/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/test-easy1.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.abstract-por-f0ea240 [2022-02-10 23:11:24,174 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-10 23:11:24,176 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-10 23:11:24,243 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-10 23:11:24,244 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-10 23:11:24,246 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-10 23:11:24,248 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-10 23:11:24,250 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-10 23:11:24,252 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-10 23:11:24,255 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-10 23:11:24,256 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-10 23:11:24,257 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-10 23:11:24,257 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-10 23:11:24,259 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-10 23:11:24,260 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-10 23:11:24,262 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-10 23:11:24,263 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-10 23:11:24,263 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-10 23:11:24,265 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-10 23:11:24,269 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-10 23:11:24,270 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-10 23:11:24,271 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-10 23:11:24,272 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-10 23:11:24,273 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-10 23:11:24,277 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-10 23:11:24,284 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-10 23:11:24,285 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-10 23:11:24,285 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-10 23:11:24,286 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 [2022-02-10 23:11:24,310 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-10 23:11:24,310 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-10 23:11:24,310 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-10 23:11:24,310 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-10 23:11:24,311 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-10 23:11:24,311 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-10 23:11:24,312 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-10 23:11:24,312 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-10 23:11:24,312 INFO L138 SettingsManager]: * Use SBE=true [2022-02-10 23:11:24,312 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-10 23:11:24,313 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-10 23:11:24,313 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-10 23:11:24,313 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-10 23:11:24,313 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-10 23:11:24,313 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-10 23:11:24,313 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-10 23:11:24,313 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-10 23:11:24,313 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-10 23:11:24,313 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-10 23:11:24,313 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-10 23:11:24,313 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-10 23:11:24,314 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-10 23:11:24,314 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-10 23:11:24,314 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-10 23:11:24,314 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-10 23:11:24,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-10 23:11:24,315 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-10 23:11:24,315 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-10 23:11:24,315 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-10 23:11:24,315 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-10 23:11:24,315 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-10 23:11:24,315 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-10 23:11:24,315 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-10 23:11:24,316 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-10 23:11:24,509 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-10 23:11:24,532 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-10 23:11:24,534 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-10 23:11:24,535 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-10 23:11:24,535 INFO L275 PluginConnector]: CDTParser initialized [2022-02-10 23:11:24,536 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy1.wvr.c [2022-02-10 23:11:24,593 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22e79bb58/4cc836a884c5451f9e8e574bd4f4a4a0/FLAGaa5394760 [2022-02-10 23:11:24,886 INFO L306 CDTParser]: Found 1 translation units. [2022-02-10 23:11:24,887 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy1.wvr.c [2022-02-10 23:11:24,892 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22e79bb58/4cc836a884c5451f9e8e574bd4f4a4a0/FLAGaa5394760 [2022-02-10 23:11:25,309 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22e79bb58/4cc836a884c5451f9e8e574bd4f4a4a0 [2022-02-10 23:11:25,314 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-10 23:11:25,315 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-10 23:11:25,317 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-10 23:11:25,317 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-10 23:11:25,319 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-10 23:11:25,319 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.02 11:11:25" (1/1) ... [2022-02-10 23:11:25,321 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cf454fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 11:11:25, skipping insertion in model container [2022-02-10 23:11:25,321 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.02 11:11:25" (1/1) ... [2022-02-10 23:11:25,328 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-10 23:11:25,339 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-10 23:11:25,509 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/test-easy1.wvr.c[1876,1889] [2022-02-10 23:11:25,511 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-10 23:11:25,517 INFO L203 MainTranslator]: Completed pre-run [2022-02-10 23:11:25,534 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/test-easy1.wvr.c[1876,1889] [2022-02-10 23:11:25,541 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-10 23:11:25,552 INFO L208 MainTranslator]: Completed translation [2022-02-10 23:11:25,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 11:11:25 WrapperNode [2022-02-10 23:11:25,553 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-10 23:11:25,554 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-10 23:11:25,554 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-10 23:11:25,554 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-10 23:11:25,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 11:11:25" (1/1) ... [2022-02-10 23:11:25,565 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 11:11:25" (1/1) ... [2022-02-10 23:11:25,581 INFO L137 Inliner]: procedures = 21, calls = 20, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 56 [2022-02-10 23:11:25,581 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-10 23:11:25,582 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-10 23:11:25,582 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-10 23:11:25,582 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-10 23:11:25,587 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 11:11:25" (1/1) ... [2022-02-10 23:11:25,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 11:11:25" (1/1) ... [2022-02-10 23:11:25,596 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 11:11:25" (1/1) ... [2022-02-10 23:11:25,597 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 11:11:25" (1/1) ... [2022-02-10 23:11:25,605 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 11:11:25" (1/1) ... [2022-02-10 23:11:25,607 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 11:11:25" (1/1) ... [2022-02-10 23:11:25,608 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 11:11:25" (1/1) ... [2022-02-10 23:11:25,609 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-10 23:11:25,610 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-10 23:11:25,610 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-10 23:11:25,610 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-10 23:11:25,612 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 11:11:25" (1/1) ... [2022-02-10 23:11:25,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-10 23:11:25,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:11:25,636 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) [2022-02-10 23:11:25,655 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 [2022-02-10 23:11:25,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-10 23:11:25,672 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-02-10 23:11:25,672 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-02-10 23:11:25,672 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-02-10 23:11:25,672 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-02-10 23:11:25,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-10 23:11:25,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-10 23:11:25,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-10 23:11:25,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-10 23:11:25,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-10 23:11:25,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-10 23:11:25,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-10 23:11:25,673 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-10 23:11:25,740 INFO L234 CfgBuilder]: Building ICFG [2022-02-10 23:11:25,742 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-10 23:11:25,880 INFO L275 CfgBuilder]: Performing block encoding [2022-02-10 23:11:25,884 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-10 23:11:25,885 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-02-10 23:11:25,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 11:11:25 BoogieIcfgContainer [2022-02-10 23:11:25,886 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-10 23:11:25,887 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-10 23:11:25,887 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-10 23:11:25,900 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-10 23:11:25,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.02 11:11:25" (1/3) ... [2022-02-10 23:11:25,901 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d3bf4d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.02 11:11:25, skipping insertion in model container [2022-02-10 23:11:25,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 11:11:25" (2/3) ... [2022-02-10 23:11:25,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d3bf4d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.02 11:11:25, skipping insertion in model container [2022-02-10 23:11:25,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 11:11:25" (3/3) ... [2022-02-10 23:11:25,904 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy1.wvr.c [2022-02-10 23:11:25,909 WARN L154 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-10 23:11:25,909 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-10 23:11:25,909 INFO L168 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-10 23:11:25,909 INFO L538 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-10 23:11:25,950 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:11:25,950 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:11:25,950 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:11:25,950 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:11:25,950 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:11:25,950 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:11:25,951 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:11:25,951 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:11:25,951 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:11:25,951 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:11:25,952 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:11:25,952 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:11:25,952 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:11:25,952 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:11:25,952 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:11:25,952 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:11:25,952 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:11:25,952 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:11:25,953 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:11:25,953 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:11:25,955 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:11:25,955 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:11:25,955 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:11:25,957 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:11:25,957 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:11:25,957 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:11:25,959 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-02-10 23:11:25,990 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-10 23:11:25,994 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, 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 [2022-02-10 23:11:25,995 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-02-10 23:11:26,001 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 85 places, 84 transitions, 184 flow [2022-02-10 23:11:26,051 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 302 states, 301 states have (on average 2.574750830564784) internal successors, (775), 301 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:26,054 INFO L276 IsEmpty]: Start isEmpty. Operand has 302 states, 301 states have (on average 2.574750830564784) internal successors, (775), 301 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:26,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-02-10 23:11:26,064 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:11:26,064 INFO L515 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] [2022-02-10 23:11:26,065 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:11:26,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:11:26,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1149725056, now seen corresponding path program 1 times [2022-02-10 23:11:26,076 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:11:26,076 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184347186] [2022-02-10 23:11:26,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:11:26,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:11:26,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:11:26,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:11:26,250 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:11:26,250 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184347186] [2022-02-10 23:11:26,251 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184347186] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 23:11:26,251 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 23:11:26,251 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-10 23:11:26,252 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141448427] [2022-02-10 23:11:26,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 23:11:26,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-02-10 23:11:26,257 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:11:26,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-02-10 23:11:26,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-10 23:11:26,283 INFO L87 Difference]: Start difference. First operand has 302 states, 301 states have (on average 2.574750830564784) internal successors, (775), 301 states have internal predecessors, (775), 0 states have call successors, (0), 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 29.5) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:26,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:11:26,326 INFO L93 Difference]: Finished difference Result 302 states and 708 transitions. [2022-02-10 23:11:26,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-10 23:11:26,328 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2022-02-10 23:11:26,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:11:26,336 INFO L225 Difference]: With dead ends: 302 [2022-02-10 23:11:26,336 INFO L226 Difference]: Without dead ends: 300 [2022-02-10 23:11:26,337 INFO L933 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 [2022-02-10 23:11:26,339 INFO L934 BasicCegarLoop]: 65 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 23:11:26,340 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 65 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 23:11:26,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-02-10 23:11:26,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 300. [2022-02-10 23:11:26,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 299 states have (on average 2.3612040133779266) internal successors, (706), 299 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:26,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 706 transitions. [2022-02-10 23:11:26,397 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 706 transitions. Word has length 59 [2022-02-10 23:11:26,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:11:26,399 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 706 transitions. [2022-02-10 23:11:26,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:26,399 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 706 transitions. [2022-02-10 23:11:26,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-02-10 23:11:26,406 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:11:26,406 INFO L515 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] [2022-02-10 23:11:26,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-10 23:11:26,407 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:11:26,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:11:26,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1697195594, now seen corresponding path program 1 times [2022-02-10 23:11:26,409 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:11:26,410 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047712270] [2022-02-10 23:11:26,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:11:26,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:11:26,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:11:26,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:11:26,607 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:11:26,607 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047712270] [2022-02-10 23:11:26,607 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047712270] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 23:11:26,608 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 23:11:26,608 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-10 23:11:26,608 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861590383] [2022-02-10 23:11:26,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 23:11:26,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-10 23:11:26,609 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:11:26,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-10 23:11:26,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-02-10 23:11:26,610 INFO L87 Difference]: Start difference. First operand 300 states and 706 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:26,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:11:26,743 INFO L93 Difference]: Finished difference Result 504 states and 1216 transitions. [2022-02-10 23:11:26,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-10 23:11:26,743 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2022-02-10 23:11:26,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:11:26,747 INFO L225 Difference]: With dead ends: 504 [2022-02-10 23:11:26,747 INFO L226 Difference]: Without dead ends: 453 [2022-02-10 23:11:26,748 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-02-10 23:11:26,748 INFO L934 BasicCegarLoop]: 53 mSDtfsCounter, 63 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:11:26,749 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 278 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:11:26,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2022-02-10 23:11:26,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 355. [2022-02-10 23:11:26,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 354 states have (on average 2.364406779661017) internal successors, (837), 354 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:26,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 837 transitions. [2022-02-10 23:11:26,759 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 837 transitions. Word has length 59 [2022-02-10 23:11:26,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:11:26,759 INFO L470 AbstractCegarLoop]: Abstraction has 355 states and 837 transitions. [2022-02-10 23:11:26,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:26,759 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 837 transitions. [2022-02-10 23:11:26,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-02-10 23:11:26,760 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:11:26,760 INFO L515 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] [2022-02-10 23:11:26,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-10 23:11:26,761 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:11:26,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:11:26,761 INFO L85 PathProgramCache]: Analyzing trace with hash -395182923, now seen corresponding path program 1 times [2022-02-10 23:11:26,761 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:11:26,762 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566365155] [2022-02-10 23:11:26,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:11:26,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:11:26,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:11:26,887 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:11:26,887 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:11:26,887 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566365155] [2022-02-10 23:11:26,888 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566365155] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 23:11:26,888 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 23:11:26,888 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-10 23:11:26,888 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983832916] [2022-02-10 23:11:26,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 23:11:26,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-10 23:11:26,889 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:11:26,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-10 23:11:26,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-02-10 23:11:26,889 INFO L87 Difference]: Start difference. First operand 355 states and 837 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:26,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:11:26,975 INFO L93 Difference]: Finished difference Result 586 states and 1395 transitions. [2022-02-10 23:11:26,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-10 23:11:26,976 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2022-02-10 23:11:26,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:11:26,979 INFO L225 Difference]: With dead ends: 586 [2022-02-10 23:11:26,979 INFO L226 Difference]: Without dead ends: 586 [2022-02-10 23:11:26,979 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-02-10 23:11:26,980 INFO L934 BasicCegarLoop]: 70 mSDtfsCounter, 88 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:11:26,980 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 247 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:11:26,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2022-02-10 23:11:26,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 353. [2022-02-10 23:11:26,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 352 states have (on average 2.428977272727273) internal successors, (855), 352 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:26,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 855 transitions. [2022-02-10 23:11:26,991 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 855 transitions. Word has length 63 [2022-02-10 23:11:26,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:11:26,991 INFO L470 AbstractCegarLoop]: Abstraction has 353 states and 855 transitions. [2022-02-10 23:11:26,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:26,991 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 855 transitions. [2022-02-10 23:11:26,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-02-10 23:11:26,992 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:11:26,992 INFO L515 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] [2022-02-10 23:11:26,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-10 23:11:26,993 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:11:27,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:11:27,012 INFO L85 PathProgramCache]: Analyzing trace with hash -459418951, now seen corresponding path program 2 times [2022-02-10 23:11:27,012 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:11:27,012 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627891271] [2022-02-10 23:11:27,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:11:27,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:11:27,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:11:27,113 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:11:27,113 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:11:27,113 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627891271] [2022-02-10 23:11:27,114 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627891271] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 23:11:27,114 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 23:11:27,114 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-10 23:11:27,114 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618583402] [2022-02-10 23:11:27,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 23:11:27,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-10 23:11:27,115 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:11:27,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-10 23:11:27,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-02-10 23:11:27,115 INFO L87 Difference]: Start difference. First operand 353 states and 855 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:27,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:11:27,197 INFO L93 Difference]: Finished difference Result 460 states and 1098 transitions. [2022-02-10 23:11:27,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-10 23:11:27,198 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2022-02-10 23:11:27,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:11:27,200 INFO L225 Difference]: With dead ends: 460 [2022-02-10 23:11:27,200 INFO L226 Difference]: Without dead ends: 448 [2022-02-10 23:11:27,201 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-02-10 23:11:27,202 INFO L934 BasicCegarLoop]: 65 mSDtfsCounter, 90 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:11:27,202 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 261 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:11:27,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2022-02-10 23:11:27,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 331. [2022-02-10 23:11:27,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 330 states have (on average 2.390909090909091) internal successors, (789), 330 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:27,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 789 transitions. [2022-02-10 23:11:27,211 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 789 transitions. Word has length 63 [2022-02-10 23:11:27,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:11:27,216 INFO L470 AbstractCegarLoop]: Abstraction has 331 states and 789 transitions. [2022-02-10 23:11:27,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:27,217 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 789 transitions. [2022-02-10 23:11:27,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-02-10 23:11:27,218 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:11:27,218 INFO L515 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] [2022-02-10 23:11:27,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-10 23:11:27,218 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:11:27,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:11:27,219 INFO L85 PathProgramCache]: Analyzing trace with hash -88921197, now seen corresponding path program 1 times [2022-02-10 23:11:27,219 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:11:27,219 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274084485] [2022-02-10 23:11:27,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:11:27,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:11:27,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:11:27,356 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:11:27,358 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:11:27,359 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274084485] [2022-02-10 23:11:27,359 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274084485] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:11:27,359 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430479785] [2022-02-10 23:11:27,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:11:27,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:11:27,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:11:27,362 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) [2022-02-10 23:11:27,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-10 23:11:27,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:11:27,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-10 23:11:27,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:11:27,760 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:11:27,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:11:27,912 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:11:27,913 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430479785] provided 1 perfect and 1 imperfect interpolant sequences [2022-02-10 23:11:27,913 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-02-10 23:11:27,913 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2022-02-10 23:11:27,913 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295698265] [2022-02-10 23:11:27,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 23:11:27,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-10 23:11:27,914 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:11:27,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-10 23:11:27,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-02-10 23:11:27,916 INFO L87 Difference]: Start difference. First operand 331 states and 789 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:27,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:11:27,965 INFO L93 Difference]: Finished difference Result 594 states and 1387 transitions. [2022-02-10 23:11:27,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-10 23:11:27,965 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2022-02-10 23:11:27,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:11:27,968 INFO L225 Difference]: With dead ends: 594 [2022-02-10 23:11:27,968 INFO L226 Difference]: Without dead ends: 594 [2022-02-10 23:11:27,972 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-02-10 23:11:27,976 INFO L934 BasicCegarLoop]: 70 mSDtfsCounter, 101 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 23:11:27,976 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 199 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 23:11:27,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2022-02-10 23:11:27,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 369. [2022-02-10 23:11:27,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 368 states have (on average 2.442934782608696) internal successors, (899), 368 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:27,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 899 transitions. [2022-02-10 23:11:27,989 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 899 transitions. Word has length 63 [2022-02-10 23:11:27,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:11:27,989 INFO L470 AbstractCegarLoop]: Abstraction has 369 states and 899 transitions. [2022-02-10 23:11:27,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:27,989 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 899 transitions. [2022-02-10 23:11:27,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-02-10 23:11:27,991 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:11:27,991 INFO L515 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] [2022-02-10 23:11:28,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-02-10 23:11:28,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:11:28,208 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:11:28,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:11:28,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1789564179, now seen corresponding path program 2 times [2022-02-10 23:11:28,208 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:11:28,208 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146005512] [2022-02-10 23:11:28,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:11:28,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:11:28,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:11:28,285 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:11:28,286 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:11:28,286 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146005512] [2022-02-10 23:11:28,286 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146005512] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 23:11:28,286 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 23:11:28,286 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-10 23:11:28,286 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908855790] [2022-02-10 23:11:28,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 23:11:28,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-10 23:11:28,287 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:11:28,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-10 23:11:28,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-02-10 23:11:28,287 INFO L87 Difference]: Start difference. First operand 369 states and 899 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:28,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:11:28,341 INFO L93 Difference]: Finished difference Result 470 states and 1119 transitions. [2022-02-10 23:11:28,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-10 23:11:28,341 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2022-02-10 23:11:28,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:11:28,345 INFO L225 Difference]: With dead ends: 470 [2022-02-10 23:11:28,345 INFO L226 Difference]: Without dead ends: 437 [2022-02-10 23:11:28,346 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-02-10 23:11:28,352 INFO L934 BasicCegarLoop]: 71 mSDtfsCounter, 83 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 23:11:28,352 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 209 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 23:11:28,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2022-02-10 23:11:28,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 369. [2022-02-10 23:11:28,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 368 states have (on average 2.4157608695652173) internal successors, (889), 368 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:28,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 889 transitions. [2022-02-10 23:11:28,365 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 889 transitions. Word has length 63 [2022-02-10 23:11:28,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:11:28,366 INFO L470 AbstractCegarLoop]: Abstraction has 369 states and 889 transitions. [2022-02-10 23:11:28,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:28,367 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 889 transitions. [2022-02-10 23:11:28,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-02-10 23:11:28,368 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:11:28,368 INFO L515 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] [2022-02-10 23:11:28,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-10 23:11:28,369 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:11:28,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:11:28,370 INFO L85 PathProgramCache]: Analyzing trace with hash -269043950, now seen corresponding path program 1 times [2022-02-10 23:11:28,370 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:11:28,370 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607973825] [2022-02-10 23:11:28,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:11:28,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:11:28,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:11:28,518 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:11:28,519 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:11:28,519 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607973825] [2022-02-10 23:11:28,519 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607973825] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:11:28,519 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889115189] [2022-02-10 23:11:28,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:11:28,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:11:28,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:11:28,520 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) [2022-02-10 23:11:28,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-10 23:11:28,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:11:28,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 18 conjunts are in the unsatisfiable core [2022-02-10 23:11:28,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:11:28,852 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:11:28,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:11:29,090 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:11:29,090 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889115189] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:11:29,090 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:11:29,090 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 10] total 24 [2022-02-10 23:11:29,090 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363496069] [2022-02-10 23:11:29,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:11:29,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-10 23:11:29,091 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:11:29,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-10 23:11:29,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=480, Unknown=0, NotChecked=0, Total=552 [2022-02-10 23:11:29,092 INFO L87 Difference]: Start difference. First operand 369 states and 889 transitions. Second operand has 24 states, 24 states have (on average 5.666666666666667) internal successors, (136), 24 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:30,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:11:30,511 INFO L93 Difference]: Finished difference Result 1418 states and 3453 transitions. [2022-02-10 23:11:30,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-02-10 23:11:30,513 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.666666666666667) internal successors, (136), 24 states have internal predecessors, (136), 0 states have call successors, (0), 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 67 [2022-02-10 23:11:30,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:11:30,518 INFO L225 Difference]: With dead ends: 1418 [2022-02-10 23:11:30,519 INFO L226 Difference]: Without dead ends: 1367 [2022-02-10 23:11:30,520 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1459 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1023, Invalid=4677, Unknown=0, NotChecked=0, Total=5700 [2022-02-10 23:11:30,521 INFO L934 BasicCegarLoop]: 177 mSDtfsCounter, 845 mSDsluCounter, 2200 mSDsCounter, 0 mSdLazyCounter, 982 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 845 SdHoareTripleChecker+Valid, 2209 SdHoareTripleChecker+Invalid, 1050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 23:11:30,521 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [845 Valid, 2209 Invalid, 1050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 982 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 23:11:30,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1367 states. [2022-02-10 23:11:30,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1367 to 654. [2022-02-10 23:11:30,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 653 states have (on average 2.5068912710566615) internal successors, (1637), 653 states have internal predecessors, (1637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:30,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 1637 transitions. [2022-02-10 23:11:30,538 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 1637 transitions. Word has length 67 [2022-02-10 23:11:30,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:11:30,538 INFO L470 AbstractCegarLoop]: Abstraction has 654 states and 1637 transitions. [2022-02-10 23:11:30,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.666666666666667) internal successors, (136), 24 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:30,538 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 1637 transitions. [2022-02-10 23:11:30,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-02-10 23:11:30,539 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:11:30,539 INFO L515 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] [2022-02-10 23:11:30,561 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-10 23:11:30,754 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,SelfDestructingSolverStorable6 [2022-02-10 23:11:30,754 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:11:30,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:11:30,755 INFO L85 PathProgramCache]: Analyzing trace with hash 671283466, now seen corresponding path program 2 times [2022-02-10 23:11:30,755 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:11:30,755 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876120746] [2022-02-10 23:11:30,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:11:30,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:11:30,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:11:30,887 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:11:30,887 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:11:30,887 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876120746] [2022-02-10 23:11:30,887 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876120746] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:11:30,887 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544814017] [2022-02-10 23:11:30,888 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 23:11:30,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:11:30,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:11:30,889 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) [2022-02-10 23:11:30,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-10 23:11:30,956 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:11:30,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:11:30,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 18 conjunts are in the unsatisfiable core [2022-02-10 23:11:30,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:11:31,224 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:11:31,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:11:31,477 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:11:31,478 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544814017] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:11:31,478 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:11:31,478 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 10] total 24 [2022-02-10 23:11:31,478 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653776217] [2022-02-10 23:11:31,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:11:31,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-10 23:11:31,478 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:11:31,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-10 23:11:31,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=482, Unknown=0, NotChecked=0, Total=552 [2022-02-10 23:11:31,479 INFO L87 Difference]: Start difference. First operand 654 states and 1637 transitions. Second operand has 24 states, 24 states have (on average 5.791666666666667) internal successors, (139), 24 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:33,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:11:33,040 INFO L93 Difference]: Finished difference Result 2313 states and 5964 transitions. [2022-02-10 23:11:33,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-02-10 23:11:33,041 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.791666666666667) internal successors, (139), 24 states have internal predecessors, (139), 0 states have call successors, (0), 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 67 [2022-02-10 23:11:33,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:11:33,049 INFO L225 Difference]: With dead ends: 2313 [2022-02-10 23:11:33,049 INFO L226 Difference]: Without dead ends: 2262 [2022-02-10 23:11:33,050 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1461 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1036, Invalid=4816, Unknown=0, NotChecked=0, Total=5852 [2022-02-10 23:11:33,051 INFO L934 BasicCegarLoop]: 145 mSDtfsCounter, 704 mSDsluCounter, 2123 mSDsCounter, 0 mSdLazyCounter, 994 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 2115 SdHoareTripleChecker+Invalid, 1078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 23:11:33,051 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [704 Valid, 2115 Invalid, 1078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 994 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 23:11:33,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2262 states. [2022-02-10 23:11:33,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2262 to 1030. [2022-02-10 23:11:33,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1030 states, 1029 states have (on average 2.7084548104956268) internal successors, (2787), 1029 states have internal predecessors, (2787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:33,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1030 states to 1030 states and 2787 transitions. [2022-02-10 23:11:33,083 INFO L78 Accepts]: Start accepts. Automaton has 1030 states and 2787 transitions. Word has length 67 [2022-02-10 23:11:33,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:11:33,083 INFO L470 AbstractCegarLoop]: Abstraction has 1030 states and 2787 transitions. [2022-02-10 23:11:33,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.791666666666667) internal successors, (139), 24 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:33,083 INFO L276 IsEmpty]: Start isEmpty. Operand 1030 states and 2787 transitions. [2022-02-10 23:11:33,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-02-10 23:11:33,088 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:11:33,088 INFO L515 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] [2022-02-10 23:11:33,107 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-02-10 23:11:33,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:11:33,296 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:11:33,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:11:33,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1299249746, now seen corresponding path program 3 times [2022-02-10 23:11:33,296 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:11:33,296 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295363396] [2022-02-10 23:11:33,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:11:33,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:11:33,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:11:33,389 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:11:33,389 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:11:33,389 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295363396] [2022-02-10 23:11:33,389 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295363396] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 23:11:33,389 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 23:11:33,389 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-10 23:11:33,389 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259784725] [2022-02-10 23:11:33,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 23:11:33,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-10 23:11:33,390 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:11:33,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-10 23:11:33,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-02-10 23:11:33,390 INFO L87 Difference]: Start difference. First operand 1030 states and 2787 transitions. Second operand has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:33,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:11:33,600 INFO L93 Difference]: Finished difference Result 1297 states and 3485 transitions. [2022-02-10 23:11:33,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-10 23:11:33,601 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-02-10 23:11:33,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:11:33,606 INFO L225 Difference]: With dead ends: 1297 [2022-02-10 23:11:33,606 INFO L226 Difference]: Without dead ends: 1246 [2022-02-10 23:11:33,606 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=123, Invalid=477, Unknown=0, NotChecked=0, Total=600 [2022-02-10 23:11:33,608 INFO L934 BasicCegarLoop]: 108 mSDtfsCounter, 116 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 885 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:11:33,608 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 885 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:11:33,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1246 states. [2022-02-10 23:11:33,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1246 to 1070. [2022-02-10 23:11:33,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1070 states, 1069 states have (on average 2.7100093545369504) internal successors, (2897), 1069 states have internal predecessors, (2897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:33,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 2897 transitions. [2022-02-10 23:11:33,632 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 2897 transitions. Word has length 67 [2022-02-10 23:11:33,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:11:33,632 INFO L470 AbstractCegarLoop]: Abstraction has 1070 states and 2897 transitions. [2022-02-10 23:11:33,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:33,632 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 2897 transitions. [2022-02-10 23:11:33,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-02-10 23:11:33,634 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:11:33,634 INFO L515 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] [2022-02-10 23:11:33,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-02-10 23:11:33,635 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:11:33,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:11:33,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1756265754, now seen corresponding path program 4 times [2022-02-10 23:11:33,636 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:11:33,636 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699282843] [2022-02-10 23:11:33,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:11:33,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:11:33,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:11:33,764 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:11:33,764 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:11:33,764 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699282843] [2022-02-10 23:11:33,764 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699282843] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:11:33,764 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460183454] [2022-02-10 23:11:33,764 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 23:11:33,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:11:33,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:11:33,766 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) [2022-02-10 23:11:33,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-10 23:11:33,829 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 23:11:33,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:11:33,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 18 conjunts are in the unsatisfiable core [2022-02-10 23:11:33,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:11:34,077 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:11:34,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:11:34,305 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:11:34,305 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460183454] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:11:34,306 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:11:34,306 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 10] total 24 [2022-02-10 23:11:34,306 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502132954] [2022-02-10 23:11:34,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:11:34,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-10 23:11:34,306 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:11:34,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-10 23:11:34,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=485, Unknown=0, NotChecked=0, Total=552 [2022-02-10 23:11:34,307 INFO L87 Difference]: Start difference. First operand 1070 states and 2897 transitions. Second operand has 24 states, 24 states have (on average 5.666666666666667) internal successors, (136), 24 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:35,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:11:35,324 INFO L93 Difference]: Finished difference Result 2257 states and 6087 transitions. [2022-02-10 23:11:35,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-02-10 23:11:35,325 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.666666666666667) internal successors, (136), 24 states have internal predecessors, (136), 0 states have call successors, (0), 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 67 [2022-02-10 23:11:35,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:11:35,332 INFO L225 Difference]: With dead ends: 2257 [2022-02-10 23:11:35,332 INFO L226 Difference]: Without dead ends: 2206 [2022-02-10 23:11:35,333 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 122 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 722 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=529, Invalid=2777, Unknown=0, NotChecked=0, Total=3306 [2022-02-10 23:11:35,333 INFO L934 BasicCegarLoop]: 134 mSDtfsCounter, 384 mSDsluCounter, 2171 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 2167 SdHoareTripleChecker+Invalid, 1066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 23:11:35,333 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [384 Valid, 2167 Invalid, 1066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1009 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 23:11:35,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2206 states. [2022-02-10 23:11:35,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2206 to 1294. [2022-02-10 23:11:35,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1294 states, 1293 states have (on average 2.7633410672853826) internal successors, (3573), 1293 states have internal predecessors, (3573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:35,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1294 states to 1294 states and 3573 transitions. [2022-02-10 23:11:35,365 INFO L78 Accepts]: Start accepts. Automaton has 1294 states and 3573 transitions. Word has length 67 [2022-02-10 23:11:35,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:11:35,365 INFO L470 AbstractCegarLoop]: Abstraction has 1294 states and 3573 transitions. [2022-02-10 23:11:35,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.666666666666667) internal successors, (136), 24 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:35,366 INFO L276 IsEmpty]: Start isEmpty. Operand 1294 states and 3573 transitions. [2022-02-10 23:11:35,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-02-10 23:11:35,370 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:11:35,370 INFO L515 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] [2022-02-10 23:11:35,398 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-02-10 23:11:35,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:11:35,586 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:11:35,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:11:35,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1118977604, now seen corresponding path program 5 times [2022-02-10 23:11:35,587 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:11:35,587 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489497177] [2022-02-10 23:11:35,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:11:35,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:11:35,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:11:35,691 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:11:35,692 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:11:35,692 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489497177] [2022-02-10 23:11:35,692 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489497177] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:11:35,692 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559779501] [2022-02-10 23:11:35,692 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 23:11:35,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:11:35,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:11:35,693 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) [2022-02-10 23:11:35,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-02-10 23:11:35,743 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:11:35,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:11:35,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 18 conjunts are in the unsatisfiable core [2022-02-10 23:11:35,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:11:35,993 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:11:35,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:11:36,236 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:11:36,237 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559779501] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:11:36,237 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:11:36,237 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 10] total 24 [2022-02-10 23:11:36,237 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675420712] [2022-02-10 23:11:36,237 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:11:36,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-10 23:11:36,237 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:11:36,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-10 23:11:36,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=484, Unknown=0, NotChecked=0, Total=552 [2022-02-10 23:11:36,238 INFO L87 Difference]: Start difference. First operand 1294 states and 3573 transitions. Second operand has 24 states, 24 states have (on average 5.791666666666667) internal successors, (139), 24 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:37,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:11:37,138 INFO L93 Difference]: Finished difference Result 2405 states and 6522 transitions. [2022-02-10 23:11:37,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-10 23:11:37,140 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.791666666666667) internal successors, (139), 24 states have internal predecessors, (139), 0 states have call successors, (0), 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 67 [2022-02-10 23:11:37,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:11:37,148 INFO L225 Difference]: With dead ends: 2405 [2022-02-10 23:11:37,148 INFO L226 Difference]: Without dead ends: 2354 [2022-02-10 23:11:37,149 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 122 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=458, Invalid=2298, Unknown=0, NotChecked=0, Total=2756 [2022-02-10 23:11:37,149 INFO L934 BasicCegarLoop]: 129 mSDtfsCounter, 427 mSDsluCounter, 2151 mSDsCounter, 0 mSdLazyCounter, 1011 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 2123 SdHoareTripleChecker+Invalid, 1063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 23:11:37,149 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [427 Valid, 2123 Invalid, 1063 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1011 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 23:11:37,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2354 states. [2022-02-10 23:11:37,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2354 to 1598. [2022-02-10 23:11:37,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1598 states, 1597 states have (on average 2.8058860363180966) internal successors, (4481), 1597 states have internal predecessors, (4481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:37,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1598 states to 1598 states and 4481 transitions. [2022-02-10 23:11:37,184 INFO L78 Accepts]: Start accepts. Automaton has 1598 states and 4481 transitions. Word has length 67 [2022-02-10 23:11:37,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:11:37,184 INFO L470 AbstractCegarLoop]: Abstraction has 1598 states and 4481 transitions. [2022-02-10 23:11:37,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.791666666666667) internal successors, (139), 24 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:37,185 INFO L276 IsEmpty]: Start isEmpty. Operand 1598 states and 4481 transitions. [2022-02-10 23:11:37,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-02-10 23:11:37,187 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:11:37,187 INFO L515 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] [2022-02-10 23:11:37,207 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-02-10 23:11:37,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-02-10 23:11:37,404 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:11:37,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:11:37,404 INFO L85 PathProgramCache]: Analyzing trace with hash 611084842, now seen corresponding path program 6 times [2022-02-10 23:11:37,404 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:11:37,404 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343096623] [2022-02-10 23:11:37,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:11:37,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:11:37,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:11:37,510 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:11:37,510 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:11:37,510 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343096623] [2022-02-10 23:11:37,510 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343096623] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:11:37,510 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706244343] [2022-02-10 23:11:37,510 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 23:11:37,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:11:37,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:11:37,511 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) [2022-02-10 23:11:37,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-02-10 23:11:37,554 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-10 23:11:37,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:11:37,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 18 conjunts are in the unsatisfiable core [2022-02-10 23:11:37,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:11:37,818 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:11:37,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:11:38,042 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:11:38,043 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [706244343] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:11:38,043 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:11:38,043 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 10] total 24 [2022-02-10 23:11:38,043 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939706799] [2022-02-10 23:11:38,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:11:38,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-10 23:11:38,043 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:11:38,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-10 23:11:38,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=485, Unknown=0, NotChecked=0, Total=552 [2022-02-10 23:11:38,044 INFO L87 Difference]: Start difference. First operand 1598 states and 4481 transitions. Second operand has 24 states, 24 states have (on average 5.666666666666667) internal successors, (136), 24 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:39,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:11:39,371 INFO L93 Difference]: Finished difference Result 3131 states and 8611 transitions. [2022-02-10 23:11:39,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-02-10 23:11:39,371 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.666666666666667) internal successors, (136), 24 states have internal predecessors, (136), 0 states have call successors, (0), 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 67 [2022-02-10 23:11:39,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:11:39,382 INFO L225 Difference]: With dead ends: 3131 [2022-02-10 23:11:39,382 INFO L226 Difference]: Without dead ends: 3080 [2022-02-10 23:11:39,384 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 122 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1244 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=908, Invalid=4348, Unknown=0, NotChecked=0, Total=5256 [2022-02-10 23:11:39,384 INFO L934 BasicCegarLoop]: 141 mSDtfsCounter, 453 mSDsluCounter, 2242 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 2243 SdHoareTripleChecker+Invalid, 1130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 23:11:39,384 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [453 Valid, 2243 Invalid, 1130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1063 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 23:11:39,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3080 states. [2022-02-10 23:11:39,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3080 to 1882. [2022-02-10 23:11:39,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1882 states, 1881 states have (on average 2.8399787347155767) internal successors, (5342), 1881 states have internal predecessors, (5342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:39,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1882 states to 1882 states and 5342 transitions. [2022-02-10 23:11:39,440 INFO L78 Accepts]: Start accepts. Automaton has 1882 states and 5342 transitions. Word has length 67 [2022-02-10 23:11:39,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:11:39,440 INFO L470 AbstractCegarLoop]: Abstraction has 1882 states and 5342 transitions. [2022-02-10 23:11:39,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.666666666666667) internal successors, (136), 24 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:39,440 INFO L276 IsEmpty]: Start isEmpty. Operand 1882 states and 5342 transitions. [2022-02-10 23:11:39,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-02-10 23:11:39,443 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:11:39,443 INFO L515 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] [2022-02-10 23:11:39,459 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-02-10 23:11:39,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:11:39,659 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:11:39,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:11:39,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1612226274, now seen corresponding path program 7 times [2022-02-10 23:11:39,660 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:11:39,660 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585946864] [2022-02-10 23:11:39,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:11:39,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:11:39,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:11:39,755 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:11:39,755 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:11:39,755 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585946864] [2022-02-10 23:11:39,759 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585946864] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 23:11:39,759 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 23:11:39,759 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-10 23:11:39,759 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840044613] [2022-02-10 23:11:39,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 23:11:39,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-10 23:11:39,760 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:11:39,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-10 23:11:39,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-02-10 23:11:39,760 INFO L87 Difference]: Start difference. First operand 1882 states and 5342 transitions. Second operand has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:39,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:11:39,885 INFO L93 Difference]: Finished difference Result 2241 states and 6313 transitions. [2022-02-10 23:11:39,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-10 23:11:39,891 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-02-10 23:11:39,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:11:39,910 INFO L225 Difference]: With dead ends: 2241 [2022-02-10 23:11:39,911 INFO L226 Difference]: Without dead ends: 2190 [2022-02-10 23:11:39,911 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2022-02-10 23:11:39,911 INFO L934 BasicCegarLoop]: 99 mSDtfsCounter, 105 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:11:39,912 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 646 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:11:39,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2190 states. [2022-02-10 23:11:39,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2190 to 1942. [2022-02-10 23:11:39,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1942 states, 1941 states have (on average 2.8433797011849564) internal successors, (5519), 1941 states have internal predecessors, (5519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:39,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1942 states to 1942 states and 5519 transitions. [2022-02-10 23:11:39,951 INFO L78 Accepts]: Start accepts. Automaton has 1942 states and 5519 transitions. Word has length 67 [2022-02-10 23:11:39,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:11:39,951 INFO L470 AbstractCegarLoop]: Abstraction has 1942 states and 5519 transitions. [2022-02-10 23:11:39,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:39,952 INFO L276 IsEmpty]: Start isEmpty. Operand 1942 states and 5519 transitions. [2022-02-10 23:11:39,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-02-10 23:11:39,955 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:11:39,955 INFO L515 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] [2022-02-10 23:11:39,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-02-10 23:11:39,955 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:11:39,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:11:39,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1734679074, now seen corresponding path program 8 times [2022-02-10 23:11:39,956 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:11:39,956 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713739006] [2022-02-10 23:11:39,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:11:39,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:11:39,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:11:40,084 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:11:40,084 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:11:40,085 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713739006] [2022-02-10 23:11:40,085 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713739006] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:11:40,085 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905117005] [2022-02-10 23:11:40,085 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 23:11:40,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:11:40,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:11:40,086 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) [2022-02-10 23:11:40,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-02-10 23:11:40,137 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:11:40,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:11:40,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 15 conjunts are in the unsatisfiable core [2022-02-10 23:11:40,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:11:40,382 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:11:40,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:11:40,655 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:11:40,655 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905117005] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:11:40,655 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:11:40,655 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 22 [2022-02-10 23:11:40,656 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365046611] [2022-02-10 23:11:40,656 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:11:40,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 23:11:40,656 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:11:40,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 23:11:40,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2022-02-10 23:11:40,657 INFO L87 Difference]: Start difference. First operand 1942 states and 5519 transitions. Second operand has 22 states, 22 states have (on average 4.545454545454546) internal successors, (100), 22 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:40,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:11:40,891 INFO L93 Difference]: Finished difference Result 2313 states and 6511 transitions. [2022-02-10 23:11:40,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-10 23:11:40,891 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.545454545454546) internal successors, (100), 22 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-02-10 23:11:40,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:11:40,896 INFO L225 Difference]: With dead ends: 2313 [2022-02-10 23:11:40,897 INFO L226 Difference]: Without dead ends: 2166 [2022-02-10 23:11:40,897 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=153, Invalid=717, Unknown=0, NotChecked=0, Total=870 [2022-02-10 23:11:40,897 INFO L934 BasicCegarLoop]: 107 mSDtfsCounter, 171 mSDsluCounter, 846 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:11:40,898 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 904 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:11:40,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2166 states. [2022-02-10 23:11:40,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2166 to 1946. [2022-02-10 23:11:40,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1946 states, 1945 states have (on average 2.837017994858612) internal successors, (5518), 1945 states have internal predecessors, (5518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:40,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1946 states to 1946 states and 5518 transitions. [2022-02-10 23:11:40,937 INFO L78 Accepts]: Start accepts. Automaton has 1946 states and 5518 transitions. Word has length 67 [2022-02-10 23:11:40,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:11:40,937 INFO L470 AbstractCegarLoop]: Abstraction has 1946 states and 5518 transitions. [2022-02-10 23:11:40,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.545454545454546) internal successors, (100), 22 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:40,937 INFO L276 IsEmpty]: Start isEmpty. Operand 1946 states and 5518 transitions. [2022-02-10 23:11:40,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-02-10 23:11:40,941 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:11:40,941 INFO L515 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] [2022-02-10 23:11:40,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-02-10 23:11:41,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:11:41,155 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:11:41,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:11:41,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1013282806, now seen corresponding path program 9 times [2022-02-10 23:11:41,156 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:11:41,156 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342163667] [2022-02-10 23:11:41,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:11:41,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:11:41,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:11:41,252 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:11:41,252 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:11:41,252 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342163667] [2022-02-10 23:11:41,252 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342163667] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:11:41,252 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56308972] [2022-02-10 23:11:41,252 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 23:11:41,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:11:41,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:11:41,253 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:11:41,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-02-10 23:11:41,299 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-10 23:11:41,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:11:41,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 15 conjunts are in the unsatisfiable core [2022-02-10 23:11:41,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:11:41,528 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:11:41,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:11:41,758 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:11:41,759 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56308972] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:11:41,759 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:11:41,759 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 21 [2022-02-10 23:11:41,759 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937515103] [2022-02-10 23:11:41,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:11:41,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 23:11:41,759 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:11:41,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 23:11:41,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2022-02-10 23:11:41,760 INFO L87 Difference]: Start difference. First operand 1946 states and 5518 transitions. Second operand has 21 states, 21 states have (on average 4.714285714285714) internal successors, (99), 21 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:42,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:11:42,030 INFO L93 Difference]: Finished difference Result 2237 states and 6294 transitions. [2022-02-10 23:11:42,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-10 23:11:42,030 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.714285714285714) internal successors, (99), 21 states have internal predecessors, (99), 0 states have call successors, (0), 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 67 [2022-02-10 23:11:42,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:11:42,035 INFO L225 Difference]: With dead ends: 2237 [2022-02-10 23:11:42,035 INFO L226 Difference]: Without dead ends: 2138 [2022-02-10 23:11:42,035 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 122 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=156, Invalid=774, Unknown=0, NotChecked=0, Total=930 [2022-02-10 23:11:42,036 INFO L934 BasicCegarLoop]: 116 mSDtfsCounter, 201 mSDsluCounter, 1142 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:11:42,036 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [201 Valid, 1179 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:11:42,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2138 states. [2022-02-10 23:11:42,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2138 to 1914. [2022-02-10 23:11:42,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1914 states, 1913 states have (on average 2.8384736016727654) internal successors, (5430), 1913 states have internal predecessors, (5430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:42,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1914 states to 1914 states and 5430 transitions. [2022-02-10 23:11:42,085 INFO L78 Accepts]: Start accepts. Automaton has 1914 states and 5430 transitions. Word has length 67 [2022-02-10 23:11:42,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:11:42,085 INFO L470 AbstractCegarLoop]: Abstraction has 1914 states and 5430 transitions. [2022-02-10 23:11:42,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.714285714285714) internal successors, (99), 21 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:42,085 INFO L276 IsEmpty]: Start isEmpty. Operand 1914 states and 5430 transitions. [2022-02-10 23:11:42,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-02-10 23:11:42,089 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:11:42,089 INFO L515 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] [2022-02-10 23:11:42,107 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-02-10 23:11:42,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-02-10 23:11:42,306 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:11:42,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:11:42,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1563913122, now seen corresponding path program 10 times [2022-02-10 23:11:42,306 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:11:42,306 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726843919] [2022-02-10 23:11:42,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:11:42,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:11:42,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:11:42,389 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:11:42,390 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:11:42,390 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726843919] [2022-02-10 23:11:42,390 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726843919] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:11:42,390 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688855698] [2022-02-10 23:11:42,390 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 23:11:42,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:11:42,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:11:42,392 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:11:42,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-02-10 23:11:42,434 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 23:11:42,434 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:11:42,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 18 conjunts are in the unsatisfiable core [2022-02-10 23:11:42,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:11:42,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:11:42,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:11:42,921 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:11:42,921 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688855698] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:11:42,921 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:11:42,921 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 10] total 24 [2022-02-10 23:11:42,921 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746049606] [2022-02-10 23:11:42,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:11:42,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-10 23:11:42,922 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:11:42,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-10 23:11:42,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=482, Unknown=0, NotChecked=0, Total=552 [2022-02-10 23:11:42,922 INFO L87 Difference]: Start difference. First operand 1914 states and 5430 transitions. Second operand has 24 states, 24 states have (on average 5.666666666666667) internal successors, (136), 24 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:43,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:11:43,917 INFO L93 Difference]: Finished difference Result 3324 states and 9105 transitions. [2022-02-10 23:11:43,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-02-10 23:11:43,918 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.666666666666667) internal successors, (136), 24 states have internal predecessors, (136), 0 states have call successors, (0), 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 67 [2022-02-10 23:11:43,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:11:43,924 INFO L225 Difference]: With dead ends: 3324 [2022-02-10 23:11:43,924 INFO L226 Difference]: Without dead ends: 3273 [2022-02-10 23:11:43,925 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 840 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=647, Invalid=3013, Unknown=0, NotChecked=0, Total=3660 [2022-02-10 23:11:43,925 INFO L934 BasicCegarLoop]: 160 mSDtfsCounter, 679 mSDsluCounter, 2355 mSDsCounter, 0 mSdLazyCounter, 1095 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 679 SdHoareTripleChecker+Valid, 2317 SdHoareTripleChecker+Invalid, 1142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 23:11:43,925 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [679 Valid, 2317 Invalid, 1142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1095 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 23:11:43,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3273 states. [2022-02-10 23:11:43,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3273 to 2282. [2022-02-10 23:11:43,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2282 states, 2281 states have (on average 2.8540113985094258) internal successors, (6510), 2281 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:43,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2282 states to 2282 states and 6510 transitions. [2022-02-10 23:11:43,967 INFO L78 Accepts]: Start accepts. Automaton has 2282 states and 6510 transitions. Word has length 67 [2022-02-10 23:11:43,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:11:43,967 INFO L470 AbstractCegarLoop]: Abstraction has 2282 states and 6510 transitions. [2022-02-10 23:11:43,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.666666666666667) internal successors, (136), 24 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:43,967 INFO L276 IsEmpty]: Start isEmpty. Operand 2282 states and 6510 transitions. [2022-02-10 23:11:43,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-02-10 23:11:43,971 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:11:43,972 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:11:43,990 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-02-10 23:11:44,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-02-10 23:11:44,179 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:11:44,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:11:44,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1912541999, now seen corresponding path program 11 times [2022-02-10 23:11:44,180 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:11:44,180 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729420577] [2022-02-10 23:11:44,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:11:44,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:11:44,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:11:44,255 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:11:44,255 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:11:44,255 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729420577] [2022-02-10 23:11:44,255 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729420577] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:11:44,256 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147491917] [2022-02-10 23:11:44,256 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 23:11:44,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:11:44,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:11:44,257 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:11:44,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-02-10 23:11:44,305 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 23:11:44,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:11:44,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-10 23:11:44,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:11:44,518 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:11:44,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:11:44,696 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:11:44,696 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147491917] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:11:44,696 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:11:44,696 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2022-02-10 23:11:44,696 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245418477] [2022-02-10 23:11:44,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:11:44,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 23:11:44,697 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:11:44,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 23:11:44,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2022-02-10 23:11:44,697 INFO L87 Difference]: Start difference. First operand 2282 states and 6510 transitions. Second operand has 21 states, 21 states have (on average 5.285714285714286) internal successors, (111), 21 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:45,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:11:45,059 INFO L93 Difference]: Finished difference Result 3199 states and 8900 transitions. [2022-02-10 23:11:45,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-10 23:11:45,059 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.285714285714286) internal successors, (111), 21 states have internal predecessors, (111), 0 states have call successors, (0), 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 71 [2022-02-10 23:11:45,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:11:45,066 INFO L225 Difference]: With dead ends: 3199 [2022-02-10 23:11:45,066 INFO L226 Difference]: Without dead ends: 3199 [2022-02-10 23:11:45,067 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 129 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=305, Invalid=885, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 23:11:45,067 INFO L934 BasicCegarLoop]: 117 mSDtfsCounter, 323 mSDsluCounter, 1076 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 1107 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 23:11:45,067 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 1107 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 23:11:45,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3199 states. [2022-02-10 23:11:45,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3199 to 2322. [2022-02-10 23:11:45,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2322 states, 2321 states have (on average 2.8694528220594573) internal successors, (6660), 2321 states have internal predecessors, (6660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:45,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2322 states to 2322 states and 6660 transitions. [2022-02-10 23:11:45,149 INFO L78 Accepts]: Start accepts. Automaton has 2322 states and 6660 transitions. Word has length 71 [2022-02-10 23:11:45,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:11:45,149 INFO L470 AbstractCegarLoop]: Abstraction has 2322 states and 6660 transitions. [2022-02-10 23:11:45,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.285714285714286) internal successors, (111), 21 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:45,149 INFO L276 IsEmpty]: Start isEmpty. Operand 2322 states and 6660 transitions. [2022-02-10 23:11:45,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-02-10 23:11:45,153 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:11:45,154 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:11:45,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-02-10 23:11:45,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-02-10 23:11:45,354 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:11:45,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:11:45,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1409022455, now seen corresponding path program 12 times [2022-02-10 23:11:45,355 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:11:45,355 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073174335] [2022-02-10 23:11:45,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:11:45,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:11:45,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:11:45,423 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:11:45,423 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:11:45,423 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073174335] [2022-02-10 23:11:45,423 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073174335] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:11:45,423 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079561990] [2022-02-10 23:11:45,423 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 23:11:45,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:11:45,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:11:45,425 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:11:45,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-02-10 23:11:45,477 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-10 23:11:45,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:11:45,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-10 23:11:45,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:11:45,687 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:11:45,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:11:45,941 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:11:45,942 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079561990] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:11:45,942 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:11:45,942 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2022-02-10 23:11:45,942 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914383492] [2022-02-10 23:11:45,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:11:45,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 23:11:45,943 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:11:45,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 23:11:45,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2022-02-10 23:11:45,943 INFO L87 Difference]: Start difference. First operand 2322 states and 6660 transitions. Second operand has 21 states, 21 states have (on average 5.190476190476191) internal successors, (109), 21 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:46,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:11:46,844 INFO L93 Difference]: Finished difference Result 4885 states and 13561 transitions. [2022-02-10 23:11:46,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-02-10 23:11:46,844 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.190476190476191) internal successors, (109), 21 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-02-10 23:11:46,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:11:46,855 INFO L225 Difference]: With dead ends: 4885 [2022-02-10 23:11:46,855 INFO L226 Difference]: Without dead ends: 4885 [2022-02-10 23:11:46,857 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 130 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1320 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=869, Invalid=3421, Unknown=0, NotChecked=0, Total=4290 [2022-02-10 23:11:46,857 INFO L934 BasicCegarLoop]: 133 mSDtfsCounter, 732 mSDsluCounter, 1338 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 732 SdHoareTripleChecker+Valid, 1377 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 23:11:46,857 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [732 Valid, 1377 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 615 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 23:11:46,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4885 states. [2022-02-10 23:11:46,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4885 to 2718. [2022-02-10 23:11:46,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2718 states, 2717 states have (on average 2.896209054103791) internal successors, (7869), 2717 states have internal predecessors, (7869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:46,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2718 states to 2718 states and 7869 transitions. [2022-02-10 23:11:46,938 INFO L78 Accepts]: Start accepts. Automaton has 2718 states and 7869 transitions. Word has length 71 [2022-02-10 23:11:46,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:11:46,938 INFO L470 AbstractCegarLoop]: Abstraction has 2718 states and 7869 transitions. [2022-02-10 23:11:46,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.190476190476191) internal successors, (109), 21 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:46,939 INFO L276 IsEmpty]: Start isEmpty. Operand 2718 states and 7869 transitions. [2022-02-10 23:11:46,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-02-10 23:11:46,945 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:11:46,945 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:11:46,982 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-02-10 23:11:47,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-02-10 23:11:47,168 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:11:47,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:11:47,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1047027179, now seen corresponding path program 13 times [2022-02-10 23:11:47,169 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:11:47,169 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344465938] [2022-02-10 23:11:47,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:11:47,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:11:47,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:11:47,234 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:11:47,234 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:11:47,234 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344465938] [2022-02-10 23:11:47,234 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344465938] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:11:47,235 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130992673] [2022-02-10 23:11:47,235 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 23:11:47,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:11:47,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:11:47,236 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:11:47,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-02-10 23:11:47,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:11:47,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 15 conjunts are in the unsatisfiable core [2022-02-10 23:11:47,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:11:47,507 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:11:47,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:11:47,744 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:11:47,745 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [130992673] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:11:47,745 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:11:47,745 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2022-02-10 23:11:47,745 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210255317] [2022-02-10 23:11:47,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:11:47,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-10 23:11:47,745 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:11:47,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-10 23:11:47,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506 [2022-02-10 23:11:47,746 INFO L87 Difference]: Start difference. First operand 2718 states and 7869 transitions. Second operand has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:48,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:11:48,313 INFO L93 Difference]: Finished difference Result 4480 states and 12587 transitions. [2022-02-10 23:11:48,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-10 23:11:48,313 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-02-10 23:11:48,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:11:48,321 INFO L225 Difference]: With dead ends: 4480 [2022-02-10 23:11:48,321 INFO L226 Difference]: Without dead ends: 4432 [2022-02-10 23:11:48,322 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=581, Invalid=2175, Unknown=0, NotChecked=0, Total=2756 [2022-02-10 23:11:48,323 INFO L934 BasicCegarLoop]: 117 mSDtfsCounter, 685 mSDsluCounter, 937 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 685 SdHoareTripleChecker+Valid, 999 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 23:11:48,323 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [685 Valid, 999 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 23:11:48,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4432 states. [2022-02-10 23:11:48,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4432 to 3038. [2022-02-10 23:11:48,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3038 states, 3037 states have (on average 2.900559762923938) internal successors, (8809), 3037 states have internal predecessors, (8809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:48,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3038 states to 3038 states and 8809 transitions. [2022-02-10 23:11:48,392 INFO L78 Accepts]: Start accepts. Automaton has 3038 states and 8809 transitions. Word has length 71 [2022-02-10 23:11:48,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:11:48,393 INFO L470 AbstractCegarLoop]: Abstraction has 3038 states and 8809 transitions. [2022-02-10 23:11:48,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:48,393 INFO L276 IsEmpty]: Start isEmpty. Operand 3038 states and 8809 transitions. [2022-02-10 23:11:48,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-02-10 23:11:48,399 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:11:48,399 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:11:48,415 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-02-10 23:11:48,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:11:48,615 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:11:48,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:11:48,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1201955951, now seen corresponding path program 14 times [2022-02-10 23:11:48,616 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:11:48,616 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721224480] [2022-02-10 23:11:48,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:11:48,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:11:48,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:11:48,691 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:11:48,691 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:11:48,691 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721224480] [2022-02-10 23:11:48,691 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721224480] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:11:48,691 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580978740] [2022-02-10 23:11:48,691 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 23:11:48,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:11:48,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:11:48,693 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:11:48,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-02-10 23:11:48,741 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:11:48,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:11:48,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-10 23:11:48,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:11:48,945 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:11:48,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:11:49,150 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:11:49,151 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580978740] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:11:49,151 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:11:49,151 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2022-02-10 23:11:49,151 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397500405] [2022-02-10 23:11:49,151 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:11:49,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-10 23:11:49,151 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:11:49,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-10 23:11:49,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2022-02-10 23:11:49,152 INFO L87 Difference]: Start difference. First operand 3038 states and 8809 transitions. Second operand has 23 states, 23 states have (on average 5.173913043478261) internal successors, (119), 23 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:49,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:11:49,899 INFO L93 Difference]: Finished difference Result 5199 states and 14824 transitions. [2022-02-10 23:11:49,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-10 23:11:49,900 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.173913043478261) internal successors, (119), 23 states have internal predecessors, (119), 0 states have call successors, (0), 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 71 [2022-02-10 23:11:49,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:11:49,907 INFO L225 Difference]: With dead ends: 5199 [2022-02-10 23:11:49,907 INFO L226 Difference]: Without dead ends: 5169 [2022-02-10 23:11:49,907 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 684 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=645, Invalid=2217, Unknown=0, NotChecked=0, Total=2862 [2022-02-10 23:11:49,908 INFO L934 BasicCegarLoop]: 119 mSDtfsCounter, 540 mSDsluCounter, 1411 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 540 SdHoareTripleChecker+Valid, 1437 SdHoareTripleChecker+Invalid, 809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 23:11:49,908 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [540 Valid, 1437 Invalid, 809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 23:11:49,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5169 states. [2022-02-10 23:11:49,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5169 to 3684. [2022-02-10 23:11:49,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3684 states, 3683 states have (on average 2.920716806950855) internal successors, (10757), 3683 states have internal predecessors, (10757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:49,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3684 states to 3684 states and 10757 transitions. [2022-02-10 23:11:49,973 INFO L78 Accepts]: Start accepts. Automaton has 3684 states and 10757 transitions. Word has length 71 [2022-02-10 23:11:49,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:11:49,973 INFO L470 AbstractCegarLoop]: Abstraction has 3684 states and 10757 transitions. [2022-02-10 23:11:49,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.173913043478261) internal successors, (119), 23 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:49,973 INFO L276 IsEmpty]: Start isEmpty. Operand 3684 states and 10757 transitions. [2022-02-10 23:11:49,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-02-10 23:11:49,982 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:11:49,982 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:11:49,998 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-02-10 23:11:50,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2022-02-10 23:11:50,195 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:11:50,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:11:50,196 INFO L85 PathProgramCache]: Analyzing trace with hash 952809681, now seen corresponding path program 15 times [2022-02-10 23:11:50,196 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:11:50,196 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074586004] [2022-02-10 23:11:50,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:11:50,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:11:50,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:11:50,266 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:11:50,266 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:11:50,266 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074586004] [2022-02-10 23:11:50,266 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074586004] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:11:50,266 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559457847] [2022-02-10 23:11:50,266 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 23:11:50,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:11:50,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:11:50,267 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:11:50,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-02-10 23:11:50,311 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-10 23:11:50,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:11:50,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-10 23:11:50,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:11:50,510 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:11:50,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:11:50,706 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:11:50,706 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559457847] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:11:50,706 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:11:50,706 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2022-02-10 23:11:50,706 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283164043] [2022-02-10 23:11:50,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:11:50,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 23:11:50,707 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:11:50,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 23:11:50,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2022-02-10 23:11:50,708 INFO L87 Difference]: Start difference. First operand 3684 states and 10757 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:51,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:11:51,434 INFO L93 Difference]: Finished difference Result 6071 states and 17298 transitions. [2022-02-10 23:11:51,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-10 23:11:51,434 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-02-10 23:11:51,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:11:51,444 INFO L225 Difference]: With dead ends: 6071 [2022-02-10 23:11:51,444 INFO L226 Difference]: Without dead ends: 5981 [2022-02-10 23:11:51,444 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 716 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=641, Invalid=2221, Unknown=0, NotChecked=0, Total=2862 [2022-02-10 23:11:51,445 INFO L934 BasicCegarLoop]: 112 mSDtfsCounter, 533 mSDsluCounter, 1117 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 1154 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 23:11:51,446 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [533 Valid, 1154 Invalid, 623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 23:11:51,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5981 states. [2022-02-10 23:11:51,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5981 to 3951. [2022-02-10 23:11:51,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3951 states, 3950 states have (on average 2.929873417721519) internal successors, (11573), 3950 states have internal predecessors, (11573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:51,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3951 states to 3951 states and 11573 transitions. [2022-02-10 23:11:51,524 INFO L78 Accepts]: Start accepts. Automaton has 3951 states and 11573 transitions. Word has length 71 [2022-02-10 23:11:51,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:11:51,524 INFO L470 AbstractCegarLoop]: Abstraction has 3951 states and 11573 transitions. [2022-02-10 23:11:51,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:51,525 INFO L276 IsEmpty]: Start isEmpty. Operand 3951 states and 11573 transitions. [2022-02-10 23:11:51,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-02-10 23:11:51,531 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:11:51,531 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:11:51,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-02-10 23:11:51,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:11:51,744 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:11:51,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:11:51,744 INFO L85 PathProgramCache]: Analyzing trace with hash 305680217, now seen corresponding path program 16 times [2022-02-10 23:11:51,744 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:11:51,744 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966563421] [2022-02-10 23:11:51,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:11:51,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:11:51,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:11:51,813 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:11:51,813 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:11:51,813 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966563421] [2022-02-10 23:11:51,813 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966563421] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:11:51,813 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965381225] [2022-02-10 23:11:51,813 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 23:11:51,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:11:51,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:11:51,816 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:11:51,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-02-10 23:11:51,875 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 23:11:51,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:11:51,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-10 23:11:51,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:11:52,058 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:11:52,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:11:52,227 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:11:52,228 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965381225] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:11:52,228 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:11:52,228 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2022-02-10 23:11:52,228 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431598420] [2022-02-10 23:11:52,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:11:52,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 23:11:52,228 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:11:52,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 23:11:52,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2022-02-10 23:11:52,229 INFO L87 Difference]: Start difference. First operand 3951 states and 11573 transitions. Second operand has 19 states, 19 states have (on average 5.947368421052632) internal successors, (113), 19 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:52,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:11:52,471 INFO L93 Difference]: Finished difference Result 4637 states and 13435 transitions. [2022-02-10 23:11:52,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-10 23:11:52,471 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.947368421052632) internal successors, (113), 19 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-02-10 23:11:52,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:11:52,479 INFO L225 Difference]: With dead ends: 4637 [2022-02-10 23:11:52,479 INFO L226 Difference]: Without dead ends: 4544 [2022-02-10 23:11:52,480 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 132 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2022-02-10 23:11:52,480 INFO L934 BasicCegarLoop]: 101 mSDtfsCounter, 246 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:11:52,480 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [246 Valid, 773 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:11:52,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4544 states. [2022-02-10 23:11:52,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4544 to 3951. [2022-02-10 23:11:52,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3951 states, 3950 states have (on average 2.9263291139240506) internal successors, (11559), 3950 states have internal predecessors, (11559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:52,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3951 states to 3951 states and 11559 transitions. [2022-02-10 23:11:52,559 INFO L78 Accepts]: Start accepts. Automaton has 3951 states and 11559 transitions. Word has length 71 [2022-02-10 23:11:52,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:11:52,559 INFO L470 AbstractCegarLoop]: Abstraction has 3951 states and 11559 transitions. [2022-02-10 23:11:52,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.947368421052632) internal successors, (113), 19 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:52,560 INFO L276 IsEmpty]: Start isEmpty. Operand 3951 states and 11559 transitions. [2022-02-10 23:11:52,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-02-10 23:11:52,568 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:11:52,568 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:11:52,594 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-02-10 23:11:52,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:11:52,791 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:11:52,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:11:52,791 INFO L85 PathProgramCache]: Analyzing trace with hash 443611529, now seen corresponding path program 17 times [2022-02-10 23:11:52,791 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:11:52,791 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904820859] [2022-02-10 23:11:52,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:11:52,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:11:52,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:11:52,862 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:11:52,862 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:11:52,862 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904820859] [2022-02-10 23:11:52,862 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904820859] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:11:52,862 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648890601] [2022-02-10 23:11:52,862 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 23:11:52,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:11:52,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:11:52,863 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:11:52,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-02-10 23:11:52,910 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 23:11:52,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:11:52,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-10 23:11:52,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:11:53,102 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:11:53,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:11:53,292 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:11:53,292 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648890601] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:11:53,292 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:11:53,292 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2022-02-10 23:11:53,292 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046115844] [2022-02-10 23:11:53,292 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:11:53,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 23:11:53,293 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:11:53,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 23:11:53,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2022-02-10 23:11:53,293 INFO L87 Difference]: Start difference. First operand 3951 states and 11559 transitions. Second operand has 21 states, 21 states have (on average 5.190476190476191) internal successors, (109), 21 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:53,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:11:53,981 INFO L93 Difference]: Finished difference Result 5841 states and 16642 transitions. [2022-02-10 23:11:53,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-02-10 23:11:53,981 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.190476190476191) internal successors, (109), 21 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-02-10 23:11:53,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:11:53,990 INFO L225 Difference]: With dead ends: 5841 [2022-02-10 23:11:53,990 INFO L226 Difference]: Without dead ends: 5841 [2022-02-10 23:11:53,991 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 130 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 900 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=610, Invalid=2696, Unknown=0, NotChecked=0, Total=3306 [2022-02-10 23:11:53,991 INFO L934 BasicCegarLoop]: 124 mSDtfsCounter, 604 mSDsluCounter, 1135 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 604 SdHoareTripleChecker+Valid, 1194 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 23:11:53,992 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [604 Valid, 1194 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 23:11:53,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5841 states. [2022-02-10 23:11:54,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5841 to 4323. [2022-02-10 23:11:54,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4323 states, 4322 states have (on average 2.93521517815826) internal successors, (12686), 4322 states have internal predecessors, (12686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:54,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4323 states to 4323 states and 12686 transitions. [2022-02-10 23:11:54,068 INFO L78 Accepts]: Start accepts. Automaton has 4323 states and 12686 transitions. Word has length 71 [2022-02-10 23:11:54,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:11:54,068 INFO L470 AbstractCegarLoop]: Abstraction has 4323 states and 12686 transitions. [2022-02-10 23:11:54,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.190476190476191) internal successors, (109), 21 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:54,068 INFO L276 IsEmpty]: Start isEmpty. Operand 4323 states and 12686 transitions. [2022-02-10 23:11:54,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-02-10 23:11:54,075 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:11:54,076 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:11:54,093 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-02-10 23:11:54,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-02-10 23:11:54,292 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:11:54,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:11:54,292 INFO L85 PathProgramCache]: Analyzing trace with hash -330252237, now seen corresponding path program 18 times [2022-02-10 23:11:54,292 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:11:54,292 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662064006] [2022-02-10 23:11:54,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:11:54,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:11:54,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:11:54,338 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:11:54,338 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:11:54,338 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662064006] [2022-02-10 23:11:54,338 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662064006] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:11:54,338 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918451480] [2022-02-10 23:11:54,339 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 23:11:54,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:11:54,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:11:54,340 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:11:54,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-02-10 23:11:54,393 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-10 23:11:54,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:11:54,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-10 23:11:54,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:11:54,583 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:11:54,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:11:54,775 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:11:54,776 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918451480] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:11:54,776 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:11:54,776 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 23 [2022-02-10 23:11:54,776 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425288410] [2022-02-10 23:11:54,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:11:54,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-10 23:11:54,776 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:11:54,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-10 23:11:54,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2022-02-10 23:11:54,777 INFO L87 Difference]: Start difference. First operand 4323 states and 12686 transitions. Second operand has 23 states, 23 states have (on average 5.173913043478261) internal successors, (119), 23 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:55,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:11:55,520 INFO L93 Difference]: Finished difference Result 6202 states and 17957 transitions. [2022-02-10 23:11:55,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-02-10 23:11:55,520 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.173913043478261) internal successors, (119), 23 states have internal predecessors, (119), 0 states have call successors, (0), 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 71 [2022-02-10 23:11:55,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:11:55,529 INFO L225 Difference]: With dead ends: 6202 [2022-02-10 23:11:55,530 INFO L226 Difference]: Without dead ends: 6166 [2022-02-10 23:11:55,530 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 825 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=720, Invalid=2702, Unknown=0, NotChecked=0, Total=3422 [2022-02-10 23:11:55,531 INFO L934 BasicCegarLoop]: 112 mSDtfsCounter, 783 mSDsluCounter, 1125 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 783 SdHoareTripleChecker+Valid, 1187 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 23:11:55,531 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [783 Valid, 1187 Invalid, 721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 624 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 23:11:55,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6166 states. [2022-02-10 23:11:55,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6166 to 4571. [2022-02-10 23:11:55,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4571 states, 4570 states have (on average 2.9330415754923416) internal successors, (13404), 4570 states have internal predecessors, (13404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:55,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4571 states to 4571 states and 13404 transitions. [2022-02-10 23:11:55,606 INFO L78 Accepts]: Start accepts. Automaton has 4571 states and 13404 transitions. Word has length 71 [2022-02-10 23:11:55,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:11:55,606 INFO L470 AbstractCegarLoop]: Abstraction has 4571 states and 13404 transitions. [2022-02-10 23:11:55,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.173913043478261) internal successors, (119), 23 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:55,606 INFO L276 IsEmpty]: Start isEmpty. Operand 4571 states and 13404 transitions. [2022-02-10 23:11:55,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-02-10 23:11:55,614 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:11:55,614 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:11:55,632 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-02-10 23:11:55,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:11:55,822 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:11:55,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:11:55,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1918730893, now seen corresponding path program 19 times [2022-02-10 23:11:55,823 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:11:55,823 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418002629] [2022-02-10 23:11:55,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:11:55,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:11:55,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:11:55,901 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:11:55,901 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:11:55,901 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418002629] [2022-02-10 23:11:55,901 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418002629] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:11:55,901 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534622241] [2022-02-10 23:11:55,901 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 23:11:55,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:11:55,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:11:55,904 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:11:55,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-02-10 23:11:55,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:11:55,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-10 23:11:55,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:11:56,158 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:11:56,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:11:56,383 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:11:56,383 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534622241] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:11:56,383 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:11:56,384 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2022-02-10 23:11:56,384 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617150498] [2022-02-10 23:11:56,384 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:11:56,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-10 23:11:56,384 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:11:56,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-10 23:11:56,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2022-02-10 23:11:56,385 INFO L87 Difference]: Start difference. First operand 4571 states and 13404 transitions. Second operand has 23 states, 23 states have (on average 5.173913043478261) internal successors, (119), 23 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:57,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:11:57,127 INFO L93 Difference]: Finished difference Result 6333 states and 18404 transitions. [2022-02-10 23:11:57,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-10 23:11:57,128 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.173913043478261) internal successors, (119), 23 states have internal predecessors, (119), 0 states have call successors, (0), 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 71 [2022-02-10 23:11:57,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:11:57,139 INFO L225 Difference]: With dead ends: 6333 [2022-02-10 23:11:57,140 INFO L226 Difference]: Without dead ends: 6303 [2022-02-10 23:11:57,140 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 680 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=578, Invalid=2284, Unknown=0, NotChecked=0, Total=2862 [2022-02-10 23:11:57,141 INFO L934 BasicCegarLoop]: 119 mSDtfsCounter, 501 mSDsluCounter, 1222 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 1280 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 23:11:57,141 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [501 Valid, 1280 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 23:11:57,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6303 states. [2022-02-10 23:11:57,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6303 to 4979. [2022-02-10 23:11:57,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4979 states, 4978 states have (on average 2.9373242265970267) internal successors, (14622), 4978 states have internal predecessors, (14622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:57,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4979 states to 4979 states and 14622 transitions. [2022-02-10 23:11:57,230 INFO L78 Accepts]: Start accepts. Automaton has 4979 states and 14622 transitions. Word has length 71 [2022-02-10 23:11:57,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:11:57,230 INFO L470 AbstractCegarLoop]: Abstraction has 4979 states and 14622 transitions. [2022-02-10 23:11:57,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.173913043478261) internal successors, (119), 23 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:57,230 INFO L276 IsEmpty]: Start isEmpty. Operand 4979 states and 14622 transitions. [2022-02-10 23:11:57,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-02-10 23:11:57,238 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:11:57,239 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:11:57,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-02-10 23:11:57,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:11:57,451 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:11:57,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:11:57,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1669584623, now seen corresponding path program 20 times [2022-02-10 23:11:57,452 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:11:57,452 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836079670] [2022-02-10 23:11:57,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:11:57,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:11:57,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:11:57,519 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:11:57,519 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:11:57,519 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836079670] [2022-02-10 23:11:57,520 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836079670] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:11:57,520 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482470143] [2022-02-10 23:11:57,520 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 23:11:57,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:11:57,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:11:57,521 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:11:57,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-02-10 23:11:57,575 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:11:57,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:11:57,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-10 23:11:57,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:11:57,793 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:11:57,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:11:57,978 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:11:57,978 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482470143] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:11:57,978 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:11:57,978 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2022-02-10 23:11:57,978 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665707415] [2022-02-10 23:11:57,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:11:57,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 23:11:57,979 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:11:57,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 23:11:57,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2022-02-10 23:11:57,979 INFO L87 Difference]: Start difference. First operand 4979 states and 14622 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:58,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:11:58,668 INFO L93 Difference]: Finished difference Result 7145 states and 20765 transitions. [2022-02-10 23:11:58,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-10 23:11:58,669 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-02-10 23:11:58,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:11:58,682 INFO L225 Difference]: With dead ends: 7145 [2022-02-10 23:11:58,682 INFO L226 Difference]: Without dead ends: 7070 [2022-02-10 23:11:58,683 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 131 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 555 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=491, Invalid=1959, Unknown=0, NotChecked=0, Total=2450 [2022-02-10 23:11:58,683 INFO L934 BasicCegarLoop]: 113 mSDtfsCounter, 391 mSDsluCounter, 991 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 1053 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 23:11:58,684 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [391 Valid, 1053 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 23:11:58,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7070 states. [2022-02-10 23:11:58,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7070 to 5203. [2022-02-10 23:11:58,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5203 states, 5202 states have (on average 2.9400230680507495) internal successors, (15294), 5202 states have internal predecessors, (15294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:58,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5203 states to 5203 states and 15294 transitions. [2022-02-10 23:11:58,768 INFO L78 Accepts]: Start accepts. Automaton has 5203 states and 15294 transitions. Word has length 71 [2022-02-10 23:11:58,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:11:58,768 INFO L470 AbstractCegarLoop]: Abstraction has 5203 states and 15294 transitions. [2022-02-10 23:11:58,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:58,769 INFO L276 IsEmpty]: Start isEmpty. Operand 5203 states and 15294 transitions. [2022-02-10 23:11:58,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-02-10 23:11:58,778 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:11:58,778 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:11:58,794 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-02-10 23:11:58,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:11:58,978 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:11:58,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:11:58,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1262000235, now seen corresponding path program 21 times [2022-02-10 23:11:58,979 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:11:58,979 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626806887] [2022-02-10 23:11:58,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:11:58,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:11:58,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:11:59,039 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:11:59,039 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:11:59,039 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626806887] [2022-02-10 23:11:59,039 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626806887] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:11:59,040 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100563844] [2022-02-10 23:11:59,040 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 23:11:59,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:11:59,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:11:59,041 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:11:59,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-02-10 23:11:59,102 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-10 23:11:59,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:11:59,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-10 23:11:59,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:11:59,352 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:11:59,352 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-10 23:11:59,353 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100563844] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 23:11:59,353 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-10 23:11:59,353 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [9] total 19 [2022-02-10 23:11:59,353 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62112546] [2022-02-10 23:11:59,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 23:11:59,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-10 23:11:59,353 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:11:59,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-10 23:11:59,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2022-02-10 23:11:59,354 INFO L87 Difference]: Start difference. First operand 5203 states and 15294 transitions. Second operand has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:59,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:11:59,499 INFO L93 Difference]: Finished difference Result 5353 states and 15640 transitions. [2022-02-10 23:11:59,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-10 23:11:59,500 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2022-02-10 23:11:59,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:11:59,508 INFO L225 Difference]: With dead ends: 5353 [2022-02-10 23:11:59,508 INFO L226 Difference]: Without dead ends: 5134 [2022-02-10 23:11:59,508 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=104, Invalid=496, Unknown=0, NotChecked=0, Total=600 [2022-02-10 23:11:59,508 INFO L934 BasicCegarLoop]: 102 mSDtfsCounter, 150 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 820 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:11:59,509 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 820 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:11:59,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5134 states. [2022-02-10 23:11:59,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5134 to 4235. [2022-02-10 23:11:59,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4235 states, 4234 states have (on average 2.8096362777515353) internal successors, (11896), 4234 states have internal predecessors, (11896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:59,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4235 states to 4235 states and 11896 transitions. [2022-02-10 23:11:59,582 INFO L78 Accepts]: Start accepts. Automaton has 4235 states and 11896 transitions. Word has length 71 [2022-02-10 23:11:59,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:11:59,582 INFO L470 AbstractCegarLoop]: Abstraction has 4235 states and 11896 transitions. [2022-02-10 23:11:59,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:59,582 INFO L276 IsEmpty]: Start isEmpty. Operand 4235 states and 11896 transitions. [2022-02-10 23:11:59,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-02-10 23:11:59,588 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:11:59,588 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:11:59,605 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-02-10 23:11:59,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-02-10 23:11:59,803 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:11:59,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:11:59,804 INFO L85 PathProgramCache]: Analyzing trace with hash 986982895, now seen corresponding path program 22 times [2022-02-10 23:11:59,804 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:11:59,804 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301975110] [2022-02-10 23:11:59,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:11:59,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:11:59,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:11:59,859 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:11:59,859 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:11:59,859 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301975110] [2022-02-10 23:11:59,859 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301975110] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:11:59,859 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979061246] [2022-02-10 23:11:59,859 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 23:11:59,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:11:59,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:11:59,861 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:11:59,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-02-10 23:11:59,908 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 23:11:59,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:11:59,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 15 conjunts are in the unsatisfiable core [2022-02-10 23:11:59,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:12:00,111 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:12:00,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:12:00,302 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:12:00,303 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [979061246] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:12:00,303 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:12:00,303 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 23 [2022-02-10 23:12:00,303 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956573723] [2022-02-10 23:12:00,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:12:00,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-10 23:12:00,303 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:12:00,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-10 23:12:00,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2022-02-10 23:12:00,304 INFO L87 Difference]: Start difference. First operand 4235 states and 11896 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:12:00,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:12:00,741 INFO L93 Difference]: Finished difference Result 5625 states and 15658 transitions. [2022-02-10 23:12:00,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-10 23:12:00,741 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 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 71 [2022-02-10 23:12:00,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:12:00,750 INFO L225 Difference]: With dead ends: 5625 [2022-02-10 23:12:00,750 INFO L226 Difference]: Without dead ends: 5595 [2022-02-10 23:12:00,750 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=404, Invalid=1402, Unknown=0, NotChecked=0, Total=1806 [2022-02-10 23:12:00,751 INFO L934 BasicCegarLoop]: 121 mSDtfsCounter, 331 mSDsluCounter, 1027 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 1081 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 23:12:00,751 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 1081 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 23:12:00,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5595 states. [2022-02-10 23:12:00,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5595 to 4387. [2022-02-10 23:12:00,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4387 states, 4386 states have (on average 2.8075695394436844) internal successors, (12314), 4386 states have internal predecessors, (12314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:12:00,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4387 states to 4387 states and 12314 transitions. [2022-02-10 23:12:00,836 INFO L78 Accepts]: Start accepts. Automaton has 4387 states and 12314 transitions. Word has length 71 [2022-02-10 23:12:00,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:12:00,836 INFO L470 AbstractCegarLoop]: Abstraction has 4387 states and 12314 transitions. [2022-02-10 23:12:00,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:12:00,836 INFO L276 IsEmpty]: Start isEmpty. Operand 4387 states and 12314 transitions. [2022-02-10 23:12:00,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-02-10 23:12:00,841 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:12:00,841 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:12:00,858 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-02-10 23:12:01,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-02-10 23:12:01,057 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:12:01,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:12:01,058 INFO L85 PathProgramCache]: Analyzing trace with hash 2079147621, now seen corresponding path program 23 times [2022-02-10 23:12:01,058 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:12:01,058 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902842692] [2022-02-10 23:12:01,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:12:01,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:12:01,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:12:01,119 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:12:01,120 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:12:01,120 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902842692] [2022-02-10 23:12:01,120 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902842692] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:12:01,120 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71623983] [2022-02-10 23:12:01,120 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 23:12:01,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:12:01,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:12:01,121 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:12:01,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-02-10 23:12:01,174 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:12:01,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:12:01,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-10 23:12:01,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:12:01,392 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:12:01,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:12:01,582 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:12:01,583 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71623983] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:12:01,583 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:12:01,583 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2022-02-10 23:12:01,583 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080278339] [2022-02-10 23:12:01,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:12:01,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-10 23:12:01,583 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:12:01,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-10 23:12:01,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2022-02-10 23:12:01,584 INFO L87 Difference]: Start difference. First operand 4387 states and 12314 transitions. Second operand has 23 states, 23 states have (on average 4.869565217391305) internal successors, (112), 23 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:12:02,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:12:02,235 INFO L93 Difference]: Finished difference Result 5675 states and 15793 transitions. [2022-02-10 23:12:02,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-02-10 23:12:02,235 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.869565217391305) internal successors, (112), 23 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-02-10 23:12:02,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:12:02,244 INFO L225 Difference]: With dead ends: 5675 [2022-02-10 23:12:02,244 INFO L226 Difference]: Without dead ends: 5630 [2022-02-10 23:12:02,245 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 557 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=554, Invalid=1896, Unknown=0, NotChecked=0, Total=2450 [2022-02-10 23:12:02,245 INFO L934 BasicCegarLoop]: 108 mSDtfsCounter, 509 mSDsluCounter, 984 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 1026 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 23:12:02,245 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [509 Valid, 1026 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 23:12:02,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5630 states. [2022-02-10 23:12:02,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5630 to 4603. [2022-02-10 23:12:02,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4603 states, 4602 states have (on average 2.809213385484572) internal successors, (12928), 4602 states have internal predecessors, (12928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:12:02,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4603 states to 4603 states and 12928 transitions. [2022-02-10 23:12:02,357 INFO L78 Accepts]: Start accepts. Automaton has 4603 states and 12928 transitions. Word has length 71 [2022-02-10 23:12:02,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:12:02,358 INFO L470 AbstractCegarLoop]: Abstraction has 4603 states and 12928 transitions. [2022-02-10 23:12:02,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.869565217391305) internal successors, (112), 23 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:12:02,358 INFO L276 IsEmpty]: Start isEmpty. Operand 4603 states and 12928 transitions. [2022-02-10 23:12:02,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-02-10 23:12:02,366 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:12:02,366 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:12:02,382 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-02-10 23:12:02,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-02-10 23:12:02,567 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:12:02,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:12:02,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1830001351, now seen corresponding path program 24 times [2022-02-10 23:12:02,568 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:12:02,568 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143052880] [2022-02-10 23:12:02,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:12:02,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:12:02,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:12:02,651 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:12:02,652 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:12:02,652 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143052880] [2022-02-10 23:12:02,652 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143052880] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:12:02,652 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769028473] [2022-02-10 23:12:02,652 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 23:12:02,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:12:02,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:12:02,653 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:12:02,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-02-10 23:12:02,710 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-10 23:12:02,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:12:02,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-10 23:12:02,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:12:02,919 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:12:02,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:12:03,117 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:12:03,117 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769028473] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:12:03,117 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:12:03,117 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2022-02-10 23:12:03,118 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274056077] [2022-02-10 23:12:03,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:12:03,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 23:12:03,118 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:12:03,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 23:12:03,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2022-02-10 23:12:03,118 INFO L87 Difference]: Start difference. First operand 4603 states and 12928 transitions. Second operand has 21 states, 21 states have (on average 5.142857142857143) internal successors, (108), 21 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:12:03,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:12:03,518 INFO L93 Difference]: Finished difference Result 6110 states and 17105 transitions. [2022-02-10 23:12:03,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-10 23:12:03,519 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.142857142857143) internal successors, (108), 21 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-02-10 23:12:03,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:12:03,528 INFO L225 Difference]: With dead ends: 6110 [2022-02-10 23:12:03,528 INFO L226 Difference]: Without dead ends: 6035 [2022-02-10 23:12:03,528 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 131 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=312, Invalid=1170, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 23:12:03,529 INFO L934 BasicCegarLoop]: 92 mSDtfsCounter, 294 mSDsluCounter, 861 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 907 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:12:03,529 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [294 Valid, 907 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:12:03,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6035 states. [2022-02-10 23:12:03,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6035 to 4815. [2022-02-10 23:12:03,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4815 states, 4814 states have (on average 2.8066057332779395) internal successors, (13511), 4814 states have internal predecessors, (13511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:12:03,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4815 states to 4815 states and 13511 transitions. [2022-02-10 23:12:03,608 INFO L78 Accepts]: Start accepts. Automaton has 4815 states and 13511 transitions. Word has length 71 [2022-02-10 23:12:03,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:12:03,608 INFO L470 AbstractCegarLoop]: Abstraction has 4815 states and 13511 transitions. [2022-02-10 23:12:03,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.142857142857143) internal successors, (108), 21 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:12:03,608 INFO L276 IsEmpty]: Start isEmpty. Operand 4815 states and 13511 transitions. [2022-02-10 23:12:03,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-02-10 23:12:03,615 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:12:03,615 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:12:03,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-02-10 23:12:03,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:12:03,831 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:12:03,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:12:03,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1147399623, now seen corresponding path program 25 times [2022-02-10 23:12:03,832 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:12:03,832 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109747449] [2022-02-10 23:12:03,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:12:03,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:12:03,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:12:03,882 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:12:03,882 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:12:03,882 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109747449] [2022-02-10 23:12:03,882 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109747449] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:12:03,883 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814149948] [2022-02-10 23:12:03,883 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 23:12:03,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:12:03,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:12:03,884 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:12:03,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-02-10 23:12:03,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:12:03,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-10 23:12:03,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:12:04,148 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:12:04,148 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:12:04,360 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:12:04,360 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814149948] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:12:04,361 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:12:04,361 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 23 [2022-02-10 23:12:04,361 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148322598] [2022-02-10 23:12:04,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:12:04,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-10 23:12:04,361 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:12:04,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-10 23:12:04,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2022-02-10 23:12:04,362 INFO L87 Difference]: Start difference. First operand 4815 states and 13511 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:12:05,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:12:05,047 INFO L93 Difference]: Finished difference Result 6706 states and 18678 transitions. [2022-02-10 23:12:05,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-02-10 23:12:05,047 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 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 71 [2022-02-10 23:12:05,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:12:05,057 INFO L225 Difference]: With dead ends: 6706 [2022-02-10 23:12:05,057 INFO L226 Difference]: Without dead ends: 6661 [2022-02-10 23:12:05,058 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 784 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=709, Invalid=2597, Unknown=0, NotChecked=0, Total=3306 [2022-02-10 23:12:05,058 INFO L934 BasicCegarLoop]: 103 mSDtfsCounter, 719 mSDsluCounter, 1063 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 1104 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 23:12:05,059 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [719 Valid, 1104 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 23:12:05,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6661 states. [2022-02-10 23:12:05,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6661 to 5051. [2022-02-10 23:12:05,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5051 states, 5050 states have (on average 2.8047524752475246) internal successors, (14164), 5050 states have internal predecessors, (14164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:12:05,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5051 states to 5051 states and 14164 transitions. [2022-02-10 23:12:05,133 INFO L78 Accepts]: Start accepts. Automaton has 5051 states and 14164 transitions. Word has length 71 [2022-02-10 23:12:05,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:12:05,133 INFO L470 AbstractCegarLoop]: Abstraction has 5051 states and 14164 transitions. [2022-02-10 23:12:05,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:12:05,133 INFO L276 IsEmpty]: Start isEmpty. Operand 5051 states and 14164 transitions. [2022-02-10 23:12:05,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-02-10 23:12:05,140 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:12:05,140 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:12:05,157 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-02-10 23:12:05,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:12:05,350 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:12:05,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:12:05,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1375488781, now seen corresponding path program 26 times [2022-02-10 23:12:05,350 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:12:05,350 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402145619] [2022-02-10 23:12:05,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:12:05,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:12:05,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:12:05,419 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:12:05,419 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:12:05,419 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402145619] [2022-02-10 23:12:05,420 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402145619] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:12:05,420 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640280928] [2022-02-10 23:12:05,420 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 23:12:05,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:12:05,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:12:05,421 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:12:05,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-02-10 23:12:05,472 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:12:05,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:12:05,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-10 23:12:05,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:12:05,671 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:12:05,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:12:05,884 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:12:05,884 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640280928] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:12:05,884 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:12:05,885 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2022-02-10 23:12:05,885 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207025618] [2022-02-10 23:12:05,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:12:05,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-10 23:12:05,885 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:12:05,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-10 23:12:05,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506 [2022-02-10 23:12:05,886 INFO L87 Difference]: Start difference. First operand 5051 states and 14164 transitions. Second operand has 23 states, 23 states have (on average 4.869565217391305) internal successors, (112), 23 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:12:06,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:12:06,438 INFO L93 Difference]: Finished difference Result 7248 states and 20072 transitions. [2022-02-10 23:12:06,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-10 23:12:06,439 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.869565217391305) internal successors, (112), 23 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-02-10 23:12:06,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:12:06,450 INFO L225 Difference]: With dead ends: 7248 [2022-02-10 23:12:06,450 INFO L226 Difference]: Without dead ends: 7218 [2022-02-10 23:12:06,451 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 661 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=581, Invalid=2175, Unknown=0, NotChecked=0, Total=2756 [2022-02-10 23:12:06,451 INFO L934 BasicCegarLoop]: 108 mSDtfsCounter, 773 mSDsluCounter, 909 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 773 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 23:12:06,451 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [773 Valid, 944 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 23:12:06,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7218 states. [2022-02-10 23:12:06,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7218 to 5391. [2022-02-10 23:12:06,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5391 states, 5390 states have (on average 2.811688311688312) internal successors, (15155), 5390 states have internal predecessors, (15155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:12:06,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5391 states to 5391 states and 15155 transitions. [2022-02-10 23:12:06,532 INFO L78 Accepts]: Start accepts. Automaton has 5391 states and 15155 transitions. Word has length 71 [2022-02-10 23:12:06,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:12:06,532 INFO L470 AbstractCegarLoop]: Abstraction has 5391 states and 15155 transitions. [2022-02-10 23:12:06,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.869565217391305) internal successors, (112), 23 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:12:06,532 INFO L276 IsEmpty]: Start isEmpty. Operand 5391 states and 15155 transitions. [2022-02-10 23:12:06,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-02-10 23:12:06,539 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:12:06,539 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:12:06,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-02-10 23:12:06,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-02-10 23:12:06,755 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:12:06,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:12:06,756 INFO L85 PathProgramCache]: Analyzing trace with hash -857727561, now seen corresponding path program 27 times [2022-02-10 23:12:06,756 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:12:06,756 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435252435] [2022-02-10 23:12:06,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:12:06,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:12:06,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:12:06,811 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:12:06,811 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:12:06,811 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435252435] [2022-02-10 23:12:06,811 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435252435] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:12:06,811 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447804508] [2022-02-10 23:12:06,811 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 23:12:06,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:12:06,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:12:06,812 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:12:06,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-02-10 23:12:06,865 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-10 23:12:06,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:12:06,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-10 23:12:06,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:12:07,101 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:12:07,101 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:12:07,361 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:12:07,361 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447804508] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:12:07,361 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:12:07,361 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 12] total 26 [2022-02-10 23:12:07,361 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520880389] [2022-02-10 23:12:07,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:12:07,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-10 23:12:07,362 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:12:07,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-10 23:12:07,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=554, Unknown=0, NotChecked=0, Total=650 [2022-02-10 23:12:07,362 INFO L87 Difference]: Start difference. First operand 5391 states and 15155 transitions. Second operand has 26 states, 26 states have (on average 5.346153846153846) internal successors, (139), 26 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:12:08,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:12:08,327 INFO L93 Difference]: Finished difference Result 9102 states and 25605 transitions. [2022-02-10 23:12:08,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-02-10 23:12:08,327 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.346153846153846) internal successors, (139), 26 states have internal predecessors, (139), 0 states have call successors, (0), 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 71 [2022-02-10 23:12:08,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:12:08,341 INFO L225 Difference]: With dead ends: 9102 [2022-02-10 23:12:08,341 INFO L226 Difference]: Without dead ends: 8985 [2022-02-10 23:12:08,342 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1254 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1071, Invalid=4185, Unknown=0, NotChecked=0, Total=5256 [2022-02-10 23:12:08,342 INFO L934 BasicCegarLoop]: 143 mSDtfsCounter, 451 mSDsluCounter, 2011 mSDsCounter, 0 mSdLazyCounter, 1029 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 2025 SdHoareTripleChecker+Invalid, 1116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 23:12:08,343 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [451 Valid, 2025 Invalid, 1116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1029 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 23:12:08,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8985 states. [2022-02-10 23:12:08,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8985 to 6059. [2022-02-10 23:12:08,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6059 states, 6058 states have (on average 2.8081875206338727) internal successors, (17012), 6058 states have internal predecessors, (17012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:12:08,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6059 states to 6059 states and 17012 transitions. [2022-02-10 23:12:08,432 INFO L78 Accepts]: Start accepts. Automaton has 6059 states and 17012 transitions. Word has length 71 [2022-02-10 23:12:08,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:12:08,432 INFO L470 AbstractCegarLoop]: Abstraction has 6059 states and 17012 transitions. [2022-02-10 23:12:08,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.346153846153846) internal successors, (139), 26 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:12:08,432 INFO L276 IsEmpty]: Start isEmpty. Operand 6059 states and 17012 transitions. [2022-02-10 23:12:08,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-10 23:12:08,439 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:12:08,439 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:12:08,455 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2022-02-10 23:12:08,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-02-10 23:12:08,640 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:12:08,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:12:08,640 INFO L85 PathProgramCache]: Analyzing trace with hash -200147572, now seen corresponding path program 28 times [2022-02-10 23:12:08,640 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:12:08,640 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532474979] [2022-02-10 23:12:08,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:12:08,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:12:08,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:12:08,730 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 23:12:08,730 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:12:08,730 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532474979] [2022-02-10 23:12:08,730 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532474979] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:12:08,730 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036844973] [2022-02-10 23:12:08,730 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 23:12:08,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:12:08,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:12:08,732 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:12:08,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-02-10 23:12:08,785 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 23:12:08,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:12:08,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 23:12:08,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:12:09,142 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:12:09,143 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:12:09,468 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:12:09,468 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036844973] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:12:09,469 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:12:09,469 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 13] total 31 [2022-02-10 23:12:09,469 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682032459] [2022-02-10 23:12:09,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:12:09,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-10 23:12:09,469 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:12:09,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-10 23:12:09,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=839, Unknown=0, NotChecked=0, Total=930 [2022-02-10 23:12:09,470 INFO L87 Difference]: Start difference. First operand 6059 states and 17012 transitions. Second operand has 31 states, 31 states have (on average 5.258064516129032) internal successors, (163), 31 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:12:12,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:12:12,275 INFO L93 Difference]: Finished difference Result 9206 states and 25661 transitions. [2022-02-10 23:12:12,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-02-10 23:12:12,276 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.258064516129032) internal successors, (163), 31 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-02-10 23:12:12,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:12:12,289 INFO L225 Difference]: With dead ends: 9206 [2022-02-10 23:12:12,289 INFO L226 Difference]: Without dead ends: 9125 [2022-02-10 23:12:12,290 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 209 SyntacticMatches, 1 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4962 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2504, Invalid=14266, Unknown=0, NotChecked=0, Total=16770 [2022-02-10 23:12:12,291 INFO L934 BasicCegarLoop]: 249 mSDtfsCounter, 1132 mSDsluCounter, 3759 mSDsCounter, 0 mSdLazyCounter, 1922 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1132 SdHoareTripleChecker+Valid, 3759 SdHoareTripleChecker+Invalid, 2031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 23:12:12,291 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1132 Valid, 3759 Invalid, 2031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1922 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-10 23:12:12,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9125 states. [2022-02-10 23:12:12,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9125 to 4151. [2022-02-10 23:12:12,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4151 states, 4150 states have (on average 2.7672289156626504) internal successors, (11484), 4150 states have internal predecessors, (11484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:12:12,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4151 states to 4151 states and 11484 transitions. [2022-02-10 23:12:12,369 INFO L78 Accepts]: Start accepts. Automaton has 4151 states and 11484 transitions. Word has length 75 [2022-02-10 23:12:12,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:12:12,370 INFO L470 AbstractCegarLoop]: Abstraction has 4151 states and 11484 transitions. [2022-02-10 23:12:12,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.258064516129032) internal successors, (163), 31 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:12:12,370 INFO L276 IsEmpty]: Start isEmpty. Operand 4151 states and 11484 transitions. [2022-02-10 23:12:12,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-10 23:12:12,374 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:12:12,374 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:12:12,390 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-02-10 23:12:12,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:12:12,575 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:12:12,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:12:12,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1273828684, now seen corresponding path program 29 times [2022-02-10 23:12:12,576 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:12:12,576 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132995010] [2022-02-10 23:12:12,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:12:12,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:12:12,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:12:12,664 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 23:12:12,664 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:12:12,664 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132995010] [2022-02-10 23:12:12,664 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132995010] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:12:12,664 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595360260] [2022-02-10 23:12:12,664 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 23:12:12,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:12:12,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:12:12,680 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:12:12,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-02-10 23:12:12,744 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 23:12:12,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:12:12,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 23:12:12,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:12:13,067 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:12:13,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:12:13,358 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:12:13,359 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595360260] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:12:13,359 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:12:13,359 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 13] total 31 [2022-02-10 23:12:13,359 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119432431] [2022-02-10 23:12:13,359 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:12:13,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-10 23:12:13,359 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:12:13,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-10 23:12:13,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=844, Unknown=0, NotChecked=0, Total=930 [2022-02-10 23:12:13,360 INFO L87 Difference]: Start difference. First operand 4151 states and 11484 transitions. Second operand has 31 states, 31 states have (on average 5.258064516129032) internal successors, (163), 31 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:12:16,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:12:16,202 INFO L93 Difference]: Finished difference Result 7678 states and 21127 transitions. [2022-02-10 23:12:16,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2022-02-10 23:12:16,202 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.258064516129032) internal successors, (163), 31 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-02-10 23:12:16,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:12:16,215 INFO L225 Difference]: With dead ends: 7678 [2022-02-10 23:12:16,215 INFO L226 Difference]: Without dead ends: 7582 [2022-02-10 23:12:16,216 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 201 SyntacticMatches, 1 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5366 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2074, Invalid=15482, Unknown=0, NotChecked=0, Total=17556 [2022-02-10 23:12:16,217 INFO L934 BasicCegarLoop]: 206 mSDtfsCounter, 779 mSDsluCounter, 3710 mSDsCounter, 0 mSdLazyCounter, 1915 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 3675 SdHoareTripleChecker+Invalid, 2047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 1915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 23:12:16,217 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [779 Valid, 3675 Invalid, 2047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 1915 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 23:12:16,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7582 states. [2022-02-10 23:12:16,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7582 to 4999. [2022-02-10 23:12:16,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4999 states, 4998 states have (on average 2.7979191676670667) internal successors, (13984), 4998 states have internal predecessors, (13984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:12:16,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4999 states to 4999 states and 13984 transitions. [2022-02-10 23:12:16,306 INFO L78 Accepts]: Start accepts. Automaton has 4999 states and 13984 transitions. Word has length 75 [2022-02-10 23:12:16,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:12:16,306 INFO L470 AbstractCegarLoop]: Abstraction has 4999 states and 13984 transitions. [2022-02-10 23:12:16,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.258064516129032) internal successors, (163), 31 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:12:16,306 INFO L276 IsEmpty]: Start isEmpty. Operand 4999 states and 13984 transitions. [2022-02-10 23:12:16,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-10 23:12:16,312 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:12:16,312 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:12:16,328 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-02-10 23:12:16,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:12:16,514 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:12:16,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:12:16,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1884818372, now seen corresponding path program 30 times [2022-02-10 23:12:16,515 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:12:16,515 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456195584] [2022-02-10 23:12:16,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:12:16,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:12:16,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:12:16,675 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:12:16,675 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:12:16,675 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456195584] [2022-02-10 23:12:16,676 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456195584] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:12:16,676 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800606628] [2022-02-10 23:12:16,676 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 23:12:16,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:12:16,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:12:16,677 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:12:16,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-02-10 23:12:16,737 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-10 23:12:16,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:12:16,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 23:12:16,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:12:17,081 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:12:17,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:12:17,396 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:12:17,396 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800606628] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:12:17,396 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:12:17,397 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 13] total 33 [2022-02-10 23:12:17,397 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708961753] [2022-02-10 23:12:17,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:12:17,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-10 23:12:17,397 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:12:17,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-10 23:12:17,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=951, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 23:12:17,398 INFO L87 Difference]: Start difference. First operand 4999 states and 13984 transitions. Second operand has 33 states, 33 states have (on average 4.848484848484849) internal successors, (160), 33 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:12:21,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:12:21,257 INFO L93 Difference]: Finished difference Result 12901 states and 35852 transitions. [2022-02-10 23:12:21,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2022-02-10 23:12:21,257 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.848484848484849) internal successors, (160), 33 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-02-10 23:12:21,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:12:21,281 INFO L225 Difference]: With dead ends: 12901 [2022-02-10 23:12:21,281 INFO L226 Difference]: Without dead ends: 12766 [2022-02-10 23:12:21,282 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 212 SyntacticMatches, 1 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6161 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2577, Invalid=16055, Unknown=0, NotChecked=0, Total=18632 [2022-02-10 23:12:21,283 INFO L934 BasicCegarLoop]: 286 mSDtfsCounter, 1575 mSDsluCounter, 4309 mSDsCounter, 0 mSdLazyCounter, 2365 mSolverCounterSat, 284 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1575 SdHoareTripleChecker+Valid, 4252 SdHoareTripleChecker+Invalid, 2649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 284 IncrementalHoareTripleChecker+Valid, 2365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-10 23:12:21,283 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1575 Valid, 4252 Invalid, 2649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [284 Valid, 2365 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-10 23:12:21,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12766 states. [2022-02-10 23:12:21,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12766 to 6975. [2022-02-10 23:12:21,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6975 states, 6974 states have (on average 2.810725552050473) internal successors, (19602), 6974 states have internal predecessors, (19602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:12:21,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6975 states to 6975 states and 19602 transitions. [2022-02-10 23:12:21,453 INFO L78 Accepts]: Start accepts. Automaton has 6975 states and 19602 transitions. Word has length 75 [2022-02-10 23:12:21,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:12:21,453 INFO L470 AbstractCegarLoop]: Abstraction has 6975 states and 19602 transitions. [2022-02-10 23:12:21,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.848484848484849) internal successors, (160), 33 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:12:21,453 INFO L276 IsEmpty]: Start isEmpty. Operand 6975 states and 19602 transitions. [2022-02-10 23:12:21,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-10 23:12:21,463 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:12:21,463 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:12:21,481 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-02-10 23:12:21,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:12:21,668 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:12:21,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:12:21,669 INFO L85 PathProgramCache]: Analyzing trace with hash -56449050, now seen corresponding path program 31 times [2022-02-10 23:12:21,669 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:12:21,669 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117749366] [2022-02-10 23:12:21,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:12:21,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:12:21,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:12:21,746 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:12:21,746 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:12:21,746 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117749366] [2022-02-10 23:12:21,746 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117749366] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:12:21,746 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512456759] [2022-02-10 23:12:21,746 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 23:12:21,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:12:21,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:12:21,747 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:12:21,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-02-10 23:12:21,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:12:21,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 23:12:21,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:12:22,141 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:12:22,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:12:22,357 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:12:22,358 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512456759] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:12:22,358 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:12:22,358 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 13] total 31 [2022-02-10 23:12:22,358 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077238998] [2022-02-10 23:12:22,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:12:22,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-10 23:12:22,358 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:12:22,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-10 23:12:22,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=842, Unknown=0, NotChecked=0, Total=930 [2022-02-10 23:12:22,359 INFO L87 Difference]: Start difference. First operand 6975 states and 19602 transitions. Second operand has 31 states, 31 states have (on average 5.258064516129032) internal successors, (163), 31 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:12:25,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:12:25,949 INFO L93 Difference]: Finished difference Result 11417 states and 32014 transitions. [2022-02-10 23:12:25,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2022-02-10 23:12:25,949 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.258064516129032) internal successors, (163), 31 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-02-10 23:12:25,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:12:25,965 INFO L225 Difference]: With dead ends: 11417 [2022-02-10 23:12:25,965 INFO L226 Difference]: Without dead ends: 11321 [2022-02-10 23:12:25,966 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 246 SyntacticMatches, 2 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9203 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=3354, Invalid=24036, Unknown=0, NotChecked=0, Total=27390 [2022-02-10 23:12:25,966 INFO L934 BasicCegarLoop]: 266 mSDtfsCounter, 949 mSDsluCounter, 4193 mSDsCounter, 0 mSdLazyCounter, 2253 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 949 SdHoareTripleChecker+Valid, 4220 SdHoareTripleChecker+Invalid, 2392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 2253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 23:12:25,966 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [949 Valid, 4220 Invalid, 2392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 2253 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-10 23:12:25,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11321 states. [2022-02-10 23:12:26,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11321 to 6382. [2022-02-10 23:12:26,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6382 states, 6381 states have (on average 2.8111581256856293) internal successors, (17938), 6381 states have internal predecessors, (17938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:12:26,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6382 states to 6382 states and 17938 transitions. [2022-02-10 23:12:26,082 INFO L78 Accepts]: Start accepts. Automaton has 6382 states and 17938 transitions. Word has length 75 [2022-02-10 23:12:26,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:12:26,083 INFO L470 AbstractCegarLoop]: Abstraction has 6382 states and 17938 transitions. [2022-02-10 23:12:26,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.258064516129032) internal successors, (163), 31 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:12:26,083 INFO L276 IsEmpty]: Start isEmpty. Operand 6382 states and 17938 transitions. [2022-02-10 23:12:26,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-10 23:12:26,091 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:12:26,091 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:12:26,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-02-10 23:12:26,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-02-10 23:12:26,307 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:12:26,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:12:26,307 INFO L85 PathProgramCache]: Analyzing trace with hash -94636020, now seen corresponding path program 32 times [2022-02-10 23:12:26,307 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:12:26,308 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843218310] [2022-02-10 23:12:26,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:12:26,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:12:26,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:12:26,390 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:12:26,391 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:12:26,391 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843218310] [2022-02-10 23:12:26,391 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843218310] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:12:26,391 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361720377] [2022-02-10 23:12:26,391 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 23:12:26,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:12:26,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:12:26,392 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:12:26,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-02-10 23:12:26,458 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:12:26,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:12:26,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 23:12:26,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:12:26,765 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:12:26,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:12:27,046 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-10 23:12:27,047 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361720377] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:12:27,047 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:12:27,047 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 12] total 30 [2022-02-10 23:12:27,047 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517100279] [2022-02-10 23:12:27,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:12:27,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-10 23:12:27,047 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:12:27,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-10 23:12:27,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=785, Unknown=0, NotChecked=0, Total=870 [2022-02-10 23:12:27,048 INFO L87 Difference]: Start difference. First operand 6382 states and 17938 transitions. Second operand has 30 states, 30 states have (on average 5.266666666666667) internal successors, (158), 30 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:12:29,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:12:29,177 INFO L93 Difference]: Finished difference Result 9969 states and 27696 transitions. [2022-02-10 23:12:29,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-02-10 23:12:29,178 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.266666666666667) internal successors, (158), 30 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-02-10 23:12:29,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:12:29,196 INFO L225 Difference]: With dead ends: 9969 [2022-02-10 23:12:29,196 INFO L226 Difference]: Without dead ends: 9834 [2022-02-10 23:12:29,198 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 199 SyntacticMatches, 1 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3335 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1560, Invalid=10212, Unknown=0, NotChecked=0, Total=11772 [2022-02-10 23:12:29,198 INFO L934 BasicCegarLoop]: 169 mSDtfsCounter, 678 mSDsluCounter, 2720 mSDsCounter, 0 mSdLazyCounter, 1443 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 2738 SdHoareTripleChecker+Invalid, 1550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 23:12:29,198 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [678 Valid, 2738 Invalid, 1550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1443 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 23:12:29,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9834 states. [2022-02-10 23:12:29,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9834 to 6802. [2022-02-10 23:12:29,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6802 states, 6801 states have (on average 2.809733862667255) internal successors, (19109), 6801 states have internal predecessors, (19109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:12:29,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6802 states to 6802 states and 19109 transitions. [2022-02-10 23:12:29,361 INFO L78 Accepts]: Start accepts. Automaton has 6802 states and 19109 transitions. Word has length 75 [2022-02-10 23:12:29,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:12:29,361 INFO L470 AbstractCegarLoop]: Abstraction has 6802 states and 19109 transitions. [2022-02-10 23:12:29,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 5.266666666666667) internal successors, (158), 30 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:12:29,361 INFO L276 IsEmpty]: Start isEmpty. Operand 6802 states and 19109 transitions. [2022-02-10 23:12:29,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-10 23:12:29,371 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:12:29,371 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:12:29,395 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2022-02-10 23:12:29,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-02-10 23:12:29,572 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:12:29,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:12:29,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1124573010, now seen corresponding path program 33 times [2022-02-10 23:12:29,572 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:12:29,572 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002373661] [2022-02-10 23:12:29,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:12:29,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:12:29,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:12:29,656 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:12:29,656 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:12:29,656 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002373661] [2022-02-10 23:12:29,656 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002373661] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:12:29,656 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108494068] [2022-02-10 23:12:29,656 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 23:12:29,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:12:29,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:12:29,657 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:12:29,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-02-10 23:12:29,727 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 23:12:29,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:12:29,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-10 23:12:29,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:12:29,946 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:12:29,946 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:12:30,184 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:12:30,184 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108494068] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:12:30,184 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:12:30,184 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 20 [2022-02-10 23:12:30,184 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171876040] [2022-02-10 23:12:30,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:12:30,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 23:12:30,185 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:12:30,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 23:12:30,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2022-02-10 23:12:30,186 INFO L87 Difference]: Start difference. First operand 6802 states and 19109 transitions. Second operand has 20 states, 20 states have (on average 5.3) internal successors, (106), 20 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:12:30,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:12:30,591 INFO L93 Difference]: Finished difference Result 9433 states and 26308 transitions. [2022-02-10 23:12:30,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-10 23:12:30,592 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.3) internal successors, (106), 20 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-02-10 23:12:30,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:12:30,613 INFO L225 Difference]: With dead ends: 9433 [2022-02-10 23:12:30,613 INFO L226 Difference]: Without dead ends: 9346 [2022-02-10 23:12:30,613 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 150 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=232, Invalid=1100, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 23:12:30,614 INFO L934 BasicCegarLoop]: 116 mSDtfsCounter, 207 mSDsluCounter, 1290 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 1321 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 23:12:30,614 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [207 Valid, 1321 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 23:12:30,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9346 states. [2022-02-10 23:12:30,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9346 to 6070. [2022-02-10 23:12:30,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6070 states, 6069 states have (on average 2.8149612786290987) internal successors, (17084), 6069 states have internal predecessors, (17084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:12:30,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6070 states to 6070 states and 17084 transitions. [2022-02-10 23:12:30,764 INFO L78 Accepts]: Start accepts. Automaton has 6070 states and 17084 transitions. Word has length 75 [2022-02-10 23:12:30,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:12:30,764 INFO L470 AbstractCegarLoop]: Abstraction has 6070 states and 17084 transitions. [2022-02-10 23:12:30,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.3) internal successors, (106), 20 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:12:30,764 INFO L276 IsEmpty]: Start isEmpty. Operand 6070 states and 17084 transitions. [2022-02-10 23:12:30,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-10 23:12:30,772 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:12:30,772 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:12:30,794 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2022-02-10 23:12:30,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-02-10 23:12:30,973 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:12:30,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:12:30,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1452622918, now seen corresponding path program 34 times [2022-02-10 23:12:30,973 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:12:30,973 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864330205] [2022-02-10 23:12:30,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:12:30,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:12:30,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:12:31,080 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:12:31,080 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:12:31,081 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864330205] [2022-02-10 23:12:31,081 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864330205] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:12:31,081 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9617273] [2022-02-10 23:12:31,081 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 23:12:31,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:12:31,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:12:31,092 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:12:31,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-02-10 23:12:31,153 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 23:12:31,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:12:31,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 23:12:31,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:12:31,490 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:12:31,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:12:31,812 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 23:12:31,812 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [9617273] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:12:31,812 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:12:31,812 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 13] total 31 [2022-02-10 23:12:31,813 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138076622] [2022-02-10 23:12:31,813 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:12:31,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-10 23:12:31,813 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:12:31,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-10 23:12:31,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=842, Unknown=0, NotChecked=0, Total=930 [2022-02-10 23:12:31,814 INFO L87 Difference]: Start difference. First operand 6070 states and 17084 transitions. Second operand has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:12:35,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:12:35,394 INFO L93 Difference]: Finished difference Result 9376 states and 26076 transitions. [2022-02-10 23:12:35,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2022-02-10 23:12:35,395 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-02-10 23:12:35,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:12:35,411 INFO L225 Difference]: With dead ends: 9376 [2022-02-10 23:12:35,411 INFO L226 Difference]: Without dead ends: 9253 [2022-02-10 23:12:35,412 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 240 SyntacticMatches, 1 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8636 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=3300, Invalid=22140, Unknown=0, NotChecked=0, Total=25440 [2022-02-10 23:12:35,413 INFO L934 BasicCegarLoop]: 208 mSDtfsCounter, 1024 mSDsluCounter, 3584 mSDsCounter, 0 mSdLazyCounter, 1871 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1024 SdHoareTripleChecker+Valid, 3565 SdHoareTripleChecker+Invalid, 2018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 1871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 23:12:35,413 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1024 Valid, 3565 Invalid, 2018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 1871 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-10 23:12:35,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9253 states. [2022-02-10 23:12:35,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9253 to 4848. [2022-02-10 23:12:35,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4848 states, 4847 states have (on average 2.784402723334021) internal successors, (13496), 4847 states have internal predecessors, (13496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:12:35,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4848 states to 4848 states and 13496 transitions. [2022-02-10 23:12:35,504 INFO L78 Accepts]: Start accepts. Automaton has 4848 states and 13496 transitions. Word has length 75 [2022-02-10 23:12:35,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:12:35,504 INFO L470 AbstractCegarLoop]: Abstraction has 4848 states and 13496 transitions. [2022-02-10 23:12:35,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:12:35,504 INFO L276 IsEmpty]: Start isEmpty. Operand 4848 states and 13496 transitions. [2022-02-10 23:12:35,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-10 23:12:35,510 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:12:35,510 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:12:35,527 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2022-02-10 23:12:35,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-02-10 23:12:35,711 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:12:35,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:12:35,712 INFO L85 PathProgramCache]: Analyzing trace with hash -922035642, now seen corresponding path program 35 times [2022-02-10 23:12:35,712 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:12:35,712 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171549646] [2022-02-10 23:12:35,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:12:35,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:12:35,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:12:35,796 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:12:35,796 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:12:35,796 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171549646] [2022-02-10 23:12:35,796 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171549646] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:12:35,796 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537529062] [2022-02-10 23:12:35,797 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 23:12:35,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:12:35,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:12:35,798 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:12:35,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-02-10 23:12:35,854 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-10 23:12:35,854 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:12:35,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 23:12:35,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:12:36,154 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:12:36,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:12:36,363 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:12:36,363 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537529062] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:12:36,363 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:12:36,363 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 13] total 31 [2022-02-10 23:12:36,364 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788312204] [2022-02-10 23:12:36,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:12:36,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-10 23:12:36,364 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:12:36,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-10 23:12:36,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=841, Unknown=0, NotChecked=0, Total=930 [2022-02-10 23:12:36,364 INFO L87 Difference]: Start difference. First operand 4848 states and 13496 transitions. Second operand has 31 states, 31 states have (on average 5.258064516129032) internal successors, (163), 31 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:12:38,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:12:38,331 INFO L93 Difference]: Finished difference Result 6232 states and 17052 transitions. [2022-02-10 23:12:38,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-02-10 23:12:38,331 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.258064516129032) internal successors, (163), 31 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-02-10 23:12:38,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:12:38,340 INFO L225 Difference]: With dead ends: 6232 [2022-02-10 23:12:38,340 INFO L226 Difference]: Without dead ends: 6181 [2022-02-10 23:12:38,341 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 192 SyntacticMatches, 2 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3111 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1525, Invalid=9817, Unknown=0, NotChecked=0, Total=11342 [2022-02-10 23:12:38,341 INFO L934 BasicCegarLoop]: 219 mSDtfsCounter, 809 mSDsluCounter, 3440 mSDsCounter, 0 mSdLazyCounter, 1732 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 3438 SdHoareTripleChecker+Invalid, 1819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 23:12:38,341 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [809 Valid, 3438 Invalid, 1819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1732 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 23:12:38,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6181 states. [2022-02-10 23:12:38,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6181 to 5092. [2022-02-10 23:12:38,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5092 states, 5091 states have (on average 2.7929679827145946) internal successors, (14219), 5091 states have internal predecessors, (14219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:12:38,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5092 states to 5092 states and 14219 transitions. [2022-02-10 23:12:38,406 INFO L78 Accepts]: Start accepts. Automaton has 5092 states and 14219 transitions. Word has length 75 [2022-02-10 23:12:38,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:12:38,407 INFO L470 AbstractCegarLoop]: Abstraction has 5092 states and 14219 transitions. [2022-02-10 23:12:38,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.258064516129032) internal successors, (163), 31 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:12:38,407 INFO L276 IsEmpty]: Start isEmpty. Operand 5092 states and 14219 transitions. [2022-02-10 23:12:38,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-10 23:12:38,412 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:12:38,412 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:12:38,428 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2022-02-10 23:12:38,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:12:38,613 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:12:38,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:12:38,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1391263278, now seen corresponding path program 36 times [2022-02-10 23:12:38,613 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:12:38,613 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023222723] [2022-02-10 23:12:38,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:12:38,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:12:38,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:12:38,692 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:12:38,692 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:12:38,692 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023222723] [2022-02-10 23:12:38,693 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023222723] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:12:38,693 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683103633] [2022-02-10 23:12:38,693 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 23:12:38,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:12:38,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:12:38,694 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:12:38,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-02-10 23:12:38,750 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-10 23:12:38,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:12:38,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-10 23:12:38,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:12:38,956 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:12:38,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:12:39,134 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:12:39,135 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683103633] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:12:39,135 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:12:39,135 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 25 [2022-02-10 23:12:39,135 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917004532] [2022-02-10 23:12:39,135 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:12:39,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 23:12:39,135 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:12:39,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 23:12:39,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2022-02-10 23:12:39,136 INFO L87 Difference]: Start difference. First operand 5092 states and 14219 transitions. Second operand has 25 states, 25 states have (on average 5.36) internal successors, (134), 25 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:12:40,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:12:40,367 INFO L93 Difference]: Finished difference Result 6852 states and 18818 transitions. [2022-02-10 23:12:40,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-02-10 23:12:40,368 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.36) internal successors, (134), 25 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-02-10 23:12:40,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:12:40,378 INFO L225 Difference]: With dead ends: 6852 [2022-02-10 23:12:40,378 INFO L226 Difference]: Without dead ends: 6822 [2022-02-10 23:12:40,379 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2549 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1802, Invalid=6570, Unknown=0, NotChecked=0, Total=8372 [2022-02-10 23:12:40,380 INFO L934 BasicCegarLoop]: 152 mSDtfsCounter, 826 mSDsluCounter, 1856 mSDsCounter, 0 mSdLazyCounter, 800 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 1828 SdHoareTripleChecker+Invalid, 935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 23:12:40,380 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [826 Valid, 1828 Invalid, 935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 800 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 23:12:40,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6822 states. [2022-02-10 23:12:40,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6822 to 5256. [2022-02-10 23:12:40,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5256 states, 5255 states have (on average 2.7954329210275928) internal successors, (14690), 5255 states have internal predecessors, (14690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:12:40,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5256 states to 5256 states and 14690 transitions. [2022-02-10 23:12:40,450 INFO L78 Accepts]: Start accepts. Automaton has 5256 states and 14690 transitions. Word has length 75 [2022-02-10 23:12:40,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:12:40,451 INFO L470 AbstractCegarLoop]: Abstraction has 5256 states and 14690 transitions. [2022-02-10 23:12:40,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.36) internal successors, (134), 25 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:12:40,451 INFO L276 IsEmpty]: Start isEmpty. Operand 5256 states and 14690 transitions. [2022-02-10 23:12:40,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-02-10 23:12:40,456 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:12:40,456 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-02-10 23:12:40,472 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2022-02-10 23:12:40,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2022-02-10 23:12:40,664 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:12:40,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:12:40,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1936914827, now seen corresponding path program 37 times [2022-02-10 23:12:40,664 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:12:40,664 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554340896] [2022-02-10 23:12:40,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:12:40,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:12:40,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:12:40,750 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:12:40,750 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:12:40,751 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554340896] [2022-02-10 23:12:40,751 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554340896] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:12:40,751 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410759320] [2022-02-10 23:12:40,751 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 23:12:40,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:12:40,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:12:40,752 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:12:40,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-02-10 23:12:40,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:12:40,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 15 conjunts are in the unsatisfiable core [2022-02-10 23:12:40,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:12:41,071 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:12:41,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:12:41,272 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:12:41,272 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410759320] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:12:41,272 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:12:41,272 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 29 [2022-02-10 23:12:41,272 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569386187] [2022-02-10 23:12:41,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:12:41,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-02-10 23:12:41,273 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:12:41,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-02-10 23:12:41,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=663, Unknown=0, NotChecked=0, Total=812 [2022-02-10 23:12:41,273 INFO L87 Difference]: Start difference. First operand 5256 states and 14690 transitions. Second operand has 29 states, 29 states have (on average 4.379310344827586) internal successors, (127), 29 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:12:41,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:12:41,879 INFO L93 Difference]: Finished difference Result 6563 states and 18110 transitions. [2022-02-10 23:12:41,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-02-10 23:12:41,880 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.379310344827586) internal successors, (127), 29 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-02-10 23:12:41,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:12:41,890 INFO L225 Difference]: With dead ends: 6563 [2022-02-10 23:12:41,890 INFO L226 Difference]: Without dead ends: 6563 [2022-02-10 23:12:41,890 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 141 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 774 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=773, Invalid=2533, Unknown=0, NotChecked=0, Total=3306 [2022-02-10 23:12:41,891 INFO L934 BasicCegarLoop]: 156 mSDtfsCounter, 549 mSDsluCounter, 1526 mSDsCounter, 0 mSdLazyCounter, 771 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 1557 SdHoareTripleChecker+Invalid, 808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 23:12:41,891 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [549 Valid, 1557 Invalid, 808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 771 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 23:12:41,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6563 states. [2022-02-10 23:12:41,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6563 to 5346. [2022-02-10 23:12:41,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5346 states, 5345 states have (on average 2.802806361085126) internal successors, (14981), 5345 states have internal predecessors, (14981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:12:41,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5346 states to 5346 states and 14981 transitions. [2022-02-10 23:12:41,971 INFO L78 Accepts]: Start accepts. Automaton has 5346 states and 14981 transitions. Word has length 79 [2022-02-10 23:12:41,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:12:41,972 INFO L470 AbstractCegarLoop]: Abstraction has 5346 states and 14981 transitions. [2022-02-10 23:12:41,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 4.379310344827586) internal successors, (127), 29 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:12:41,972 INFO L276 IsEmpty]: Start isEmpty. Operand 5346 states and 14981 transitions. [2022-02-10 23:12:41,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-02-10 23:12:41,980 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:12:41,980 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-02-10 23:12:41,999 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-02-10 23:12:42,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:12:42,195 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:12:42,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:12:42,196 INFO L85 PathProgramCache]: Analyzing trace with hash -2100757425, now seen corresponding path program 38 times [2022-02-10 23:12:42,196 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:12:42,196 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824853601] [2022-02-10 23:12:42,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:12:42,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:12:42,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:12:42,288 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:12:42,289 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:12:42,289 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824853601] [2022-02-10 23:12:42,289 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824853601] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:12:42,289 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603955604] [2022-02-10 23:12:42,289 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 23:12:42,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:12:42,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:12:42,290 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:12:42,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-02-10 23:12:42,353 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:12:42,354 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:12:42,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 15 conjunts are in the unsatisfiable core [2022-02-10 23:12:42,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:12:42,648 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:12:42,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:12:42,884 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:12:42,885 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603955604] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:12:42,885 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:12:42,885 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 29 [2022-02-10 23:12:42,885 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028174103] [2022-02-10 23:12:42,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:12:42,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-02-10 23:12:42,885 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:12:42,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-02-10 23:12:42,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=696, Unknown=0, NotChecked=0, Total=812 [2022-02-10 23:12:42,886 INFO L87 Difference]: Start difference. First operand 5346 states and 14981 transitions. Second operand has 29 states, 29 states have (on average 4.310344827586207) internal successors, (125), 29 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:12:44,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:12:44,328 INFO L93 Difference]: Finished difference Result 8611 states and 23427 transitions. [2022-02-10 23:12:44,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-02-10 23:12:44,328 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.310344827586207) internal successors, (125), 29 states have internal predecessors, (125), 0 states have call successors, (0), 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 79 [2022-02-10 23:12:44,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:12:44,342 INFO L225 Difference]: With dead ends: 8611 [2022-02-10 23:12:44,343 INFO L226 Difference]: Without dead ends: 8611 [2022-02-10 23:12:44,344 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 141 SyntacticMatches, 2 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4224 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2433, Invalid=9999, Unknown=0, NotChecked=0, Total=12432 [2022-02-10 23:12:44,344 INFO L934 BasicCegarLoop]: 158 mSDtfsCounter, 915 mSDsluCounter, 2115 mSDsCounter, 0 mSdLazyCounter, 1060 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 915 SdHoareTripleChecker+Valid, 2121 SdHoareTripleChecker+Invalid, 1161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 23:12:44,345 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [915 Valid, 2121 Invalid, 1161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1060 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 23:12:44,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8611 states. [2022-02-10 23:12:44,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8611 to 5558. [2022-02-10 23:12:44,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5558 states, 5557 states have (on average 2.813028612560734) internal successors, (15632), 5557 states have internal predecessors, (15632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:12:44,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5558 states to 5558 states and 15632 transitions. [2022-02-10 23:12:44,447 INFO L78 Accepts]: Start accepts. Automaton has 5558 states and 15632 transitions. Word has length 79 [2022-02-10 23:12:44,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:12:44,447 INFO L470 AbstractCegarLoop]: Abstraction has 5558 states and 15632 transitions. [2022-02-10 23:12:44,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 4.310344827586207) internal successors, (125), 29 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:12:44,447 INFO L276 IsEmpty]: Start isEmpty. Operand 5558 states and 15632 transitions. [2022-02-10 23:12:44,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-02-10 23:12:44,454 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:12:44,454 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-02-10 23:12:44,472 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-02-10 23:12:44,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:12:44,655 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:12:44,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:12:44,655 INFO L85 PathProgramCache]: Analyzing trace with hash -562924017, now seen corresponding path program 39 times [2022-02-10 23:12:44,655 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:12:44,655 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463732359] [2022-02-10 23:12:44,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:12:44,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:12:44,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:12:44,730 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:12:44,730 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:12:44,730 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463732359] [2022-02-10 23:12:44,730 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463732359] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:12:44,730 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335541285] [2022-02-10 23:12:44,730 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 23:12:44,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:12:44,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:12:44,732 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:12:44,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-02-10 23:12:44,794 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 23:12:44,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:12:44,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-10 23:12:44,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:12:45,052 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-02-10 23:12:45,053 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-10 23:12:45,053 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [335541285] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 23:12:45,053 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-10 23:12:45,053 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 22 [2022-02-10 23:12:45,053 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130372626] [2022-02-10 23:12:45,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 23:12:45,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-10 23:12:45,053 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:12:45,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-10 23:12:45,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462 [2022-02-10 23:12:45,054 INFO L87 Difference]: Start difference. First operand 5558 states and 15632 transitions. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:12:45,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:12:45,175 INFO L93 Difference]: Finished difference Result 5675 states and 15909 transitions. [2022-02-10 23:12:45,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-10 23:12:45,175 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 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 79 [2022-02-10 23:12:45,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:12:45,176 INFO L225 Difference]: With dead ends: 5675 [2022-02-10 23:12:45,176 INFO L226 Difference]: Without dead ends: 0 [2022-02-10 23:12:45,176 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=636, Unknown=0, NotChecked=0, Total=756 [2022-02-10 23:12:45,176 INFO L934 BasicCegarLoop]: 112 mSDtfsCounter, 158 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 682 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:12:45,176 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 682 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:12:45,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-02-10 23:12:45,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-02-10 23:12:45,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:12:45,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-02-10 23:12:45,177 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 79 [2022-02-10 23:12:45,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:12:45,177 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-02-10 23:12:45,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:12:45,177 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-02-10 23:12:45,177 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-10 23:12:45,179 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-02-10 23:12:45,179 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-02-10 23:12:45,179 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-02-10 23:12:45,196 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-02-10 23:12:45,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2022-02-10 23:12:45,389 INFO L733 BasicCegarLoop]: Path program histogram: [39, 2, 2, 1, 1] [2022-02-10 23:12:45,391 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-10 23:12:45,391 INFO L184 ceAbstractionStarter]: Computing trace abstraction results [2022-02-10 23:12:45,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.02 11:12:45 BasicIcfg [2022-02-10 23:12:45,392 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-10 23:12:45,392 INFO L158 Benchmark]: Toolchain (without parser) took 80077.66ms. Allocated memory was 177.2MB in the beginning and 553.6MB in the end (delta: 376.4MB). Free memory was 127.2MB in the beginning and 176.7MB in the end (delta: -49.5MB). Peak memory consumption was 327.7MB. Max. memory is 8.0GB. [2022-02-10 23:12:45,392 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 177.2MB. Free memory is still 143.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-10 23:12:45,392 INFO L158 Benchmark]: CACSL2BoogieTranslator took 236.60ms. Allocated memory is still 177.2MB. Free memory was 127.1MB in the beginning and 153.6MB in the end (delta: -26.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-02-10 23:12:45,392 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.23ms. Allocated memory is still 177.2MB. Free memory was 153.6MB in the beginning and 152.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-10 23:12:45,393 INFO L158 Benchmark]: Boogie Preprocessor took 27.36ms. Allocated memory is still 177.2MB. Free memory was 152.0MB in the beginning and 150.8MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-10 23:12:45,393 INFO L158 Benchmark]: RCFGBuilder took 276.58ms. Allocated memory is still 177.2MB. Free memory was 150.8MB in the beginning and 139.4MB in the end (delta: 11.4MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-02-10 23:12:45,393 INFO L158 Benchmark]: TraceAbstraction took 79504.90ms. Allocated memory was 177.2MB in the beginning and 553.6MB in the end (delta: 376.4MB). Free memory was 138.9MB in the beginning and 176.7MB in the end (delta: -37.8MB). Peak memory consumption was 339.7MB. Max. memory is 8.0GB. [2022-02-10 23:12:45,393 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 177.2MB. Free memory is still 143.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 236.60ms. Allocated memory is still 177.2MB. Free memory was 127.1MB in the beginning and 153.6MB in the end (delta: -26.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 27.23ms. Allocated memory is still 177.2MB. Free memory was 153.6MB in the beginning and 152.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 27.36ms. Allocated memory is still 177.2MB. Free memory was 152.0MB in the beginning and 150.8MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 276.58ms. Allocated memory is still 177.2MB. Free memory was 150.8MB in the beginning and 139.4MB in the end (delta: 11.4MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 79504.90ms. Allocated memory was 177.2MB in the beginning and 553.6MB in the end (delta: 376.4MB). Free memory was 138.9MB in the beginning and 176.7MB in the end (delta: -37.8MB). Peak memory consumption was 339.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 70]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 95 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 79.4s, OverallIterations: 45, TraceHistogramMax: 3, PathProgramHistogramMax: 39, EmptinessCheckTime: 0.3s, AutomataDifference: 43.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 22676 SdHoareTripleChecker+Valid, 12.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 22676 mSDsluCounter, 70671 SdHoareTripleChecker+Invalid, 10.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 69388 mSDsCounter, 2891 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 33866 IncrementalHoareTripleChecker+Invalid, 36757 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2891 mSolverCounterUnsat, 5951 mSDtfsCounter, 33866 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8013 GetRequests, 5382 SyntacticMatches, 48 SemanticMatches, 2583 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66381 ImplicationChecksByTransitivity, 35.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6975occurred in iteration=36, InterpolantAutomatonStates: 2078, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.0s AutomataMinimizationTime, 45 MinimizatonAttempts, 68903 StatesRemovedByMinimization, 43 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 21.1s InterpolantComputationTime, 5877 NumberOfCodeBlocks, 5825 NumberOfCodeBlocksAsserted, 126 NumberOfCheckSat, 8326 ConstructedInterpolants, 0 QuantifiedInterpolants, 33388 SizeOfPredicates, 378 NumberOfNonLiveVariables, 5884 ConjunctsInSsa, 593 ConjunctsInUnsatCore, 119 InterpolantComputations, 10 PerfectInterpolantSequences, 458/912 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-02-10 23:12:45,418 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...