 22:38:34,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:38:34,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:38:34,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:38:34,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=429, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:38:34,487 INFO L87 Difference]: Start difference. First operand 3128 states and 8693 transitions. Second operand has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:34,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:38:34,941 INFO L93 Difference]: Finished difference Result 4396 states and 11432 transitions. [2021-10-13 22:38:34,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-13 22:38:34,941 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-10-13 22:38:34,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:38:34,946 INFO L225 Difference]: With dead ends: 4396 [2021-10-13 22:38:34,946 INFO L226 Difference]: Without dead ends: 4126 [2021-10-13 22:38:34,946 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 620 ImplicationChecksByTransitivity, 445.7ms TimeCoverageRelationStatistics Valid=649, Invalid=2107, Unknown=0, NotChecked=0, Total=2756 [2021-10-13 22:38:34,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4126 states. [2021-10-13 22:38:34,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4126 to 3203. [2021-10-13 22:38:34,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3203 states, 3202 states have (on average 2.7851342910680823) internal successors, (8918), 3202 states have internal predecessors, (8918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:34,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3203 states to 3203 states and 8918 transitions. [2021-10-13 22:38:34,990 INFO L78 Accepts]: Start accepts. Automaton has 3203 states and 8918 transitions. Word has length 115 [2021-10-13 22:38:34,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:38:34,990 INFO L470 AbstractCegarLoop]: Abstraction has 3203 states and 8918 transitions. [2021-10-13 22:38:34,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:34,990 INFO L276 IsEmpty]: Start isEmpty. Operand 3203 states and 8918 transitions. [2021-10-13 22:38:34,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-10-13 22:38:34,993 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:38:34,993 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:38:35,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (143)] Forceful destruction successful, exit code 0 [2021-10-13 22:38:35,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 143 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable147 [2021-10-13 22:38:35,193 INFO L402 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:38:35,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:38:35,193 INFO L82 PathProgramCache]: Analyzing trace with hash -152528650, now seen corresponding path program 140 times [2021-10-13 22:38:35,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:38:35,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334186334] [2021-10-13 22:38:35,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:38:35,194 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:38:35,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:38:35,364 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:35,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:38:35,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334186334] [2021-10-13 22:38:35,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334186334] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:35,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486697643] [2021-10-13 22:38:35,364 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:38:35,364 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:38:35,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:38:35,365 INFO L229 MonitoredProcess]: Starting monitored process 144 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:38:35,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Waiting until timeout for monitored process [2021-10-13 22:38:39,741 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:38:39,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:38:39,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 22:38:39,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:38:40,030 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:40,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486697643] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:40,030 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:38:40,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2021-10-13 22:38:40,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214564413] [2021-10-13 22:38:40,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 22:38:40,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:38:40,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 22:38:40,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2021-10-13 22:38:40,031 INFO L87 Difference]: Start difference. First operand 3203 states and 8918 transitions. Second operand has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 22 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:40,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:38:40,429 INFO L93 Difference]: Finished difference Result 4421 states and 11557 transitions. [2021-10-13 22:38:40,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-13 22:38:40,430 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 22 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-10-13 22:38:40,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:38:40,434 INFO L225 Difference]: With dead ends: 4421 [2021-10-13 22:38:40,435 INFO L226 Difference]: Without dead ends: 4151 [2021-10-13 22:38:40,435 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 679 ImplicationChecksByTransitivity, 376.4ms TimeCoverageRelationStatistics Valid=693, Invalid=2063, Unknown=0, NotChecked=0, Total=2756 [2021-10-13 22:38:40,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4151 states. [2021-10-13 22:38:40,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4151 to 3278. [2021-10-13 22:38:40,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3278 states, 3277 states have (on average 2.790051876716509) internal successors, (9143), 3277 states have internal predecessors, (9143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:40,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3278 states to 3278 states and 9143 transitions. [2021-10-13 22:38:40,534 INFO L78 Accepts]: Start accepts. Automaton has 3278 states and 9143 transitions. Word has length 115 [2021-10-13 22:38:40,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:38:40,534 INFO L470 AbstractCegarLoop]: Abstraction has 3278 states and 9143 transitions. [2021-10-13 22:38:40,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 22 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:40,534 INFO L276 IsEmpty]: Start isEmpty. Operand 3278 states and 9143 transitions. [2021-10-13 22:38:40,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-10-13 22:38:40,537 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:38:40,537 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:38:40,570 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Forceful destruction successful, exit code 0 [2021-10-13 22:38:40,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148,144 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:38:40,737 INFO L402 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:38:40,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:38:40,738 INFO L82 PathProgramCache]: Analyzing trace with hash 721464806, now seen corresponding path program 141 times [2021-10-13 22:38:40,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:38:40,738 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011301221] [2021-10-13 22:38:40,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:38:40,738 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:38:40,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:38:40,915 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:40,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:38:40,915 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011301221] [2021-10-13 22:38:40,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011301221] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:40,915 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780320360] [2021-10-13 22:38:40,915 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:38:40,915 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:38:40,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:38:40,916 INFO L229 MonitoredProcess]: Starting monitored process 145 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:38:40,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (145)] Waiting until timeout for monitored process [2021-10-13 22:38:45,342 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-10-13 22:38:45,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:38:45,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 22:38:45,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:38:45,638 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:45,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780320360] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:45,638 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:38:45,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2021-10-13 22:38:45,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789773463] [2021-10-13 22:38:45,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:38:45,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:38:45,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:38:45,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:38:45,639 INFO L87 Difference]: Start difference. First operand 3278 states and 9143 transitions. Second operand has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:46,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:38:46,145 INFO L93 Difference]: Finished difference Result 4446 states and 11682 transitions. [2021-10-13 22:38:46,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-13 22:38:46,145 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-10-13 22:38:46,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:38:46,150 INFO L225 Difference]: With dead ends: 4446 [2021-10-13 22:38:46,150 INFO L226 Difference]: Without dead ends: 4176 [2021-10-13 22:38:46,151 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 704 ImplicationChecksByTransitivity, 473.8ms TimeCoverageRelationStatistics Valid=721, Invalid=2249, Unknown=0, NotChecked=0, Total=2970 [2021-10-13 22:38:46,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4176 states. [2021-10-13 22:38:46,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4176 to 3353. [2021-10-13 22:38:46,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3353 states, 3352 states have (on average 2.7947494033412887) internal successors, (9368), 3352 states have internal predecessors, (9368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:46,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3353 states to 3353 states and 9368 transitions. [2021-10-13 22:38:46,267 INFO L78 Accepts]: Start accepts. Automaton has 3353 states and 9368 transitions. Word has length 115 [2021-10-13 22:38:46,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:38:46,267 INFO L470 AbstractCegarLoop]: Abstraction has 3353 states and 9368 transitions. [2021-10-13 22:38:46,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:46,267 INFO L276 IsEmpty]: Start isEmpty. Operand 3353 states and 9368 transitions. [2021-10-13 22:38:46,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-10-13 22:38:46,269 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:38:46,270 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:38:46,302 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (145)] Ended with exit code 0 [2021-10-13 22:38:46,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 145 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable149 [2021-10-13 22:38:46,473 INFO L402 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:38:46,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:38:46,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1216758516, now seen corresponding path program 142 times [2021-10-13 22:38:46,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:38:46,474 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605860906] [2021-10-13 22:38:46,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:38:46,474 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:38:46,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:38:46,639 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:46,639 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:38:46,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605860906] [2021-10-13 22:38:46,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605860906] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:46,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479042957] [2021-10-13 22:38:46,639 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:38:46,639 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:38:46,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:38:46,640 INFO L229 MonitoredProcess]: Starting monitored process 146 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:38:46,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (146)] Waiting until timeout for monitored process [2021-10-13 22:38:51,106 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:38:51,106 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:38:51,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 22:38:51,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:38:51,375 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:51,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479042957] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:51,375 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:38:51,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2021-10-13 22:38:51,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611711770] [2021-10-13 22:38:51,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 22:38:51,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:38:51,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 22:38:51,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2021-10-13 22:38:51,376 INFO L87 Difference]: Start difference. First operand 3353 states and 9368 transitions. Second operand has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 22 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:51,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:38:51,811 INFO L93 Difference]: Finished difference Result 4471 states and 11807 transitions. [2021-10-13 22:38:51,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-13 22:38:51,811 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 22 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-10-13 22:38:51,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:38:51,816 INFO L225 Difference]: With dead ends: 4471 [2021-10-13 22:38:51,817 INFO L226 Difference]: Without dead ends: 4201 [2021-10-13 22:38:51,817 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 764 ImplicationChecksByTransitivity, 398.2ms TimeCoverageRelationStatistics Valid=779, Invalid=2191, Unknown=0, NotChecked=0, Total=2970 [2021-10-13 22:38:51,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4201 states. [2021-10-13 22:38:51,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4201 to 3428. [2021-10-13 22:38:51,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3428 states, 3427 states have (on average 2.7992413189378467) internal successors, (9593), 3427 states have internal predecessors, (9593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:51,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3428 states to 3428 states and 9593 transitions. [2021-10-13 22:38:51,927 INFO L78 Accepts]: Start accepts. Automaton has 3428 states and 9593 transitions. Word has length 115 [2021-10-13 22:38:51,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:38:51,927 INFO L470 AbstractCegarLoop]: Abstraction has 3428 states and 9593 transitions. [2021-10-13 22:38:51,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 22 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:51,927 INFO L276 IsEmpty]: Start isEmpty. Operand 3428 states and 9593 transitions. [2021-10-13 22:38:51,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-10-13 22:38:51,930 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:38:51,930 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:38:51,963 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (146)] Ended with exit code 0 [2021-10-13 22:38:52,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150,146 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:38:52,131 INFO L402 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:38:52,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:38:52,131 INFO L82 PathProgramCache]: Analyzing trace with hash -1328102428, now seen corresponding path program 143 times [2021-10-13 22:38:52,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:38:52,131 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667984057] [2021-10-13 22:38:52,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:38:52,131 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:38:52,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:38:52,305 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:52,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:38:52,305 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667984057] [2021-10-13 22:38:52,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667984057] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:52,305 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725960142] [2021-10-13 22:38:52,305 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:38:52,306 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:38:52,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:38:52,306 INFO L229 MonitoredProcess]: Starting monitored process 147 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:38:52,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (147)] Waiting until timeout for monitored process [2021-10-13 22:38:56,819 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-10-13 22:38:56,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:38:56,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 22:38:56,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:38:57,091 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:57,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725960142] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:57,091 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:38:57,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2021-10-13 22:38:57,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98101754] [2021-10-13 22:38:57,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:38:57,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:38:57,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:38:57,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:38:57,092 INFO L87 Difference]: Start difference. First operand 3428 states and 9593 transitions. Second operand has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:57,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:38:57,707 INFO L93 Difference]: Finished difference Result 4496 states and 11932 transitions. [2021-10-13 22:38:57,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-13 22:38:57,707 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-10-13 22:38:57,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:38:57,712 INFO L225 Difference]: With dead ends: 4496 [2021-10-13 22:38:57,712 INFO L226 Difference]: Without dead ends: 4226 [2021-10-13 22:38:57,713 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 792 ImplicationChecksByTransitivity, 580.5ms TimeCoverageRelationStatistics Valid=809, Invalid=2383, Unknown=0, NotChecked=0, Total=3192 [2021-10-13 22:38:57,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4226 states. [2021-10-13 22:38:57,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4226 to 3503. [2021-10-13 22:38:57,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3503 states, 3502 states have (on average 2.803540833809252) internal successors, (9818), 3502 states have internal predecessors, (9818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:57,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3503 states to 3503 states and 9818 transitions. [2021-10-13 22:38:57,753 INFO L78 Accepts]: Start accepts. Automaton has 3503 states and 9818 transitions. Word has length 115 [2021-10-13 22:38:57,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:38:57,753 INFO L470 AbstractCegarLoop]: Abstraction has 3503 states and 9818 transitions. [2021-10-13 22:38:57,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:57,753 INFO L276 IsEmpty]: Start isEmpty. Operand 3503 states and 9818 transitions. [2021-10-13 22:38:57,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-10-13 22:38:57,756 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:38:57,756 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:38:57,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (147)] Forceful destruction successful, exit code 0 [2021-10-13 22:38:57,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151,147 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:38:57,956 INFO L402 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:38:57,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:38:57,957 INFO L82 PathProgramCache]: Analyzing trace with hash -418205070, now seen corresponding path program 144 times [2021-10-13 22:38:57,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:38:57,957 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991261155] [2021-10-13 22:38:57,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:38:57,957 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:38:57,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:38:58,120 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:58,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:38:58,120 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991261155] [2021-10-13 22:38:58,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991261155] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:58,120 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362219385] [2021-10-13 22:38:58,120 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:38:58,120 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:38:58,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:38:58,121 INFO L229 MonitoredProcess]: Starting monitored process 148 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:38:58,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (148)] Waiting until timeout for monitored process [2021-10-13 22:39:02,713 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-10-13 22:39:02,714 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:39:02,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 22:39:02,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:39:02,967 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:39:02,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362219385] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:02,967 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:39:02,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2021-10-13 22:39:02,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202397802] [2021-10-13 22:39:02,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 22:39:02,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:39:02,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 22:39:02,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2021-10-13 22:39:02,968 INFO L87 Difference]: Start difference. First operand 3503 states and 9818 transitions. Second operand has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 22 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:03,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:39:03,413 INFO L93 Difference]: Finished difference Result 4566 states and 12177 transitions. [2021-10-13 22:39:03,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-13 22:39:03,414 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 22 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-10-13 22:39:03,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:39:03,419 INFO L225 Difference]: With dead ends: 4566 [2021-10-13 22:39:03,419 INFO L226 Difference]: Without dead ends: 4296 [2021-10-13 22:39:03,419 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 853 ImplicationChecksByTransitivity, 415.7ms TimeCoverageRelationStatistics Valid=881, Invalid=2311, Unknown=0, NotChecked=0, Total=3192 [2021-10-13 22:39:03,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4296 states. [2021-10-13 22:39:03,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4296 to 3578. [2021-10-13 22:39:03,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3578 states, 3577 states have (on average 2.8118535085266982) internal successors, (10058), 3577 states have internal predecessors, (10058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:03,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3578 states to 3578 states and 10058 transitions. [2021-10-13 22:39:03,460 INFO L78 Accepts]: Start accepts. Automaton has 3578 states and 10058 transitions. Word has length 115 [2021-10-13 22:39:03,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:39:03,461 INFO L470 AbstractCegarLoop]: Abstraction has 3578 states and 10058 transitions. [2021-10-13 22:39:03,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 22 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:03,461 INFO L276 IsEmpty]: Start isEmpty. Operand 3578 states and 10058 transitions. [2021-10-13 22:39:03,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-10-13 22:39:03,464 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:39:03,464 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:39:03,498 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (148)] Forceful destruction successful, exit code 0 [2021-10-13 22:39:03,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,148 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:39:03,664 INFO L402 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:39:03,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:39:03,665 INFO L82 PathProgramCache]: Analyzing trace with hash -286089374, now seen corresponding path program 145 times [2021-10-13 22:39:03,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:39:03,665 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722273392] [2021-10-13 22:39:03,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:39:03,665 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:39:03,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:39:03,888 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:39:03,888 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:39:03,888 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722273392] [2021-10-13 22:39:03,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722273392] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:03,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319479397] [2021-10-13 22:39:03,889 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:39:03,889 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:39:03,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:39:03,889 INFO L229 MonitoredProcess]: Starting monitored process 149 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:39:03,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (149)] Waiting until timeout for monitored process [2021-10-13 22:39:08,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:39:08,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 22:39:08,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:39:08,752 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:39:08,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319479397] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:08,752 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:39:08,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2021-10-13 22:39:08,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141043582] [2021-10-13 22:39:08,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:39:08,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:39:08,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:39:08,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:39:08,753 INFO L87 Difference]: Start difference. First operand 3578 states and 10058 transitions. Second operand has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:09,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:39:09,369 INFO L93 Difference]: Finished difference Result 5144 states and 13803 transitions. [2021-10-13 22:39:09,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-13 22:39:09,369 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-10-13 22:39:09,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:39:09,375 INFO L225 Difference]: With dead ends: 5144 [2021-10-13 22:39:09,375 INFO L226 Difference]: Without dead ends: 4521 [2021-10-13 22:39:09,375 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 955 ImplicationChecksByTransitivity, 553.4ms TimeCoverageRelationStatistics Valid=934, Invalid=2726, Unknown=0, NotChecked=0, Total=3660 [2021-10-13 22:39:09,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4521 states. [2021-10-13 22:39:09,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4521 to 3653. [2021-10-13 22:39:09,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3653 states, 3652 states have (on average 2.8170865279299013) internal successors, (10288), 3652 states have internal predecessors, (10288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:09,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3653 states to 3653 states and 10288 transitions. [2021-10-13 22:39:09,414 INFO L78 Accepts]: Start accepts. Automaton has 3653 states and 10288 transitions. Word has length 115 [2021-10-13 22:39:09,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:39:09,414 INFO L470 AbstractCegarLoop]: Abstraction has 3653 states and 10288 transitions. [2021-10-13 22:39:09,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:09,414 INFO L276 IsEmpty]: Start isEmpty. Operand 3653 states and 10288 transitions. [2021-10-13 22:39:09,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-10-13 22:39:09,417 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:39:09,417 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:39:09,451 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (149)] Ended with exit code 0 [2021-10-13 22:39:09,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153,149 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:39:09,618 INFO L402 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:39:09,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:39:09,618 INFO L82 PathProgramCache]: Analyzing trace with hash -742471824, now seen corresponding path program 146 times [2021-10-13 22:39:09,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:39:09,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484375173] [2021-10-13 22:39:09,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:39:09,618 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:39:09,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:39:09,808 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:39:09,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:39:09,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484375173] [2021-10-13 22:39:09,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484375173] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:09,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796776086] [2021-10-13 22:39:09,808 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:39:09,808 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:39:09,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:39:09,809 INFO L229 MonitoredProcess]: Starting monitored process 150 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:39:09,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (150)] Waiting until timeout for monitored process [2021-10-13 22:39:14,467 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:39:14,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:39:14,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 22:39:14,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:39:14,728 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:39:14,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796776086] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:14,728 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:39:14,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2021-10-13 22:39:14,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456690324] [2021-10-13 22:39:14,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 22:39:14,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:39:14,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 22:39:14,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2021-10-13 22:39:14,729 INFO L87 Difference]: Start difference. First operand 3653 states and 10288 transitions. Second operand has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 22 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:15,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:39:15,275 INFO L93 Difference]: Finished difference Result 5348 states and 14471 transitions. [2021-10-13 22:39:15,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-13 22:39:15,275 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 22 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-10-13 22:39:15,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:39:15,281 INFO L225 Difference]: With dead ends: 5348 [2021-10-13 22:39:15,281 INFO L226 Difference]: Without dead ends: 5078 [2021-10-13 22:39:15,282 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 945 ImplicationChecksByTransitivity, 474.7ms TimeCoverageRelationStatistics Valid=1000, Invalid=2422, Unknown=0, NotChecked=0, Total=3422 [2021-10-13 22:39:15,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5078 states. [2021-10-13 22:39:15,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5078 to 3833. [2021-10-13 22:39:15,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3833 states, 3832 states have (on average 2.8306367432150314) internal successors, (10847), 3832 states have internal predecessors, (10847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:15,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3833 states to 3833 states and 10847 transitions. [2021-10-13 22:39:15,326 INFO L78 Accepts]: Start accepts. Automaton has 3833 states and 10847 transitions. Word has length 115 [2021-10-13 22:39:15,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:39:15,326 INFO L470 AbstractCegarLoop]: Abstraction has 3833 states and 10847 transitions. [2021-10-13 22:39:15,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 22 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:15,326 INFO L276 IsEmpty]: Start isEmpty. Operand 3833 states and 10847 transitions. [2021-10-13 22:39:15,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-10-13 22:39:15,329 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:39:15,329 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:39:15,363 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (150)] Ended with exit code 0 [2021-10-13 22:39:15,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 150 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable154 [2021-10-13 22:39:15,530 INFO L402 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:39:15,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:39:15,530 INFO L82 PathProgramCache]: Analyzing trace with hash -677229534, now seen corresponding path program 147 times [2021-10-13 22:39:15,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:39:15,530 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781268374] [2021-10-13 22:39:15,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:39:15,530 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:39:15,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:39:15,737 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:39:15,738 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:39:15,738 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781268374] [2021-10-13 22:39:15,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781268374] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:15,738 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627317318] [2021-10-13 22:39:15,738 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:39:15,738 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:39:15,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:39:15,739 INFO L229 MonitoredProcess]: Starting monitored process 151 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:39:15,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (151)] Waiting until timeout for monitored process [2021-10-13 22:39:20,368 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-10-13 22:39:20,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:39:20,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 22:39:20,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:39:20,610 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:39:20,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627317318] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:20,610 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:39:20,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 24 [2021-10-13 22:39:20,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758457748] [2021-10-13 22:39:20,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-13 22:39:20,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:39:20,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-13 22:39:20,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-10-13 22:39:20,611 INFO L87 Difference]: Start difference. First operand 3833 states and 10847 transitions. Second operand has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:21,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:39:21,253 INFO L93 Difference]: Finished difference Result 5216 states and 14136 transitions. [2021-10-13 22:39:21,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-10-13 22:39:21,254 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-10-13 22:39:21,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:39:21,259 INFO L225 Difference]: With dead ends: 5216 [2021-10-13 22:39:21,259 INFO L226 Difference]: Without dead ends: 4641 [2021-10-13 22:39:21,260 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1135 ImplicationChecksByTransitivity, 597.2ms TimeCoverageRelationStatistics Valid=1100, Invalid=3060, Unknown=0, NotChecked=0, Total=4160 [2021-10-13 22:39:21,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4641 states. [2021-10-13 22:39:21,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4641 to 2524. [2021-10-13 22:39:21,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2524 states, 2523 states have (on average 2.737217598097503) internal successors, (6906), 2523 states have internal predecessors, (6906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:21,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2524 states to 2524 states and 6906 transitions. [2021-10-13 22:39:21,290 INFO L78 Accepts]: Start accepts. Automaton has 2524 states and 6906 transitions. Word has length 115 [2021-10-13 22:39:21,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:39:21,290 INFO L470 AbstractCegarLoop]: Abstraction has 2524 states and 6906 transitions. [2021-10-13 22:39:21,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:21,291 INFO L276 IsEmpty]: Start isEmpty. Operand 2524 states and 6906 transitions. [2021-10-13 22:39:21,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-10-13 22:39:21,293 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:39:21,293 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:39:21,329 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (151)] Forceful destruction successful, exit code 0 [2021-10-13 22:39:21,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 151 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable155 [2021-10-13 22:39:21,493 INFO L402 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:39:21,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:39:21,493 INFO L82 PathProgramCache]: Analyzing trace with hash 1927187540, now seen corresponding path program 148 times [2021-10-13 22:39:21,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:39:21,494 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329666374] [2021-10-13 22:39:21,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:39:21,494 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:39:21,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:39:21,768 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:39:21,768 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:39:21,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329666374] [2021-10-13 22:39:21,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329666374] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:21,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049030151] [2021-10-13 22:39:21,768 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:39:21,769 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:39:21,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:39:21,769 INFO L229 MonitoredProcess]: Starting monitored process 152 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:39:21,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (152)] Waiting until timeout for monitored process [2021-10-13 22:39:26,436 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:39:26,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:39:26,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-13 22:39:26,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:39:26,926 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:39:26,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049030151] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:26,926 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:39:26,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 27 [2021-10-13 22:39:26,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419470984] [2021-10-13 22:39:26,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-13 22:39:26,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:39:26,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-13 22:39:26,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=546, Unknown=0, NotChecked=0, Total=702 [2021-10-13 22:39:26,927 INFO L87 Difference]: Start difference. First operand 2524 states and 6906 transitions. Second operand has 27 states, 27 states have (on average 5.555555555555555) internal successors, (150), 27 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:27,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:39:27,277 INFO L93 Difference]: Finished difference Result 3614 states and 9406 transitions. [2021-10-13 22:39:27,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-13 22:39:27,277 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.555555555555555) internal successors, (150), 27 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-10-13 22:39:27,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:39:27,281 INFO L225 Difference]: With dead ends: 3614 [2021-10-13 22:39:27,281 INFO L226 Difference]: Without dead ends: 3280 [2021-10-13 22:39:27,281 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 507 ImplicationChecksByTransitivity, 402.1ms TimeCoverageRelationStatistics Valid=680, Invalid=1870, Unknown=0, NotChecked=0, Total=2550 [2021-10-13 22:39:27,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3280 states. [2021-10-13 22:39:27,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3280 to 2609. [2021-10-13 22:39:27,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2609 states, 2608 states have (on average 2.71319018404908) internal successors, (7076), 2608 states have internal predecessors, (7076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:27,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2609 states to 2609 states and 7076 transitions. [2021-10-13 22:39:27,368 INFO L78 Accepts]: Start accepts. Automaton has 2609 states and 7076 transitions. Word has length 120 [2021-10-13 22:39:27,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:39:27,368 INFO L470 AbstractCegarLoop]: Abstraction has 2609 states and 7076 transitions. [2021-10-13 22:39:27,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 5.555555555555555) internal successors, (150), 27 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:27,368 INFO L276 IsEmpty]: Start isEmpty. Operand 2609 states and 7076 transitions. [2021-10-13 22:39:27,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-10-13 22:39:27,370 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:39:27,370 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:39:27,404 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (152)] Ended with exit code 0 [2021-10-13 22:39:27,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 152 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable156 [2021-10-13 22:39:27,571 INFO L402 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:39:27,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:39:27,571 INFO L82 PathProgramCache]: Analyzing trace with hash -995481192, now seen corresponding path program 149 times [2021-10-13 22:39:27,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:39:27,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737194070] [2021-10-13 22:39:27,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:39:27,571 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:39:27,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:39:27,793 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:39:27,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:39:27,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737194070] [2021-10-13 22:39:27,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737194070] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:27,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738000406] [2021-10-13 22:39:27,793 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:39:27,793 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:39:27,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:39:27,794 INFO L229 MonitoredProcess]: Starting monitored process 153 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:39:27,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (153)] Waiting until timeout for monitored process [2021-10-13 22:39:32,528 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-10-13 22:39:32,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:39:32,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-13 22:39:32,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:39:32,939 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:39:32,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738000406] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:32,940 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:39:32,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-10-13 22:39:32,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858650308] [2021-10-13 22:39:32,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-13 22:39:32,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:39:32,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-13 22:39:32,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=425, Unknown=0, NotChecked=0, Total=552 [2021-10-13 22:39:32,940 INFO L87 Difference]: Start difference. First operand 2609 states and 7076 transitions. Second operand has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:33,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:39:33,290 INFO L93 Difference]: Finished difference Result 4436 states and 10987 transitions. [2021-10-13 22:39:33,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-13 22:39:33,291 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-10-13 22:39:33,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:39:33,295 INFO L225 Difference]: With dead ends: 4436 [2021-10-13 22:39:33,295 INFO L226 Difference]: Without dead ends: 4166 [2021-10-13 22:39:33,296 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 334.3ms TimeCoverageRelationStatistics Valid=543, Invalid=1437, Unknown=0, NotChecked=0, Total=1980 [2021-10-13 22:39:33,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4166 states. [2021-10-13 22:39:33,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4166 to 2753. [2021-10-13 22:39:33,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2753 states, 2752 states have (on average 2.722747093023256) internal successors, (7493), 2752 states have internal predecessors, (7493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:33,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2753 states to 2753 states and 7493 transitions. [2021-10-13 22:39:33,326 INFO L78 Accepts]: Start accepts. Automaton has 2753 states and 7493 transitions. Word has length 120 [2021-10-13 22:39:33,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:39:33,326 INFO L470 AbstractCegarLoop]: Abstraction has 2753 states and 7493 transitions. [2021-10-13 22:39:33,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:33,326 INFO L276 IsEmpty]: Start isEmpty. Operand 2753 states and 7493 transitions. [2021-10-13 22:39:33,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-10-13 22:39:33,328 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:39:33,328 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:39:33,363 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (153)] Ended with exit code 0 [2021-10-13 22:39:33,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 153 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable157 [2021-10-13 22:39:33,528 INFO L402 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:39:33,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:39:33,529 INFO L82 PathProgramCache]: Analyzing trace with hash -209640824, now seen corresponding path program 150 times [2021-10-13 22:39:33,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:39:33,529 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723964633] [2021-10-13 22:39:33,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:39:33,529 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:39:33,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:39:33,758 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:39:33,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:39:33,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723964633] [2021-10-13 22:39:33,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723964633] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:33,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300969884] [2021-10-13 22:39:33,759 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:39:33,759 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:39:33,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:39:33,759 INFO L229 MonitoredProcess]: Starting monitored process 154 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:39:33,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (154)] Waiting until timeout for monitored process [2021-10-13 22:39:38,642 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-10-13 22:39:38,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:39:38,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-13 22:39:38,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:39:39,060 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:39:39,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300969884] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:39,060 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:39:39,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2021-10-13 22:39:39,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352881265] [2021-10-13 22:39:39,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-13 22:39:39,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:39:39,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-13 22:39:39,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=478, Unknown=0, NotChecked=0, Total=600 [2021-10-13 22:39:39,061 INFO L87 Difference]: Start difference. First operand 2753 states and 7493 transitions. Second operand has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:39,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:39:39,403 INFO L93 Difference]: Finished difference Result 4396 states and 10982 transitions. [2021-10-13 22:39:39,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-13 22:39:39,403 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-10-13 22:39:39,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:39:39,408 INFO L225 Difference]: With dead ends: 4396 [2021-10-13 22:39:39,408 INFO L226 Difference]: Without dead ends: 4126 [2021-10-13 22:39:39,409 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 398.3ms TimeCoverageRelationStatistics Valid=608, Invalid=1744, Unknown=0, NotChecked=0, Total=2352 [2021-10-13 22:39:39,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4126 states. [2021-10-13 22:39:39,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4126 to 2828. [2021-10-13 22:39:39,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2828 states, 2827 states have (on average 2.73010258224266) internal successors, (7718), 2827 states have internal predecessors, (7718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:39,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2828 states to 2828 states and 7718 transitions. [2021-10-13 22:39:39,439 INFO L78 Accepts]: Start accepts. Automaton has 2828 states and 7718 transitions. Word has length 120 [2021-10-13 22:39:39,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:39:39,439 INFO L470 AbstractCegarLoop]: Abstraction has 2828 states and 7718 transitions. [2021-10-13 22:39:39,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:39,440 INFO L276 IsEmpty]: Start isEmpty. Operand 2828 states and 7718 transitions. [2021-10-13 22:39:39,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-10-13 22:39:39,442 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:39:39,442 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:39:39,477 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (154)] Ended with exit code 0 [2021-10-13 22:39:39,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 154 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable158 [2021-10-13 22:39:39,647 INFO L402 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:39:39,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:39:39,647 INFO L82 PathProgramCache]: Analyzing trace with hash -273475562, now seen corresponding path program 151 times [2021-10-13 22:39:39,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:39:39,648 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979169872] [2021-10-13 22:39:39,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:39:39,648 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:39:39,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:39:39,873 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:39:39,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:39:39,873 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979169872] [2021-10-13 22:39:39,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979169872] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:39,873 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60670116] [2021-10-13 22:39:39,873 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:39:39,874 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:39:39,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:39:39,874 INFO L229 MonitoredProcess]: Starting monitored process 155 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:39:39,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (155)] Waiting until timeout for monitored process [2021-10-13 22:39:44,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:39:44,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-13 22:39:44,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:39:45,300 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:39:45,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60670116] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:45,301 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:39:45,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-10-13 22:39:45,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557328031] [2021-10-13 22:39:45,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-13 22:39:45,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:39:45,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-13 22:39:45,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-10-13 22:39:45,301 INFO L87 Difference]: Start difference. First operand 2828 states and 7718 transitions. Second operand has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:45,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:39:45,612 INFO L93 Difference]: Finished difference Result 4446 states and 11157 transitions. [2021-10-13 22:39:45,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-13 22:39:45,612 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-10-13 22:39:45,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:39:45,617 INFO L225 Difference]: With dead ends: 4446 [2021-10-13 22:39:45,617 INFO L226 Difference]: Without dead ends: 4176 [2021-10-13 22:39:45,617 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 357.0ms TimeCoverageRelationStatistics Valid=549, Invalid=1613, Unknown=0, NotChecked=0, Total=2162 [2021-10-13 22:39:45,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4176 states. [2021-10-13 22:39:45,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4176 to 2903. [2021-10-13 22:39:45,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2903 states, 2902 states have (on average 2.7370778773259823) internal successors, (7943), 2902 states have internal predecessors, (7943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:45,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2903 states to 2903 states and 7943 transitions. [2021-10-13 22:39:45,649 INFO L78 Accepts]: Start accepts. Automaton has 2903 states and 7943 transitions. Word has length 120 [2021-10-13 22:39:45,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:39:45,649 INFO L470 AbstractCegarLoop]: Abstraction has 2903 states and 7943 transitions. [2021-10-13 22:39:45,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:45,649 INFO L276 IsEmpty]: Start isEmpty. Operand 2903 states and 7943 transitions. [2021-10-13 22:39:45,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-10-13 22:39:45,651 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:39:45,651 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:39:45,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (155)] Forceful destruction successful, exit code 0 [2021-10-13 22:39:45,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159,155 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:39:45,852 INFO L402 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:39:45,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:39:45,852 INFO L82 PathProgramCache]: Analyzing trace with hash -2058388218, now seen corresponding path program 152 times [2021-10-13 22:39:45,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:39:45,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668000782] [2021-10-13 22:39:45,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:39:45,852 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:39:45,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:39:46,071 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:39:46,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:39:46,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668000782] [2021-10-13 22:39:46,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668000782] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:46,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526636043] [2021-10-13 22:39:46,072 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:39:46,072 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:39:46,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:39:46,073 INFO L229 MonitoredProcess]: Starting monitored process 156 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:39:46,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (156)] Waiting until timeout for monitored process [2021-10-13 22:39:51,017 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:39:51,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:39:51,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-13 22:39:51,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:39:51,412 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:39:51,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526636043] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:51,412 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:39:51,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2021-10-13 22:39:51,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816968077] [2021-10-13 22:39:51,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-13 22:39:51,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:39:51,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-13 22:39:51,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=492, Unknown=0, NotChecked=0, Total=600 [2021-10-13 22:39:51,413 INFO L87 Difference]: Start difference. First operand 2903 states and 7943 transitions. Second operand has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:51,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:39:51,792 INFO L93 Difference]: Finished difference Result 4471 states and 11282 transitions. [2021-10-13 22:39:51,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-13 22:39:51,793 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-10-13 22:39:51,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:39:51,797 INFO L225 Difference]: With dead ends: 4471 [2021-10-13 22:39:51,798 INFO L226 Difference]: Without dead ends: 4201 [2021-10-13 22:39:51,798 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 422.4ms TimeCoverageRelationStatistics Valid=622, Invalid=1928, Unknown=0, NotChecked=0, Total=2550 [2021-10-13 22:39:51,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4201 states. [2021-10-13 22:39:51,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4201 to 2978. [2021-10-13 22:39:51,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2978 states, 2977 states have (on average 2.7437017131340276) internal successors, (8168), 2977 states have internal predecessors, (8168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:51,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2978 states to 2978 states and 8168 transitions. [2021-10-13 22:39:51,844 INFO L78 Accepts]: Start accepts. Automaton has 2978 states and 8168 transitions. Word has length 120 [2021-10-13 22:39:51,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:39:51,844 INFO L470 AbstractCegarLoop]: Abstraction has 2978 states and 8168 transitions. [2021-10-13 22:39:51,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:51,844 INFO L276 IsEmpty]: Start isEmpty. Operand 2978 states and 8168 transitions. [2021-10-13 22:39:51,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-10-13 22:39:51,846 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:39:51,846 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:39:51,882 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (156)] Ended with exit code 0 [2021-10-13 22:39:52,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160,156 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:39:52,047 INFO L402 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:39:52,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:39:52,047 INFO L82 PathProgramCache]: Analyzing trace with hash -476156908, now seen corresponding path program 153 times [2021-10-13 22:39:52,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:39:52,047 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060546795] [2021-10-13 22:39:52,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:39:52,048 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:39:52,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:39:52,253 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:39:52,254 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:39:52,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060546795] [2021-10-13 22:39:52,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060546795] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:52,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839241725] [2021-10-13 22:39:52,254 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:39:52,254 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:39:52,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:39:52,255 INFO L229 MonitoredProcess]: Starting monitored process 157 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:39:52,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (157)] Waiting until timeout for monitored process [2021-10-13 22:39:57,299 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-10-13 22:39:57,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:39:57,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-13 22:39:57,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:39:57,675 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:39:57,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839241725] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:57,676 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:39:57,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-10-13 22:39:57,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061044411] [2021-10-13 22:39:57,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-13 22:39:57,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:39:57,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-13 22:39:57,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2021-10-13 22:39:57,676 INFO L87 Difference]: Start difference. First operand 2978 states and 8168 transitions. Second operand has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:58,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:39:58,018 INFO L93 Difference]: Finished difference Result 4496 states and 11407 transitions. [2021-10-13 22:39:58,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-13 22:39:58,018 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-10-13 22:39:58,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:39:58,023 INFO L225 Difference]: With dead ends: 4496 [2021-10-13 22:39:58,023 INFO L226 Difference]: Without dead ends: 4226 [2021-10-13 22:39:58,024 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 367.3ms TimeCoverageRelationStatistics Valid=571, Invalid=1781, Unknown=0, NotChecked=0, Total=2352 [2021-10-13 22:39:58,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4226 states. [2021-10-13 22:39:58,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4226 to 3053. [2021-10-13 22:39:58,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3053 states, 3052 states have (on average 2.75) internal successors, (8393), 3052 states have internal predecessors, (8393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:58,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3053 states to 3053 states and 8393 transitions. [2021-10-13 22:39:58,057 INFO L78 Accepts]: Start accepts. Automaton has 3053 states and 8393 transitions. Word has length 120 [2021-10-13 22:39:58,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:39:58,058 INFO L470 AbstractCegarLoop]: Abstraction has 3053 states and 8393 transitions. [2021-10-13 22:39:58,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:58,058 INFO L276 IsEmpty]: Start isEmpty. Operand 3053 states and 8393 transitions. [2021-10-13 22:39:58,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-10-13 22:39:58,060 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:39:58,060 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:39:58,098 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (157)] Forceful destruction successful, exit code 0 [2021-10-13 22:39:58,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 157 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable161 [2021-10-13 22:39:58,261 INFO L402 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:39:58,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:39:58,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1483260668, now seen corresponding path program 154 times [2021-10-13 22:39:58,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:39:58,261 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110290732] [2021-10-13 22:39:58,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:39:58,261 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:39:58,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:39:58,472 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:39:58,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:39:58,473 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110290732] [2021-10-13 22:39:58,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110290732] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:58,473 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607805330] [2021-10-13 22:39:58,473 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:39:58,473 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:39:58,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:39:58,473 INFO L229 MonitoredProcess]: Starting monitored process 158 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:39:58,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (158)] Waiting until timeout for monitored process [2021-10-13 22:40:03,478 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:40:03,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:40:03,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-13 22:40:03,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:40:03,852 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:40:03,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607805330] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:03,852 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:40:03,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2021-10-13 22:40:03,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240474365] [2021-10-13 22:40:03,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-13 22:40:03,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:40:03,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-13 22:40:03,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2021-10-13 22:40:03,853 INFO L87 Difference]: Start difference. First operand 3053 states and 8393 transitions. Second operand has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:04,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:40:04,352 INFO L93 Difference]: Finished difference Result 4521 states and 11532 transitions. [2021-10-13 22:40:04,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-13 22:40:04,352 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-10-13 22:40:04,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:40:04,357 INFO L225 Difference]: With dead ends: 4521 [2021-10-13 22:40:04,357 INFO L226 Difference]: Without dead ends: 4251 [2021-10-13 22:40:04,357 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 518.3ms TimeCoverageRelationStatistics Valid=652, Invalid=2104, Unknown=0, NotChecked=0, Total=2756 [2021-10-13 22:40:04,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4251 states. [2021-10-13 22:40:04,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4251 to 3128. [2021-10-13 22:40:04,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3128 states, 3127 states have (on average 2.7559961624560283) internal successors, (8618), 3127 states have internal predecessors, (8618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:04,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3128 states to 3128 states and 8618 transitions. [2021-10-13 22:40:04,392 INFO L78 Accepts]: Start accepts. Automaton has 3128 states and 8618 transitions. Word has length 120 [2021-10-13 22:40:04,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:40:04,392 INFO L470 AbstractCegarLoop]: Abstraction has 3128 states and 8618 transitions. [2021-10-13 22:40:04,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:04,392 INFO L276 IsEmpty]: Start isEmpty. Operand 3128 states and 8618 transitions. [2021-10-13 22:40:04,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-10-13 22:40:04,394 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:40:04,394 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:40:04,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (158)] Forceful destruction successful, exit code 0 [2021-10-13 22:40:04,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162,158 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:40:04,595 INFO L402 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:40:04,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:40:04,595 INFO L82 PathProgramCache]: Analyzing trace with hash -1348139630, now seen corresponding path program 155 times [2021-10-13 22:40:04,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:40:04,595 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374911751] [2021-10-13 22:40:04,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:40:04,595 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:40:04,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:40:04,792 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:40:04,792 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:40:04,792 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374911751] [2021-10-13 22:40:04,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374911751] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:04,792 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132304236] [2021-10-13 22:40:04,792 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:40:04,792 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:40:04,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:40:04,793 INFO L229 MonitoredProcess]: Starting monitored process 159 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:40:04,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (159)] Waiting until timeout for monitored process [2021-10-13 22:40:09,841 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-10-13 22:40:09,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:40:09,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-13 22:40:09,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:40:10,203 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:40:10,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132304236] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:10,203 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:40:10,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-10-13 22:40:10,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124963348] [2021-10-13 22:40:10,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-13 22:40:10,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:40:10,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-13 22:40:10,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=458, Unknown=0, NotChecked=0, Total=552 [2021-10-13 22:40:10,204 INFO L87 Difference]: Start difference. First operand 3128 states and 8618 transitions. Second operand has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:10,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:40:10,656 INFO L93 Difference]: Finished difference Result 4546 states and 11657 transitions. [2021-10-13 22:40:10,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-13 22:40:10,656 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-10-13 22:40:10,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:40:10,661 INFO L225 Difference]: With dead ends: 4546 [2021-10-13 22:40:10,661 INFO L226 Difference]: Without dead ends: 4276 [2021-10-13 22:40:10,661 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 384.0ms TimeCoverageRelationStatistics Valid=609, Invalid=1941, Unknown=0, NotChecked=0, Total=2550 [2021-10-13 22:40:10,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4276 states. [2021-10-13 22:40:10,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4276 to 3203. [2021-10-13 22:40:10,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3203 states, 3202 states have (on average 2.7617114303560273) internal successors, (8843), 3202 states have internal predecessors, (8843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:10,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3203 states to 3203 states and 8843 transitions. [2021-10-13 22:40:10,697 INFO L78 Accepts]: Start accepts. Automaton has 3203 states and 8843 transitions. Word has length 120 [2021-10-13 22:40:10,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:40:10,697 INFO L470 AbstractCegarLoop]: Abstraction has 3203 states and 8843 transitions. [2021-10-13 22:40:10,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:10,697 INFO L276 IsEmpty]: Start isEmpty. Operand 3203 states and 8843 transitions. [2021-10-13 22:40:10,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-10-13 22:40:10,699 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:40:10,699 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:40:10,735 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (159)] Forceful destruction successful, exit code 0 [2021-10-13 22:40:10,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163,159 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:40:10,900 INFO L402 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:40:10,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:40:10,900 INFO L82 PathProgramCache]: Analyzing trace with hash -1437515134, now seen corresponding path program 156 times [2021-10-13 22:40:10,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:40:10,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923608585] [2021-10-13 22:40:10,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:40:10,900 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:40:10,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:40:11,105 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:40:11,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:40:11,106 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923608585] [2021-10-13 22:40:11,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923608585] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:11,106 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392225402] [2021-10-13 22:40:11,106 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:40:11,106 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:40:11,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:40:11,106 INFO L229 MonitoredProcess]: Starting monitored process 160 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:40:11,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (160)] Waiting until timeout for monitored process [2021-10-13 22:40:16,156 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-10-13 22:40:16,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:40:16,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-13 22:40:16,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:40:16,589 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:40:16,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392225402] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:16,590 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:40:16,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2021-10-13 22:40:16,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889055856] [2021-10-13 22:40:16,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-13 22:40:16,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:40:16,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-13 22:40:16,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=508, Unknown=0, NotChecked=0, Total=600 [2021-10-13 22:40:16,591 INFO L87 Difference]: Start difference. First operand 3203 states and 8843 transitions. Second operand has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:17,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:40:17,061 INFO L93 Difference]: Finished difference Result 4571 states and 11782 transitions. [2021-10-13 22:40:17,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-13 22:40:17,061 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-10-13 22:40:17,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:40:17,066 INFO L225 Difference]: With dead ends: 4571 [2021-10-13 22:40:17,066 INFO L226 Difference]: Without dead ends: 4301 [2021-10-13 22:40:17,067 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 617 ImplicationChecksByTransitivity, 480.4ms TimeCoverageRelationStatistics Valid=698, Invalid=2272, Unknown=0, NotChecked=0, Total=2970 [2021-10-13 22:40:17,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4301 states. [2021-10-13 22:40:17,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4301 to 3278. [2021-10-13 22:40:17,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3278 states, 3277 states have (on average 2.767165090021361) internal successors, (9068), 3277 states have internal predecessors, (9068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:17,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3278 states to 3278 states and 9068 transitions. [2021-10-13 22:40:17,105 INFO L78 Accepts]: Start accepts. Automaton has 3278 states and 9068 transitions. Word has length 120 [2021-10-13 22:40:17,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:40:17,105 INFO L470 AbstractCegarLoop]: Abstraction has 3278 states and 9068 transitions. [2021-10-13 22:40:17,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:17,105 INFO L276 IsEmpty]: Start isEmpty. Operand 3278 states and 9068 transitions. [2021-10-13 22:40:17,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-10-13 22:40:17,107 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:40:17,107 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:40:17,143 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (160)] Ended with exit code 0 [2021-10-13 22:40:17,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164,160 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:40:17,308 INFO L402 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:40:17,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:40:17,308 INFO L82 PathProgramCache]: Analyzing trace with hash -1969765232, now seen corresponding path program 157 times [2021-10-13 22:40:17,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:40:17,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138129600] [2021-10-13 22:40:17,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:40:17,309 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:40:17,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:40:17,499 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:40:17,499 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:40:17,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138129600] [2021-10-13 22:40:17,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138129600] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:17,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999621648] [2021-10-13 22:40:17,499 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:40:17,500 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:40:17,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:40:17,500 INFO L229 MonitoredProcess]: Starting monitored process 161 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:40:17,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (161)] Waiting until timeout for monitored process [2021-10-13 22:40:22,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:40:22,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-13 22:40:22,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:40:22,983 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:40:22,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999621648] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:22,984 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:40:22,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-10-13 22:40:22,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120210723] [2021-10-13 22:40:22,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-13 22:40:22,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:40:22,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-13 22:40:22,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=461, Unknown=0, NotChecked=0, Total=552 [2021-10-13 22:40:22,985 INFO L87 Difference]: Start difference. First operand 3278 states and 9068 transitions. Second operand has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:23,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:40:23,394 INFO L93 Difference]: Finished difference Result 4596 states and 11907 transitions. [2021-10-13 22:40:23,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-13 22:40:23,394 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-10-13 22:40:23,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:40:23,399 INFO L225 Difference]: With dead ends: 4596 [2021-10-13 22:40:23,400 INFO L226 Difference]: Without dead ends: 4326 [2021-10-13 22:40:23,400 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 602 ImplicationChecksByTransitivity, 403.3ms TimeCoverageRelationStatistics Valid=663, Invalid=2093, Unknown=0, NotChecked=0, Total=2756 [2021-10-13 22:40:23,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4326 states. [2021-10-13 22:40:23,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4326 to 3353. [2021-10-13 22:40:23,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3353 states, 3352 states have (on average 2.7723747016706444) internal successors, (9293), 3352 states have internal predecessors, (9293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:23,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3353 states to 3353 states and 9293 transitions. [2021-10-13 22:40:23,439 INFO L78 Accepts]: Start accepts. Automaton has 3353 states and 9293 transitions. Word has length 120 [2021-10-13 22:40:23,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:40:23,439 INFO L470 AbstractCegarLoop]: Abstraction has 3353 states and 9293 transitions. [2021-10-13 22:40:23,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:23,439 INFO L276 IsEmpty]: Start isEmpty. Operand 3353 states and 9293 transitions. [2021-10-13 22:40:23,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-10-13 22:40:23,442 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:40:23,442 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:40:23,477 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (161)] Ended with exit code 0 [2021-10-13 22:40:23,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165,161 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:40:23,643 INFO L402 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:40:23,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:40:23,643 INFO L82 PathProgramCache]: Analyzing trace with hash -183603840, now seen corresponding path program 158 times [2021-10-13 22:40:23,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:40:23,643 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301787984] [2021-10-13 22:40:23,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:40:23,643 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:40:23,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:40:23,892 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:40:23,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:40:23,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301787984] [2021-10-13 22:40:23,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301787984] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:23,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237205322] [2021-10-13 22:40:23,892 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:40:23,893 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:40:23,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:40:23,895 INFO L229 MonitoredProcess]: Starting monitored process 162 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:40:23,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (162)] Waiting until timeout for monitored process [2021-10-13 22:40:29,108 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:40:29,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:40:29,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-13 22:40:29,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:40:29,443 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:40:29,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237205322] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:29,443 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:40:29,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2021-10-13 22:40:29,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005246517] [2021-10-13 22:40:29,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-13 22:40:29,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:40:29,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-13 22:40:29,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2021-10-13 22:40:29,444 INFO L87 Difference]: Start difference. First operand 3353 states and 9293 transitions. Second operand has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:29,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:40:29,964 INFO L93 Difference]: Finished difference Result 4621 states and 12032 transitions. [2021-10-13 22:40:29,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-13 22:40:29,964 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-10-13 22:40:29,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:40:29,969 INFO L225 Difference]: With dead ends: 4621 [2021-10-13 22:40:29,969 INFO L226 Difference]: Without dead ends: 4351 [2021-10-13 22:40:29,970 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 697 ImplicationChecksByTransitivity, 510.2ms TimeCoverageRelationStatistics Valid=760, Invalid=2432, Unknown=0, NotChecked=0, Total=3192 [2021-10-13 22:40:29,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4351 states. [2021-10-13 22:40:30,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4351 to 3428. [2021-10-13 22:40:30,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3428 states, 3427 states have (on average 2.7773562882988037) internal successors, (9518), 3427 states have internal predecessors, (9518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:30,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3428 states to 3428 states and 9518 transitions. [2021-10-13 22:40:30,011 INFO L78 Accepts]: Start accepts. Automaton has 3428 states and 9518 transitions. Word has length 120 [2021-10-13 22:40:30,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:40:30,011 INFO L470 AbstractCegarLoop]: Abstraction has 3428 states and 9518 transitions. [2021-10-13 22:40:30,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:30,012 INFO L276 IsEmpty]: Start isEmpty. Operand 3428 states and 9518 transitions. [2021-10-13 22:40:30,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-10-13 22:40:30,015 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:40:30,015 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:40:30,052 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (162)] Forceful destruction successful, exit code 0 [2021-10-13 22:40:30,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 162 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable166 [2021-10-13 22:40:30,215 INFO L402 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:40:30,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:40:30,215 INFO L82 PathProgramCache]: Analyzing trace with hash -253785842, now seen corresponding path program 159 times [2021-10-13 22:40:30,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:40:30,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492037187] [2021-10-13 22:40:30,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:40:30,216 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:40:30,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:40:30,445 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:40:30,445 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:40:30,445 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492037187] [2021-10-13 22:40:30,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492037187] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:30,445 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145709570] [2021-10-13 22:40:30,445 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:40:30,446 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:40:30,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:40:30,446 INFO L229 MonitoredProcess]: Starting monitored process 163 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:40:30,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (163)] Waiting until timeout for monitored process [2021-10-13 22:40:35,715 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-10-13 22:40:35,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:40:35,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-13 22:40:35,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:40:36,023 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:40:36,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2145709570] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:36,024 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:40:36,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-10-13 22:40:36,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251485055] [2021-10-13 22:40:36,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-13 22:40:36,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:40:36,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-13 22:40:36,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=460, Unknown=0, NotChecked=0, Total=552 [2021-10-13 22:40:36,024 INFO L87 Difference]: Start difference. First operand 3428 states and 9518 transitions. Second operand has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:36,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:40:36,483 INFO L93 Difference]: Finished difference Result 4646 states and 12157 transitions. [2021-10-13 22:40:36,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-13 22:40:36,484 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-10-13 22:40:36,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:40:36,488 INFO L225 Difference]: With dead ends: 4646 [2021-10-13 22:40:36,489 INFO L226 Difference]: Without dead ends: 4376 [2021-10-13 22:40:36,489 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 679 ImplicationChecksByTransitivity, 445.1ms TimeCoverageRelationStatistics Valid=733, Invalid=2237, Unknown=0, NotChecked=0, Total=2970 [2021-10-13 22:40:36,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4376 states. [2021-10-13 22:40:36,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4376 to 3503. [2021-10-13 22:40:36,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3503 states, 3502 states have (on average 2.7821245002855512) internal successors, (9743), 3502 states have internal predecessors, (9743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:36,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3503 states to 3503 states and 9743 transitions. [2021-10-13 22:40:36,529 INFO L78 Accepts]: Start accepts. Automaton has 3503 states and 9743 transitions. Word has length 120 [2021-10-13 22:40:36,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:40:36,529 INFO L470 AbstractCegarLoop]: Abstraction has 3503 states and 9743 transitions. [2021-10-13 22:40:36,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:36,529 INFO L276 IsEmpty]: Start isEmpty. Operand 3503 states and 9743 transitions. [2021-10-13 22:40:36,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-10-13 22:40:36,532 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:40:36,532 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:40:36,569 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (163)] Forceful destruction successful, exit code 0 [2021-10-13 22:40:36,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 163 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable167 [2021-10-13 22:40:36,733 INFO L402 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:40:36,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:40:36,733 INFO L82 PathProgramCache]: Analyzing trace with hash 620207614, now seen corresponding path program 160 times [2021-10-13 22:40:36,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:40:36,733 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000011098] [2021-10-13 22:40:36,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:40:36,733 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:40:36,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:40:36,959 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:40:36,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:40:36,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000011098] [2021-10-13 22:40:36,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000011098] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:36,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693887334] [2021-10-13 22:40:36,960 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:40:36,960 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:40:36,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:40:36,960 INFO L229 MonitoredProcess]: Starting monitored process 164 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:40:36,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (164)] Waiting until timeout for monitored process [2021-10-13 22:40:42,293 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:40:42,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:40:42,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-13 22:40:42,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:40:42,612 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:40:42,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693887334] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:42,612 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:40:42,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2021-10-13 22:40:42,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619591155] [2021-10-13 22:40:42,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-13 22:40:42,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:40:42,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-13 22:40:42,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=508, Unknown=0, NotChecked=0, Total=600 [2021-10-13 22:40:42,613 INFO L87 Difference]: Start difference. First operand 3503 states and 9743 transitions. Second operand has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:43,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:40:43,181 INFO L93 Difference]: Finished difference Result 4671 states and 12282 transitions. [2021-10-13 22:40:43,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-13 22:40:43,181 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-10-13 22:40:43,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:40:43,187 INFO L225 Difference]: With dead ends: 4671 [2021-10-13 22:40:43,187 INFO L226 Difference]: Without dead ends: 4401 [2021-10-13 22:40:43,187 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 781 ImplicationChecksByTransitivity, 545.6ms TimeCoverageRelationStatistics Valid=838, Invalid=2584, Unknown=0, NotChecked=0, Total=3422 [2021-10-13 22:40:43,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4401 states. [2021-10-13 22:40:43,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4401 to 3578. [2021-10-13 22:40:43,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3578 states, 3577 states have (on average 2.786692759295499) internal successors, (9968), 3577 states have internal predecessors, (9968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:43,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3578 states to 3578 states and 9968 transitions. [2021-10-13 22:40:43,229 INFO L78 Accepts]: Start accepts. Automaton has 3578 states and 9968 transitions. Word has length 120 [2021-10-13 22:40:43,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:40:43,229 INFO L470 AbstractCegarLoop]: Abstraction has 3578 states and 9968 transitions. [2021-10-13 22:40:43,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:43,229 INFO L276 IsEmpty]: Start isEmpty. Operand 3578 states and 9968 transitions. [2021-10-13 22:40:43,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-10-13 22:40:43,232 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:40:43,232 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:40:43,269 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (164)] Ended with exit code 0 [2021-10-13 22:40:43,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168,164 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:40:43,433 INFO L402 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:40:43,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:40:43,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1115501324, now seen corresponding path program 161 times [2021-10-13 22:40:43,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:40:43,433 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65843708] [2021-10-13 22:40:43,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:40:43,433 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:40:43,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:40:43,616 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:40:43,616 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:40:43,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65843708] [2021-10-13 22:40:43,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65843708] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:43,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029664281] [2021-10-13 22:40:43,617 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:40:43,617 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:40:43,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:40:43,617 INFO L229 MonitoredProcess]: Starting monitored process 165 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:40:43,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (165)] Waiting until timeout for monitored process [2021-10-13 22:40:48,938 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-10-13 22:40:48,938 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:40:48,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-13 22:40:48,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:40:49,222 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:40:49,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029664281] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:49,222 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:40:49,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-10-13 22:40:49,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882596075] [2021-10-13 22:40:49,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-13 22:40:49,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:40:49,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-13 22:40:49,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2021-10-13 22:40:49,223 INFO L87 Difference]: Start difference. First operand 3578 states and 9968 transitions. Second operand has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:49,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:40:49,694 INFO L93 Difference]: Finished difference Result 4696 states and 12407 transitions. [2021-10-13 22:40:49,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-13 22:40:49,694 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-10-13 22:40:49,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:40:49,700 INFO L225 Difference]: With dead ends: 4696 [2021-10-13 22:40:49,700 INFO L226 Difference]: Without dead ends: 4426 [2021-10-13 22:40:49,700 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 760 ImplicationChecksByTransitivity, 442.8ms TimeCoverageRelationStatistics Valid=819, Invalid=2373, Unknown=0, NotChecked=0, Total=3192 [2021-10-13 22:40:49,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4426 states. [2021-10-13 22:40:49,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4426 to 3653. [2021-10-13 22:40:49,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3653 states, 3652 states have (on average 2.7910733844468782) internal successors, (10193), 3652 states have internal predecessors, (10193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:49,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3653 states to 3653 states and 10193 transitions. [2021-10-13 22:40:49,743 INFO L78 Accepts]: Start accepts. Automaton has 3653 states and 10193 transitions. Word has length 120 [2021-10-13 22:40:49,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:40:49,743 INFO L470 AbstractCegarLoop]: Abstraction has 3653 states and 10193 transitions. [2021-10-13 22:40:49,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:49,743 INFO L276 IsEmpty]: Start isEmpty. Operand 3653 states and 10193 transitions. [2021-10-13 22:40:49,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-10-13 22:40:49,746 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:40:49,746 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:40:49,783 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (165)] Ended with exit code 0 [2021-10-13 22:40:49,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 165 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable169 [2021-10-13 22:40:49,947 INFO L402 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:40:49,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:40:49,947 INFO L82 PathProgramCache]: Analyzing trace with hash -1429359620, now seen corresponding path program 162 times [2021-10-13 22:40:49,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:40:49,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385102364] [2021-10-13 22:40:49,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:40:49,947 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:40:49,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:40:50,203 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:40:50,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:40:50,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385102364] [2021-10-13 22:40:50,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385102364] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:50,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447968302] [2021-10-13 22:40:50,203 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:40:50,203 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:40:50,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:40:50,204 INFO L229 MonitoredProcess]: Starting monitored process 166 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:40:50,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (166)] Waiting until timeout for monitored process [2021-10-13 22:40:55,525 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-10-13 22:40:55,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:40:55,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-13 22:40:55,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:40:55,815 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:40:55,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447968302] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:55,815 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:40:55,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2021-10-13 22:40:55,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030144185] [2021-10-13 22:40:55,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-13 22:40:55,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:40:55,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-13 22:40:55,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2021-10-13 22:40:55,816 INFO L87 Difference]: Start difference. First operand 3653 states and 10193 transitions. Second operand has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:56,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:40:56,426 INFO L93 Difference]: Finished difference Result 4721 states and 12532 transitions. [2021-10-13 22:40:56,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-13 22:40:56,426 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-10-13 22:40:56,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:40:56,432 INFO L225 Difference]: With dead ends: 4721 [2021-10-13 22:40:56,432 INFO L226 Difference]: Without dead ends: 4451 [2021-10-13 22:40:56,433 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 869 ImplicationChecksByTransitivity, 578.1ms TimeCoverageRelationStatistics Valid=932, Invalid=2728, Unknown=0, NotChecked=0, Total=3660 [2021-10-13 22:40:56,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4451 states. [2021-10-13 22:40:56,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4451 to 3728. [2021-10-13 22:40:56,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3728 states, 3727 states have (on average 2.795277703246579) internal successors, (10418), 3727 states have internal predecessors, (10418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:56,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3728 states to 3728 states and 10418 transitions. [2021-10-13 22:40:56,519 INFO L78 Accepts]: Start accepts. Automaton has 3728 states and 10418 transitions. Word has length 120 [2021-10-13 22:40:56,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:40:56,519 INFO L470 AbstractCegarLoop]: Abstraction has 3728 states and 10418 transitions. [2021-10-13 22:40:56,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:56,520 INFO L276 IsEmpty]: Start isEmpty. Operand 3728 states and 10418 transitions. [2021-10-13 22:40:56,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-10-13 22:40:56,523 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:40:56,523 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:40:56,560 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (166)] Ended with exit code 0 [2021-10-13 22:40:56,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170,166 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:40:56,723 INFO L402 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:40:56,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:40:56,724 INFO L82 PathProgramCache]: Analyzing trace with hash -519462262, now seen corresponding path program 163 times [2021-10-13 22:40:56,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:40:56,724 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347379484] [2021-10-13 22:40:56,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:40:56,724 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:40:56,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:40:56,901 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:40:56,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:40:56,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347379484] [2021-10-13 22:40:56,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347379484] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:56,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866121630] [2021-10-13 22:40:56,902 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:40:56,902 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:40:56,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:40:56,903 INFO L229 MonitoredProcess]: Starting monitored process 167 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:40:56,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (167)] Waiting until timeout for monitored process [2021-10-13 22:41:02,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:41:02,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-13 22:41:02,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:41:02,576 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:41:02,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [866121630] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:02,576 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:41:02,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-10-13 22:41:02,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430096158] [2021-10-13 22:41:02,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-13 22:41:02,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:41:02,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-13 22:41:02,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2021-10-13 22:41:02,577 INFO L87 Difference]: Start difference. First operand 3728 states and 10418 transitions. Second operand has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:03,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:41:03,077 INFO L93 Difference]: Finished difference Result 4791 states and 12777 transitions. [2021-10-13 22:41:03,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-13 22:41:03,078 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-10-13 22:41:03,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:41:03,084 INFO L225 Difference]: With dead ends: 4791 [2021-10-13 22:41:03,084 INFO L226 Difference]: Without dead ends: 4521 [2021-10-13 22:41:03,084 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 845 ImplicationChecksByTransitivity, 465.5ms TimeCoverageRelationStatistics Valid=921, Invalid=2501, Unknown=0, NotChecked=0, Total=3422 [2021-10-13 22:41:03,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4521 states. [2021-10-13 22:41:03,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4521 to 3803. [2021-10-13 22:41:03,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3803 states, 3802 states have (on average 2.8032614413466597) internal successors, (10658), 3802 states have internal predecessors, (10658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:03,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3803 states to 3803 states and 10658 transitions. [2021-10-13 22:41:03,132 INFO L78 Accepts]: Start accepts. Automaton has 3803 states and 10658 transitions. Word has length 120 [2021-10-13 22:41:03,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:41:03,132 INFO L470 AbstractCegarLoop]: Abstraction has 3803 states and 10658 transitions. [2021-10-13 22:41:03,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:03,132 INFO L276 IsEmpty]: Start isEmpty. Operand 3803 states and 10658 transitions. [2021-10-13 22:41:03,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-10-13 22:41:03,135 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:41:03,135 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:41:03,171 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (167)] Ended with exit code 0 [2021-10-13 22:41:03,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 167 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable171 [2021-10-13 22:41:03,336 INFO L402 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:41:03,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:41:03,336 INFO L82 PathProgramCache]: Analyzing trace with hash -387346566, now seen corresponding path program 164 times [2021-10-13 22:41:03,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:41:03,336 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296043229] [2021-10-13 22:41:03,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:41:03,336 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:41:03,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:41:03,587 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:41:03,588 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:41:03,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296043229] [2021-10-13 22:41:03,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296043229] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:03,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118647461] [2021-10-13 22:41:03,588 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:41:03,588 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:41:03,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:41:03,589 INFO L229 MonitoredProcess]: Starting monitored process 168 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:41:03,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (168)] Waiting until timeout for monitored process [2021-10-13 22:41:08,952 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:41:08,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:41:08,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-13 22:41:08,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:41:09,258 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:41:09,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118647461] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:09,258 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:41:09,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2021-10-13 22:41:09,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943033805] [2021-10-13 22:41:09,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-13 22:41:09,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:41:09,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-13 22:41:09,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=492, Unknown=0, NotChecked=0, Total=600 [2021-10-13 22:41:09,259 INFO L87 Difference]: Start difference. First operand 3803 states and 10658 transitions. Second operand has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:09,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:41:09,946 INFO L93 Difference]: Finished difference Result 5369 states and 14403 transitions. [2021-10-13 22:41:09,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-10-13 22:41:09,947 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-10-13 22:41:09,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:41:09,953 INFO L225 Difference]: With dead ends: 5369 [2021-10-13 22:41:09,953 INFO L226 Difference]: Without dead ends: 4746 [2021-10-13 22:41:09,953 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1036 ImplicationChecksByTransitivity, 639.4ms TimeCoverageRelationStatistics Valid=1065, Invalid=3095, Unknown=0, NotChecked=0, Total=4160 [2021-10-13 22:41:09,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4746 states. [2021-10-13 22:41:09,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4746 to 3878. [2021-10-13 22:41:09,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3878 states, 3877 states have (on average 2.8083569770441064) internal successors, (10888), 3877 states have internal predecessors, (10888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:09,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3878 states to 3878 states and 10888 transitions. [2021-10-13 22:41:09,995 INFO L78 Accepts]: Start accepts. Automaton has 3878 states and 10888 transitions. Word has length 120 [2021-10-13 22:41:09,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:41:09,995 INFO L470 AbstractCegarLoop]: Abstraction has 3878 states and 10888 transitions. [2021-10-13 22:41:09,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:09,995 INFO L276 IsEmpty]: Start isEmpty. Operand 3878 states and 10888 transitions. [2021-10-13 22:41:09,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-10-13 22:41:09,998 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:41:09,998 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:41:10,036 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (168)] Ended with exit code 0 [2021-10-13 22:41:10,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 168 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable172 [2021-10-13 22:41:10,199 INFO L402 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:41:10,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:41:10,199 INFO L82 PathProgramCache]: Analyzing trace with hash -843729016, now seen corresponding path program 165 times [2021-10-13 22:41:10,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:41:10,199 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980453648] [2021-10-13 22:41:10,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:41:10,199 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:41:10,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:41:10,424 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:41:10,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:41:10,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980453648] [2021-10-13 22:41:10,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980453648] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:10,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106463230] [2021-10-13 22:41:10,425 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:41:10,425 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:41:10,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:41:10,426 INFO L229 MonitoredProcess]: Starting monitored process 169 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:41:10,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (169)] Waiting until timeout for monitored process [2021-10-13 22:41:15,850 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-10-13 22:41:15,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:41:15,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-13 22:41:15,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:41:16,091 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:41:16,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106463230] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:16,091 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:41:16,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-10-13 22:41:16,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374622097] [2021-10-13 22:41:16,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-13 22:41:16,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:41:16,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-13 22:41:16,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=433, Unknown=0, NotChecked=0, Total=552 [2021-10-13 22:41:16,092 INFO L87 Difference]: Start difference. First operand 3878 states and 10888 transitions. Second operand has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:16,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:41:16,647 INFO L93 Difference]: Finished difference Result 5598 states and 15121 transitions. [2021-10-13 22:41:16,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-13 22:41:16,647 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-10-13 22:41:16,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:41:16,654 INFO L225 Difference]: With dead ends: 5598 [2021-10-13 22:41:16,654 INFO L226 Difference]: Without dead ends: 5328 [2021-10-13 22:41:16,654 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 933 ImplicationChecksByTransitivity, 488.8ms TimeCoverageRelationStatistics Valid=1040, Invalid=2620, Unknown=0, NotChecked=0, Total=3660 [2021-10-13 22:41:16,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5328 states. [2021-10-13 22:41:16,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5328 to 4058. [2021-10-13 22:41:16,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4058 states, 4057 states have (on average 2.82154301207789) internal successors, (11447), 4057 states have internal predecessors, (11447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:16,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4058 states to 4058 states and 11447 transitions. [2021-10-13 22:41:16,698 INFO L78 Accepts]: Start accepts. Automaton has 4058 states and 11447 transitions. Word has length 120 [2021-10-13 22:41:16,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:41:16,698 INFO L470 AbstractCegarLoop]: Abstraction has 4058 states and 11447 transitions. [2021-10-13 22:41:16,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:16,698 INFO L276 IsEmpty]: Start isEmpty. Operand 4058 states and 11447 transitions. [2021-10-13 22:41:16,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-10-13 22:41:16,702 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:41:16,702 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:41:16,740 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (169)] Forceful destruction successful, exit code 0 [2021-10-13 22:41:16,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173,169 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:41:16,902 INFO L402 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:41:16,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:41:16,903 INFO L82 PathProgramCache]: Analyzing trace with hash -778486726, now seen corresponding path program 166 times [2021-10-13 22:41:16,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:41:16,903 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927215396] [2021-10-13 22:41:16,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:41:16,903 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:41:16,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:41:17,132 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:41:17,132 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:41:17,132 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927215396] [2021-10-13 22:41:17,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927215396] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:17,132 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412798451] [2021-10-13 22:41:17,132 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:41:17,132 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:41:17,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:41:17,133 INFO L229 MonitoredProcess]: Starting monitored process 170 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:41:17,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (170)] Waiting until timeout for monitored process [2021-10-13 22:41:22,695 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:41:22,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:41:22,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-13 22:41:22,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:41:22,947 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:41:22,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [412798451] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:22,947 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:41:22,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2021-10-13 22:41:22,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771259602] [2021-10-13 22:41:22,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-13 22:41:22,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:41:22,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-13 22:41:22,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=478, Unknown=0, NotChecked=0, Total=600 [2021-10-13 22:41:22,948 INFO L87 Difference]: Start difference. First operand 4058 states and 11447 transitions. Second operand has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:23,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:41:23,673 INFO L93 Difference]: Finished difference Result 5421 states and 14621 transitions. [2021-10-13 22:41:23,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-10-13 22:41:23,673 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-10-13 22:41:23,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:41:23,679 INFO L225 Difference]: With dead ends: 5421 [2021-10-13 22:41:23,679 INFO L226 Difference]: Without dead ends: 4846 [2021-10-13 22:41:23,680 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1184 ImplicationChecksByTransitivity, 677.2ms TimeCoverageRelationStatistics Valid=1212, Invalid=3344, Unknown=0, NotChecked=0, Total=4556 [2021-10-13 22:41:23,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4846 states. [2021-10-13 22:41:23,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4846 to 2803. [2021-10-13 22:41:23,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2803 states, 2802 states have (on average 2.73661670235546) internal successors, (7668), 2802 states have internal predecessors, (7668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:23,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2803 states to 2803 states and 7668 transitions. [2021-10-13 22:41:23,715 INFO L78 Accepts]: Start accepts. Automaton has 2803 states and 7668 transitions. Word has length 120 [2021-10-13 22:41:23,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:41:23,715 INFO L470 AbstractCegarLoop]: Abstraction has 2803 states and 7668 transitions. [2021-10-13 22:41:23,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:23,715 INFO L276 IsEmpty]: Start isEmpty. Operand 2803 states and 7668 transitions. [2021-10-13 22:41:23,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-10-13 22:41:23,717 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:41:23,717 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:41:23,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (170)] Forceful destruction successful, exit code 0 [2021-10-13 22:41:23,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174,170 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:41:23,917 INFO L402 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:41:23,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:41:23,918 INFO L82 PathProgramCache]: Analyzing trace with hash -1269647185, now seen corresponding path program 167 times [2021-10-13 22:41:23,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:41:23,918 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577781144] [2021-10-13 22:41:23,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:41:23,918 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:41:23,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:41:24,153 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:41:24,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:41:24,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577781144] [2021-10-13 22:41:24,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577781144] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:24,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415115965] [2021-10-13 22:41:24,153 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:41:24,153 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:41:24,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:41:24,154 INFO L229 MonitoredProcess]: Starting monitored process 171 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:41:24,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (171)] Waiting until timeout for monitored process [2021-10-13 22:41:29,685 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-10-13 22:41:29,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:41:29,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-13 22:41:29,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:41:30,106 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:41:30,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415115965] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:30,106 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:41:30,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-10-13 22:41:30,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569613994] [2021-10-13 22:41:30,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-13 22:41:30,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:41:30,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-13 22:41:30,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2021-10-13 22:41:30,107 INFO L87 Difference]: Start difference. First operand 2803 states and 7668 transitions. Second operand has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:30,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:41:30,436 INFO L93 Difference]: Finished difference Result 4121 states and 10507 transitions. [2021-10-13 22:41:30,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-13 22:41:30,436 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-10-13 22:41:30,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:41:30,441 INFO L225 Difference]: With dead ends: 4121 [2021-10-13 22:41:30,441 INFO L226 Difference]: Without dead ends: 3851 [2021-10-13 22:41:30,441 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 421 ImplicationChecksByTransitivity, 379.2ms TimeCoverageRelationStatistics Valid=610, Invalid=1742, Unknown=0, NotChecked=0, Total=2352 [2021-10-13 22:41:30,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3851 states. [2021-10-13 22:41:30,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3851 to 2878. [2021-10-13 22:41:30,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2878 states, 2877 states have (on average 2.743482794577685) internal successors, (7893), 2877 states have internal predecessors, (7893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:30,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2878 states to 2878 states and 7893 transitions. [2021-10-13 22:41:30,471 INFO L78 Accepts]: Start accepts. Automaton has 2878 states and 7893 transitions. Word has length 125 [2021-10-13 22:41:30,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:41:30,471 INFO L470 AbstractCegarLoop]: Abstraction has 2878 states and 7893 transitions. [2021-10-13 22:41:30,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:30,471 INFO L276 IsEmpty]: Start isEmpty. Operand 2878 states and 7893 transitions. [2021-10-13 22:41:30,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-10-13 22:41:30,474 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:41:30,474 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:41:30,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (171)] Forceful destruction successful, exit code 0 [2021-10-13 22:41:30,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175,171 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:41:30,674 INFO L402 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:41:30,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:41:30,674 INFO L82 PathProgramCache]: Analyzing trace with hash -483806817, now seen corresponding path program 168 times [2021-10-13 22:41:30,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:41:30,675 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65368420] [2021-10-13 22:41:30,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:41:30,675 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:41:30,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:41:30,922 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:41:30,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:41:30,922 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65368420] [2021-10-13 22:41:30,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65368420] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:30,922 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569836804] [2021-10-13 22:41:30,922 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:41:30,922 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:41:30,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:41:30,923 INFO L229 MonitoredProcess]: Starting monitored process 172 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:41:30,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (172)] Waiting until timeout for monitored process [2021-10-13 22:41:36,542 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-10-13 22:41:36,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:41:36,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-13 22:41:36,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:41:36,969 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:41:36,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569836804] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:36,969 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:41:36,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2021-10-13 22:41:36,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855856325] [2021-10-13 22:41:36,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 22:41:36,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:41:36,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 22:41:36,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=525, Unknown=0, NotChecked=0, Total=650 [2021-10-13 22:41:36,970 INFO L87 Difference]: Start difference. First operand 2878 states and 7893 transitions. Second operand has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:37,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:41:37,336 INFO L93 Difference]: Finished difference Result 4591 states and 11522 transitions. [2021-10-13 22:41:37,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-13 22:41:37,336 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-10-13 22:41:37,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:41:37,341 INFO L225 Difference]: With dead ends: 4591 [2021-10-13 22:41:37,341 INFO L226 Difference]: Without dead ends: 4321 [2021-10-13 22:41:37,341 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 498 ImplicationChecksByTransitivity, 432.0ms TimeCoverageRelationStatistics Valid=665, Invalid=1987, Unknown=0, NotChecked=0, Total=2652 [2021-10-13 22:41:37,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4321 states. [2021-10-13 22:41:37,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4321 to 2953. [2021-10-13 22:41:37,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2953 states, 2952 states have (on average 2.75) internal successors, (8118), 2952 states have internal predecessors, (8118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:37,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2953 states to 2953 states and 8118 transitions. [2021-10-13 22:41:37,373 INFO L78 Accepts]: Start accepts. Automaton has 2953 states and 8118 transitions. Word has length 125 [2021-10-13 22:41:37,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:41:37,374 INFO L470 AbstractCegarLoop]: Abstraction has 2953 states and 8118 transitions. [2021-10-13 22:41:37,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:37,374 INFO L276 IsEmpty]: Start isEmpty. Operand 2953 states and 8118 transitions. [2021-10-13 22:41:37,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-10-13 22:41:37,376 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:41:37,376 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:41:37,413 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (172)] Ended with exit code 0 [2021-10-13 22:41:37,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 172 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable176 [2021-10-13 22:41:37,576 INFO L402 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:41:37,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:41:37,577 INFO L82 PathProgramCache]: Analyzing trace with hash -547641555, now seen corresponding path program 169 times [2021-10-13 22:41:37,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:41:37,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544310036] [2021-10-13 22:41:37,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:41:37,577 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:41:37,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:41:37,862 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:41:37,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:41:37,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544310036] [2021-10-13 22:41:37,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544310036] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:37,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727380545] [2021-10-13 22:41:37,862 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:41:37,862 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:41:37,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:41:37,863 INFO L229 MonitoredProcess]: Starting monitored process 173 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:41:37,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (173)] Waiting until timeout for monitored process [2021-10-13 22:41:43,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:41:43,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-13 22:41:43,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:41:43,921 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:41:43,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1727380545] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:43,921 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:41:43,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-10-13 22:41:43,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337458856] [2021-10-13 22:41:43,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-13 22:41:43,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:41:43,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-13 22:41:43,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=484, Unknown=0, NotChecked=0, Total=600 [2021-10-13 22:41:43,922 INFO L87 Difference]: Start difference. First operand 2953 states and 8118 transitions. Second operand has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:44,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:41:44,279 INFO L93 Difference]: Finished difference Result 4621 states and 11657 transitions. [2021-10-13 22:41:44,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-13 22:41:44,280 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-10-13 22:41:44,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:41:44,285 INFO L225 Difference]: With dead ends: 4621 [2021-10-13 22:41:44,285 INFO L226 Difference]: Without dead ends: 4351 [2021-10-13 22:41:44,285 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 550 ImplicationChecksByTransitivity, 396.6ms TimeCoverageRelationStatistics Valid=663, Invalid=1989, Unknown=0, NotChecked=0, Total=2652 [2021-10-13 22:41:44,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4351 states. [2021-10-13 22:41:44,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4351 to 3028. [2021-10-13 22:41:44,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3028 states, 3027 states have (on average 2.7561942517343905) internal successors, (8343), 3027 states have internal predecessors, (8343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:44,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3028 states to 3028 states and 8343 transitions. [2021-10-13 22:41:44,323 INFO L78 Accepts]: Start accepts. Automaton has 3028 states and 8343 transitions. Word has length 125 [2021-10-13 22:41:44,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:41:44,323 INFO L470 AbstractCegarLoop]: Abstraction has 3028 states and 8343 transitions. [2021-10-13 22:41:44,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:44,323 INFO L276 IsEmpty]: Start isEmpty. Operand 3028 states and 8343 transitions. [2021-10-13 22:41:44,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-10-13 22:41:44,325 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:41:44,325 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:41:44,365 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (173)] Ended with exit code 0 [2021-10-13 22:41:44,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177,173 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:41:44,526 INFO L402 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:41:44,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:41:44,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1962413085, now seen corresponding path program 170 times [2021-10-13 22:41:44,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:41:44,526 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211259768] [2021-10-13 22:41:44,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:41:44,526 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:41:44,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:41:44,783 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:41:44,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:41:44,783 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211259768] [2021-10-13 22:41:44,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211259768] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:44,783 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8007728] [2021-10-13 22:41:44,783 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:41:44,783 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:41:44,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:41:44,784 INFO L229 MonitoredProcess]: Starting monitored process 174 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:41:44,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (174)] Waiting until timeout for monitored process [2021-10-13 22:41:50,584 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:41:50,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:41:50,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-13 22:41:50,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:41:50,989 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:41:50,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [8007728] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:50,989 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:41:50,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2021-10-13 22:41:50,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083537644] [2021-10-13 22:41:50,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 22:41:50,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:41:50,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 22:41:50,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=538, Unknown=0, NotChecked=0, Total=650 [2021-10-13 22:41:50,990 INFO L87 Difference]: Start difference. First operand 3028 states and 8343 transitions. Second operand has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:51,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:41:51,437 INFO L93 Difference]: Finished difference Result 4646 states and 11782 transitions. [2021-10-13 22:41:51,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-13 22:41:51,437 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-10-13 22:41:51,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:41:51,442 INFO L225 Difference]: With dead ends: 4646 [2021-10-13 22:41:51,442 INFO L226 Difference]: Without dead ends: 4376 [2021-10-13 22:41:51,442 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 566 ImplicationChecksByTransitivity, 473.0ms TimeCoverageRelationStatistics Valid=686, Invalid=2176, Unknown=0, NotChecked=0, Total=2862 [2021-10-13 22:41:51,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4376 states. [2021-10-13 22:41:51,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4376 to 3103. [2021-10-13 22:41:51,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3103 states, 3102 states have (on average 2.762088974854932) internal successors, (8568), 3102 states have internal predecessors, (8568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:51,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3103 states to 3103 states and 8568 transitions. [2021-10-13 22:41:51,479 INFO L78 Accepts]: Start accepts. Automaton has 3103 states and 8568 transitions. Word has length 125 [2021-10-13 22:41:51,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:41:51,479 INFO L470 AbstractCegarLoop]: Abstraction has 3103 states and 8568 transitions. [2021-10-13 22:41:51,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:51,479 INFO L276 IsEmpty]: Start isEmpty. Operand 3103 states and 8568 transitions. [2021-10-13 22:41:51,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-10-13 22:41:51,481 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:41:51,481 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:41:51,521 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (174)] Forceful destruction successful, exit code 0 [2021-10-13 22:41:51,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178,174 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:41:51,682 INFO L402 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:41:51,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:41:51,682 INFO L82 PathProgramCache]: Analyzing trace with hash -750322901, now seen corresponding path program 171 times [2021-10-13 22:41:51,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:41:51,682 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832193082] [2021-10-13 22:41:51,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:41:51,682 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:41:51,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:41:51,899 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:41:51,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:41:51,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832193082] [2021-10-13 22:41:51,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832193082] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:51,900 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623193471] [2021-10-13 22:41:51,900 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:41:51,900 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:41:51,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:41:51,900 INFO L229 MonitoredProcess]: Starting monitored process 175 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:41:51,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (175)] Waiting until timeout for monitored process [2021-10-13 22:41:57,764 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-10-13 22:41:57,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:41:57,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-13 22:41:57,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:41:58,148 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:41:58,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623193471] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:58,148 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:41:58,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-10-13 22:41:58,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067356907] [2021-10-13 22:41:58,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-13 22:41:58,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:41:58,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-13 22:41:58,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=494, Unknown=0, NotChecked=0, Total=600 [2021-10-13 22:41:58,149 INFO L87 Difference]: Start difference. First operand 3103 states and 8568 transitions. Second operand has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:58,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:41:58,551 INFO L93 Difference]: Finished difference Result 4671 states and 11907 transitions. [2021-10-13 22:41:58,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-13 22:41:58,552 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-10-13 22:41:58,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:41:58,556 INFO L225 Difference]: With dead ends: 4671 [2021-10-13 22:41:58,556 INFO L226 Difference]: Without dead ends: 4401 [2021-10-13 22:41:58,557 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 628 ImplicationChecksByTransitivity, 424.9ms TimeCoverageRelationStatistics Valid=698, Invalid=2164, Unknown=0, NotChecked=0, Total=2862 [2021-10-13 22:41:58,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4401 states. [2021-10-13 22:41:58,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4401 to 3178. [2021-10-13 22:41:58,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3178 states, 3177 states have (on average 2.7677053824362607) internal successors, (8793), 3177 states have internal predecessors, (8793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:58,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3178 states to 3178 states and 8793 transitions. [2021-10-13 22:41:58,591 INFO L78 Accepts]: Start accepts. Automaton has 3178 states and 8793 transitions. Word has length 125 [2021-10-13 22:41:58,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:41:58,591 INFO L470 AbstractCegarLoop]: Abstraction has 3178 states and 8793 transitions. [2021-10-13 22:41:58,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:58,591 INFO L276 IsEmpty]: Start isEmpty. Operand 3178 states and 8793 transitions. [2021-10-13 22:41:58,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-10-13 22:41:58,594 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:41:58,594 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:41:58,634 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (175)] Forceful destruction successful, exit code 0 [2021-10-13 22:41:58,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 175 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable179 [2021-10-13 22:41:58,794 INFO L402 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:41:58,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:41:58,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1757426661, now seen corresponding path program 172 times [2021-10-13 22:41:58,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:41:58,795 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125353880] [2021-10-13 22:41:58,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:41:58,795 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:41:58,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:41:59,033 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:41:59,033 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:41:59,033 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125353880] [2021-10-13 22:41:59,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125353880] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:59,033 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874470862] [2021-10-13 22:41:59,033 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:41:59,033 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:41:59,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:41:59,034 INFO L229 MonitoredProcess]: Starting monitored process 176 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:41:59,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (176)] Waiting until timeout for monitored process [2021-10-13 22:42:04,764 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:42:04,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:42:04,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-13 22:42:04,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:42:05,150 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:42:05,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874470862] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:42:05,150 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:42:05,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2021-10-13 22:42:05,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676431661] [2021-10-13 22:42:05,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 22:42:05,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:42:05,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 22:42:05,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=547, Unknown=0, NotChecked=0, Total=650 [2021-10-13 22:42:05,151 INFO L87 Difference]: Start difference. First operand 3178 states and 8793 transitions. Second operand has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:42:05,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:42:05,610 INFO L93 Difference]: Finished difference Result 4696 states and 12032 transitions. [2021-10-13 22:42:05,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-13 22:42:05,610 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-10-13 22:42:05,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:42:05,615 INFO L225 Difference]: With dead ends: 4696 [2021-10-13 22:42:05,615 INFO L226 Difference]: Without dead ends: 4426 [2021-10-13 22:42:05,616 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 647 ImplicationChecksByTransitivity, 483.2ms TimeCoverageRelationStatistics Valid=723, Invalid=2357, Unknown=0, NotChecked=0, Total=3080 [2021-10-13 22:42:05,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4426 states. [2021-10-13 22:42:05,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4426 to 3253. [2021-10-13 22:42:05,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3253 states, 3252 states have (on average 2.773062730627306) internal successors, (9018), 3252 states have internal predecessors, (9018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:42:05,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3253 states to 3253 states and 9018 transitions. [2021-10-13 22:42:05,717 INFO L78 Accepts]: Start accepts. Automaton has 3253 states and 9018 transitions. Word has length 125 [2021-10-13 22:42:05,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:42:05,717 INFO L470 AbstractCegarLoop]: Abstraction has 3253 states and 9018 transitions. [2021-10-13 22:42:05,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:42:05,717 INFO L276 IsEmpty]: Start isEmpty. Operand 3253 states and 9018 transitions. [2021-10-13 22:42:05,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-10-13 22:42:05,720 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:42:05,720 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:42:05,761 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (176)] Forceful destruction successful, exit code 0 [2021-10-13 22:42:05,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180,176 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:42:05,933 INFO L402 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:42:05,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:42:05,933 INFO L82 PathProgramCache]: Analyzing trace with hash -1622305623, now seen corresponding path program 173 times [2021-10-13 22:42:05,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:42:05,934 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421617139] [2021-10-13 22:42:05,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:42:05,934 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:42:05,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:42:06,146 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:42:06,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:42:06,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421617139] [2021-10-13 22:42:06,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421617139] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:42:06,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023809185] [2021-10-13 22:42:06,146 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:42:06,146 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:42:06,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:42:06,147 INFO L229 MonitoredProcess]: Starting monitored process 177 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:42:06,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (177)] Waiting until timeout for monitored process [2021-10-13 22:42:11,915 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-10-13 22:42:11,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:42:11,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-13 22:42:11,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:42:12,361 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:42:12,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023809185] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:42:12,361 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:42:12,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-10-13 22:42:12,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256833816] [2021-10-13 22:42:12,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-13 22:42:12,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:42:12,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-13 22:42:12,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=500, Unknown=0, NotChecked=0, Total=600 [2021-10-13 22:42:12,362 INFO L87 Difference]: Start difference. First operand 3253 states and 9018 transitions. Second operand has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:42:12,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:42:12,786 INFO L93 Difference]: Finished difference Result 4721 states and 12157 transitions. [2021-10-13 22:42:12,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-13 22:42:12,787 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-10-13 22:42:12,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:42:12,792 INFO L225 Difference]: With dead ends: 4721 [2021-10-13 22:42:12,792 INFO L226 Difference]: Without dead ends: 4451 [2021-10-13 22:42:12,794 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 714 ImplicationChecksByTransitivity, 425.4ms TimeCoverageRelationStatistics Valid=749, Invalid=2331, Unknown=0, NotChecked=0, Total=3080 [2021-10-13 22:42:12,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4451 states. [2021-10-13 22:42:12,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4451 to 3328. [2021-10-13 22:42:12,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3328 states, 3327 states have (on average 2.7781785392245264) internal successors, (9243), 3327 states have internal predecessors, (9243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:42:12,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3328 states to 3328 states and 9243 transitions. [2021-10-13 22:42:12,835 INFO L78 Accepts]: Start accepts. Automaton has 3328 states and 9243 transitions. Word has length 125 [2021-10-13 22:42:12,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:42:12,835 INFO L470 AbstractCegarLoop]: Abstraction has 3328 states and 9243 transitions. [2021-10-13 22:42:12,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:42:12,835 INFO L276 IsEmpty]: Start isEmpty. Operand 3328 states and 9243 transitions. [2021-10-13 22:42:12,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-10-13 22:42:12,838 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:42:12,838 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:42:12,879 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (177)] Ended with exit code 0 [2021-10-13 22:42:13,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181,177 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:42:13,038 INFO L402 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:42:13,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:42:13,039 INFO L82 PathProgramCache]: Analyzing trace with hash -1711681127, now seen corresponding path program 174 times [2021-10-13 22:42:13,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:42:13,039 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400201377] [2021-10-13 22:42:13,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:42:13,039 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:42:13,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:42:13,255 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:42:13,255 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:42:13,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400201377] [2021-10-13 22:42:13,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400201377] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:42:13,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295807463] [2021-10-13 22:42:13,256 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:42:13,256 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:42:13,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:42:13,257 INFO L229 MonitoredProcess]: Starting monitored process 178 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:42:13,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (178)] Waiting until timeout for monitored process [2021-10-13 22:42:19,123 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-10-13 22:42:19,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:42:19,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-13 22:42:19,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:42:19,484 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:42:19,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1295807463] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:42:19,484 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:42:19,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2021-10-13 22:42:19,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030276677] [2021-10-13 22:42:19,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 22:42:19,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:42:19,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 22:42:19,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=552, Unknown=0, NotChecked=0, Total=650 [2021-10-13 22:42:19,485 INFO L87 Difference]: Start difference. First operand 3328 states and 9243 transitions. Second operand has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:42:19,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:42:19,991 INFO L93 Difference]: Finished difference Result 4746 states and 12282 transitions. [2021-10-13 22:42:19,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-13 22:42:19,991 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-10-13 22:42:19,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:42:19,996 INFO L225 Difference]: With dead ends: 4746 [2021-10-13 22:42:19,996 INFO L226 Difference]: Without dead ends: 4476 [2021-10-13 22:42:19,997 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 736 ImplicationChecksByTransitivity, 507.0ms TimeCoverageRelationStatistics Valid=776, Invalid=2530, Unknown=0, NotChecked=0, Total=3306 [2021-10-13 22:42:20,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4476 states. [2021-10-13 22:42:20,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4476 to 3403. [2021-10-13 22:42:20,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3403 states, 3402 states have (on average 2.7830687830687832) internal successors, (9468), 3402 states have internal predecessors, (9468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:42:20,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3403 states to 3403 states and 9468 transitions. [2021-10-13 22:42:20,036 INFO L78 Accepts]: Start accepts. Automaton has 3403 states and 9468 transitions. Word has length 125 [2021-10-13 22:42:20,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:42:20,036 INFO L470 AbstractCegarLoop]: Abstraction has 3403 states and 9468 transitions. [2021-10-13 22:42:20,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:42:20,036 INFO L276 IsEmpty]: Start isEmpty. Operand 3403 states and 9468 transitions. [2021-10-13 22:42:20,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-10-13 22:42:20,039 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:42:20,039 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:42:20,078 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (178)] Ended with exit code 0 [2021-10-13 22:42:20,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182,178 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:42:20,240 INFO L402 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:42:20,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:42:20,240 INFO L82 PathProgramCache]: Analyzing trace with hash 2051036071, now seen corresponding path program 175 times [2021-10-13 22:42:20,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:42:20,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831725029] [2021-10-13 22:42:20,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:42:20,240 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:42:20,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:42:20,513 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:42:20,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:42:20,513 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831725029] [2021-10-13 22:42:20,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831725029] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:42:20,513 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430562814] [2021-10-13 22:42:20,513 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:42:20,513 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:42:20,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:42:20,514 INFO L229 MonitoredProcess]: Starting monitored process 179 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:42:20,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (179)] Waiting until timeout for monitored process [2021-10-13 22:42:26,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:42:26,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-13 22:42:26,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:42:26,796 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:42:26,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430562814] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:42:26,797 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:42:26,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-10-13 22:42:26,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967434016] [2021-10-13 22:42:26,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-13 22:42:26,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:42:26,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-13 22:42:26,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2021-10-13 22:42:26,797 INFO L87 Difference]: Start difference. First operand 3403 states and 9468 transitions. Second operand has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:42:27,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:42:27,262 INFO L93 Difference]: Finished difference Result 4771 states and 12407 transitions. [2021-10-13 22:42:27,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-13 22:42:27,262 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-10-13 22:42:27,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:42:27,268 INFO L225 Difference]: With dead ends: 4771 [2021-10-13 22:42:27,268 INFO L226 Difference]: Without dead ends: 4501 [2021-10-13 22:42:27,269 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 804 ImplicationChecksByTransitivity, 452.2ms TimeCoverageRelationStatistics Valid=816, Invalid=2490, Unknown=0, NotChecked=0, Total=3306 [2021-10-13 22:42:27,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4501 states. [2021-10-13 22:42:27,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4501 to 3478. [2021-10-13 22:42:27,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3478 states, 3477 states have (on average 2.7877480586712684) internal successors, (9693), 3477 states have internal predecessors, (9693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:42:27,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3478 states to 3478 states and 9693 transitions. [2021-10-13 22:42:27,318 INFO L78 Accepts]: Start accepts. Automaton has 3478 states and 9693 transitions. Word has length 125 [2021-10-13 22:42:27,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:42:27,318 INFO L470 AbstractCegarLoop]: Abstraction has 3478 states and 9693 transitions. [2021-10-13 22:42:27,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:42:27,318 INFO L276 IsEmpty]: Start isEmpty. Operand 3478 states and 9693 transitions. [2021-10-13 22:42:27,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-10-13 22:42:27,322 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:42:27,322 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:42:27,363 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (179)] Ended with exit code 0 [2021-10-13 22:42:27,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183,179 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:42:27,522 INFO L402 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:42:27,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:42:27,522 INFO L82 PathProgramCache]: Analyzing trace with hash -457769833, now seen corresponding path program 176 times [2021-10-13 22:42:27,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:42:27,523 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760771053] [2021-10-13 22:42:27,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:42:27,523 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:42:27,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:42:27,876 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:42:27,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:42:27,876 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760771053] [2021-10-13 22:42:27,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760771053] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:42:27,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629936212] [2021-10-13 22:42:27,877 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:42:27,877 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:42:27,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:42:27,877 INFO L229 MonitoredProcess]: Starting monitored process 180 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:42:27,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (180)] Waiting until timeout for monitored process [2021-10-13 22:42:33,878 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:42:33,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:42:33,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-13 22:42:33,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:42:34,221 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:42:34,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629936212] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:42:34,222 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:42:34,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2021-10-13 22:42:34,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982100044] [2021-10-13 22:42:34,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 22:42:34,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:42:34,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 22:42:34,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=553, Unknown=0, NotChecked=0, Total=650 [2021-10-13 22:42:34,222 INFO L87 Difference]: Start difference. First operand 3478 states and 9693 transitions. Second operand has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:42:34,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:42:34,792 INFO L93 Difference]: Finished difference Result 4796 states and 12532 transitions. [2021-10-13 22:42:34,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-13 22:42:34,792 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-10-13 22:42:34,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:42:34,798 INFO L225 Difference]: With dead ends: 4796 [2021-10-13 22:42:34,799 INFO L226 Difference]: Without dead ends: 4526 [2021-10-13 22:42:34,799 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 829 ImplicationChecksByTransitivity, 575.4ms TimeCoverageRelationStatistics Valid=845, Invalid=2695, Unknown=0, NotChecked=0, Total=3540 [2021-10-13 22:42:34,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4526 states. [2021-10-13 22:42:34,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4526 to 3553. [2021-10-13 22:42:34,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3553 states, 3552 states have (on average 2.79222972972973) internal successors, (9918), 3552 states have internal predecessors, (9918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:42:34,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3553 states to 3553 states and 9918 transitions. [2021-10-13 22:42:34,848 INFO L78 Accepts]: Start accepts. Automaton has 3553 states and 9918 transitions. Word has length 125 [2021-10-13 22:42:34,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:42:34,848 INFO L470 AbstractCegarLoop]: Abstraction has 3553 states and 9918 transitions. [2021-10-13 22:42:34,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:42:34,849 INFO L276 IsEmpty]: Start isEmpty. Operand 3553 states and 9918 transitions. [2021-10-13 22:42:34,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-10-13 22:42:34,852 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:42:34,852 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:42:34,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (180)] Forceful destruction successful, exit code 0 [2021-10-13 22:42:35,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184,180 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:42:35,053 INFO L402 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:42:35,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:42:35,053 INFO L82 PathProgramCache]: Analyzing trace with hash -527951835, now seen corresponding path program 177 times [2021-10-13 22:42:35,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:42:35,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281402207] [2021-10-13 22:42:35,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:42:35,053 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:42:35,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:42:35,360 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:42:35,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:42:35,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281402207] [2021-10-13 22:42:35,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281402207] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:42:35,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985898232] [2021-10-13 22:42:35,361 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:42:35,361 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:42:35,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:42:35,362 INFO L229 MonitoredProcess]: Starting monitored process 181 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:42:35,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (181)] Waiting until timeout for monitored process [2021-10-13 22:42:41,378 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-10-13 22:42:41,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:42:41,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-13 22:42:41,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:42:41,697 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:42:41,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985898232] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:42:41,697 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:42:41,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-10-13 22:42:41,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803574932] [2021-10-13 22:42:41,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-13 22:42:41,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:42:41,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-13 22:42:41,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=500, Unknown=0, NotChecked=0, Total=600 [2021-10-13 22:42:41,698 INFO L87 Difference]: Start difference. First operand 3553 states and 9918 transitions. Second operand has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:42:42,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:42:42,206 INFO L93 Difference]: Finished difference Result 4821 states and 12657 transitions. [2021-10-13 22:42:42,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-13 22:42:42,206 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-10-13 22:42:42,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:42:42,212 INFO L225 Difference]: With dead ends: 4821 [2021-10-13 22:42:42,213 INFO L226 Difference]: Without dead ends: 4551 [2021-10-13 22:42:42,213 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 898 ImplicationChecksByTransitivity, 509.9ms TimeCoverageRelationStatistics Valid=899, Invalid=2641, Unknown=0, NotChecked=0, Total=3540 [2021-10-13 22:42:42,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4551 states. [2021-10-13 22:42:42,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4551 to 3628. [2021-10-13 22:42:42,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3628 states, 3627 states have (on average 2.796526054590571) internal successors, (10143), 3627 states have internal predecessors, (10143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:42:42,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3628 states to 3628 states and 10143 transitions. [2021-10-13 22:42:42,257 INFO L78 Accepts]: Start accepts. Automaton has 3628 states and 10143 transitions. Word has length 125 [2021-10-13 22:42:42,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:42:42,258 INFO L470 AbstractCegarLoop]: Abstraction has 3628 states and 10143 transitions. [2021-10-13 22:42:42,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:42:42,258 INFO L276 IsEmpty]: Start isEmpty. Operand 3628 states and 10143 transitions. [2021-10-13 22:42:42,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-10-13 22:42:42,261 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:42:42,261 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:42:42,302 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (181)] Forceful destruction successful, exit code 0 [2021-10-13 22:42:42,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185,181 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:42:42,462 INFO L402 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:42:42,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:42:42,462 INFO L82 PathProgramCache]: Analyzing trace with hash 346041621, now seen corresponding path program 178 times [2021-10-13 22:42:42,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:42:42,462 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474444621] [2021-10-13 22:42:42,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:42:42,462 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:42:42,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:42:42,975 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:42:42,975 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:42:42,975 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474444621] [2021-10-13 22:42:42,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474444621] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:42:42,975 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081210984] [2021-10-13 22:42:42,975 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:42:42,975 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:42:42,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:42:42,976 INFO L229 MonitoredProcess]: Starting monitored process 182 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:42:43,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (182)] Waiting until timeout for monitored process [2021-10-13 22:42:49,017 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:42:49,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:42:49,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-13 22:42:49,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:42:49,345 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:42:49,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2081210984] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:42:49,345 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:42:49,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2021-10-13 22:42:49,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642033557] [2021-10-13 22:42:49,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 22:42:49,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:42:49,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 22:42:49,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=550, Unknown=0, NotChecked=0, Total=650 [2021-10-13 22:42:49,346 INFO L87 Difference]: Start difference. First operand 3628 states and 10143 transitions. Second operand has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:42:50,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:42:50,058 INFO L93 Difference]: Finished difference Result 4846 states and 12782 transitions. [2021-10-13 22:42:50,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-13 22:42:50,058 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-10-13 22:42:50,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:42:50,064 INFO L225 Difference]: With dead ends: 4846 [2021-10-13 22:42:50,064 INFO L226 Difference]: Without dead ends: 4576 [2021-10-13 22:42:50,064 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 926 ImplicationChecksByTransitivity, 752.9ms TimeCoverageRelationStatistics Valid=930, Invalid=2852, Unknown=0, NotChecked=0, Total=3782 [2021-10-13 22:42:50,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4576 states. [2021-10-13 22:42:50,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4576 to 3703. [2021-10-13 22:42:50,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3703 states, 3702 states have (on average 2.80064829821718) internal successors, (10368), 3702 states have internal predecessors, (10368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:42:50,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3703 states to 3703 states and 10368 transitions. [2021-10-13 22:42:50,110 INFO L78 Accepts]: Start accepts. Automaton has 3703 states and 10368 transitions. Word has length 125 [2021-10-13 22:42:50,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:42:50,110 INFO L470 AbstractCegarLoop]: Abstraction has 3703 states and 10368 transitions. [2021-10-13 22:42:50,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:42:50,110 INFO L276 IsEmpty]: Start isEmpty. Operand 3703 states and 10368 transitions. [2021-10-13 22:42:50,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-10-13 22:42:50,114 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:42:50,114 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:42:50,154 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (182)] Ended with exit code 0 [2021-10-13 22:42:50,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 182 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable186 [2021-10-13 22:42:50,315 INFO L402 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:42:50,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:42:50,315 INFO L82 PathProgramCache]: Analyzing trace with hash 841335331, now seen corresponding path program 179 times [2021-10-13 22:42:50,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:42:50,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698406506] [2021-10-13 22:42:50,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:42:50,315 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:42:50,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:42:50,594 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:42:50,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:42:50,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698406506] [2021-10-13 22:42:50,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698406506] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:42:50,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180303910] [2021-10-13 22:42:50,595 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:42:50,595 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:42:50,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:42:50,596 INFO L229 MonitoredProcess]: Starting monitored process 183 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:42:50,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (183)] Waiting until timeout for monitored process [2021-10-13 22:42:56,658 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-10-13 22:42:56,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:42:56,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-13 22:42:56,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:42:57,049 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:42:57,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180303910] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:42:57,049 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:42:57,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-10-13 22:42:57,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756846813] [2021-10-13 22:42:57,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-13 22:42:57,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:42:57,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-13 22:42:57,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=494, Unknown=0, NotChecked=0, Total=600 [2021-10-13 22:42:57,050 INFO L87 Difference]: Start difference. First operand 3703 states and 10368 transitions. Second operand has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:42:57,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:42:57,617 INFO L93 Difference]: Finished difference Result 4871 states and 12907 transitions. [2021-10-13 22:42:57,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-13 22:42:57,617 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-10-13 22:42:57,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:42:57,624 INFO L225 Difference]: With dead ends: 4871 [2021-10-13 22:42:57,624 INFO L226 Difference]: Without dead ends: 4601 [2021-10-13 22:42:57,624 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 996 ImplicationChecksByTransitivity, 502.8ms TimeCoverageRelationStatistics Valid=998, Invalid=2784, Unknown=0, NotChecked=0, Total=3782 [2021-10-13 22:42:57,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4601 states. [2021-10-13 22:42:57,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4601 to 3778. [2021-10-13 22:42:57,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3778 states, 3777 states have (on average 2.8046068308181096) internal successors, (10593), 3777 states have internal predecessors, (10593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:42:57,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3778 states to 3778 states and 10593 transitions. [2021-10-13 22:42:57,682 INFO L78 Accepts]: Start accepts. Automaton has 3778 states and 10593 transitions. Word has length 125 [2021-10-13 22:42:57,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:42:57,683 INFO L470 AbstractCegarLoop]: Abstraction has 3778 states and 10593 transitions. [2021-10-13 22:42:57,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:42:57,683 INFO L276 IsEmpty]: Start isEmpty. Operand 3778 states and 10593 transitions. [2021-10-13 22:42:57,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-10-13 22:42:57,687 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:42:57,687 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:42:57,728 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (183)] Forceful destruction successful, exit code 0 [2021-10-13 22:42:57,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187,183 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:42:57,888 INFO L402 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:42:57,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:42:57,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1703525613, now seen corresponding path program 180 times [2021-10-13 22:42:57,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:42:57,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886479615] [2021-10-13 22:42:57,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:42:57,888 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:42:57,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:42:58,152 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:42:58,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:42:58,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886479615] [2021-10-13 22:42:58,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886479615] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:42:58,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635328482] [2021-10-13 22:42:58,152 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:42:58,152 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:42:58,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:42:58,155 INFO L229 MonitoredProcess]: Starting monitored process 184 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:42:58,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (184)] Waiting until timeout for monitored process [2021-10-13 22:43:04,185 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-10-13 22:43:04,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:43:04,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-13 22:43:04,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:43:04,491 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:43:04,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1635328482] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:43:04,491 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:43:04,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2021-10-13 22:43:04,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064628564] [2021-10-13 22:43:04,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 22:43:04,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:43:04,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 22:43:04,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=543, Unknown=0, NotChecked=0, Total=650 [2021-10-13 22:43:04,492 INFO L87 Difference]: Start difference. First operand 3778 states and 10593 transitions. Second operand has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:43:05,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:43:05,246 INFO L93 Difference]: Finished difference Result 4896 states and 13032 transitions. [2021-10-13 22:43:05,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-13 22:43:05,246 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-10-13 22:43:05,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:43:05,252 INFO L225 Difference]: With dead ends: 4896 [2021-10-13 22:43:05,252 INFO L226 Difference]: Without dead ends: 4626 [2021-10-13 22:43:05,253 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1027 ImplicationChecksByTransitivity, 613.6ms TimeCoverageRelationStatistics Valid=1031, Invalid=3001, Unknown=0, NotChecked=0, Total=4032 [2021-10-13 22:43:05,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4626 states. [2021-10-13 22:43:05,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4626 to 3853. [2021-10-13 22:43:05,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3853 states, 3852 states have (on average 2.808411214953271) internal successors, (10818), 3852 states have internal predecessors, (10818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:43:05,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3853 states to 3853 states and 10818 transitions. [2021-10-13 22:43:05,334 INFO L78 Accepts]: Start accepts. Automaton has 3853 states and 10818 transitions. Word has length 125 [2021-10-13 22:43:05,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:43:05,334 INFO L470 AbstractCegarLoop]: Abstraction has 3853 states and 10818 transitions. [2021-10-13 22:43:05,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:43:05,335 INFO L276 IsEmpty]: Start isEmpty. Operand 3853 states and 10818 transitions. [2021-10-13 22:43:05,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-10-13 22:43:05,339 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:43:05,339 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:43:05,380 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (184)] Ended with exit code 0 [2021-10-13 22:43:05,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 184 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable188 [2021-10-13 22:43:05,540 INFO L402 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:43:05,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:43:05,540 INFO L82 PathProgramCache]: Analyzing trace with hash -793628255, now seen corresponding path program 181 times [2021-10-13 22:43:05,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:43:05,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244463000] [2021-10-13 22:43:05,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:43:05,540 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:43:05,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:43:05,839 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:43:05,840 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:43:05,840 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244463000] [2021-10-13 22:43:05,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244463000] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:43:05,840 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499329135] [2021-10-13 22:43:05,840 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:43:05,840 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:43:05,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:43:05,842 INFO L229 MonitoredProcess]: Starting monitored process 185 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:43:05,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (185)] Waiting until timeout for monitored process [2021-10-13 22:43:11,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:43:11,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-13 22:43:11,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:43:12,154 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:43:12,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499329135] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:43:12,155 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:43:12,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-10-13 22:43:12,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290757417] [2021-10-13 22:43:12,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-13 22:43:12,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:43:12,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-13 22:43:12,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=484, Unknown=0, NotChecked=0, Total=600 [2021-10-13 22:43:12,155 INFO L87 Difference]: Start difference. First operand 3853 states and 10818 transitions. Second operand has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:43:12,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:43:12,724 INFO L93 Difference]: Finished difference Result 4966 states and 13277 transitions. [2021-10-13 22:43:12,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-13 22:43:12,724 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-10-13 22:43:12,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:43:12,731 INFO L225 Difference]: With dead ends: 4966 [2021-10-13 22:43:12,731 INFO L226 Difference]: Without dead ends: 4696 [2021-10-13 22:43:12,732 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1098 ImplicationChecksByTransitivity, 539.9ms TimeCoverageRelationStatistics Valid=1113, Invalid=2919, Unknown=0, NotChecked=0, Total=4032 [2021-10-13 22:43:12,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4696 states. [2021-10-13 22:43:12,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4696 to 3928. [2021-10-13 22:43:12,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3928 states, 3927 states have (on average 2.8158899923605807) internal successors, (11058), 3927 states have internal predecessors, (11058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:43:12,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3928 states to 3928 states and 11058 transitions. [2021-10-13 22:43:12,906 INFO L78 Accepts]: Start accepts. Automaton has 3928 states and 11058 transitions. Word has length 125 [2021-10-13 22:43:12,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:43:12,906 INFO L470 AbstractCegarLoop]: Abstraction has 3928 states and 11058 transitions. [2021-10-13 22:43:12,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:43:12,906 INFO L276 IsEmpty]: Start isEmpty. Operand 3928 states and 11058 transitions. [2021-10-13 22:43:12,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-10-13 22:43:12,910 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:43:12,910 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:43:12,951 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (185)] Ended with exit code 0 [2021-10-13 22:43:13,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 185 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable189 [2021-10-13 22:43:13,111 INFO L402 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:43:13,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:43:13,111 INFO L82 PathProgramCache]: Analyzing trace with hash -661512559, now seen corresponding path program 182 times [2021-10-13 22:43:13,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:43:13,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722712546] [2021-10-13 22:43:13,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:43:13,111 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:43:13,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:43:13,441 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:43:13,442 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:43:13,442 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722712546] [2021-10-13 22:43:13,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722712546] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:43:13,442 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51780205] [2021-10-13 22:43:13,442 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:43:13,442 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:43:13,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:43:13,443 INFO L229 MonitoredProcess]: Starting monitored process 186 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:43:13,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (186)] Waiting until timeout for monitored process [2021-10-13 22:43:19,504 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:43:19,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:43:19,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-13 22:43:19,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:43:19,784 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:43:19,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51780205] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:43:19,784 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:43:19,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2021-10-13 22:43:19,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021674485] [2021-10-13 22:43:19,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 22:43:19,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:43:19,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 22:43:19,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2021-10-13 22:43:19,785 INFO L87 Difference]: Start difference. First operand 3928 states and 11058 transitions. Second operand has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2021-10-13 22:43:20,148 WARN L223 SmtUtils]: Removed 3 from assertion stack [2021-10-13 22:43:20,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-13 22:43:20,149 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 22:43:20,152 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (186)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-13 22:43:20,163 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-13 22:43:20,192 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (186)] Forceful destruction successful, exit code 0 [2021-10-13 22:43:20,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190,186 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:43:20,363 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (3928states) and FLOYD_HOARE automaton (currently 26 states, 26 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 19 for 7ms.. [2021-10-13 22:43:20,365 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-13 22:43:20,365 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-13 22:43:20,368 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-13 22:43:20,368 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 22:43:20,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 10:43:20 BasicIcfg [2021-10-13 22:43:20,370 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 22:43:20,371 INFO L168 Benchmark]: Toolchain (without parser) took 688461.72 ms. Allocated memory was 195.0 MB in the beginning and 1.5 GB in the end (delta: 1.3 GB). Free memory was 139.6 MB in the beginning and 827.1 MB in the end (delta: -687.5 MB). Peak memory consumption was 638.7 MB. Max. memory is 8.0 GB. [2021-10-13 22:43:20,371 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 195.0 MB. Free memory is still 157.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-13 22:43:20,371 INFO L168 Benchmark]: CACSL2BoogieTranslator took 349.19 ms. Allocated memory was 195.0 MB in the beginning and 290.5 MB in the end (delta: 95.4 MB). Free memory was 139.5 MB in the beginning and 251.2 MB in the end (delta: -111.7 MB). Peak memory consumption was 11.1 MB. Max. memory is 8.0 GB. [2021-10-13 22:43:20,371 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.64 ms. Allocated memory is still 290.5 MB. Free memory was 251.2 MB in the beginning and 249.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-13 22:43:20,371 INFO L168 Benchmark]: Boogie Preprocessor took 28.15 ms. Allocated memory is still 290.5 MB. Free memory was 249.1 MB in the beginning and 248.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-13 22:43:20,371 INFO L168 Benchmark]: RCFGBuilder took 272.81 ms. Allocated memory is still 290.5 MB. Free memory was 248.1 MB in the beginning and 236.6 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-10-13 22:43:20,372 INFO L168 Benchmark]: TraceAbstraction took 687765.26 ms. Allocated memory was 290.5 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 235.9 MB in the beginning and 827.1 MB in the end (delta: -591.2 MB). Peak memory consumption was 639.1 MB. Max. memory is 8.0 GB. [2021-10-13 22:43:20,372 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 195.0 MB. Free memory is still 157.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 349.19 ms. Allocated memory was 195.0 MB in the beginning and 290.5 MB in the end (delta: 95.4 MB). Free memory was 139.5 MB in the beginning and 251.2 MB in the end (delta: -111.7 MB). Peak memory consumption was 11.1 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 40.64 ms. Allocated memory is still 290.5 MB. Free memory was 251.2 MB in the beginning and 249.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 28.15 ms. Allocated memory is still 290.5 MB. Free memory was 249.1 MB in the beginning and 248.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 272.81 ms. Allocated memory is still 290.5 MB. Free memory was 248.1 MB in the beginning and 236.6 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 687765.26 ms. Allocated memory was 290.5 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 235.9 MB in the beginning and 827.1 MB in the end (delta: -591.2 MB). Peak memory consumption was 639.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 722]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (3928states) and FLOYD_HOARE automaton (currently 26 states, 26 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 19 for 7ms.. - TimeoutResultAtElement [Line: 713]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (3928states) and FLOYD_HOARE automaton (currently 26 states, 26 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 19 for 7ms.. - TimeoutResultAtElement [Line: 714]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (3928states) and FLOYD_HOARE automaton (currently 26 states, 26 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 19 for 7ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 84 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 687697.0ms, OverallIterations: 191, TraceHistogramMax: 10, EmptinessCheckTime: 440.1ms, AutomataDifference: 63983.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 65.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 18362 SDtfs, 131091 SDslu, 151855 SDs, 0 SdLazy, 27716 SolverSat, 18511 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12540.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25261 GetRequests, 17615 SyntacticMatches, 0 SemanticMatches, 7645 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78853 ImplicationChecksByTransitivity, 60179.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=4058occurred in iteration=174, InterpolantAutomatonStates: 5689, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 6693.8ms AutomataMinimizationTime, 190 MinimizatonAttempts, 153519 StatesRemovedByMinimization, 190 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1548.1ms SsaConstructionTime, 4410.5ms SatisfiabilityAnalysisTime, 74239.0ms InterpolantComputationTime, 35518 NumberOfCodeBlocks, 35518 NumberOfCodeBlocksAsserted, 969 NumberOfCheckSat, 35142 ConstructedInterpolants, 0 QuantifiedInterpolants, 145288 SizeOfPredicates, 2612 NumberOfNonLiveVariables, 38222 ConjunctsInSsa, 3537 ConjunctsInUnsatCore, 376 InterpolantComputations, 6 PerfectInterpolantSequences, 0/63796 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown