/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/weaver/popl20-mult-4.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-15 14:22:27,263 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-15 14:22:27,264 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-15 14:22:27,309 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-15 14:22:27,345 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-15 14:22:27,345 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-15 14:22:27,346 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-15 14:22:27,349 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 [2022-03-15 14:22:27,373 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-15 14:22:27,373 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-15 14:22:27,373 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-15 14:22:27,373 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-15 14:22:27,374 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-15 14:22:27,374 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-15 14:22:27,374 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-15 14:22:27,374 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-15 14:22:27,375 INFO L138 SettingsManager]: * Use SBE=true [2022-03-15 14:22:27,375 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-15 14:22:27,375 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-15 14:22:27,375 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-15 14:22:27,375 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-15 14:22:27,375 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-15 14:22:27,376 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-15 14:22:27,376 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-15 14:22:27,376 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-15 14:22:27,376 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-15 14:22:27,376 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-15 14:22:27,376 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-15 14:22:27,376 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-15 14:22:27,376 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-15 14:22:27,376 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-15 14:22:27,377 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-15 14:22:27,377 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-15 14:22:27,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 14:22:27,378 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-15 14:22:27,378 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-15 14:22:27,378 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-15 14:22:27,378 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-15 14:22:27,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-15 14:22:27,378 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-15 14:22:27,378 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-15 14:22:27,378 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-15 14:22:27,541 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-15 14:22:27,555 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-15 14:22:27,557 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-15 14:22:27,558 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-15 14:22:27,559 INFO L275 PluginConnector]: CDTParser initialized [2022-03-15 14:22:27,560 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-mult-4.wvr.c [2022-03-15 14:22:27,603 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95d8d89fc/764b319941024765b4ec59babf3afecc/FLAG8494f481c [2022-03-15 14:22:27,947 INFO L306 CDTParser]: Found 1 translation units. [2022-03-15 14:22:27,948 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-mult-4.wvr.c [2022-03-15 14:22:27,952 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95d8d89fc/764b319941024765b4ec59babf3afecc/FLAG8494f481c [2022-03-15 14:22:27,963 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95d8d89fc/764b319941024765b4ec59babf3afecc [2022-03-15 14:22:27,965 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-15 14:22:27,966 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-15 14:22:27,967 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-15 14:22:27,967 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-15 14:22:27,969 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-15 14:22:27,969 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 02:22:27" (1/1) ... [2022-03-15 14:22:27,970 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@541dd4ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:22:27, skipping insertion in model container [2022-03-15 14:22:27,970 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 02:22:27" (1/1) ... [2022-03-15 14:22:27,975 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-15 14:22:27,991 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-15 14:22:28,124 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-mult-4.wvr.c[2612,2625] [2022-03-15 14:22:28,126 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-15 14:22:28,130 INFO L203 MainTranslator]: Completed pre-run [2022-03-15 14:22:28,149 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-mult-4.wvr.c[2612,2625] [2022-03-15 14:22:28,150 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-15 14:22:28,159 INFO L208 MainTranslator]: Completed translation [2022-03-15 14:22:28,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:22:28 WrapperNode [2022-03-15 14:22:28,159 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-15 14:22:28,160 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-15 14:22:28,160 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-15 14:22:28,160 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-15 14:22:28,167 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:22:28" (1/1) ... [2022-03-15 14:22:28,172 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:22:28" (1/1) ... [2022-03-15 14:22:28,190 INFO L137 Inliner]: procedures = 23, calls = 42, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 117 [2022-03-15 14:22:28,190 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-15 14:22:28,191 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-15 14:22:28,191 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-15 14:22:28,191 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-15 14:22:28,197 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:22:28" (1/1) ... [2022-03-15 14:22:28,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:22:28" (1/1) ... [2022-03-15 14:22:28,201 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:22:28" (1/1) ... [2022-03-15 14:22:28,201 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:22:28" (1/1) ... [2022-03-15 14:22:28,205 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:22:28" (1/1) ... [2022-03-15 14:22:28,208 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:22:28" (1/1) ... [2022-03-15 14:22:28,209 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:22:28" (1/1) ... [2022-03-15 14:22:28,211 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-15 14:22:28,211 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-15 14:22:28,211 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-15 14:22:28,211 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-15 14:22:28,212 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:22:28" (1/1) ... [2022-03-15 14:22:28,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 14:22:28,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:22:28,254 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) [2022-03-15 14:22:28,261 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 [2022-03-15 14:22:28,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-15 14:22:28,292 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-15 14:22:28,292 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-15 14:22:28,292 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-15 14:22:28,292 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-15 14:22:28,292 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-03-15 14:22:28,292 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-03-15 14:22:28,292 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-03-15 14:22:28,292 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-03-15 14:22:28,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-15 14:22:28,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-15 14:22:28,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-15 14:22:28,294 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-03-15 14:22:28,294 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-03-15 14:22:28,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-15 14:22:28,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-15 14:22:28,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-15 14:22:28,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-15 14:22:28,295 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-15 14:22:28,355 INFO L234 CfgBuilder]: Building ICFG [2022-03-15 14:22:28,356 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-15 14:22:28,509 INFO L275 CfgBuilder]: Performing block encoding [2022-03-15 14:22:28,543 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-15 14:22:28,544 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-03-15 14:22:28,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 02:22:28 BoogieIcfgContainer [2022-03-15 14:22:28,546 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-15 14:22:28,547 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-15 14:22:28,547 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-15 14:22:28,549 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-15 14:22:28,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.03 02:22:27" (1/3) ... [2022-03-15 14:22:28,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c585953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 02:22:28, skipping insertion in model container [2022-03-15 14:22:28,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:22:28" (2/3) ... [2022-03-15 14:22:28,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c585953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 02:22:28, skipping insertion in model container [2022-03-15 14:22:28,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 02:22:28" (3/3) ... [2022-03-15 14:22:28,551 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-mult-4.wvr.c [2022-03-15 14:22:28,555 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-15 14:22:28,555 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-15 14:22:28,555 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-15 14:22:28,555 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-15 14:22:28,597 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,597 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,597 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,598 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,598 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,599 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,599 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,599 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,599 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,600 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,600 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,600 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,600 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,600 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,601 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,601 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,601 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,601 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,601 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,601 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,602 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,602 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,602 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,603 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,603 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,603 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,604 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,604 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,604 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,604 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,605 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,605 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,605 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,605 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,606 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,606 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,606 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,606 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,607 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,607 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,607 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,607 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,607 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,607 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,608 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,608 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,608 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,609 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,609 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,609 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,610 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,610 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,610 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,610 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,611 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,611 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,611 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,611 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,611 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,611 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,612 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,612 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,612 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,612 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,612 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~i~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,613 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~i~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,613 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~i~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,613 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~i~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,614 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~i~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,614 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~i~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,614 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,615 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,615 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,615 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,615 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,615 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,616 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,616 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,616 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~i~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,617 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,617 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~i~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,617 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,617 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,617 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~i~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,618 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,618 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~i~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,618 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,618 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,620 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,621 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,621 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,621 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,621 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,621 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,622 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,622 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,622 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,622 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,623 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,623 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,623 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,623 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,624 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~i~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,624 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,624 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,624 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,625 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,625 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:22:28,630 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-03-15 14:22:28,664 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-15 14:22:28,669 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, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, 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, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-15 14:22:28,669 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-03-15 14:22:28,678 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 136 places, 133 transitions, 298 flow [2022-03-15 14:22:29,763 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 33659 states, 33658 states have (on average 4.971180699982174) internal successors, (167320), 33658 states have internal predecessors, (167320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:22:29,826 INFO L276 IsEmpty]: Start isEmpty. Operand has 33659 states, 33658 states have (on average 4.971180699982174) internal successors, (167320), 33658 states have internal predecessors, (167320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:22:30,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-03-15 14:22:30,089 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:22:30,089 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:22:30,090 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 14:22:30,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:22:30,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1708599078, now seen corresponding path program 1 times [2022-03-15 14:22:30,106 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:22:30,107 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644821285] [2022-03-15 14:22:30,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:22:30,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:22:30,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:22:30,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:22:30,314 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:22:30,315 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644821285] [2022-03-15 14:22:30,315 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644821285] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:22:30,315 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:22:30,315 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-15 14:22:30,316 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541045117] [2022-03-15 14:22:30,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:22:30,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-03-15 14:22:30,320 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:22:30,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-03-15 14:22:30,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-15 14:22:30,419 INFO L87 Difference]: Start difference. First operand has 33659 states, 33658 states have (on average 4.971180699982174) internal successors, (167320), 33658 states have internal predecessors, (167320), 0 states have call successors, (0), 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 2 states, 2 states have (on average 44.0) internal successors, (88), 2 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) [2022-03-15 14:22:30,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:22:30,971 INFO L93 Difference]: Finished difference Result 33659 states and 153296 transitions. [2022-03-15 14:22:30,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-15 14:22:30,973 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 44.0) internal successors, (88), 2 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 88 [2022-03-15 14:22:30,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:22:31,339 INFO L225 Difference]: With dead ends: 33659 [2022-03-15 14:22:31,340 INFO L226 Difference]: Without dead ends: 33657 [2022-03-15 14:22:31,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-15 14:22:31,343 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:22:31,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 100 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 14:22:31,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33657 states. [2022-03-15 14:22:32,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33657 to 33657. [2022-03-15 14:22:32,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33657 states, 33656 states have (on average 4.554730211552175) internal successors, (153294), 33656 states have internal predecessors, (153294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:22:32,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33657 states to 33657 states and 153294 transitions. [2022-03-15 14:22:32,989 INFO L78 Accepts]: Start accepts. Automaton has 33657 states and 153294 transitions. Word has length 88 [2022-03-15 14:22:32,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:22:32,989 INFO L470 AbstractCegarLoop]: Abstraction has 33657 states and 153294 transitions. [2022-03-15 14:22:32,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 44.0) internal successors, (88), 2 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) [2022-03-15 14:22:32,989 INFO L276 IsEmpty]: Start isEmpty. Operand 33657 states and 153294 transitions. [2022-03-15 14:22:33,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-03-15 14:22:33,109 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:22:33,109 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:22:33,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-15 14:22:33,109 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 14:22:33,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:22:33,110 INFO L85 PathProgramCache]: Analyzing trace with hash 560306940, now seen corresponding path program 1 times [2022-03-15 14:22:33,110 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:22:33,111 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354476059] [2022-03-15 14:22:33,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:22:33,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:22:33,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:22:33,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:22:33,309 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:22:33,309 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354476059] [2022-03-15 14:22:33,309 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354476059] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:22:33,309 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:22:33,309 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-15 14:22:33,309 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669392655] [2022-03-15 14:22:33,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:22:33,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-15 14:22:33,310 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:22:33,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-15 14:22:33,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-15 14:22:33,311 INFO L87 Difference]: Start difference. First operand 33657 states and 153294 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 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) [2022-03-15 14:22:33,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:22:33,791 INFO L93 Difference]: Finished difference Result 40731 states and 182634 transitions. [2022-03-15 14:22:33,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-15 14:22:33,791 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 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 88 [2022-03-15 14:22:33,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:22:34,168 INFO L225 Difference]: With dead ends: 40731 [2022-03-15 14:22:34,168 INFO L226 Difference]: Without dead ends: 38709 [2022-03-15 14:22:34,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-15 14:22:34,171 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 8 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:22:34,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 347 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:22:34,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38709 states. [2022-03-15 14:22:35,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38709 to 38277. [2022-03-15 14:22:35,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38277 states, 38276 states have (on average 4.508229700073153) internal successors, (172557), 38276 states have internal predecessors, (172557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:22:35,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38277 states to 38277 states and 172557 transitions. [2022-03-15 14:22:35,575 INFO L78 Accepts]: Start accepts. Automaton has 38277 states and 172557 transitions. Word has length 88 [2022-03-15 14:22:35,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:22:35,575 INFO L470 AbstractCegarLoop]: Abstraction has 38277 states and 172557 transitions. [2022-03-15 14:22:35,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 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) [2022-03-15 14:22:35,576 INFO L276 IsEmpty]: Start isEmpty. Operand 38277 states and 172557 transitions. [2022-03-15 14:22:35,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-03-15 14:22:35,880 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:22:35,880 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:22:35,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-15 14:22:35,881 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 14:22:35,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:22:35,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1145915436, now seen corresponding path program 1 times [2022-03-15 14:22:35,882 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:22:35,882 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546198274] [2022-03-15 14:22:35,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:22:35,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:22:35,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:22:36,058 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:22:36,059 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:22:36,059 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546198274] [2022-03-15 14:22:36,059 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546198274] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:22:36,059 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:22:36,059 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-15 14:22:36,059 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381433940] [2022-03-15 14:22:36,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:22:36,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-15 14:22:36,060 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:22:36,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-15 14:22:36,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-15 14:22:36,060 INFO L87 Difference]: Start difference. First operand 38277 states and 172557 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:22:36,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:22:36,810 INFO L93 Difference]: Finished difference Result 63219 states and 280029 transitions. [2022-03-15 14:22:36,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-15 14:22:36,813 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2022-03-15 14:22:36,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:22:37,356 INFO L225 Difference]: With dead ends: 63219 [2022-03-15 14:22:37,357 INFO L226 Difference]: Without dead ends: 61095 [2022-03-15 14:22:37,371 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-03-15 14:22:37,372 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 136 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:22:37,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 556 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:22:37,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61095 states. [2022-03-15 14:22:38,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61095 to 50217. [2022-03-15 14:22:38,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50217 states, 50216 states have (on average 4.463278636291222) internal successors, (224128), 50216 states have internal predecessors, (224128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:22:39,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50217 states to 50217 states and 224128 transitions. [2022-03-15 14:22:39,166 INFO L78 Accepts]: Start accepts. Automaton has 50217 states and 224128 transitions. Word has length 93 [2022-03-15 14:22:39,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:22:39,166 INFO L470 AbstractCegarLoop]: Abstraction has 50217 states and 224128 transitions. [2022-03-15 14:22:39,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:22:39,167 INFO L276 IsEmpty]: Start isEmpty. Operand 50217 states and 224128 transitions. [2022-03-15 14:22:39,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-03-15 14:22:39,330 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:22:39,330 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:22:39,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-15 14:22:39,331 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 14:22:39,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:22:39,331 INFO L85 PathProgramCache]: Analyzing trace with hash -697904180, now seen corresponding path program 1 times [2022-03-15 14:22:39,331 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:22:39,331 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269556349] [2022-03-15 14:22:39,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:22:39,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:22:39,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:22:39,426 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:22:39,426 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:22:39,426 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269556349] [2022-03-15 14:22:39,426 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269556349] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:22:39,426 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:22:39,426 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-15 14:22:39,426 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935346238] [2022-03-15 14:22:39,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:22:39,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-15 14:22:39,428 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:22:39,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-15 14:22:39,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-15 14:22:39,429 INFO L87 Difference]: Start difference. First operand 50217 states and 224128 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:22:40,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:22:40,175 INFO L93 Difference]: Finished difference Result 71756 states and 319699 transitions. [2022-03-15 14:22:40,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-15 14:22:40,180 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2022-03-15 14:22:40,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:22:40,679 INFO L225 Difference]: With dead ends: 71756 [2022-03-15 14:22:40,680 INFO L226 Difference]: Without dead ends: 69278 [2022-03-15 14:22:40,680 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-15 14:22:40,680 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 110 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:22:40,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 329 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:22:40,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69278 states. [2022-03-15 14:22:42,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69278 to 53251. [2022-03-15 14:22:42,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53251 states, 53250 states have (on average 4.474985915492958) internal successors, (238293), 53250 states have internal predecessors, (238293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:22:42,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53251 states to 53251 states and 238293 transitions. [2022-03-15 14:22:42,760 INFO L78 Accepts]: Start accepts. Automaton has 53251 states and 238293 transitions. Word has length 93 [2022-03-15 14:22:42,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:22:42,760 INFO L470 AbstractCegarLoop]: Abstraction has 53251 states and 238293 transitions. [2022-03-15 14:22:42,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:22:42,760 INFO L276 IsEmpty]: Start isEmpty. Operand 53251 states and 238293 transitions. [2022-03-15 14:22:42,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-03-15 14:22:42,902 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:22:42,903 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:22:42,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-15 14:22:42,903 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 14:22:42,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:22:42,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1068497080, now seen corresponding path program 2 times [2022-03-15 14:22:42,903 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:22:42,904 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421630508] [2022-03-15 14:22:42,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:22:42,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:22:42,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:22:42,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:22:42,973 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:22:42,973 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421630508] [2022-03-15 14:22:42,973 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421630508] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:22:42,973 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:22:42,973 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-15 14:22:42,973 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893020270] [2022-03-15 14:22:42,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:22:42,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-15 14:22:42,974 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:22:42,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-15 14:22:42,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-15 14:22:42,974 INFO L87 Difference]: Start difference. First operand 53251 states and 238293 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:22:44,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:22:44,206 INFO L93 Difference]: Finished difference Result 89701 states and 395838 transitions. [2022-03-15 14:22:44,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-15 14:22:44,206 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2022-03-15 14:22:44,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:22:44,655 INFO L225 Difference]: With dead ends: 89701 [2022-03-15 14:22:44,656 INFO L226 Difference]: Without dead ends: 88765 [2022-03-15 14:22:44,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-15 14:22:44,656 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 133 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:22:44,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 372 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:22:44,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88765 states. [2022-03-15 14:22:46,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88765 to 63121. [2022-03-15 14:22:46,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63121 states, 63120 states have (on average 4.501489226869455) internal successors, (284134), 63120 states have internal predecessors, (284134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:22:47,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63121 states to 63121 states and 284134 transitions. [2022-03-15 14:22:47,547 INFO L78 Accepts]: Start accepts. Automaton has 63121 states and 284134 transitions. Word has length 93 [2022-03-15 14:22:47,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:22:47,547 INFO L470 AbstractCegarLoop]: Abstraction has 63121 states and 284134 transitions. [2022-03-15 14:22:47,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:22:47,548 INFO L276 IsEmpty]: Start isEmpty. Operand 63121 states and 284134 transitions. [2022-03-15 14:22:47,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-03-15 14:22:47,735 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:22:47,735 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:22:47,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-15 14:22:47,736 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 14:22:47,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:22:47,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1833939858, now seen corresponding path program 3 times [2022-03-15 14:22:47,736 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:22:47,738 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257295326] [2022-03-15 14:22:47,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:22:47,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:22:47,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:22:47,835 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:22:47,835 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:22:47,835 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257295326] [2022-03-15 14:22:47,835 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257295326] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:22:47,836 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:22:47,836 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-15 14:22:47,836 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652438951] [2022-03-15 14:22:47,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:22:47,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-15 14:22:47,837 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:22:47,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-15 14:22:47,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-15 14:22:47,838 INFO L87 Difference]: Start difference. First operand 63121 states and 284134 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:22:48,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:22:48,691 INFO L93 Difference]: Finished difference Result 76706 states and 343340 transitions. [2022-03-15 14:22:48,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-15 14:22:48,695 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2022-03-15 14:22:48,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:22:49,134 INFO L225 Difference]: With dead ends: 76706 [2022-03-15 14:22:49,134 INFO L226 Difference]: Without dead ends: 75467 [2022-03-15 14:22:49,134 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-15 14:22:49,135 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 103 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:22:49,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 289 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 14:22:49,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75467 states. [2022-03-15 14:22:50,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75467 to 51516. [2022-03-15 14:22:50,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51516 states, 51515 states have (on average 4.475511986799961) internal successors, (230556), 51515 states have internal predecessors, (230556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:22:51,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51516 states to 51516 states and 230556 transitions. [2022-03-15 14:22:51,243 INFO L78 Accepts]: Start accepts. Automaton has 51516 states and 230556 transitions. Word has length 93 [2022-03-15 14:22:51,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:22:51,244 INFO L470 AbstractCegarLoop]: Abstraction has 51516 states and 230556 transitions. [2022-03-15 14:22:51,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:22:51,244 INFO L276 IsEmpty]: Start isEmpty. Operand 51516 states and 230556 transitions. [2022-03-15 14:22:51,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-03-15 14:22:51,664 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:22:51,665 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:22:51,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-15 14:22:51,665 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 14:22:51,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:22:51,666 INFO L85 PathProgramCache]: Analyzing trace with hash 2054734952, now seen corresponding path program 1 times [2022-03-15 14:22:51,666 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:22:51,666 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949220088] [2022-03-15 14:22:51,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:22:51,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:22:51,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:22:51,782 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:22:51,782 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:22:51,783 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949220088] [2022-03-15 14:22:51,783 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949220088] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:22:51,783 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359178245] [2022-03-15 14:22:51,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:22:51,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:22:51,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:22:51,785 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) [2022-03-15 14:22:51,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-15 14:22:51,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:22:51,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-15 14:22:51,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:22:52,138 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:22:52,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:22:52,293 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:22:52,293 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359178245] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-15 14:22:52,293 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-15 14:22:52,293 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 5] total 7 [2022-03-15 14:22:52,293 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685141110] [2022-03-15 14:22:52,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:22:52,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-15 14:22:52,294 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:22:52,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-15 14:22:52,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-03-15 14:22:52,294 INFO L87 Difference]: Start difference. First operand 51516 states and 230556 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:22:52,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:22:52,952 INFO L93 Difference]: Finished difference Result 55339 states and 247957 transitions. [2022-03-15 14:22:52,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-15 14:22:52,953 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-03-15 14:22:52,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:22:53,268 INFO L225 Difference]: With dead ends: 55339 [2022-03-15 14:22:53,268 INFO L226 Difference]: Without dead ends: 55339 [2022-03-15 14:22:53,269 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 192 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-03-15 14:22:53,270 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 95 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:22:53,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 258 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:22:53,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55339 states. [2022-03-15 14:22:54,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55339 to 55339. [2022-03-15 14:22:54,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55339 states, 55338 states have (on average 4.480772705916369) internal successors, (247957), 55338 states have internal predecessors, (247957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:22:54,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55339 states to 55339 states and 247957 transitions. [2022-03-15 14:22:54,985 INFO L78 Accepts]: Start accepts. Automaton has 55339 states and 247957 transitions. Word has length 98 [2022-03-15 14:22:54,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:22:54,986 INFO L470 AbstractCegarLoop]: Abstraction has 55339 states and 247957 transitions. [2022-03-15 14:22:54,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:22:54,986 INFO L276 IsEmpty]: Start isEmpty. Operand 55339 states and 247957 transitions. [2022-03-15 14:22:55,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-03-15 14:22:55,435 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:22:55,435 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:22:55,453 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-15 14:22:55,635 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 [2022-03-15 14:22:55,636 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 14:22:55,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:22:55,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1162914164, now seen corresponding path program 1 times [2022-03-15 14:22:55,636 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:22:55,637 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890045962] [2022-03-15 14:22:55,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:22:55,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:22:55,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:22:55,726 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:22:55,726 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:22:55,726 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890045962] [2022-03-15 14:22:55,726 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890045962] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:22:55,726 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:22:55,726 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-15 14:22:55,726 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408109751] [2022-03-15 14:22:55,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:22:55,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-15 14:22:55,727 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:22:55,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-15 14:22:55,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-03-15 14:22:55,727 INFO L87 Difference]: Start difference. First operand 55339 states and 247957 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:22:56,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:22:56,680 INFO L93 Difference]: Finished difference Result 85069 states and 383068 transitions. [2022-03-15 14:22:56,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-15 14:22:56,681 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-03-15 14:22:56,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:22:57,093 INFO L225 Difference]: With dead ends: 85069 [2022-03-15 14:22:57,094 INFO L226 Difference]: Without dead ends: 85069 [2022-03-15 14:22:57,094 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-03-15 14:22:57,094 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 119 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:22:57,095 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 447 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:22:57,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85069 states. [2022-03-15 14:22:59,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85069 to 62530. [2022-03-15 14:22:59,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62530 states, 62529 states have (on average 4.458203393625358) internal successors, (278767), 62529 states have internal predecessors, (278767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:22:59,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62530 states to 62530 states and 278767 transitions. [2022-03-15 14:22:59,863 INFO L78 Accepts]: Start accepts. Automaton has 62530 states and 278767 transitions. Word has length 98 [2022-03-15 14:22:59,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:22:59,864 INFO L470 AbstractCegarLoop]: Abstraction has 62530 states and 278767 transitions. [2022-03-15 14:22:59,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:22:59,864 INFO L276 IsEmpty]: Start isEmpty. Operand 62530 states and 278767 transitions. [2022-03-15 14:23:00,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-03-15 14:23:00,319 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:23:00,319 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:23:00,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-15 14:23:00,319 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 14:23:00,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:23:00,320 INFO L85 PathProgramCache]: Analyzing trace with hash 2119087668, now seen corresponding path program 2 times [2022-03-15 14:23:00,320 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:23:00,320 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132679099] [2022-03-15 14:23:00,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:23:00,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:23:00,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:23:00,408 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:23:00,409 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:23:00,409 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132679099] [2022-03-15 14:23:00,409 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132679099] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:23:00,409 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:23:00,409 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-15 14:23:00,409 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068361628] [2022-03-15 14:23:00,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:23:00,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-15 14:23:00,409 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:23:00,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-15 14:23:00,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-03-15 14:23:00,410 INFO L87 Difference]: Start difference. First operand 62530 states and 278767 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:23:01,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:23:01,359 INFO L93 Difference]: Finished difference Result 88758 states and 398107 transitions. [2022-03-15 14:23:01,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-15 14:23:01,360 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-03-15 14:23:01,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:23:01,790 INFO L225 Difference]: With dead ends: 88758 [2022-03-15 14:23:01,791 INFO L226 Difference]: Without dead ends: 88758 [2022-03-15 14:23:01,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-03-15 14:23:01,791 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 159 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 796 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:23:01,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 796 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:23:02,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88758 states. [2022-03-15 14:23:03,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88758 to 65588. [2022-03-15 14:23:03,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65588 states, 65587 states have (on average 4.465122661503042) internal successors, (292854), 65587 states have internal predecessors, (292854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:23:04,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65588 states to 65588 states and 292854 transitions. [2022-03-15 14:23:04,534 INFO L78 Accepts]: Start accepts. Automaton has 65588 states and 292854 transitions. Word has length 98 [2022-03-15 14:23:04,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:23:04,535 INFO L470 AbstractCegarLoop]: Abstraction has 65588 states and 292854 transitions. [2022-03-15 14:23:04,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:23:04,535 INFO L276 IsEmpty]: Start isEmpty. Operand 65588 states and 292854 transitions. [2022-03-15 14:23:04,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-03-15 14:23:04,733 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:23:04,733 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:23:04,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-15 14:23:04,733 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 14:23:04,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:23:04,733 INFO L85 PathProgramCache]: Analyzing trace with hash 776329516, now seen corresponding path program 2 times [2022-03-15 14:23:04,734 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:23:04,734 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307405690] [2022-03-15 14:23:04,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:23:04,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:23:04,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:23:04,818 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:23:04,818 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:23:04,818 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307405690] [2022-03-15 14:23:04,818 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307405690] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:23:04,818 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139733969] [2022-03-15 14:23:04,818 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:23:04,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:23:04,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:23:04,820 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) [2022-03-15 14:23:04,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-15 14:23:04,898 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:23:04,898 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:23:04,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-15 14:23:04,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:23:05,063 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:23:05,063 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-15 14:23:05,063 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139733969] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:23:05,063 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-15 14:23:05,063 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-03-15 14:23:05,064 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516543366] [2022-03-15 14:23:05,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:23:05,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-15 14:23:05,064 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:23:05,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-15 14:23:05,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-03-15 14:23:05,064 INFO L87 Difference]: Start difference. First operand 65588 states and 292854 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:23:05,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:23:05,950 INFO L93 Difference]: Finished difference Result 87554 states and 392961 transitions. [2022-03-15 14:23:05,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-15 14:23:05,950 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-03-15 14:23:05,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:23:06,624 INFO L225 Difference]: With dead ends: 87554 [2022-03-15 14:23:06,625 INFO L226 Difference]: Without dead ends: 83213 [2022-03-15 14:23:06,625 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-03-15 14:23:06,625 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 98 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:23:06,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 316 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:23:06,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83213 states. [2022-03-15 14:23:08,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83213 to 59564. [2022-03-15 14:23:08,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59564 states, 59563 states have (on average 4.520759531924181) internal successors, (269270), 59563 states have internal predecessors, (269270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:23:08,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59564 states to 59564 states and 269270 transitions. [2022-03-15 14:23:08,968 INFO L78 Accepts]: Start accepts. Automaton has 59564 states and 269270 transitions. Word has length 98 [2022-03-15 14:23:08,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:23:08,969 INFO L470 AbstractCegarLoop]: Abstraction has 59564 states and 269270 transitions. [2022-03-15 14:23:08,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:23:08,969 INFO L276 IsEmpty]: Start isEmpty. Operand 59564 states and 269270 transitions. [2022-03-15 14:23:09,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-03-15 14:23:09,137 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:23:09,137 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:23:09,154 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-03-15 14:23:09,343 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,SelfDestructingSolverStorable9 [2022-03-15 14:23:09,344 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 14:23:09,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:23:09,344 INFO L85 PathProgramCache]: Analyzing trace with hash -541598790, now seen corresponding path program 3 times [2022-03-15 14:23:09,344 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:23:09,344 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652070510] [2022-03-15 14:23:09,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:23:09,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:23:09,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:23:09,398 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:23:09,398 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:23:09,398 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652070510] [2022-03-15 14:23:09,398 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652070510] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:23:09,399 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:23:09,400 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-15 14:23:09,400 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005532698] [2022-03-15 14:23:09,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:23:09,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-15 14:23:09,400 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:23:09,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-15 14:23:09,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-15 14:23:09,401 INFO L87 Difference]: Start difference. First operand 59564 states and 269270 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:23:10,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:23:10,314 INFO L93 Difference]: Finished difference Result 93055 states and 418675 transitions. [2022-03-15 14:23:10,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-15 14:23:10,314 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-03-15 14:23:10,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:23:10,997 INFO L225 Difference]: With dead ends: 93055 [2022-03-15 14:23:10,997 INFO L226 Difference]: Without dead ends: 91375 [2022-03-15 14:23:10,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-03-15 14:23:10,998 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 114 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:23:10,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 368 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 14:23:11,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91375 states. [2022-03-15 14:23:12,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91375 to 64496. [2022-03-15 14:23:12,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64496 states, 64495 states have (on average 4.511869137142414) internal successors, (290993), 64495 states have internal predecessors, (290993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:23:13,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64496 states to 64496 states and 290993 transitions. [2022-03-15 14:23:13,438 INFO L78 Accepts]: Start accepts. Automaton has 64496 states and 290993 transitions. Word has length 98 [2022-03-15 14:23:13,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:23:13,438 INFO L470 AbstractCegarLoop]: Abstraction has 64496 states and 290993 transitions. [2022-03-15 14:23:13,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:23:13,438 INFO L276 IsEmpty]: Start isEmpty. Operand 64496 states and 290993 transitions. [2022-03-15 14:23:13,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-03-15 14:23:13,632 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:23:13,632 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:23:13,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-03-15 14:23:13,632 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 14:23:13,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:23:13,632 INFO L85 PathProgramCache]: Analyzing trace with hash 696832420, now seen corresponding path program 4 times [2022-03-15 14:23:13,632 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:23:13,633 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745627419] [2022-03-15 14:23:13,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:23:13,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:23:13,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:23:13,691 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:23:13,691 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:23:13,691 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745627419] [2022-03-15 14:23:13,691 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745627419] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:23:13,691 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:23:13,691 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-15 14:23:13,691 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414205558] [2022-03-15 14:23:13,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:23:13,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-15 14:23:13,692 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:23:13,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-15 14:23:13,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-03-15 14:23:13,693 INFO L87 Difference]: Start difference. First operand 64496 states and 290993 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:23:15,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:23:15,027 INFO L93 Difference]: Finished difference Result 104843 states and 472926 transitions. [2022-03-15 14:23:15,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-15 14:23:15,028 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-03-15 14:23:15,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:23:15,591 INFO L225 Difference]: With dead ends: 104843 [2022-03-15 14:23:15,591 INFO L226 Difference]: Without dead ends: 104843 [2022-03-15 14:23:15,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-03-15 14:23:15,592 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 100 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:23:15,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 349 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:23:15,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104843 states. [2022-03-15 14:23:17,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104843 to 67278. [2022-03-15 14:23:18,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67278 states, 67277 states have (on average 4.5062948704609305) internal successors, (303170), 67277 states have internal predecessors, (303170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:23:18,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67278 states to 67278 states and 303170 transitions. [2022-03-15 14:23:18,644 INFO L78 Accepts]: Start accepts. Automaton has 67278 states and 303170 transitions. Word has length 98 [2022-03-15 14:23:18,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:23:18,644 INFO L470 AbstractCegarLoop]: Abstraction has 67278 states and 303170 transitions. [2022-03-15 14:23:18,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:23:18,644 INFO L276 IsEmpty]: Start isEmpty. Operand 67278 states and 303170 transitions. [2022-03-15 14:23:18,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-03-15 14:23:18,856 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:23:18,856 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:23:18,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-03-15 14:23:18,857 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 14:23:18,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:23:18,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1948353230, now seen corresponding path program 5 times [2022-03-15 14:23:18,857 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:23:18,857 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781499810] [2022-03-15 14:23:18,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:23:18,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:23:18,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:23:18,949 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:23:18,949 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:23:18,950 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781499810] [2022-03-15 14:23:18,950 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781499810] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:23:18,950 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:23:18,950 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-15 14:23:18,950 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719141252] [2022-03-15 14:23:18,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:23:18,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-15 14:23:18,950 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:23:18,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-15 14:23:18,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-03-15 14:23:18,951 INFO L87 Difference]: Start difference. First operand 67278 states and 303170 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:23:20,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:23:20,558 INFO L93 Difference]: Finished difference Result 139764 states and 628872 transitions. [2022-03-15 14:23:20,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-15 14:23:20,558 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-03-15 14:23:20,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:23:21,946 INFO L225 Difference]: With dead ends: 139764 [2022-03-15 14:23:21,946 INFO L226 Difference]: Without dead ends: 138402 [2022-03-15 14:23:21,946 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-03-15 14:23:21,947 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 166 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:23:21,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 616 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:23:22,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138402 states. [2022-03-15 14:23:24,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138402 to 64544. [2022-03-15 14:23:24,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64544 states, 64543 states have (on average 4.512789922997071) internal successors, (291269), 64543 states have internal predecessors, (291269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:23:25,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64544 states to 64544 states and 291269 transitions. [2022-03-15 14:23:25,518 INFO L78 Accepts]: Start accepts. Automaton has 64544 states and 291269 transitions. Word has length 98 [2022-03-15 14:23:25,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:23:25,518 INFO L470 AbstractCegarLoop]: Abstraction has 64544 states and 291269 transitions. [2022-03-15 14:23:25,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:23:25,518 INFO L276 IsEmpty]: Start isEmpty. Operand 64544 states and 291269 transitions. [2022-03-15 14:23:25,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-03-15 14:23:25,709 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:23:25,709 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:23:25,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-03-15 14:23:25,710 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 14:23:25,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:23:25,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1919919388, now seen corresponding path program 6 times [2022-03-15 14:23:25,710 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:23:25,710 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823068952] [2022-03-15 14:23:25,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:23:25,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:23:25,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:23:25,753 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:23:25,753 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:23:25,753 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823068952] [2022-03-15 14:23:25,753 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823068952] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:23:25,753 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:23:25,753 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-15 14:23:25,755 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094785887] [2022-03-15 14:23:25,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:23:25,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-15 14:23:25,755 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:23:25,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-15 14:23:25,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-15 14:23:25,756 INFO L87 Difference]: Start difference. First operand 64544 states and 291269 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:23:26,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:23:26,715 INFO L93 Difference]: Finished difference Result 92280 states and 418087 transitions. [2022-03-15 14:23:26,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-15 14:23:26,716 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-03-15 14:23:26,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:23:27,439 INFO L225 Difference]: With dead ends: 92280 [2022-03-15 14:23:27,439 INFO L226 Difference]: Without dead ends: 92136 [2022-03-15 14:23:27,439 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-03-15 14:23:27,440 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 78 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:23:27,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 520 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:23:27,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92136 states. [2022-03-15 14:23:29,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92136 to 64544. [2022-03-15 14:23:29,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64544 states, 64543 states have (on average 4.512046232744062) internal successors, (291221), 64543 states have internal predecessors, (291221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:23:30,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64544 states to 64544 states and 291221 transitions. [2022-03-15 14:23:30,007 INFO L78 Accepts]: Start accepts. Automaton has 64544 states and 291221 transitions. Word has length 98 [2022-03-15 14:23:30,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:23:30,007 INFO L470 AbstractCegarLoop]: Abstraction has 64544 states and 291221 transitions. [2022-03-15 14:23:30,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:23:30,007 INFO L276 IsEmpty]: Start isEmpty. Operand 64544 states and 291221 transitions. [2022-03-15 14:23:30,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-03-15 14:23:30,196 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:23:30,197 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:23:30,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-03-15 14:23:30,197 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 14:23:30,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:23:30,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1362461532, now seen corresponding path program 7 times [2022-03-15 14:23:30,197 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:23:30,197 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672201288] [2022-03-15 14:23:30,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:23:30,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:23:30,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:23:30,246 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:23:30,246 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:23:30,246 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672201288] [2022-03-15 14:23:30,247 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672201288] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:23:30,247 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:23:30,247 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-15 14:23:30,247 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191436528] [2022-03-15 14:23:30,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:23:30,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-15 14:23:30,247 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:23:30,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-15 14:23:30,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-15 14:23:30,248 INFO L87 Difference]: Start difference. First operand 64544 states and 291221 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:23:31,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:23:31,524 INFO L93 Difference]: Finished difference Result 98473 states and 437309 transitions. [2022-03-15 14:23:31,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-15 14:23:31,525 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-03-15 14:23:31,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:23:31,993 INFO L225 Difference]: With dead ends: 98473 [2022-03-15 14:23:31,993 INFO L226 Difference]: Without dead ends: 89791 [2022-03-15 14:23:31,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-03-15 14:23:31,994 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 146 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:23:31,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 523 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:23:32,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89791 states. [2022-03-15 14:23:33,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89791 to 66476. [2022-03-15 14:23:34,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66476 states, 66475 states have (on average 4.542474614516736) internal successors, (301961), 66475 states have internal predecessors, (301961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:23:34,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66476 states to 66476 states and 301961 transitions. [2022-03-15 14:23:34,573 INFO L78 Accepts]: Start accepts. Automaton has 66476 states and 301961 transitions. Word has length 98 [2022-03-15 14:23:34,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:23:34,573 INFO L470 AbstractCegarLoop]: Abstraction has 66476 states and 301961 transitions. [2022-03-15 14:23:34,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:23:34,573 INFO L276 IsEmpty]: Start isEmpty. Operand 66476 states and 301961 transitions. [2022-03-15 14:23:34,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-03-15 14:23:34,745 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:23:34,745 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:23:34,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-03-15 14:23:34,746 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 14:23:34,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:23:34,746 INFO L85 PathProgramCache]: Analyzing trace with hash -345364374, now seen corresponding path program 8 times [2022-03-15 14:23:34,746 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:23:34,746 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899864327] [2022-03-15 14:23:34,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:23:34,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:23:34,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:23:34,790 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:23:34,790 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:23:34,791 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899864327] [2022-03-15 14:23:34,791 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899864327] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:23:34,791 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:23:34,791 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-15 14:23:34,791 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661369166] [2022-03-15 14:23:34,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:23:34,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-15 14:23:34,791 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:23:34,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-15 14:23:34,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-03-15 14:23:34,792 INFO L87 Difference]: Start difference. First operand 66476 states and 301961 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:23:36,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:23:36,187 INFO L93 Difference]: Finished difference Result 130474 states and 595700 transitions. [2022-03-15 14:23:36,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-15 14:23:36,188 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-03-15 14:23:36,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:23:37,162 INFO L225 Difference]: With dead ends: 130474 [2022-03-15 14:23:37,163 INFO L226 Difference]: Without dead ends: 130474 [2022-03-15 14:23:37,163 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-03-15 14:23:37,163 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 118 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:23:37,163 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 344 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:23:37,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130474 states. [2022-03-15 14:23:39,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130474 to 69830. [2022-03-15 14:23:39,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69830 states, 69829 states have (on average 4.55353792836787) internal successors, (317969), 69829 states have internal predecessors, (317969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:23:40,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69830 states to 69830 states and 317969 transitions. [2022-03-15 14:23:40,409 INFO L78 Accepts]: Start accepts. Automaton has 69830 states and 317969 transitions. Word has length 98 [2022-03-15 14:23:40,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:23:40,410 INFO L470 AbstractCegarLoop]: Abstraction has 69830 states and 317969 transitions. [2022-03-15 14:23:40,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:23:40,410 INFO L276 IsEmpty]: Start isEmpty. Operand 69830 states and 317969 transitions. [2022-03-15 14:23:40,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-03-15 14:23:40,609 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:23:40,609 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:23:40,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-03-15 14:23:40,609 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 14:23:40,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:23:40,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1304417272, now seen corresponding path program 9 times [2022-03-15 14:23:40,610 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:23:40,610 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795801959] [2022-03-15 14:23:40,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:23:40,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:23:40,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:23:40,677 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:23:40,677 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:23:40,677 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795801959] [2022-03-15 14:23:40,677 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795801959] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:23:40,677 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:23:40,677 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-15 14:23:40,678 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408854983] [2022-03-15 14:23:40,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:23:40,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-15 14:23:40,678 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:23:40,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-15 14:23:40,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-03-15 14:23:40,679 INFO L87 Difference]: Start difference. First operand 69830 states and 317969 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:23:42,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:23:42,123 INFO L93 Difference]: Finished difference Result 132262 states and 598204 transitions. [2022-03-15 14:23:42,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-15 14:23:42,123 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-03-15 14:23:42,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:23:42,775 INFO L225 Difference]: With dead ends: 132262 [2022-03-15 14:23:42,775 INFO L226 Difference]: Without dead ends: 130228 [2022-03-15 14:23:42,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-03-15 14:23:42,776 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 193 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:23:42,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [193 Valid, 394 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:23:43,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130228 states. [2022-03-15 14:23:45,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130228 to 66349. [2022-03-15 14:23:45,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66349 states, 66348 states have (on average 4.54179477904383) internal successors, (301339), 66348 states have internal predecessors, (301339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:23:46,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66349 states to 66349 states and 301339 transitions. [2022-03-15 14:23:46,619 INFO L78 Accepts]: Start accepts. Automaton has 66349 states and 301339 transitions. Word has length 98 [2022-03-15 14:23:46,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:23:46,619 INFO L470 AbstractCegarLoop]: Abstraction has 66349 states and 301339 transitions. [2022-03-15 14:23:46,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:23:46,619 INFO L276 IsEmpty]: Start isEmpty. Operand 66349 states and 301339 transitions. [2022-03-15 14:23:46,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-03-15 14:23:46,806 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:23:46,806 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:23:46,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-03-15 14:23:46,806 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 14:23:46,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:23:46,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1332851114, now seen corresponding path program 10 times [2022-03-15 14:23:46,807 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:23:46,807 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227709578] [2022-03-15 14:23:46,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:23:46,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:23:46,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:23:46,846 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:23:46,847 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:23:46,847 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227709578] [2022-03-15 14:23:46,847 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227709578] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:23:46,847 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:23:46,847 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-15 14:23:46,847 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694676809] [2022-03-15 14:23:46,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:23:46,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-15 14:23:46,847 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:23:46,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-15 14:23:46,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-15 14:23:46,848 INFO L87 Difference]: Start difference. First operand 66349 states and 301339 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:23:48,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:23:48,196 INFO L93 Difference]: Finished difference Result 118447 states and 535789 transitions. [2022-03-15 14:23:48,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-15 14:23:48,197 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-03-15 14:23:48,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:23:48,786 INFO L225 Difference]: With dead ends: 118447 [2022-03-15 14:23:48,787 INFO L226 Difference]: Without dead ends: 118399 [2022-03-15 14:23:48,787 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-03-15 14:23:48,787 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 95 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:23:48,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 499 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:23:49,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118399 states. [2022-03-15 14:23:51,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118399 to 66333. [2022-03-15 14:23:51,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66333 states, 66332 states have (on average 4.5415033468009405) internal successors, (301247), 66332 states have internal predecessors, (301247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:23:51,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66333 states to 66333 states and 301247 transitions. [2022-03-15 14:23:51,898 INFO L78 Accepts]: Start accepts. Automaton has 66333 states and 301247 transitions. Word has length 98 [2022-03-15 14:23:51,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:23:51,898 INFO L470 AbstractCegarLoop]: Abstraction has 66333 states and 301247 transitions. [2022-03-15 14:23:51,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:23:51,898 INFO L276 IsEmpty]: Start isEmpty. Operand 66333 states and 301247 transitions. [2022-03-15 14:23:52,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-03-15 14:23:52,090 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:23:52,090 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:23:52,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-03-15 14:23:52,090 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 14:23:52,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:23:52,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1983847338, now seen corresponding path program 11 times [2022-03-15 14:23:52,091 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:23:52,091 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320554326] [2022-03-15 14:23:52,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:23:52,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:23:52,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:23:52,137 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:23:52,138 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:23:52,138 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320554326] [2022-03-15 14:23:52,138 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320554326] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:23:52,138 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:23:52,138 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-15 14:23:52,138 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784390324] [2022-03-15 14:23:52,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:23:52,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-15 14:23:52,139 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:23:52,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-15 14:23:52,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-15 14:23:52,139 INFO L87 Difference]: Start difference. First operand 66333 states and 301247 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:23:53,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:23:53,091 INFO L93 Difference]: Finished difference Result 84699 states and 386649 transitions. [2022-03-15 14:23:53,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-15 14:23:53,091 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-03-15 14:23:53,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:23:53,724 INFO L225 Difference]: With dead ends: 84699 [2022-03-15 14:23:53,724 INFO L226 Difference]: Without dead ends: 84603 [2022-03-15 14:23:53,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-03-15 14:23:53,725 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 69 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:23:53,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 355 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 14:23:53,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84603 states. [2022-03-15 14:23:55,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84603 to 65856. [2022-03-15 14:23:55,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65856 states, 65855 states have (on average 4.5458659175461245) internal successors, (299368), 65855 states have internal predecessors, (299368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:23:56,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65856 states to 65856 states and 299368 transitions. [2022-03-15 14:23:56,209 INFO L78 Accepts]: Start accepts. Automaton has 65856 states and 299368 transitions. Word has length 98 [2022-03-15 14:23:56,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:23:56,209 INFO L470 AbstractCegarLoop]: Abstraction has 65856 states and 299368 transitions. [2022-03-15 14:23:56,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:23:56,210 INFO L276 IsEmpty]: Start isEmpty. Operand 65856 states and 299368 transitions. [2022-03-15 14:23:56,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-03-15 14:23:56,389 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:23:56,389 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:23:56,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-03-15 14:23:56,389 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 14:23:56,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:23:56,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1850810616, now seen corresponding path program 1 times [2022-03-15 14:23:56,389 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:23:56,389 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282536581] [2022-03-15 14:23:56,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:23:56,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:23:56,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:23:56,462 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:23:56,462 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:23:56,462 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282536581] [2022-03-15 14:23:56,462 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282536581] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:23:56,462 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000324729] [2022-03-15 14:23:56,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:23:56,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:23:56,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:23:56,463 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) [2022-03-15 14:23:56,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-15 14:23:56,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:23:56,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-15 14:23:56,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:23:56,764 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:23:56,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:23:56,920 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:23:56,920 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000324729] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:23:56,920 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:23:56,920 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 10 [2022-03-15 14:23:56,920 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271064697] [2022-03-15 14:23:56,920 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:23:56,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-15 14:23:56,921 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:23:56,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-15 14:23:56,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-03-15 14:23:56,921 INFO L87 Difference]: Start difference. First operand 65856 states and 299368 transitions. Second operand has 10 states, 10 states have (on average 15.6) internal successors, (156), 10 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:23:59,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:23:59,261 INFO L93 Difference]: Finished difference Result 174594 states and 797644 transitions. [2022-03-15 14:23:59,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-15 14:23:59,262 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 15.6) internal successors, (156), 10 states have internal predecessors, (156), 0 states have call successors, (0), 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 103 [2022-03-15 14:23:59,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:24:00,535 INFO L225 Difference]: With dead ends: 174594 [2022-03-15 14:24:00,535 INFO L226 Difference]: Without dead ends: 174594 [2022-03-15 14:24:00,535 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 211 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:24:00,535 INFO L933 BasicCegarLoop]: 335 mSDtfsCounter, 498 mSDsluCounter, 1171 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 1373 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:24:00,536 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [498 Valid, 1373 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 14:24:00,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174594 states. [2022-03-15 14:24:03,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174594 to 62931. [2022-03-15 14:24:03,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62931 states, 62930 states have (on average 4.5571269664706815) internal successors, (286780), 62930 states have internal predecessors, (286780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:24:04,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62931 states to 62931 states and 286780 transitions. [2022-03-15 14:24:04,457 INFO L78 Accepts]: Start accepts. Automaton has 62931 states and 286780 transitions. Word has length 103 [2022-03-15 14:24:04,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:24:04,458 INFO L470 AbstractCegarLoop]: Abstraction has 62931 states and 286780 transitions. [2022-03-15 14:24:04,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.6) internal successors, (156), 10 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:24:04,458 INFO L276 IsEmpty]: Start isEmpty. Operand 62931 states and 286780 transitions. [2022-03-15 14:24:04,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-03-15 14:24:04,644 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:24:04,644 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:24:04,661 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-03-15 14:24:04,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:24:04,845 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 14:24:04,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:24:04,846 INFO L85 PathProgramCache]: Analyzing trace with hash 2140980418, now seen corresponding path program 1 times [2022-03-15 14:24:04,846 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:24:04,846 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537610523] [2022-03-15 14:24:04,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:24:04,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:24:04,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:24:04,937 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:24:04,937 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:24:04,937 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537610523] [2022-03-15 14:24:04,937 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537610523] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:24:04,937 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:24:04,937 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-15 14:24:04,937 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661251940] [2022-03-15 14:24:04,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:24:04,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-15 14:24:04,938 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:24:04,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-15 14:24:04,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-03-15 14:24:04,938 INFO L87 Difference]: Start difference. First operand 62931 states and 286780 transitions. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:24:06,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:24:06,347 INFO L93 Difference]: Finished difference Result 111649 states and 511120 transitions. [2022-03-15 14:24:06,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-15 14:24:06,347 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 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 103 [2022-03-15 14:24:06,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:24:07,548 INFO L225 Difference]: With dead ends: 111649 [2022-03-15 14:24:07,566 INFO L226 Difference]: Without dead ends: 111649 [2022-03-15 14:24:07,566 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-03-15 14:24:07,567 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 206 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:24:07,567 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 487 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:24:07,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111649 states. [2022-03-15 14:24:10,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111649 to 64031. [2022-03-15 14:24:10,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64031 states, 64030 states have (on average 4.558878650632516) internal successors, (291905), 64030 states have internal predecessors, (291905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:24:10,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64031 states to 64031 states and 291905 transitions. [2022-03-15 14:24:10,635 INFO L78 Accepts]: Start accepts. Automaton has 64031 states and 291905 transitions. Word has length 103 [2022-03-15 14:24:10,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:24:10,635 INFO L470 AbstractCegarLoop]: Abstraction has 64031 states and 291905 transitions. [2022-03-15 14:24:10,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:24:10,636 INFO L276 IsEmpty]: Start isEmpty. Operand 64031 states and 291905 transitions. [2022-03-15 14:24:11,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-03-15 14:24:11,130 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:24:11,130 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:24:11,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-03-15 14:24:11,131 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 14:24:11,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:24:11,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1279880700, now seen corresponding path program 2 times [2022-03-15 14:24:11,131 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:24:11,131 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616740368] [2022-03-15 14:24:11,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:24:11,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:24:11,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:24:11,184 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:24:11,185 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:24:11,185 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616740368] [2022-03-15 14:24:11,185 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616740368] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:24:11,185 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:24:11,185 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-15 14:24:11,185 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107349347] [2022-03-15 14:24:11,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:24:11,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-15 14:24:11,186 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:24:11,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-15 14:24:11,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-15 14:24:11,186 INFO L87 Difference]: Start difference. First operand 64031 states and 291905 transitions. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:24:12,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:24:12,279 INFO L93 Difference]: Finished difference Result 104161 states and 476350 transitions. [2022-03-15 14:24:12,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-15 14:24:12,279 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 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 103 [2022-03-15 14:24:12,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:24:13,082 INFO L225 Difference]: With dead ends: 104161 [2022-03-15 14:24:13,082 INFO L226 Difference]: Without dead ends: 104161 [2022-03-15 14:24:13,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-03-15 14:24:13,084 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 212 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:24:13,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [212 Valid, 523 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:24:13,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104161 states. [2022-03-15 14:24:15,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104161 to 59019. [2022-03-15 14:24:15,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59019 states, 59018 states have (on average 4.546002914365109) internal successors, (268296), 59018 states have internal predecessors, (268296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:24:15,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59019 states to 59019 states and 268296 transitions. [2022-03-15 14:24:15,706 INFO L78 Accepts]: Start accepts. Automaton has 59019 states and 268296 transitions. Word has length 103 [2022-03-15 14:24:15,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:24:15,707 INFO L470 AbstractCegarLoop]: Abstraction has 59019 states and 268296 transitions. [2022-03-15 14:24:15,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:24:15,707 INFO L276 IsEmpty]: Start isEmpty. Operand 59019 states and 268296 transitions. [2022-03-15 14:24:15,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-03-15 14:24:15,883 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:24:15,883 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:24:15,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-03-15 14:24:15,883 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 14:24:15,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:24:15,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1462318488, now seen corresponding path program 2 times [2022-03-15 14:24:15,884 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:24:15,884 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567853781] [2022-03-15 14:24:15,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:24:15,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:24:15,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:24:15,944 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:24:15,944 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:24:15,944 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567853781] [2022-03-15 14:24:15,944 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567853781] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:24:15,944 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155832723] [2022-03-15 14:24:15,944 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:24:15,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:24:15,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:24:15,946 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) [2022-03-15 14:24:15,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-15 14:24:16,030 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:24:16,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:24:16,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-15 14:24:16,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:24:16,238 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:24:16,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:24:16,420 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:24:16,420 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155832723] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:24:16,421 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:24:16,421 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2022-03-15 14:24:16,421 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999368265] [2022-03-15 14:24:16,421 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:24:16,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-15 14:24:16,421 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:24:16,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-15 14:24:16,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-03-15 14:24:16,422 INFO L87 Difference]: Start difference. First operand 59019 states and 268296 transitions. Second operand has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:24:17,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:24:17,373 INFO L93 Difference]: Finished difference Result 84164 states and 383640 transitions. [2022-03-15 14:24:17,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-15 14:24:17,373 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 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 103 [2022-03-15 14:24:17,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:24:18,022 INFO L225 Difference]: With dead ends: 84164 [2022-03-15 14:24:18,022 INFO L226 Difference]: Without dead ends: 84164 [2022-03-15 14:24:18,023 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 203 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2022-03-15 14:24:18,023 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 296 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:24:18,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [296 Valid, 744 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:24:18,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84164 states. [2022-03-15 14:24:19,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84164 to 48618. [2022-03-15 14:24:19,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48618 states, 48617 states have (on average 4.567846638007281) internal successors, (222075), 48617 states have internal predecessors, (222075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:24:19,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48618 states to 48618 states and 222075 transitions. [2022-03-15 14:24:19,960 INFO L78 Accepts]: Start accepts. Automaton has 48618 states and 222075 transitions. Word has length 103 [2022-03-15 14:24:19,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:24:19,961 INFO L470 AbstractCegarLoop]: Abstraction has 48618 states and 222075 transitions. [2022-03-15 14:24:19,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:24:19,961 INFO L276 IsEmpty]: Start isEmpty. Operand 48618 states and 222075 transitions. [2022-03-15 14:24:20,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-03-15 14:24:20,083 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:24:20,083 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:24:20,102 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-15 14:24:20,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:24:20,288 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 14:24:20,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:24:20,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1358209140, now seen corresponding path program 1 times [2022-03-15 14:24:20,288 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:24:20,288 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709981354] [2022-03-15 14:24:20,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:24:20,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:24:20,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:24:20,614 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:24:20,614 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:24:20,614 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709981354] [2022-03-15 14:24:20,615 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709981354] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:24:20,615 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437801917] [2022-03-15 14:24:20,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:24:20,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:24:20,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:24:20,632 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) [2022-03-15 14:24:20,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-15 14:24:20,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:24:20,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-15 14:24:20,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:24:20,878 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:24:20,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:24:21,063 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:24:21,063 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437801917] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:24:21,063 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:24:21,063 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 10 [2022-03-15 14:24:21,063 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018564609] [2022-03-15 14:24:21,064 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:24:21,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-15 14:24:21,066 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:24:21,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-15 14:24:21,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-03-15 14:24:21,067 INFO L87 Difference]: Start difference. First operand 48618 states and 222075 transitions. Second operand has 10 states, 10 states have (on average 20.6) internal successors, (206), 10 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:24:22,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:24:22,615 INFO L93 Difference]: Finished difference Result 140261 states and 633845 transitions. [2022-03-15 14:24:22,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-15 14:24:22,616 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 20.6) internal successors, (206), 10 states have internal predecessors, (206), 0 states have call successors, (0), 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 108 [2022-03-15 14:24:22,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:24:23,368 INFO L225 Difference]: With dead ends: 140261 [2022-03-15 14:24:23,368 INFO L226 Difference]: Without dead ends: 132800 [2022-03-15 14:24:23,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 212 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-03-15 14:24:23,369 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 242 mSDsluCounter, 780 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 867 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:24:23,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 867 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:24:23,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132800 states. [2022-03-15 14:24:27,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132800 to 122554. [2022-03-15 14:24:27,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122554 states, 122553 states have (on average 4.562670844450972) internal successors, (559169), 122553 states have internal predecessors, (559169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:24:28,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122554 states to 122554 states and 559169 transitions. [2022-03-15 14:24:28,756 INFO L78 Accepts]: Start accepts. Automaton has 122554 states and 559169 transitions. Word has length 108 [2022-03-15 14:24:28,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:24:28,757 INFO L470 AbstractCegarLoop]: Abstraction has 122554 states and 559169 transitions. [2022-03-15 14:24:28,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 20.6) internal successors, (206), 10 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:24:28,757 INFO L276 IsEmpty]: Start isEmpty. Operand 122554 states and 559169 transitions. [2022-03-15 14:24:29,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-03-15 14:24:29,173 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:24:29,174 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:24:29,190 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-15 14:24:29,374 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,SelfDestructingSolverStorable23 [2022-03-15 14:24:29,374 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 14:24:29,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:24:29,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1794452218, now seen corresponding path program 2 times [2022-03-15 14:24:29,375 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:24:29,375 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959617927] [2022-03-15 14:24:29,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:24:29,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:24:29,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:24:29,492 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:24:29,492 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:24:29,492 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959617927] [2022-03-15 14:24:29,492 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959617927] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:24:29,492 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722769630] [2022-03-15 14:24:29,492 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:24:29,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:24:29,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:24:29,493 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) [2022-03-15 14:24:29,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-15 14:24:29,619 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:24:29,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:24:29,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 18 conjunts are in the unsatisfiable core [2022-03-15 14:24:29,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:24:29,920 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:24:29,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:24:30,448 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:24:30,448 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722769630] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:24:30,448 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:24:30,448 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2022-03-15 14:24:30,448 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965991731] [2022-03-15 14:24:30,448 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:24:30,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-15 14:24:30,449 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:24:30,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-15 14:24:30,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-03-15 14:24:30,449 INFO L87 Difference]: Start difference. First operand 122554 states and 559169 transitions. Second operand has 13 states, 13 states have (on average 17.384615384615383) internal successors, (226), 13 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:24:33,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:24:33,897 INFO L93 Difference]: Finished difference Result 274034 states and 1244126 transitions. [2022-03-15 14:24:33,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-15 14:24:33,898 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 17.384615384615383) internal successors, (226), 13 states have internal predecessors, (226), 0 states have call successors, (0), 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 108 [2022-03-15 14:24:33,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:24:36,833 INFO L225 Difference]: With dead ends: 274034 [2022-03-15 14:24:36,833 INFO L226 Difference]: Without dead ends: 266006 [2022-03-15 14:24:36,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 210 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-03-15 14:24:36,834 INFO L933 BasicCegarLoop]: 258 mSDtfsCounter, 421 mSDsluCounter, 1323 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 1460 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 14:24:36,834 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [421 Valid, 1460 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 14:24:37,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266006 states. [2022-03-15 14:24:44,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266006 to 165829. [2022-03-15 14:24:44,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165829 states, 165828 states have (on average 4.580318160986082) internal successors, (759545), 165828 states have internal predecessors, (759545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:24:46,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165829 states to 165829 states and 759545 transitions. [2022-03-15 14:24:46,291 INFO L78 Accepts]: Start accepts. Automaton has 165829 states and 759545 transitions. Word has length 108 [2022-03-15 14:24:46,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:24:46,292 INFO L470 AbstractCegarLoop]: Abstraction has 165829 states and 759545 transitions. [2022-03-15 14:24:46,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 17.384615384615383) internal successors, (226), 13 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:24:46,292 INFO L276 IsEmpty]: Start isEmpty. Operand 165829 states and 759545 transitions. [2022-03-15 14:24:47,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-03-15 14:24:47,174 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:24:47,174 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:24:47,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-15 14:24:47,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:24:47,375 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 14:24:47,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:24:47,375 INFO L85 PathProgramCache]: Analyzing trace with hash -644865062, now seen corresponding path program 3 times [2022-03-15 14:24:47,375 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:24:47,376 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698896956] [2022-03-15 14:24:47,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:24:47,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:24:47,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:24:47,478 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:24:47,479 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:24:47,479 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698896956] [2022-03-15 14:24:47,479 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698896956] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:24:47,479 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862327367] [2022-03-15 14:24:47,479 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:24:47,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:24:47,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:24:47,484 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) [2022-03-15 14:24:47,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-15 14:24:47,586 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-15 14:24:47,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:24:47,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-15 14:24:47,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:24:47,849 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:24:47,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:24:48,114 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:24:48,114 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862327367] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:24:48,114 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:24:48,114 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2022-03-15 14:24:48,115 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605803781] [2022-03-15 14:24:48,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:24:48,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-15 14:24:48,115 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:24:48,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-15 14:24:48,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2022-03-15 14:24:48,116 INFO L87 Difference]: Start difference. First operand 165829 states and 759545 transitions. Second operand has 23 states, 23 states have (on average 9.434782608695652) internal successors, (217), 23 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:25:47,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:25:47,179 INFO L93 Difference]: Finished difference Result 1749100 states and 7999941 transitions. [2022-03-15 14:25:47,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 503 states. [2022-03-15 14:25:47,179 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 9.434782608695652) internal successors, (217), 23 states have internal predecessors, (217), 0 states have call successors, (0), 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 113 [2022-03-15 14:25:47,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted.