/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-nonblocking-cntr-alt.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-4b0ab11 [2022-03-03 17:36:15,385 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-03 17:36:15,387 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-03 17:36:15,409 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-03 17:36:15,434 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-03 17:36:15,434 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-03 17:36:15,435 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-03 17:36:15,441 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-03-03 17:36:15,465 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-03 17:36:15,466 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-03 17:36:15,466 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-03 17:36:15,466 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-03 17:36:15,466 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-03 17:36:15,466 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-03 17:36:15,467 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-03 17:36:15,467 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-03 17:36:15,467 INFO L138 SettingsManager]: * Use SBE=true [2022-03-03 17:36:15,467 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-03 17:36:15,467 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-03 17:36:15,467 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-03 17:36:15,467 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-03 17:36:15,467 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-03 17:36:15,468 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-03 17:36:15,468 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-03 17:36:15,468 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-03 17:36:15,468 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-03 17:36:15,468 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-03 17:36:15,468 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-03 17:36:15,468 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-03 17:36:15,468 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-03 17:36:15,468 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-03 17:36:15,468 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-03 17:36:15,468 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-03 17:36:15,468 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-03 17:36:15,469 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-03 17:36:15,469 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-03 17:36:15,469 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-03 17:36:15,469 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-03 17:36:15,469 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-03 17:36:15,469 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-03 17:36:15,469 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-03 17:36:15,469 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-03 17:36:15,621 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-03 17:36:15,636 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-03 17:36:15,638 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-03 17:36:15,639 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-03 17:36:15,639 INFO L275 PluginConnector]: CDTParser initialized [2022-03-03 17:36:15,640 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-nonblocking-cntr-alt.wvr.c [2022-03-03 17:36:15,695 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88e10f7f7/c1dcd7e4949d42939b554407783d9f41/FLAGa8eff0a82 [2022-03-03 17:36:15,976 INFO L306 CDTParser]: Found 1 translation units. [2022-03-03 17:36:15,977 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-nonblocking-cntr-alt.wvr.c [2022-03-03 17:36:15,981 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88e10f7f7/c1dcd7e4949d42939b554407783d9f41/FLAGa8eff0a82 [2022-03-03 17:36:16,423 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88e10f7f7/c1dcd7e4949d42939b554407783d9f41 [2022-03-03 17:36:16,424 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-03 17:36:16,425 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-03 17:36:16,428 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-03 17:36:16,428 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-03 17:36:16,436 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-03 17:36:16,437 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 05:36:16" (1/1) ... [2022-03-03 17:36:16,437 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f6fd94b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:36:16, skipping insertion in model container [2022-03-03 17:36:16,438 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 05:36:16" (1/1) ... [2022-03-03 17:36:16,443 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-03 17:36:16,454 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-03 17:36:16,593 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-nonblocking-cntr-alt.wvr.c[2098,2111] [2022-03-03 17:36:16,595 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-03 17:36:16,599 INFO L203 MainTranslator]: Completed pre-run [2022-03-03 17:36:16,615 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-nonblocking-cntr-alt.wvr.c[2098,2111] [2022-03-03 17:36:16,615 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-03 17:36:16,624 INFO L208 MainTranslator]: Completed translation [2022-03-03 17:36:16,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:36:16 WrapperNode [2022-03-03 17:36:16,624 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-03 17:36:16,625 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-03 17:36:16,625 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-03 17:36:16,626 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-03 17:36:16,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:36:16" (1/1) ... [2022-03-03 17:36:16,634 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:36:16" (1/1) ... [2022-03-03 17:36:16,645 INFO L137 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 57 [2022-03-03 17:36:16,645 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-03 17:36:16,646 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-03 17:36:16,646 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-03 17:36:16,646 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-03 17:36:16,650 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:36:16" (1/1) ... [2022-03-03 17:36:16,650 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:36:16" (1/1) ... [2022-03-03 17:36:16,651 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:36:16" (1/1) ... [2022-03-03 17:36:16,652 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:36:16" (1/1) ... [2022-03-03 17:36:16,654 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:36:16" (1/1) ... [2022-03-03 17:36:16,656 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:36:16" (1/1) ... [2022-03-03 17:36:16,657 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:36:16" (1/1) ... [2022-03-03 17:36:16,658 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-03 17:36:16,662 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-03 17:36:16,662 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-03 17:36:16,662 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-03 17:36:16,664 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:36:16" (1/1) ... [2022-03-03 17:36:16,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-03 17:36:16,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:36:16,692 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-03 17:36:16,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-03 17:36:16,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-03 17:36:16,722 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-03 17:36:16,722 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-03 17:36:16,722 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-03 17:36:16,722 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-03 17:36:16,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-03 17:36:16,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-03 17:36:16,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-03 17:36:16,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-03-03 17:36:16,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-03-03 17:36:16,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-03 17:36:16,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-03 17:36:16,724 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-03 17:36:16,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-03 17:36:16,725 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-03 17:36:16,790 INFO L234 CfgBuilder]: Building ICFG [2022-03-03 17:36:16,791 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-03 17:36:16,954 INFO L275 CfgBuilder]: Performing block encoding [2022-03-03 17:36:16,977 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-03 17:36:16,977 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-03-03 17:36:16,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.03 05:36:16 BoogieIcfgContainer [2022-03-03 17:36:16,979 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-03 17:36:16,980 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-03 17:36:16,980 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-03 17:36:16,982 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-03 17:36:16,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 05:36:16" (1/3) ... [2022-03-03 17:36:16,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39e10899 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 05:36:16, skipping insertion in model container [2022-03-03 17:36:16,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:36:16" (2/3) ... [2022-03-03 17:36:16,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39e10899 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 05:36:16, skipping insertion in model container [2022-03-03 17:36:16,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.03 05:36:16" (3/3) ... [2022-03-03 17:36:16,984 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-nonblocking-cntr-alt.wvr.c [2022-03-03 17:36:16,987 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-03 17:36:16,987 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-03 17:36:16,988 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-03 17:36:16,988 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-03 17:36:17,021 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:17,021 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:17,023 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:17,023 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:17,023 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:17,024 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:17,024 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:17,024 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:17,024 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:17,024 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:17,025 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:17,025 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:17,025 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:17,025 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:17,026 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:17,026 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:17,026 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:17,026 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:17,026 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:17,027 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:17,027 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:17,027 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:17,027 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:17,027 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:17,028 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:17,028 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:17,028 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:17,028 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:17,028 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:17,028 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:17,029 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:17,029 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:17,029 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:17,029 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:17,029 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:17,029 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:17,029 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:17,029 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:17,029 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:17,029 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:17,030 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:17,030 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:17,030 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:17,030 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:17,032 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:17,032 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:17,032 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:17,032 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:17,032 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:17,033 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:17,033 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:17,033 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:17,033 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:17,033 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:17,036 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-03-03 17:36:17,061 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-03 17:36:17,066 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-03 17:36:17,066 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-03 17:36:17,072 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 87 places, 86 transitions, 188 flow [2022-03-03 17:36:17,113 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 332 states, 331 states have (on average 2.5770392749244713) internal successors, (853), 331 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:17,115 INFO L276 IsEmpty]: Start isEmpty. Operand has 332 states, 331 states have (on average 2.5770392749244713) internal successors, (853), 331 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:17,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-03 17:36:17,126 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:36:17,126 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:36:17,127 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:36:17,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:36:17,130 INFO L85 PathProgramCache]: Analyzing trace with hash 146847265, now seen corresponding path program 1 times [2022-03-03 17:36:17,136 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:36:17,136 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839667253] [2022-03-03 17:36:17,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:36:17,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:36:17,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:36:17,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:17,248 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:36:17,248 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839667253] [2022-03-03 17:36:17,248 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839667253] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:36:17,248 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:36:17,248 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-03 17:36:17,249 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770267307] [2022-03-03 17:36:17,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:36:17,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-03-03 17:36:17,252 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:36:17,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-03-03 17:36:17,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-03 17:36:17,271 INFO L87 Difference]: Start difference. First operand has 332 states, 331 states have (on average 2.5770392749244713) internal successors, (853), 331 states have internal predecessors, (853), 0 states have call successors, (0), 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 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:17,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:36:17,294 INFO L93 Difference]: Finished difference Result 332 states and 782 transitions. [2022-03-03 17:36:17,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-03 17:36:17,296 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-03-03 17:36:17,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:36:17,305 INFO L225 Difference]: With dead ends: 332 [2022-03-03 17:36:17,305 INFO L226 Difference]: Without dead ends: 330 [2022-03-03 17:36:17,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-03 17:36:17,308 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:36:17,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 65 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:36:17,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2022-03-03 17:36:17,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 330. [2022-03-03 17:36:17,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 329 states have (on average 2.370820668693009) internal successors, (780), 329 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:17,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 780 transitions. [2022-03-03 17:36:17,353 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 780 transitions. Word has length 62 [2022-03-03 17:36:17,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:36:17,353 INFO L470 AbstractCegarLoop]: Abstraction has 330 states and 780 transitions. [2022-03-03 17:36:17,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:17,353 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 780 transitions. [2022-03-03 17:36:17,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-03 17:36:17,356 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:36:17,356 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:36:17,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-03 17:36:17,357 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:36:17,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:36:17,357 INFO L85 PathProgramCache]: Analyzing trace with hash -618423457, now seen corresponding path program 1 times [2022-03-03 17:36:17,358 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:36:17,358 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198416723] [2022-03-03 17:36:17,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:36:17,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:36:17,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:36:17,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:17,566 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:36:17,566 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198416723] [2022-03-03 17:36:17,566 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198416723] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:36:17,566 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:36:17,566 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-03 17:36:17,567 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670154707] [2022-03-03 17:36:17,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:36:17,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-03 17:36:17,568 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:36:17,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-03 17:36:17,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-03-03 17:36:17,568 INFO L87 Difference]: Start difference. First operand 330 states and 780 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:17,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:36:17,637 INFO L93 Difference]: Finished difference Result 450 states and 1092 transitions. [2022-03-03 17:36:17,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-03 17:36:17,638 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-03-03 17:36:17,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:36:17,640 INFO L225 Difference]: With dead ends: 450 [2022-03-03 17:36:17,640 INFO L226 Difference]: Without dead ends: 450 [2022-03-03 17:36:17,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2022-03-03 17:36:17,642 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 108 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:36:17,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 135 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:36:17,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-03-03 17:36:17,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 360. [2022-03-03 17:36:17,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 359 states have (on average 2.3899721448467965) internal successors, (858), 359 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:17,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 858 transitions. [2022-03-03 17:36:17,661 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 858 transitions. Word has length 62 [2022-03-03 17:36:17,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:36:17,661 INFO L470 AbstractCegarLoop]: Abstraction has 360 states and 858 transitions. [2022-03-03 17:36:17,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:17,661 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 858 transitions. [2022-03-03 17:36:17,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-03 17:36:17,663 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:36:17,663 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:36:17,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-03 17:36:17,663 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:36:17,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:36:17,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1788424323, now seen corresponding path program 1 times [2022-03-03 17:36:17,664 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:36:17,664 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497539802] [2022-03-03 17:36:17,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:36:17,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:36:17,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:36:17,900 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:36:17,901 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:36:17,901 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497539802] [2022-03-03 17:36:17,901 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497539802] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:36:17,901 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:36:17,901 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-03 17:36:17,901 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15355315] [2022-03-03 17:36:17,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:36:17,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-03 17:36:17,902 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:36:17,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-03 17:36:17,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-03-03 17:36:17,902 INFO L87 Difference]: Start difference. First operand 360 states and 858 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 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) [2022-03-03 17:36:17,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:36:17,949 INFO L93 Difference]: Finished difference Result 446 states and 1090 transitions. [2022-03-03 17:36:17,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-03 17:36:17,949 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 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 [2022-03-03 17:36:17,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:36:17,951 INFO L225 Difference]: With dead ends: 446 [2022-03-03 17:36:17,951 INFO L226 Difference]: Without dead ends: 446 [2022-03-03 17:36:17,951 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2022-03-03 17:36:17,952 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 83 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:36:17,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 157 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:36:17,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2022-03-03 17:36:17,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 403. [2022-03-03 17:36:17,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 402 states have (on average 2.4228855721393034) internal successors, (974), 402 states have internal predecessors, (974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:17,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 974 transitions. [2022-03-03 17:36:17,965 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 974 transitions. Word has length 67 [2022-03-03 17:36:17,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:36:17,965 INFO L470 AbstractCegarLoop]: Abstraction has 403 states and 974 transitions. [2022-03-03 17:36:17,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 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) [2022-03-03 17:36:17,965 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 974 transitions. [2022-03-03 17:36:17,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-03 17:36:17,967 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:36:17,967 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:36:17,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-03 17:36:17,967 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:36:17,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:36:17,968 INFO L85 PathProgramCache]: Analyzing trace with hash 679645881, now seen corresponding path program 1 times [2022-03-03 17:36:17,968 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:36:17,968 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159249350] [2022-03-03 17:36:17,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:36:17,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:36:17,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:36:18,259 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:18,260 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:36:18,260 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159249350] [2022-03-03 17:36:18,260 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159249350] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:36:18,260 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808320917] [2022-03-03 17:36:18,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:36:18,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:36:18,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:36:18,262 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:36:18,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-03 17:36:18,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:36:18,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:36:18,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:36:18,858 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:18,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:36:19,339 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:19,339 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808320917] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:36:19,340 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:36:19,340 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 33 [2022-03-03 17:36:19,340 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783894276] [2022-03-03 17:36:19,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:36:19,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 17:36:19,340 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:36:19,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 17:36:19,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=882, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 17:36:19,342 INFO L87 Difference]: Start difference. First operand 403 states and 974 transitions. Second operand has 33 states, 33 states have (on average 4.212121212121212) internal successors, (139), 33 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) [2022-03-03 17:36:21,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:36:21,269 INFO L93 Difference]: Finished difference Result 2098 states and 5141 transitions. [2022-03-03 17:36:21,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-03-03 17:36:21,269 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.212121212121212) internal successors, (139), 33 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 69 [2022-03-03 17:36:21,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:36:21,276 INFO L225 Difference]: With dead ends: 2098 [2022-03-03 17:36:21,276 INFO L226 Difference]: Without dead ends: 1648 [2022-03-03 17:36:21,278 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 118 SyntacticMatches, 2 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2152 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1113, Invalid=6027, Unknown=0, NotChecked=0, Total=7140 [2022-03-03 17:36:21,278 INFO L933 BasicCegarLoop]: 237 mSDtfsCounter, 1102 mSDsluCounter, 3465 mSDsCounter, 0 mSdLazyCounter, 1259 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1102 SdHoareTripleChecker+Valid, 3477 SdHoareTripleChecker+Invalid, 1329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:36:21,279 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1102 Valid, 3477 Invalid, 1329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1259 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:36:21,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1648 states. [2022-03-03 17:36:21,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1648 to 707. [2022-03-03 17:36:21,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 707 states, 706 states have (on average 2.5651558073654392) internal successors, (1811), 706 states have internal predecessors, (1811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:21,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 1811 transitions. [2022-03-03 17:36:21,304 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 1811 transitions. Word has length 69 [2022-03-03 17:36:21,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:36:21,304 INFO L470 AbstractCegarLoop]: Abstraction has 707 states and 1811 transitions. [2022-03-03 17:36:21,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.212121212121212) internal successors, (139), 33 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) [2022-03-03 17:36:21,304 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 1811 transitions. [2022-03-03 17:36:21,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-03 17:36:21,306 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:36:21,307 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:36:21,329 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-03 17:36:21,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:36:21,524 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:36:21,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:36:21,524 INFO L85 PathProgramCache]: Analyzing trace with hash 302508043, now seen corresponding path program 2 times [2022-03-03 17:36:21,524 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:36:21,524 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990835679] [2022-03-03 17:36:21,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:36:21,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:36:21,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:36:21,730 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:21,730 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:36:21,730 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990835679] [2022-03-03 17:36:21,730 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990835679] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:36:21,730 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966717647] [2022-03-03 17:36:21,730 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:36:21,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:36:21,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:36:21,732 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:36:21,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-03 17:36:21,781 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:36:21,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:36:21,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:36:21,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:36:22,191 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:22,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:36:22,674 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:22,674 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966717647] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:36:22,674 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:36:22,674 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 33 [2022-03-03 17:36:22,675 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685619426] [2022-03-03 17:36:22,675 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:36:22,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 17:36:22,675 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:36:22,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 17:36:22,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=880, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 17:36:22,676 INFO L87 Difference]: Start difference. First operand 707 states and 1811 transitions. Second operand has 33 states, 33 states have (on average 4.212121212121212) internal successors, (139), 33 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) [2022-03-03 17:36:25,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:36:25,439 INFO L93 Difference]: Finished difference Result 2604 states and 6577 transitions. [2022-03-03 17:36:25,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-03-03 17:36:25,439 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.212121212121212) internal successors, (139), 33 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 69 [2022-03-03 17:36:25,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:36:25,448 INFO L225 Difference]: With dead ends: 2604 [2022-03-03 17:36:25,448 INFO L226 Difference]: Without dead ends: 2451 [2022-03-03 17:36:25,450 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 118 SyntacticMatches, 2 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3418 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1784, Invalid=8116, Unknown=0, NotChecked=0, Total=9900 [2022-03-03 17:36:25,453 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 1577 mSDsluCounter, 3068 mSDsCounter, 0 mSdLazyCounter, 1309 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1577 SdHoareTripleChecker+Valid, 3077 SdHoareTripleChecker+Invalid, 1459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 1309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:36:25,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1577 Valid, 3077 Invalid, 1459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 1309 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:36:25,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2451 states. [2022-03-03 17:36:25,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2451 to 867. [2022-03-03 17:36:25,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 867 states, 866 states have (on average 2.6963048498845263) internal successors, (2335), 866 states have internal predecessors, (2335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:25,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 2335 transitions. [2022-03-03 17:36:25,486 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 2335 transitions. Word has length 69 [2022-03-03 17:36:25,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:36:25,487 INFO L470 AbstractCegarLoop]: Abstraction has 867 states and 2335 transitions. [2022-03-03 17:36:25,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.212121212121212) internal successors, (139), 33 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) [2022-03-03 17:36:25,487 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 2335 transitions. [2022-03-03 17:36:25,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-03 17:36:25,490 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:36:25,490 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:36:25,509 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-03-03 17:36:25,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:36:25,709 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:36:25,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:36:25,710 INFO L85 PathProgramCache]: Analyzing trace with hash -371365213, now seen corresponding path program 3 times [2022-03-03 17:36:25,710 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:36:25,710 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473306481] [2022-03-03 17:36:25,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:36:25,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:36:25,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:36:25,927 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:25,928 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:36:25,928 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473306481] [2022-03-03 17:36:25,928 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473306481] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:36:25,928 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967518307] [2022-03-03 17:36:25,928 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:36:25,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:36:25,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:36:25,930 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:36:25,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-03 17:36:25,978 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 17:36:25,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:36:25,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:36:25,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:36:26,363 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:26,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:36:26,798 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:26,798 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967518307] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:36:26,798 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:36:26,799 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 33 [2022-03-03 17:36:26,799 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137244098] [2022-03-03 17:36:26,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:36:26,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 17:36:26,799 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:36:26,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 17:36:26,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=881, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 17:36:26,800 INFO L87 Difference]: Start difference. First operand 867 states and 2335 transitions. Second operand has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:29,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:36:29,907 INFO L93 Difference]: Finished difference Result 2667 states and 6760 transitions. [2022-03-03 17:36:29,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-03-03 17:36:29,908 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-03-03 17:36:29,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:36:29,916 INFO L225 Difference]: With dead ends: 2667 [2022-03-03 17:36:29,916 INFO L226 Difference]: Without dead ends: 2439 [2022-03-03 17:36:29,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4876 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=2254, Invalid=11318, Unknown=0, NotChecked=0, Total=13572 [2022-03-03 17:36:29,920 INFO L933 BasicCegarLoop]: 221 mSDtfsCounter, 1710 mSDsluCounter, 3049 mSDsCounter, 0 mSdLazyCounter, 1431 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1710 SdHoareTripleChecker+Valid, 3098 SdHoareTripleChecker+Invalid, 1581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 1431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:36:29,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1710 Valid, 3098 Invalid, 1581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 1431 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:36:29,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2439 states. [2022-03-03 17:36:29,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2439 to 843. [2022-03-03 17:36:29,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 843 states, 842 states have (on average 2.666270783847981) internal successors, (2245), 842 states have internal predecessors, (2245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:29,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 2245 transitions. [2022-03-03 17:36:29,945 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 2245 transitions. Word has length 69 [2022-03-03 17:36:29,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:36:29,945 INFO L470 AbstractCegarLoop]: Abstraction has 843 states and 2245 transitions. [2022-03-03 17:36:29,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:29,945 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 2245 transitions. [2022-03-03 17:36:29,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-03 17:36:29,947 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:36:29,947 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:36:29,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-03 17:36:30,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:36:30,148 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:36:30,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:36:30,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1442639007, now seen corresponding path program 4 times [2022-03-03 17:36:30,148 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:36:30,148 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712606998] [2022-03-03 17:36:30,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:36:30,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:36:30,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:36:30,327 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:30,327 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:36:30,327 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712606998] [2022-03-03 17:36:30,328 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712606998] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:36:30,328 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937733283] [2022-03-03 17:36:30,328 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:36:30,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:36:30,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:36:30,329 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:36:30,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-03 17:36:30,367 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:36:30,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:36:30,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:36:30,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:36:30,711 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:30,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:36:31,132 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:31,132 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937733283] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:36:31,132 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:36:31,132 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 33 [2022-03-03 17:36:31,132 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180616172] [2022-03-03 17:36:31,132 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:36:31,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 17:36:31,133 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:36:31,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 17:36:31,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=888, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 17:36:31,134 INFO L87 Difference]: Start difference. First operand 843 states and 2245 transitions. Second operand has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:33,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:36:33,474 INFO L93 Difference]: Finished difference Result 2368 states and 5958 transitions. [2022-03-03 17:36:33,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-03-03 17:36:33,475 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-03-03 17:36:33,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:36:33,482 INFO L225 Difference]: With dead ends: 2368 [2022-03-03 17:36:33,482 INFO L226 Difference]: Without dead ends: 2146 [2022-03-03 17:36:33,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3455 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1497, Invalid=9009, Unknown=0, NotChecked=0, Total=10506 [2022-03-03 17:36:33,484 INFO L933 BasicCegarLoop]: 233 mSDtfsCounter, 1258 mSDsluCounter, 3074 mSDsCounter, 0 mSdLazyCounter, 1201 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1258 SdHoareTripleChecker+Valid, 3133 SdHoareTripleChecker+Invalid, 1294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:36:33,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1258 Valid, 3133 Invalid, 1294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1201 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:36:33,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2146 states. [2022-03-03 17:36:33,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2146 to 843. [2022-03-03 17:36:33,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 843 states, 842 states have (on average 2.652019002375297) internal successors, (2233), 842 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:33,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 2233 transitions. [2022-03-03 17:36:33,503 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 2233 transitions. Word has length 69 [2022-03-03 17:36:33,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:36:33,503 INFO L470 AbstractCegarLoop]: Abstraction has 843 states and 2233 transitions. [2022-03-03 17:36:33,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:33,504 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 2233 transitions. [2022-03-03 17:36:33,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-03 17:36:33,505 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:36:33,505 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:36:33,523 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-03 17:36:33,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:36:33,721 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:36:33,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:36:33,722 INFO L85 PathProgramCache]: Analyzing trace with hash -281754549, now seen corresponding path program 5 times [2022-03-03 17:36:33,722 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:36:33,722 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787314929] [2022-03-03 17:36:33,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:36:33,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:36:33,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:36:33,918 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:33,919 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:36:33,919 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787314929] [2022-03-03 17:36:33,919 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787314929] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:36:33,919 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775333088] [2022-03-03 17:36:33,919 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:36:33,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:36:33,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:36:33,920 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:36:33,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-03 17:36:33,962 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 17:36:33,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:36:33,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:36:33,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:36:34,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:34,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:36:34,705 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:34,706 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775333088] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:36:34,706 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:36:34,706 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 33 [2022-03-03 17:36:34,706 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341329806] [2022-03-03 17:36:34,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:36:34,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 17:36:34,706 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:36:34,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 17:36:34,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=892, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 17:36:34,707 INFO L87 Difference]: Start difference. First operand 843 states and 2233 transitions. Second operand has 33 states, 33 states have (on average 4.212121212121212) internal successors, (139), 33 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) [2022-03-03 17:36:36,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:36:36,694 INFO L93 Difference]: Finished difference Result 2392 states and 6232 transitions. [2022-03-03 17:36:36,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-03-03 17:36:36,694 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.212121212121212) internal successors, (139), 33 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 69 [2022-03-03 17:36:36,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:36:36,713 INFO L225 Difference]: With dead ends: 2392 [2022-03-03 17:36:36,713 INFO L226 Difference]: Without dead ends: 2290 [2022-03-03 17:36:36,715 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2489 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1351, Invalid=6305, Unknown=0, NotChecked=0, Total=7656 [2022-03-03 17:36:36,715 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 1116 mSDsluCounter, 2502 mSDsCounter, 0 mSdLazyCounter, 1181 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1116 SdHoareTripleChecker+Valid, 2539 SdHoareTripleChecker+Invalid, 1319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 1181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:36:36,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1116 Valid, 2539 Invalid, 1319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 1181 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:36:36,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2290 states. [2022-03-03 17:36:36,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2290 to 887. [2022-03-03 17:36:36,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 887 states, 886 states have (on average 2.6930022573363432) internal successors, (2386), 886 states have internal predecessors, (2386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:36,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 887 states to 887 states and 2386 transitions. [2022-03-03 17:36:36,737 INFO L78 Accepts]: Start accepts. Automaton has 887 states and 2386 transitions. Word has length 69 [2022-03-03 17:36:36,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:36:36,738 INFO L470 AbstractCegarLoop]: Abstraction has 887 states and 2386 transitions. [2022-03-03 17:36:36,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.212121212121212) internal successors, (139), 33 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) [2022-03-03 17:36:36,738 INFO L276 IsEmpty]: Start isEmpty. Operand 887 states and 2386 transitions. [2022-03-03 17:36:36,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-03 17:36:36,741 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:36:36,741 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:36:36,759 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-03-03 17:36:36,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:36:36,955 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:36:36,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:36:36,956 INFO L85 PathProgramCache]: Analyzing trace with hash -955627805, now seen corresponding path program 6 times [2022-03-03 17:36:36,956 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:36:36,956 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064652356] [2022-03-03 17:36:36,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:36:36,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:36:36,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:36:37,152 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:37,153 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:36:37,153 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064652356] [2022-03-03 17:36:37,153 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064652356] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:36:37,153 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323254526] [2022-03-03 17:36:37,153 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:36:37,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:36:37,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:36:37,154 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:36:37,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-03 17:36:37,199 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 17:36:37,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:36:37,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:36:37,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:36:37,549 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:37,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:36:37,979 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:37,979 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323254526] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:36:37,980 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:36:37,980 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 33 [2022-03-03 17:36:37,980 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576488756] [2022-03-03 17:36:37,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:36:37,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 17:36:37,980 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:36:37,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 17:36:37,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=887, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 17:36:37,981 INFO L87 Difference]: Start difference. First operand 887 states and 2386 transitions. Second operand has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:39,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:36:39,878 INFO L93 Difference]: Finished difference Result 2108 states and 5506 transitions. [2022-03-03 17:36:39,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-03-03 17:36:39,879 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-03-03 17:36:39,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:36:39,886 INFO L225 Difference]: With dead ends: 2108 [2022-03-03 17:36:39,886 INFO L226 Difference]: Without dead ends: 1991 [2022-03-03 17:36:39,887 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 118 SyntacticMatches, 2 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2019 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1149, Invalid=5331, Unknown=0, NotChecked=0, Total=6480 [2022-03-03 17:36:39,888 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 710 mSDsluCounter, 3815 mSDsCounter, 0 mSdLazyCounter, 1692 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 710 SdHoareTripleChecker+Valid, 3819 SdHoareTripleChecker+Invalid, 1800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:36:39,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [710 Valid, 3819 Invalid, 1800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1692 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:36:39,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1991 states. [2022-03-03 17:36:39,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1991 to 875. [2022-03-03 17:36:39,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 875 states, 874 states have (on average 2.6739130434782608) internal successors, (2337), 874 states have internal predecessors, (2337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:39,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 2337 transitions. [2022-03-03 17:36:39,917 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 2337 transitions. Word has length 69 [2022-03-03 17:36:39,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:36:39,917 INFO L470 AbstractCegarLoop]: Abstraction has 875 states and 2337 transitions. [2022-03-03 17:36:39,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:39,917 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 2337 transitions. [2022-03-03 17:36:39,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-03 17:36:39,921 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:36:39,921 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:36:39,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-03 17:36:40,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:36:40,125 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:36:40,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:36:40,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1554749941, now seen corresponding path program 7 times [2022-03-03 17:36:40,126 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:36:40,126 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284268285] [2022-03-03 17:36:40,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:36:40,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:36:40,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:36:40,311 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:40,311 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:36:40,311 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284268285] [2022-03-03 17:36:40,311 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284268285] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:36:40,311 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656197775] [2022-03-03 17:36:40,311 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:36:40,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:36:40,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:36:40,312 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:36:40,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-03 17:36:40,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:36:40,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:36:40,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:36:40,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:40,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:36:41,158 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:41,158 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656197775] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:36:41,158 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:36:41,158 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 33 [2022-03-03 17:36:41,159 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521071054] [2022-03-03 17:36:41,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:36:41,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 17:36:41,159 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:36:41,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 17:36:41,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=890, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 17:36:41,160 INFO L87 Difference]: Start difference. First operand 875 states and 2337 transitions. Second operand has 33 states, 33 states have (on average 4.212121212121212) internal successors, (139), 33 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) [2022-03-03 17:36:42,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:36:42,743 INFO L93 Difference]: Finished difference Result 1938 states and 5172 transitions. [2022-03-03 17:36:42,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-03-03 17:36:42,744 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.212121212121212) internal successors, (139), 33 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 69 [2022-03-03 17:36:42,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:36:42,750 INFO L225 Difference]: With dead ends: 1938 [2022-03-03 17:36:42,750 INFO L226 Difference]: Without dead ends: 1887 [2022-03-03 17:36:42,750 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 118 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1382 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=897, Invalid=4073, Unknown=0, NotChecked=0, Total=4970 [2022-03-03 17:36:42,751 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 622 mSDsluCounter, 2265 mSDsCounter, 0 mSdLazyCounter, 1299 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 2313 SdHoareTripleChecker+Invalid, 1395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:36:42,751 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [622 Valid, 2313 Invalid, 1395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1299 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:36:42,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1887 states. [2022-03-03 17:36:42,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1887 to 891. [2022-03-03 17:36:42,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 891 states, 890 states have (on average 2.6932584269662923) internal successors, (2397), 890 states have internal predecessors, (2397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:42,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 2397 transitions. [2022-03-03 17:36:42,768 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 2397 transitions. Word has length 69 [2022-03-03 17:36:42,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:36:42,768 INFO L470 AbstractCegarLoop]: Abstraction has 891 states and 2397 transitions. [2022-03-03 17:36:42,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.212121212121212) internal successors, (139), 33 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) [2022-03-03 17:36:42,768 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 2397 transitions. [2022-03-03 17:36:42,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-03 17:36:42,770 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:36:42,770 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:36:42,788 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-03 17:36:42,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:36:42,988 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:36:42,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:36:42,989 INFO L85 PathProgramCache]: Analyzing trace with hash 880876685, now seen corresponding path program 8 times [2022-03-03 17:36:42,989 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:36:42,989 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661413355] [2022-03-03 17:36:42,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:36:42,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:36:42,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:36:43,166 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:43,166 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:36:43,166 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661413355] [2022-03-03 17:36:43,166 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661413355] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:36:43,166 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537876314] [2022-03-03 17:36:43,166 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:36:43,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:36:43,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:36:43,168 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) [2022-03-03 17:36:43,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-03 17:36:43,216 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:36:43,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:36:43,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:36:43,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:36:43,574 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:43,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:36:44,041 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:44,041 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537876314] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:36:44,041 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:36:44,041 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 33 [2022-03-03 17:36:44,041 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095357969] [2022-03-03 17:36:44,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:36:44,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 17:36:44,042 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:36:44,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 17:36:44,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=887, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 17:36:44,042 INFO L87 Difference]: Start difference. First operand 891 states and 2397 transitions. Second operand has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:45,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:36:45,335 INFO L93 Difference]: Finished difference Result 1788 states and 4789 transitions. [2022-03-03 17:36:45,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-03 17:36:45,336 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-03-03 17:36:45,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:36:45,348 INFO L225 Difference]: With dead ends: 1788 [2022-03-03 17:36:45,348 INFO L226 Difference]: Without dead ends: 1722 [2022-03-03 17:36:45,349 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 118 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1275 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=839, Invalid=3853, Unknown=0, NotChecked=0, Total=4692 [2022-03-03 17:36:45,350 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 709 mSDsluCounter, 1866 mSDsCounter, 0 mSdLazyCounter, 1025 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 1962 SdHoareTripleChecker+Invalid, 1122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:36:45,350 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [709 Valid, 1962 Invalid, 1122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1025 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:36:45,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2022-03-03 17:36:45,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 871. [2022-03-03 17:36:45,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 871 states, 870 states have (on average 2.6735632183908047) internal successors, (2326), 870 states have internal predecessors, (2326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:45,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 871 states to 871 states and 2326 transitions. [2022-03-03 17:36:45,366 INFO L78 Accepts]: Start accepts. Automaton has 871 states and 2326 transitions. Word has length 69 [2022-03-03 17:36:45,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:36:45,367 INFO L470 AbstractCegarLoop]: Abstraction has 871 states and 2326 transitions. [2022-03-03 17:36:45,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:45,367 INFO L276 IsEmpty]: Start isEmpty. Operand 871 states and 2326 transitions. [2022-03-03 17:36:45,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-03 17:36:45,376 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:36:45,376 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:36:45,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-03 17:36:45,595 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,SelfDestructingSolverStorable10 [2022-03-03 17:36:45,595 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:36:45,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:36:45,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1872132149, now seen corresponding path program 9 times [2022-03-03 17:36:45,596 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:36:45,596 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072159528] [2022-03-03 17:36:45,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:36:45,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:36:45,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:36:45,763 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:45,764 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:36:45,764 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072159528] [2022-03-03 17:36:45,764 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072159528] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:36:45,764 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858376349] [2022-03-03 17:36:45,764 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:36:45,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:36:45,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:36:45,776 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) [2022-03-03 17:36:45,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-03 17:36:45,821 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 17:36:45,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:36:45,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:36:45,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:36:46,186 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:46,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:36:46,649 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:46,649 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858376349] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:36:46,649 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:36:46,649 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 33 [2022-03-03 17:36:46,649 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920894684] [2022-03-03 17:36:46,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:36:46,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 17:36:46,650 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:36:46,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 17:36:46,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=883, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 17:36:46,650 INFO L87 Difference]: Start difference. First operand 871 states and 2326 transitions. Second operand has 33 states, 33 states have (on average 4.212121212121212) internal successors, (139), 33 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) [2022-03-03 17:36:48,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:36:48,792 INFO L93 Difference]: Finished difference Result 2062 states and 5485 transitions. [2022-03-03 17:36:48,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-03-03 17:36:48,792 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.212121212121212) internal successors, (139), 33 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 69 [2022-03-03 17:36:48,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:36:48,797 INFO L225 Difference]: With dead ends: 2062 [2022-03-03 17:36:48,797 INFO L226 Difference]: Without dead ends: 2011 [2022-03-03 17:36:48,797 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 118 SyntacticMatches, 2 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1756 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1206, Invalid=4800, Unknown=0, NotChecked=0, Total=6006 [2022-03-03 17:36:48,798 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 780 mSDsluCounter, 2415 mSDsCounter, 0 mSdLazyCounter, 1329 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 2459 SdHoareTripleChecker+Invalid, 1445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:36:48,798 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [780 Valid, 2459 Invalid, 1445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1329 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:36:48,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2011 states. [2022-03-03 17:36:48,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2011 to 887. [2022-03-03 17:36:48,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 887 states, 886 states have (on average 2.6975169300225734) internal successors, (2390), 886 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:48,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 887 states to 887 states and 2390 transitions. [2022-03-03 17:36:48,814 INFO L78 Accepts]: Start accepts. Automaton has 887 states and 2390 transitions. Word has length 69 [2022-03-03 17:36:48,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:36:48,814 INFO L470 AbstractCegarLoop]: Abstraction has 887 states and 2390 transitions. [2022-03-03 17:36:48,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.212121212121212) internal successors, (139), 33 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) [2022-03-03 17:36:48,814 INFO L276 IsEmpty]: Start isEmpty. Operand 887 states and 2390 transitions. [2022-03-03 17:36:48,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-03 17:36:48,816 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:36:48,816 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:36:48,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-03 17:36:49,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:36:49,032 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:36:49,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:36:49,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1198258893, now seen corresponding path program 10 times [2022-03-03 17:36:49,032 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:36:49,032 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725784215] [2022-03-03 17:36:49,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:36:49,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:36:49,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:36:49,201 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:49,201 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:36:49,201 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725784215] [2022-03-03 17:36:49,201 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725784215] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:36:49,201 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767667164] [2022-03-03 17:36:49,201 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:36:49,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:36:49,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:36:49,202 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) [2022-03-03 17:36:49,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-03 17:36:49,244 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:36:49,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:36:49,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:36:49,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:36:49,610 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:49,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:36:50,080 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:50,080 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767667164] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:36:50,080 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:36:50,080 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 33 [2022-03-03 17:36:50,080 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887176653] [2022-03-03 17:36:50,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:36:50,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 17:36:50,081 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:36:50,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 17:36:50,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=880, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 17:36:50,081 INFO L87 Difference]: Start difference. First operand 887 states and 2390 transitions. Second operand has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:51,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:36:51,367 INFO L93 Difference]: Finished difference Result 1772 states and 4693 transitions. [2022-03-03 17:36:51,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-03-03 17:36:51,367 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-03-03 17:36:51,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:36:51,371 INFO L225 Difference]: With dead ends: 1772 [2022-03-03 17:36:51,371 INFO L226 Difference]: Without dead ends: 1706 [2022-03-03 17:36:51,371 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 118 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1017 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=795, Invalid=3111, Unknown=0, NotChecked=0, Total=3906 [2022-03-03 17:36:51,372 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 625 mSDsluCounter, 2251 mSDsCounter, 0 mSdLazyCounter, 1134 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 625 SdHoareTripleChecker+Valid, 2327 SdHoareTripleChecker+Invalid, 1228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:36:51,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [625 Valid, 2327 Invalid, 1228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1134 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:36:51,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1706 states. [2022-03-03 17:36:51,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1706 to 867. [2022-03-03 17:36:51,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 867 states, 866 states have (on average 2.6732101616628174) internal successors, (2315), 866 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:51,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 2315 transitions. [2022-03-03 17:36:51,386 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 2315 transitions. Word has length 69 [2022-03-03 17:36:51,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:36:51,386 INFO L470 AbstractCegarLoop]: Abstraction has 867 states and 2315 transitions. [2022-03-03 17:36:51,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:51,387 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 2315 transitions. [2022-03-03 17:36:51,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-03 17:36:51,388 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:36:51,388 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:36:51,404 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-03-03 17:36:51,596 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,SelfDestructingSolverStorable12 [2022-03-03 17:36:51,596 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:36:51,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:36:51,597 INFO L85 PathProgramCache]: Analyzing trace with hash 48795301, now seen corresponding path program 11 times [2022-03-03 17:36:51,597 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:36:51,597 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649013542] [2022-03-03 17:36:51,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:36:51,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:36:51,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:36:51,629 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:51,629 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:36:51,629 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649013542] [2022-03-03 17:36:51,629 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649013542] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:36:51,629 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025908621] [2022-03-03 17:36:51,629 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:36:51,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:36:51,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:36:51,630 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) [2022-03-03 17:36:51,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-03 17:36:51,675 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 17:36:51,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:36:51,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-03 17:36:51,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:36:51,777 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:51,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:36:51,925 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:51,925 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2025908621] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:36:51,925 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:36:51,925 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2022-03-03 17:36:51,925 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029892503] [2022-03-03 17:36:51,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:36:51,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 17:36:51,925 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:36:51,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 17:36:51,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-03-03 17:36:51,926 INFO L87 Difference]: Start difference. First operand 867 states and 2315 transitions. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 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) [2022-03-03 17:36:51,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:36:51,955 INFO L93 Difference]: Finished difference Result 890 states and 2337 transitions. [2022-03-03 17:36:51,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-03 17:36:51,955 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 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 69 [2022-03-03 17:36:51,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:36:51,957 INFO L225 Difference]: With dead ends: 890 [2022-03-03 17:36:51,957 INFO L226 Difference]: Without dead ends: 890 [2022-03-03 17:36:51,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 133 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-03-03 17:36:51,957 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 25 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:36:51,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 258 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:36:51,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2022-03-03 17:36:51,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 812. [2022-03-03 17:36:51,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812 states, 811 states have (on average 2.62268803945746) internal successors, (2127), 811 states have internal predecessors, (2127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:51,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 2127 transitions. [2022-03-03 17:36:51,968 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 2127 transitions. Word has length 69 [2022-03-03 17:36:51,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:36:51,969 INFO L470 AbstractCegarLoop]: Abstraction has 812 states and 2127 transitions. [2022-03-03 17:36:51,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 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) [2022-03-03 17:36:51,969 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 2127 transitions. [2022-03-03 17:36:51,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-03 17:36:51,970 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:36:51,970 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:36:51,988 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-03-03 17:36:52,186 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,SelfDestructingSolverStorable13 [2022-03-03 17:36:52,187 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:36:52,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:36:52,187 INFO L85 PathProgramCache]: Analyzing trace with hash -908930907, now seen corresponding path program 12 times [2022-03-03 17:36:52,187 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:36:52,187 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175447467] [2022-03-03 17:36:52,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:36:52,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:36:52,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:36:52,366 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:52,367 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:36:52,367 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175447467] [2022-03-03 17:36:52,367 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175447467] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:36:52,367 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800383682] [2022-03-03 17:36:52,367 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:36:52,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:36:52,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:36:52,368 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) [2022-03-03 17:36:52,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-03-03 17:36:52,418 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-03 17:36:52,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:36:52,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 17:36:52,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:36:52,943 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:52,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:36:53,679 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:53,679 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800383682] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:36:53,679 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:36:53,679 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 17] total 38 [2022-03-03 17:36:53,679 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193988676] [2022-03-03 17:36:53,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:36:53,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-03-03 17:36:53,680 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:36:53,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-03-03 17:36:53,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=1177, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 17:36:53,680 INFO L87 Difference]: Start difference. First operand 812 states and 2127 transitions. Second operand has 38 states, 38 states have (on average 4.052631578947368) internal successors, (154), 38 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:56,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:36:56,419 INFO L93 Difference]: Finished difference Result 2429 states and 6136 transitions. [2022-03-03 17:36:56,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-03-03 17:36:56,424 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 4.052631578947368) internal successors, (154), 38 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-03-03 17:36:56,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:36:56,428 INFO L225 Difference]: With dead ends: 2429 [2022-03-03 17:36:56,428 INFO L226 Difference]: Without dead ends: 2276 [2022-03-03 17:36:56,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2787 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1779, Invalid=7533, Unknown=0, NotChecked=0, Total=9312 [2022-03-03 17:36:56,429 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 1254 mSDsluCounter, 2535 mSDsCounter, 0 mSdLazyCounter, 1374 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1254 SdHoareTripleChecker+Valid, 2496 SdHoareTripleChecker+Invalid, 1508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:36:56,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1254 Valid, 2496 Invalid, 1508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1374 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:36:56,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2276 states. [2022-03-03 17:36:56,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2276 to 924. [2022-03-03 17:36:56,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 924 states, 923 states have (on average 2.6901408450704225) internal successors, (2483), 923 states have internal predecessors, (2483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:56,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 2483 transitions. [2022-03-03 17:36:56,446 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 2483 transitions. Word has length 69 [2022-03-03 17:36:56,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:36:56,447 INFO L470 AbstractCegarLoop]: Abstraction has 924 states and 2483 transitions. [2022-03-03 17:36:56,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 4.052631578947368) internal successors, (154), 38 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:56,447 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 2483 transitions. [2022-03-03 17:36:56,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-03 17:36:56,448 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:36:56,448 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:36:56,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-03-03 17:36:56,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-03-03 17:36:56,650 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:36:56,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:36:56,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1582804163, now seen corresponding path program 13 times [2022-03-03 17:36:56,650 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:36:56,650 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313394144] [2022-03-03 17:36:56,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:36:56,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:36:56,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:36:56,825 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:56,825 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:36:56,826 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313394144] [2022-03-03 17:36:56,826 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313394144] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:36:56,826 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117288516] [2022-03-03 17:36:56,826 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:36:56,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:36:56,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:36:56,827 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) [2022-03-03 17:36:56,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-03-03 17:36:56,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:36:56,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:36:56,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:36:57,197 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:57,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:36:57,677 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:57,677 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117288516] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:36:57,678 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:36:57,678 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-03-03 17:36:57,678 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970157702] [2022-03-03 17:36:57,678 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:36:57,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-03 17:36:57,678 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:36:57,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-03 17:36:57,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=774, Unknown=0, NotChecked=0, Total=930 [2022-03-03 17:36:57,679 INFO L87 Difference]: Start difference. First operand 924 states and 2483 transitions. Second operand has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:59,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:36:59,840 INFO L93 Difference]: Finished difference Result 2468 states and 6446 transitions. [2022-03-03 17:36:59,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-03-03 17:36:59,840 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-03-03 17:36:59,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:36:59,845 INFO L225 Difference]: With dead ends: 2468 [2022-03-03 17:36:59,845 INFO L226 Difference]: Without dead ends: 2240 [2022-03-03 17:36:59,845 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 119 SyntacticMatches, 3 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1724 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1135, Invalid=4871, Unknown=0, NotChecked=0, Total=6006 [2022-03-03 17:36:59,846 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 879 mSDsluCounter, 2407 mSDsCounter, 0 mSdLazyCounter, 1408 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 879 SdHoareTripleChecker+Valid, 2454 SdHoareTripleChecker+Invalid, 1504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:36:59,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [879 Valid, 2454 Invalid, 1504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1408 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:36:59,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2240 states. [2022-03-03 17:36:59,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2240 to 1068. [2022-03-03 17:36:59,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1068 states, 1067 states have (on average 2.7544517338331773) internal successors, (2939), 1067 states have internal predecessors, (2939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:59,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 2939 transitions. [2022-03-03 17:36:59,865 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 2939 transitions. Word has length 69 [2022-03-03 17:36:59,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:36:59,865 INFO L470 AbstractCegarLoop]: Abstraction has 1068 states and 2939 transitions. [2022-03-03 17:36:59,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:59,865 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 2939 transitions. [2022-03-03 17:36:59,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-03 17:36:59,867 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:36:59,867 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:36:59,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-03-03 17:37:00,079 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,SelfDestructingSolverStorable15 [2022-03-03 17:37:00,079 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:37:00,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:37:00,080 INFO L85 PathProgramCache]: Analyzing trace with hash -343361627, now seen corresponding path program 14 times [2022-03-03 17:37:00,080 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:37:00,080 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517316090] [2022-03-03 17:37:00,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:37:00,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:37:00,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:37:00,250 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:00,250 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:37:00,250 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517316090] [2022-03-03 17:37:00,250 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517316090] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:37:00,250 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42519308] [2022-03-03 17:37:00,250 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:37:00,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:37:00,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:37:00,252 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) [2022-03-03 17:37:00,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-03-03 17:37:00,296 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:37:00,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:37:00,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:37:00,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:37:00,635 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:00,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:37:01,107 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:01,107 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42519308] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:37:01,107 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:37:01,107 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-03-03 17:37:01,107 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070734511] [2022-03-03 17:37:01,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:37:01,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-03 17:37:01,108 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:37:01,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-03 17:37:01,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=791, Unknown=0, NotChecked=0, Total=930 [2022-03-03 17:37:01,108 INFO L87 Difference]: Start difference. First operand 1068 states and 2939 transitions. Second operand has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:02,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:37:02,899 INFO L93 Difference]: Finished difference Result 2026 states and 5403 transitions. [2022-03-03 17:37:02,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-03-03 17:37:02,900 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-03-03 17:37:02,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:37:02,909 INFO L225 Difference]: With dead ends: 2026 [2022-03-03 17:37:02,909 INFO L226 Difference]: Without dead ends: 1924 [2022-03-03 17:37:02,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 119 SyntacticMatches, 3 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1191 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=854, Invalid=3838, Unknown=0, NotChecked=0, Total=4692 [2022-03-03 17:37:02,910 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 563 mSDsluCounter, 2044 mSDsCounter, 0 mSdLazyCounter, 1122 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 563 SdHoareTripleChecker+Valid, 2080 SdHoareTripleChecker+Invalid, 1204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:37:02,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [563 Valid, 2080 Invalid, 1204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1122 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:37:02,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1924 states. [2022-03-03 17:37:02,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1924 to 1064. [2022-03-03 17:37:02,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1064 states, 1063 states have (on average 2.750705550329257) internal successors, (2924), 1063 states have internal predecessors, (2924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:02,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1064 states to 1064 states and 2924 transitions. [2022-03-03 17:37:02,940 INFO L78 Accepts]: Start accepts. Automaton has 1064 states and 2924 transitions. Word has length 69 [2022-03-03 17:37:02,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:37:02,940 INFO L470 AbstractCegarLoop]: Abstraction has 1064 states and 2924 transitions. [2022-03-03 17:37:02,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:02,940 INFO L276 IsEmpty]: Start isEmpty. Operand 1064 states and 2924 transitions. [2022-03-03 17:37:02,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-03 17:37:02,942 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:37:02,942 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:37:02,961 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-03-03 17:37:03,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:37:03,156 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:37:03,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:37:03,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1942125631, now seen corresponding path program 15 times [2022-03-03 17:37:03,157 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:37:03,157 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434011385] [2022-03-03 17:37:03,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:37:03,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:37:03,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:37:03,328 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:03,328 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:37:03,328 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434011385] [2022-03-03 17:37:03,328 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434011385] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:37:03,328 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942343377] [2022-03-03 17:37:03,328 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:37:03,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:37:03,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:37:03,330 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) [2022-03-03 17:37:03,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-03-03 17:37:03,375 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 17:37:03,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:37:03,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:37:03,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:37:03,699 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:03,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:37:04,152 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:04,152 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942343377] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:37:04,152 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:37:04,153 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-03-03 17:37:04,153 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716736149] [2022-03-03 17:37:04,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:37:04,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-03 17:37:04,153 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:37:04,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-03 17:37:04,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=771, Unknown=0, NotChecked=0, Total=930 [2022-03-03 17:37:04,154 INFO L87 Difference]: Start difference. First operand 1064 states and 2924 transitions. Second operand has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:04,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:37:04,783 INFO L93 Difference]: Finished difference Result 1621 states and 4399 transitions. [2022-03-03 17:37:04,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-03 17:37:04,784 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-03-03 17:37:04,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:37:04,787 INFO L225 Difference]: With dead ends: 1621 [2022-03-03 17:37:04,787 INFO L226 Difference]: Without dead ends: 1570 [2022-03-03 17:37:04,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 119 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 494 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=391, Invalid=1501, Unknown=0, NotChecked=0, Total=1892 [2022-03-03 17:37:04,788 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 325 mSDsluCounter, 1924 mSDsCounter, 0 mSdLazyCounter, 931 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 1959 SdHoareTripleChecker+Invalid, 974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:37:04,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [325 Valid, 1959 Invalid, 974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 931 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:37:04,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1570 states. [2022-03-03 17:37:04,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1570 to 1060. [2022-03-03 17:37:04,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1060 states, 1059 states have (on average 2.7469310670443816) internal successors, (2909), 1059 states have internal predecessors, (2909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:04,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1060 states to 1060 states and 2909 transitions. [2022-03-03 17:37:04,804 INFO L78 Accepts]: Start accepts. Automaton has 1060 states and 2909 transitions. Word has length 69 [2022-03-03 17:37:04,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:37:04,804 INFO L470 AbstractCegarLoop]: Abstraction has 1060 states and 2909 transitions. [2022-03-03 17:37:04,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:04,804 INFO L276 IsEmpty]: Start isEmpty. Operand 1060 states and 2909 transitions. [2022-03-03 17:37:04,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-03 17:37:04,805 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:37:04,805 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:37:04,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-03-03 17:37:05,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-03-03 17:37:05,019 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:37:05,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:37:05,020 INFO L85 PathProgramCache]: Analyzing trace with hash -2019223453, now seen corresponding path program 16 times [2022-03-03 17:37:05,020 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:37:05,020 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067430801] [2022-03-03 17:37:05,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:37:05,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:37:05,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:37:05,168 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:05,169 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:37:05,169 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067430801] [2022-03-03 17:37:05,169 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067430801] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:37:05,169 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1101030244] [2022-03-03 17:37:05,169 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:37:05,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:37:05,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:37:05,170 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) [2022-03-03 17:37:05,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-03-03 17:37:05,220 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:37:05,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:37:05,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:37:05,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:37:05,574 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:05,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:37:05,980 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:05,980 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1101030244] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:37:05,980 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:37:05,980 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-03-03 17:37:05,980 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792421139] [2022-03-03 17:37:05,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:37:05,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-03 17:37:05,980 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:37:05,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-03 17:37:05,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=827, Unknown=0, NotChecked=0, Total=992 [2022-03-03 17:37:05,981 INFO L87 Difference]: Start difference. First operand 1060 states and 2909 transitions. Second operand has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:08,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:37:08,811 INFO L93 Difference]: Finished difference Result 2839 states and 7556 transitions. [2022-03-03 17:37:08,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-03-03 17:37:08,811 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-03-03 17:37:08,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:37:08,817 INFO L225 Difference]: With dead ends: 2839 [2022-03-03 17:37:08,817 INFO L226 Difference]: Without dead ends: 2692 [2022-03-03 17:37:08,818 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2884 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1699, Invalid=7231, Unknown=0, NotChecked=0, Total=8930 [2022-03-03 17:37:08,818 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 826 mSDsluCounter, 2451 mSDsCounter, 0 mSdLazyCounter, 1368 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 2512 SdHoareTripleChecker+Invalid, 1474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:37:08,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [826 Valid, 2512 Invalid, 1474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1368 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:37:08,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2692 states. [2022-03-03 17:37:08,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2692 to 1172. [2022-03-03 17:37:08,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1172 states, 1171 states have (on average 2.788215200683177) internal successors, (3265), 1171 states have internal predecessors, (3265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:08,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 3265 transitions. [2022-03-03 17:37:08,843 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 3265 transitions. Word has length 69 [2022-03-03 17:37:08,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:37:08,843 INFO L470 AbstractCegarLoop]: Abstraction has 1172 states and 3265 transitions. [2022-03-03 17:37:08,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:08,843 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 3265 transitions. [2022-03-03 17:37:08,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-03 17:37:08,845 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:37:08,845 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:37:08,861 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-03-03 17:37:09,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:37:09,059 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:37:09,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:37:09,060 INFO L85 PathProgramCache]: Analyzing trace with hash -205219233, now seen corresponding path program 17 times [2022-03-03 17:37:09,060 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:37:09,060 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360758850] [2022-03-03 17:37:09,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:37:09,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:37:09,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:37:09,232 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:09,232 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:37:09,232 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360758850] [2022-03-03 17:37:09,232 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360758850] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:37:09,232 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803552069] [2022-03-03 17:37:09,232 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:37:09,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:37:09,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:37:09,236 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) [2022-03-03 17:37:09,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-03-03 17:37:09,287 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:37:09,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:37:09,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:37:09,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:37:09,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:09,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:37:10,069 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:10,069 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1803552069] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:37:10,069 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:37:10,069 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-03-03 17:37:10,069 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116999442] [2022-03-03 17:37:10,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:37:10,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-03 17:37:10,070 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:37:10,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-03 17:37:10,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=832, Unknown=0, NotChecked=0, Total=992 [2022-03-03 17:37:10,070 INFO L87 Difference]: Start difference. First operand 1172 states and 3265 transitions. Second operand has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:11,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:37:11,613 INFO L93 Difference]: Finished difference Result 2465 states and 6507 transitions. [2022-03-03 17:37:11,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-03-03 17:37:11,613 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-03-03 17:37:11,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:37:11,617 INFO L225 Difference]: With dead ends: 2465 [2022-03-03 17:37:11,617 INFO L226 Difference]: Without dead ends: 2258 [2022-03-03 17:37:11,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1768 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=989, Invalid=5017, Unknown=0, NotChecked=0, Total=6006 [2022-03-03 17:37:11,618 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 583 mSDsluCounter, 2627 mSDsCounter, 0 mSdLazyCounter, 1318 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 2671 SdHoareTripleChecker+Invalid, 1377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:37:11,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [583 Valid, 2671 Invalid, 1377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1318 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:37:11,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2258 states. [2022-03-03 17:37:11,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2258 to 1172. [2022-03-03 17:37:11,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1172 states, 1171 states have (on average 2.774551665243382) internal successors, (3249), 1171 states have internal predecessors, (3249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:11,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 3249 transitions. [2022-03-03 17:37:11,646 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 3249 transitions. Word has length 69 [2022-03-03 17:37:11,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:37:11,646 INFO L470 AbstractCegarLoop]: Abstraction has 1172 states and 3249 transitions. [2022-03-03 17:37:11,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:11,646 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 3249 transitions. [2022-03-03 17:37:11,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-03 17:37:11,648 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:37:11,648 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:37:11,669 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-03-03 17:37:11,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:37:11,865 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:37:11,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:37:11,865 INFO L85 PathProgramCache]: Analyzing trace with hash 464520227, now seen corresponding path program 18 times [2022-03-03 17:37:11,865 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:37:11,865 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750087801] [2022-03-03 17:37:11,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:37:11,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:37:11,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:37:12,019 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:12,019 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:37:12,019 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750087801] [2022-03-03 17:37:12,019 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750087801] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:37:12,019 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252084095] [2022-03-03 17:37:12,019 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:37:12,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:37:12,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:37:12,020 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) [2022-03-03 17:37:12,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-03-03 17:37:12,073 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 17:37:12,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:37:12,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:37:12,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:37:12,441 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:12,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:37:12,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:12,915 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252084095] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:37:12,915 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:37:12,915 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-03-03 17:37:12,915 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708401895] [2022-03-03 17:37:12,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:37:12,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-03 17:37:12,915 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:37:12,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-03 17:37:12,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=833, Unknown=0, NotChecked=0, Total=992 [2022-03-03 17:37:12,916 INFO L87 Difference]: Start difference. First operand 1172 states and 3249 transitions. Second operand has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:14,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:37:14,216 INFO L93 Difference]: Finished difference Result 2091 states and 5680 transitions. [2022-03-03 17:37:14,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-03-03 17:37:14,216 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-03-03 17:37:14,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:37:14,219 INFO L225 Difference]: With dead ends: 2091 [2022-03-03 17:37:14,219 INFO L226 Difference]: Without dead ends: 2025 [2022-03-03 17:37:14,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1020 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=729, Invalid=3303, Unknown=0, NotChecked=0, Total=4032 [2022-03-03 17:37:14,220 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 454 mSDsluCounter, 2281 mSDsCounter, 0 mSdLazyCounter, 1249 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 2351 SdHoareTripleChecker+Invalid, 1324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:37:14,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [454 Valid, 2351 Invalid, 1324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1249 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:37:14,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2025 states. [2022-03-03 17:37:14,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2025 to 1180. [2022-03-03 17:37:14,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1180 states, 1179 states have (on average 2.7777777777777777) internal successors, (3275), 1179 states have internal predecessors, (3275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:14,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 3275 transitions. [2022-03-03 17:37:14,238 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 3275 transitions. Word has length 69 [2022-03-03 17:37:14,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:37:14,238 INFO L470 AbstractCegarLoop]: Abstraction has 1180 states and 3275 transitions. [2022-03-03 17:37:14,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:14,238 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 3275 transitions. [2022-03-03 17:37:14,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-03 17:37:14,239 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:37:14,240 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:37:14,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-03-03 17:37:14,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:37:14,455 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:37:14,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:37:14,456 INFO L85 PathProgramCache]: Analyzing trace with hash -956181783, now seen corresponding path program 19 times [2022-03-03 17:37:14,456 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:37:14,456 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486853885] [2022-03-03 17:37:14,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:37:14,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:37:14,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:37:14,612 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:14,613 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:37:14,613 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486853885] [2022-03-03 17:37:14,613 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486853885] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:37:14,613 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902118942] [2022-03-03 17:37:14,613 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:37:14,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:37:14,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:37:14,614 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) [2022-03-03 17:37:14,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-03-03 17:37:14,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:37:14,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:37:14,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:37:15,004 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:15,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:37:15,433 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:15,434 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902118942] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:37:15,434 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:37:15,434 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-03-03 17:37:15,434 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491724592] [2022-03-03 17:37:15,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:37:15,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-03 17:37:15,434 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:37:15,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-03 17:37:15,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=843, Unknown=0, NotChecked=0, Total=992 [2022-03-03 17:37:15,435 INFO L87 Difference]: Start difference. First operand 1180 states and 3275 transitions. Second operand has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:16,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:37:16,470 INFO L93 Difference]: Finished difference Result 2014 states and 5484 transitions. [2022-03-03 17:37:16,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-03 17:37:16,470 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-03-03 17:37:16,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:37:16,473 INFO L225 Difference]: With dead ends: 2014 [2022-03-03 17:37:16,474 INFO L226 Difference]: Without dead ends: 1963 [2022-03-03 17:37:16,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 820 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=560, Invalid=2746, Unknown=0, NotChecked=0, Total=3306 [2022-03-03 17:37:16,474 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 411 mSDsluCounter, 2081 mSDsCounter, 0 mSdLazyCounter, 1133 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 2125 SdHoareTripleChecker+Invalid, 1197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:37:16,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [411 Valid, 2125 Invalid, 1197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1133 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:37:16,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1963 states. [2022-03-03 17:37:16,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1963 to 1176. [2022-03-03 17:37:16,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1176 states, 1175 states have (on average 2.774468085106383) internal successors, (3260), 1175 states have internal predecessors, (3260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:16,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1176 states to 1176 states and 3260 transitions. [2022-03-03 17:37:16,508 INFO L78 Accepts]: Start accepts. Automaton has 1176 states and 3260 transitions. Word has length 69 [2022-03-03 17:37:16,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:37:16,508 INFO L470 AbstractCegarLoop]: Abstraction has 1176 states and 3260 transitions. [2022-03-03 17:37:16,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:16,508 INFO L276 IsEmpty]: Start isEmpty. Operand 1176 states and 3260 transitions. [2022-03-03 17:37:16,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-03 17:37:16,509 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:37:16,510 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:37:16,525 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-03-03 17:37:16,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:37:16,710 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:37:16,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:37:16,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1313391633, now seen corresponding path program 20 times [2022-03-03 17:37:16,711 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:37:16,711 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561725174] [2022-03-03 17:37:16,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:37:16,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:37:16,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:37:16,889 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:16,889 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:37:16,889 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561725174] [2022-03-03 17:37:16,889 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561725174] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:37:16,889 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164207204] [2022-03-03 17:37:16,889 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:37:16,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:37:16,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:37:16,891 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) [2022-03-03 17:37:16,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-03-03 17:37:16,942 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:37:16,942 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:37:16,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:37:16,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:37:17,303 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:17,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:37:17,745 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:17,745 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164207204] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:37:17,745 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:37:17,746 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-03-03 17:37:17,746 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132292566] [2022-03-03 17:37:17,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:37:17,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-03 17:37:17,746 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:37:17,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-03 17:37:17,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=832, Unknown=0, NotChecked=0, Total=992 [2022-03-03 17:37:17,746 INFO L87 Difference]: Start difference. First operand 1176 states and 3260 transitions. Second operand has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:18,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:37:18,889 INFO L93 Difference]: Finished difference Result 2014 states and 5492 transitions. [2022-03-03 17:37:18,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-03 17:37:18,889 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-03-03 17:37:18,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:37:18,892 INFO L225 Difference]: With dead ends: 2014 [2022-03-03 17:37:18,892 INFO L226 Difference]: Without dead ends: 1948 [2022-03-03 17:37:18,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 816 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=677, Invalid=2629, Unknown=0, NotChecked=0, Total=3306 [2022-03-03 17:37:18,893 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 420 mSDsluCounter, 2194 mSDsCounter, 0 mSdLazyCounter, 1188 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 2250 SdHoareTripleChecker+Invalid, 1263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:37:18,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [420 Valid, 2250 Invalid, 1263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1188 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:37:18,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1948 states. [2022-03-03 17:37:18,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1948 to 1184. [2022-03-03 17:37:18,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1184 states, 1183 states have (on average 2.7810650887573964) internal successors, (3290), 1183 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:18,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1184 states to 1184 states and 3290 transitions. [2022-03-03 17:37:18,910 INFO L78 Accepts]: Start accepts. Automaton has 1184 states and 3290 transitions. Word has length 69 [2022-03-03 17:37:18,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:37:18,910 INFO L470 AbstractCegarLoop]: Abstraction has 1184 states and 3290 transitions. [2022-03-03 17:37:18,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:18,910 INFO L276 IsEmpty]: Start isEmpty. Operand 1184 states and 3290 transitions. [2022-03-03 17:37:18,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-03 17:37:18,911 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:37:18,911 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:37:18,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-03-03 17:37:19,112 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,SelfDestructingSolverStorable22 [2022-03-03 17:37:19,112 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:37:19,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:37:19,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1560873653, now seen corresponding path program 21 times [2022-03-03 17:37:19,112 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:37:19,113 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947785758] [2022-03-03 17:37:19,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:37:19,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:37:19,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:37:19,275 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:19,275 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:37:19,275 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947785758] [2022-03-03 17:37:19,275 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947785758] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:37:19,275 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197894347] [2022-03-03 17:37:19,275 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:37:19,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:37:19,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:37:19,277 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) [2022-03-03 17:37:19,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-03-03 17:37:19,331 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 17:37:19,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:37:19,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:37:19,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:37:19,694 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:19,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:37:20,129 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:20,129 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197894347] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:37:20,129 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:37:20,129 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-03-03 17:37:20,129 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944866490] [2022-03-03 17:37:20,129 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:37:20,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-03 17:37:20,129 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:37:20,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-03 17:37:20,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=846, Unknown=0, NotChecked=0, Total=992 [2022-03-03 17:37:20,130 INFO L87 Difference]: Start difference. First operand 1184 states and 3290 transitions. Second operand has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:21,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:37:21,978 INFO L93 Difference]: Finished difference Result 2258 states and 6093 transitions. [2022-03-03 17:37:21,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-03-03 17:37:21,978 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-03-03 17:37:21,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:37:21,981 INFO L225 Difference]: With dead ends: 2258 [2022-03-03 17:37:21,981 INFO L226 Difference]: Without dead ends: 2156 [2022-03-03 17:37:21,982 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1277 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=876, Invalid=4094, Unknown=0, NotChecked=0, Total=4970 [2022-03-03 17:37:21,982 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 580 mSDsluCounter, 2370 mSDsCounter, 0 mSdLazyCounter, 1319 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 580 SdHoareTripleChecker+Valid, 2424 SdHoareTripleChecker+Invalid, 1399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:37:21,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [580 Valid, 2424 Invalid, 1399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1319 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:37:21,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2156 states. [2022-03-03 17:37:21,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2156 to 1176. [2022-03-03 17:37:21,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1176 states, 1175 states have (on average 2.777872340425532) internal successors, (3264), 1175 states have internal predecessors, (3264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:21,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1176 states to 1176 states and 3264 transitions. [2022-03-03 17:37:21,998 INFO L78 Accepts]: Start accepts. Automaton has 1176 states and 3264 transitions. Word has length 69 [2022-03-03 17:37:21,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:37:21,998 INFO L470 AbstractCegarLoop]: Abstraction has 1176 states and 3264 transitions. [2022-03-03 17:37:21,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:21,999 INFO L276 IsEmpty]: Start isEmpty. Operand 1176 states and 3264 transitions. [2022-03-03 17:37:22,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-03 17:37:22,000 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:37:22,000 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:37:22,016 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-03-03 17:37:22,203 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,SelfDestructingSolverStorable23 [2022-03-03 17:37:22,203 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:37:22,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:37:22,204 INFO L85 PathProgramCache]: Analyzing trace with hash -448606385, now seen corresponding path program 22 times [2022-03-03 17:37:22,204 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:37:22,204 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328043286] [2022-03-03 17:37:22,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:37:22,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:37:22,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:37:22,373 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:22,373 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:37:22,373 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328043286] [2022-03-03 17:37:22,373 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328043286] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:37:22,373 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465817000] [2022-03-03 17:37:22,373 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:37:22,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:37:22,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:37:22,374 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) [2022-03-03 17:37:22,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-03-03 17:37:22,420 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:37:22,421 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:37:22,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:37:22,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:37:22,773 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:22,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:37:23,193 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:23,194 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465817000] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:37:23,194 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:37:23,194 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-03-03 17:37:23,194 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166315181] [2022-03-03 17:37:23,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:37:23,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-03 17:37:23,194 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:37:23,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-03 17:37:23,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=826, Unknown=0, NotChecked=0, Total=992 [2022-03-03 17:37:23,195 INFO L87 Difference]: Start difference. First operand 1176 states and 3264 transitions. Second operand has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:23,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:37:23,788 INFO L93 Difference]: Finished difference Result 1749 states and 4783 transitions. [2022-03-03 17:37:23,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-03-03 17:37:23,789 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-03-03 17:37:23,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:37:23,791 INFO L225 Difference]: With dead ends: 1749 [2022-03-03 17:37:23,791 INFO L226 Difference]: Without dead ends: 1698 [2022-03-03 17:37:23,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 556 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=419, Invalid=1651, Unknown=0, NotChecked=0, Total=2070 [2022-03-03 17:37:23,792 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 348 mSDsluCounter, 1613 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 1669 SdHoareTripleChecker+Invalid, 855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:37:23,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [348 Valid, 1669 Invalid, 855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:37:23,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1698 states. [2022-03-03 17:37:23,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1698 to 1172. [2022-03-03 17:37:23,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1172 states, 1171 states have (on average 2.774551665243382) internal successors, (3249), 1171 states have internal predecessors, (3249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:23,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 3249 transitions. [2022-03-03 17:37:23,808 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 3249 transitions. Word has length 69 [2022-03-03 17:37:23,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:37:23,808 INFO L470 AbstractCegarLoop]: Abstraction has 1172 states and 3249 transitions. [2022-03-03 17:37:23,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:23,808 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 3249 transitions. [2022-03-03 17:37:23,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-03 17:37:23,810 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:37:23,810 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:37:23,826 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-03-03 17:37:24,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:37:24,010 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:37:24,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:37:24,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1704619901, now seen corresponding path program 23 times [2022-03-03 17:37:24,011 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:37:24,011 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422118395] [2022-03-03 17:37:24,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:37:24,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:37:24,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:37:24,177 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:24,177 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:37:24,178 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422118395] [2022-03-03 17:37:24,178 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422118395] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:37:24,178 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024960896] [2022-03-03 17:37:24,178 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:37:24,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:37:24,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:37:24,179 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) [2022-03-03 17:37:24,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-03-03 17:37:24,232 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 17:37:24,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:37:24,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:37:24,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:37:24,544 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:24,545 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:37:24,949 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:24,950 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1024960896] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:37:24,950 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:37:24,950 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-03-03 17:37:24,950 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351211776] [2022-03-03 17:37:24,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:37:24,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-03 17:37:24,950 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:37:24,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-03 17:37:24,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=775, Unknown=0, NotChecked=0, Total=930 [2022-03-03 17:37:24,951 INFO L87 Difference]: Start difference. First operand 1172 states and 3249 transitions. Second operand has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:26,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:37:26,917 INFO L93 Difference]: Finished difference Result 2791 states and 7406 transitions. [2022-03-03 17:37:26,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-03-03 17:37:26,917 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-03-03 17:37:26,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:37:26,921 INFO L225 Difference]: With dead ends: 2791 [2022-03-03 17:37:26,921 INFO L226 Difference]: Without dead ends: 2512 [2022-03-03 17:37:26,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 120 SyntacticMatches, 2 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1929 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1200, Invalid=5442, Unknown=0, NotChecked=0, Total=6642 [2022-03-03 17:37:26,922 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 1028 mSDsluCounter, 2079 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1028 SdHoareTripleChecker+Valid, 2147 SdHoareTripleChecker+Invalid, 1297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:37:26,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1028 Valid, 2147 Invalid, 1297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1186 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:37:26,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2512 states. [2022-03-03 17:37:26,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2512 to 1356. [2022-03-03 17:37:26,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1356 states, 1355 states have (on average 2.8243542435424356) internal successors, (3827), 1355 states have internal predecessors, (3827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:26,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1356 states to 1356 states and 3827 transitions. [2022-03-03 17:37:26,950 INFO L78 Accepts]: Start accepts. Automaton has 1356 states and 3827 transitions. Word has length 69 [2022-03-03 17:37:26,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:37:26,950 INFO L470 AbstractCegarLoop]: Abstraction has 1356 states and 3827 transitions. [2022-03-03 17:37:26,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:26,950 INFO L276 IsEmpty]: Start isEmpty. Operand 1356 states and 3827 transitions. [2022-03-03 17:37:26,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-03 17:37:26,952 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:37:26,952 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:37:26,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-03-03 17:37:27,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:37:27,155 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:37:27,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:37:27,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1350904859, now seen corresponding path program 24 times [2022-03-03 17:37:27,156 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:37:27,156 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209076870] [2022-03-03 17:37:27,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:37:27,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:37:27,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:37:27,328 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:27,329 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:37:27,329 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209076870] [2022-03-03 17:37:27,329 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209076870] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:37:27,329 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891035073] [2022-03-03 17:37:27,329 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:37:27,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:37:27,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:37:27,330 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) [2022-03-03 17:37:27,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-03-03 17:37:27,381 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 17:37:27,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:37:27,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:37:27,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:37:27,693 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:27,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:37:28,085 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:28,086 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891035073] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:37:28,086 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:37:28,086 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-03-03 17:37:28,086 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018491462] [2022-03-03 17:37:28,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:37:28,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-03 17:37:28,086 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:37:28,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-03 17:37:28,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=791, Unknown=0, NotChecked=0, Total=930 [2022-03-03 17:37:28,087 INFO L87 Difference]: Start difference. First operand 1356 states and 3827 transitions. Second operand has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:30,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:37:30,637 INFO L93 Difference]: Finished difference Result 3128 states and 8471 transitions. [2022-03-03 17:37:30,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-03-03 17:37:30,637 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-03-03 17:37:30,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:37:30,642 INFO L225 Difference]: With dead ends: 3128 [2022-03-03 17:37:30,642 INFO L226 Difference]: Without dead ends: 2975 [2022-03-03 17:37:30,642 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 120 SyntacticMatches, 2 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2472 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1264, Invalid=6926, Unknown=0, NotChecked=0, Total=8190 [2022-03-03 17:37:30,643 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 816 mSDsluCounter, 2610 mSDsCounter, 0 mSdLazyCounter, 1355 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 816 SdHoareTripleChecker+Valid, 2627 SdHoareTripleChecker+Invalid, 1482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:37:30,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [816 Valid, 2627 Invalid, 1482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1355 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:37:30,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2975 states. [2022-03-03 17:37:30,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2975 to 1572. [2022-03-03 17:37:30,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1572 states, 1571 states have (on average 2.872692552514322) internal successors, (4513), 1571 states have internal predecessors, (4513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:30,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 4513 transitions. [2022-03-03 17:37:30,667 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 4513 transitions. Word has length 69 [2022-03-03 17:37:30,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:37:30,667 INFO L470 AbstractCegarLoop]: Abstraction has 1572 states and 4513 transitions. [2022-03-03 17:37:30,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:30,667 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 4513 transitions. [2022-03-03 17:37:30,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-03 17:37:30,670 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:37:30,670 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:37:30,685 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-03-03 17:37:30,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-03-03 17:37:30,870 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:37:30,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:37:30,870 INFO L85 PathProgramCache]: Analyzing trace with hash 934582399, now seen corresponding path program 25 times [2022-03-03 17:37:30,871 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:37:30,871 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316654430] [2022-03-03 17:37:30,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:37:30,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:37:30,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:37:31,051 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:31,051 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:37:31,051 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316654430] [2022-03-03 17:37:31,051 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316654430] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:37:31,051 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138516159] [2022-03-03 17:37:31,051 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:37:31,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:37:31,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:37:31,052 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) [2022-03-03 17:37:31,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-03-03 17:37:31,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:37:31,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:37:31,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:37:31,425 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:31,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:37:31,848 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:31,848 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138516159] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:37:31,848 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:37:31,849 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-03-03 17:37:31,849 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556867844] [2022-03-03 17:37:31,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:37:31,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-03 17:37:31,849 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:37:31,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-03 17:37:31,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=775, Unknown=0, NotChecked=0, Total=930 [2022-03-03 17:37:31,849 INFO L87 Difference]: Start difference. First operand 1572 states and 4513 transitions. Second operand has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:32,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:37:32,487 INFO L93 Difference]: Finished difference Result 2317 states and 6471 transitions. [2022-03-03 17:37:32,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-03-03 17:37:32,489 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-03-03 17:37:32,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:37:32,493 INFO L225 Difference]: With dead ends: 2317 [2022-03-03 17:37:32,493 INFO L226 Difference]: Without dead ends: 2266 [2022-03-03 17:37:32,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 119 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 539 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=406, Invalid=1664, Unknown=0, NotChecked=0, Total=2070 [2022-03-03 17:37:32,493 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 380 mSDsluCounter, 1612 mSDsCounter, 0 mSdLazyCounter, 771 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 1669 SdHoareTripleChecker+Invalid, 824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:37:32,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [380 Valid, 1669 Invalid, 824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 771 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:37:32,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2266 states. [2022-03-03 17:37:32,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2266 to 1568. [2022-03-03 17:37:32,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1568 states, 1567 states have (on average 2.8704530950861518) internal successors, (4498), 1567 states have internal predecessors, (4498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:32,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 4498 transitions. [2022-03-03 17:37:32,514 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 4498 transitions. Word has length 69 [2022-03-03 17:37:32,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:37:32,514 INFO L470 AbstractCegarLoop]: Abstraction has 1568 states and 4498 transitions. [2022-03-03 17:37:32,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:32,514 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 4498 transitions. [2022-03-03 17:37:32,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-03 17:37:32,517 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:37:32,517 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:37:32,533 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-03-03 17:37:32,727 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,SelfDestructingSolverStorable27 [2022-03-03 17:37:32,727 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:37:32,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:37:32,728 INFO L85 PathProgramCache]: Analyzing trace with hash 331809321, now seen corresponding path program 26 times [2022-03-03 17:37:32,728 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:37:32,728 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472055353] [2022-03-03 17:37:32,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:37:32,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:37:32,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:37:32,881 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:32,881 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:37:32,881 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472055353] [2022-03-03 17:37:32,881 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472055353] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:37:32,881 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748876627] [2022-03-03 17:37:32,881 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:37:32,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:37:32,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:37:32,882 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) [2022-03-03 17:37:32,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-03-03 17:37:32,936 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:37:32,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:37:32,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:37:32,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:37:33,249 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:33,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:37:33,734 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:33,734 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748876627] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:37:33,734 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:37:33,734 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-03-03 17:37:33,734 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770674151] [2022-03-03 17:37:33,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:37:33,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-03 17:37:33,735 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:37:33,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-03 17:37:33,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=778, Unknown=0, NotChecked=0, Total=930 [2022-03-03 17:37:33,735 INFO L87 Difference]: Start difference. First operand 1568 states and 4498 transitions. Second operand has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:36,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:37:36,116 INFO L93 Difference]: Finished difference Result 3173 states and 8646 transitions. [2022-03-03 17:37:36,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-03-03 17:37:36,116 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-03-03 17:37:36,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:37:36,121 INFO L225 Difference]: With dead ends: 3173 [2022-03-03 17:37:36,121 INFO L226 Difference]: Without dead ends: 2882 [2022-03-03 17:37:36,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 119 SyntacticMatches, 3 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2030 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1228, Invalid=5744, Unknown=0, NotChecked=0, Total=6972 [2022-03-03 17:37:36,121 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 803 mSDsluCounter, 2857 mSDsCounter, 0 mSdLazyCounter, 1548 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 803 SdHoareTripleChecker+Valid, 2913 SdHoareTripleChecker+Invalid, 1648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:37:36,122 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [803 Valid, 2913 Invalid, 1648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1548 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:37:36,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2882 states. [2022-03-03 17:37:36,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2882 to 1452. [2022-03-03 17:37:36,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1452 states, 1451 states have (on average 2.8442453480358374) internal successors, (4127), 1451 states have internal predecessors, (4127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:36,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 4127 transitions. [2022-03-03 17:37:36,142 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 4127 transitions. Word has length 69 [2022-03-03 17:37:36,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:37:36,142 INFO L470 AbstractCegarLoop]: Abstraction has 1452 states and 4127 transitions. [2022-03-03 17:37:36,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:36,142 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 4127 transitions. [2022-03-03 17:37:36,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-03 17:37:36,144 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:37:36,144 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:37:36,160 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-03-03 17:37:36,347 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,SelfDestructingSolverStorable28 [2022-03-03 17:37:36,347 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:37:36,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:37:36,348 INFO L85 PathProgramCache]: Analyzing trace with hash -104609969, now seen corresponding path program 27 times [2022-03-03 17:37:36,348 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:37:36,348 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798230056] [2022-03-03 17:37:36,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:37:36,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:37:36,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:37:36,502 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:36,503 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:37:36,503 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798230056] [2022-03-03 17:37:36,503 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798230056] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:37:36,503 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658935273] [2022-03-03 17:37:36,503 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:37:36,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:37:36,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:37:36,504 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) [2022-03-03 17:37:36,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-03-03 17:37:36,559 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 17:37:36,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:37:36,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:37:36,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:37:36,891 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:36,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:37:37,241 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:37,248 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [658935273] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:37:37,248 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:37:37,248 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-03-03 17:37:37,249 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957473642] [2022-03-03 17:37:37,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:37:37,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-03 17:37:37,249 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:37:37,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-03 17:37:37,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=831, Unknown=0, NotChecked=0, Total=992 [2022-03-03 17:37:37,249 INFO L87 Difference]: Start difference. First operand 1452 states and 4127 transitions. Second operand has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:39,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:37:39,794 INFO L93 Difference]: Finished difference Result 3152 states and 8503 transitions. [2022-03-03 17:37:39,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-03-03 17:37:39,794 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-03-03 17:37:39,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:37:39,798 INFO L225 Difference]: With dead ends: 3152 [2022-03-03 17:37:39,799 INFO L226 Difference]: Without dead ends: 2981 [2022-03-03 17:37:39,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3091 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1769, Invalid=7737, Unknown=0, NotChecked=0, Total=9506 [2022-03-03 17:37:39,800 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 1083 mSDsluCounter, 2462 mSDsCounter, 0 mSdLazyCounter, 1351 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1083 SdHoareTripleChecker+Valid, 2541 SdHoareTripleChecker+Invalid, 1464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:37:39,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1083 Valid, 2541 Invalid, 1464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1351 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:37:39,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2981 states. [2022-03-03 17:37:39,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2981 to 1524. [2022-03-03 17:37:39,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1524 states, 1523 states have (on average 2.866053841103086) internal successors, (4365), 1523 states have internal predecessors, (4365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:39,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1524 states to 1524 states and 4365 transitions. [2022-03-03 17:37:39,826 INFO L78 Accepts]: Start accepts. Automaton has 1524 states and 4365 transitions. Word has length 69 [2022-03-03 17:37:39,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:37:39,826 INFO L470 AbstractCegarLoop]: Abstraction has 1524 states and 4365 transitions. [2022-03-03 17:37:39,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:39,827 INFO L276 IsEmpty]: Start isEmpty. Operand 1524 states and 4365 transitions. [2022-03-03 17:37:39,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-03 17:37:39,829 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:37:39,829 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:37:39,859 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-03-03 17:37:40,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:37:40,045 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:37:40,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:37:40,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1709394251, now seen corresponding path program 28 times [2022-03-03 17:37:40,046 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:37:40,046 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276960712] [2022-03-03 17:37:40,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:37:40,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:37:40,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:37:40,197 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:40,197 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:37:40,197 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276960712] [2022-03-03 17:37:40,197 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276960712] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:37:40,197 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075167599] [2022-03-03 17:37:40,197 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:37:40,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:37:40,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:37:40,198 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) [2022-03-03 17:37:40,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-03-03 17:37:40,260 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:37:40,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:37:40,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:37:40,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:37:40,563 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:40,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:37:40,907 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:40,908 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075167599] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:37:40,908 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:37:40,908 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-03-03 17:37:40,908 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183235962] [2022-03-03 17:37:40,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:37:40,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-03 17:37:40,908 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:37:40,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-03 17:37:40,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=834, Unknown=0, NotChecked=0, Total=992 [2022-03-03 17:37:40,909 INFO L87 Difference]: Start difference. First operand 1524 states and 4365 transitions. Second operand has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:42,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:37:42,366 INFO L93 Difference]: Finished difference Result 2664 states and 7210 transitions. [2022-03-03 17:37:42,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-03-03 17:37:42,367 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-03-03 17:37:42,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:37:42,370 INFO L225 Difference]: With dead ends: 2664 [2022-03-03 17:37:42,370 INFO L226 Difference]: Without dead ends: 2457 [2022-03-03 17:37:42,371 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1690 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=970, Invalid=4882, Unknown=0, NotChecked=0, Total=5852 [2022-03-03 17:37:42,371 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 683 mSDsluCounter, 2309 mSDsCounter, 0 mSdLazyCounter, 1181 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 683 SdHoareTripleChecker+Valid, 2359 SdHoareTripleChecker+Invalid, 1249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:37:42,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [683 Valid, 2359 Invalid, 1249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1181 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:37:42,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2457 states. [2022-03-03 17:37:42,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2457 to 1384. [2022-03-03 17:37:42,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1384 states, 1383 states have (on average 2.81706435285611) internal successors, (3896), 1383 states have internal predecessors, (3896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:42,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 3896 transitions. [2022-03-03 17:37:42,390 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 3896 transitions. Word has length 69 [2022-03-03 17:37:42,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:37:42,391 INFO L470 AbstractCegarLoop]: Abstraction has 1384 states and 3896 transitions. [2022-03-03 17:37:42,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:42,391 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 3896 transitions. [2022-03-03 17:37:42,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-03 17:37:42,392 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:37:42,393 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:37:42,410 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-03-03 17:37:42,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:37:42,599 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:37:42,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:37:42,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1915833585, now seen corresponding path program 29 times [2022-03-03 17:37:42,600 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:37:42,600 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048660327] [2022-03-03 17:37:42,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:37:42,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:37:42,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:37:42,768 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:42,769 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:37:42,769 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048660327] [2022-03-03 17:37:42,769 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048660327] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:37:42,769 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211735296] [2022-03-03 17:37:42,769 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:37:42,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:37:42,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:37:42,770 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) [2022-03-03 17:37:42,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-03-03 17:37:42,826 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:37:42,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:37:42,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:37:42,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:37:43,153 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:43,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:37:43,542 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:43,542 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211735296] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:37:43,542 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:37:43,542 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-03-03 17:37:43,542 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166939594] [2022-03-03 17:37:43,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:37:43,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-03 17:37:43,543 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:37:43,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-03 17:37:43,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2022-03-03 17:37:43,543 INFO L87 Difference]: Start difference. First operand 1384 states and 3896 transitions. Second operand has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:46,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:37:46,527 INFO L93 Difference]: Finished difference Result 3219 states and 8750 transitions. [2022-03-03 17:37:46,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-03-03 17:37:46,527 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-03-03 17:37:46,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:37:46,532 INFO L225 Difference]: With dead ends: 3219 [2022-03-03 17:37:46,532 INFO L226 Difference]: Without dead ends: 3087 [2022-03-03 17:37:46,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3968 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1837, Invalid=9719, Unknown=0, NotChecked=0, Total=11556 [2022-03-03 17:37:46,533 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 948 mSDsluCounter, 2726 mSDsCounter, 0 mSdLazyCounter, 1556 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 2820 SdHoareTripleChecker+Invalid, 1677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 1556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:37:46,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [948 Valid, 2820 Invalid, 1677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 1556 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:37:46,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3087 states. [2022-03-03 17:37:46,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3087 to 1488. [2022-03-03 17:37:46,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1488 states, 1487 states have (on average 2.828513786146604) internal successors, (4206), 1487 states have internal predecessors, (4206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:46,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 4206 transitions. [2022-03-03 17:37:46,559 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 4206 transitions. Word has length 69 [2022-03-03 17:37:46,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:37:46,559 INFO L470 AbstractCegarLoop]: Abstraction has 1488 states and 4206 transitions. [2022-03-03 17:37:46,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:46,559 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 4206 transitions. [2022-03-03 17:37:46,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-03 17:37:46,561 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:37:46,561 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:37:46,589 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-03-03 17:37:46,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:37:46,789 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:37:46,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:37:46,790 INFO L85 PathProgramCache]: Analyzing trace with hash 958431701, now seen corresponding path program 30 times [2022-03-03 17:37:46,790 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:37:46,790 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057544165] [2022-03-03 17:37:46,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:37:46,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:37:46,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:37:46,941 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:46,941 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:37:46,941 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057544165] [2022-03-03 17:37:46,941 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057544165] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:37:46,942 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684528762] [2022-03-03 17:37:46,942 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:37:46,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:37:46,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:37:46,943 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) [2022-03-03 17:37:46,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-03-03 17:37:47,005 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-03 17:37:47,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:37:47,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:37:47,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:37:47,335 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:47,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:37:47,721 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:47,722 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684528762] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:37:47,722 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:37:47,722 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-03-03 17:37:47,722 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715964010] [2022-03-03 17:37:47,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:37:47,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-03 17:37:47,722 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:37:47,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-03 17:37:47,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=845, Unknown=0, NotChecked=0, Total=992 [2022-03-03 17:37:47,723 INFO L87 Difference]: Start difference. First operand 1488 states and 4206 transitions. Second operand has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:49,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:37:49,754 INFO L93 Difference]: Finished difference Result 3009 states and 8256 transitions. [2022-03-03 17:37:49,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-03-03 17:37:49,754 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-03-03 17:37:49,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:37:49,758 INFO L225 Difference]: With dead ends: 3009 [2022-03-03 17:37:49,758 INFO L226 Difference]: Without dead ends: 2907 [2022-03-03 17:37:49,759 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2511 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1195, Invalid=6637, Unknown=0, NotChecked=0, Total=7832 [2022-03-03 17:37:49,759 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 627 mSDsluCounter, 2335 mSDsCounter, 0 mSdLazyCounter, 1234 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 2403 SdHoareTripleChecker+Invalid, 1330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:37:49,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [627 Valid, 2403 Invalid, 1330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1234 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:37:49,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2907 states. [2022-03-03 17:37:49,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2907 to 1504. [2022-03-03 17:37:49,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1504 states, 1503 states have (on average 2.8276779773785763) internal successors, (4250), 1503 states have internal predecessors, (4250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:49,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1504 states to 1504 states and 4250 transitions. [2022-03-03 17:37:49,780 INFO L78 Accepts]: Start accepts. Automaton has 1504 states and 4250 transitions. Word has length 69 [2022-03-03 17:37:49,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:37:49,780 INFO L470 AbstractCegarLoop]: Abstraction has 1504 states and 4250 transitions. [2022-03-03 17:37:49,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:49,780 INFO L276 IsEmpty]: Start isEmpty. Operand 1504 states and 4250 transitions. [2022-03-03 17:37:49,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-03 17:37:49,782 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:37:49,782 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:37:49,798 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-03-03 17:37:49,983 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,SelfDestructingSolverStorable32 [2022-03-03 17:37:49,983 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:37:49,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:37:49,983 INFO L85 PathProgramCache]: Analyzing trace with hash 601221851, now seen corresponding path program 31 times [2022-03-03 17:37:49,983 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:37:49,983 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257223673] [2022-03-03 17:37:49,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:37:49,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:37:49,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:37:50,157 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:50,158 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:37:50,158 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257223673] [2022-03-03 17:37:50,158 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257223673] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:37:50,158 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269559560] [2022-03-03 17:37:50,158 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:37:50,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:37:50,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:37:50,159 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) [2022-03-03 17:37:50,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-03-03 17:37:50,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:37:50,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:37:50,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:37:50,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:50,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:37:50,918 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:50,918 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269559560] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:37:50,919 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:37:50,919 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-03-03 17:37:50,919 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098277801] [2022-03-03 17:37:50,919 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:37:50,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-03 17:37:50,919 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:37:50,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-03 17:37:50,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=835, Unknown=0, NotChecked=0, Total=992 [2022-03-03 17:37:50,920 INFO L87 Difference]: Start difference. First operand 1504 states and 4250 transitions. Second operand has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:53,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:37:53,129 INFO L93 Difference]: Finished difference Result 3046 states and 8326 transitions. [2022-03-03 17:37:53,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-03-03 17:37:53,129 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-03-03 17:37:53,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:37:53,133 INFO L225 Difference]: With dead ends: 3046 [2022-03-03 17:37:53,133 INFO L226 Difference]: Without dead ends: 2914 [2022-03-03 17:37:53,134 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2248 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1245, Invalid=5895, Unknown=0, NotChecked=0, Total=7140 [2022-03-03 17:37:53,134 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 793 mSDsluCounter, 2447 mSDsCounter, 0 mSdLazyCounter, 1362 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 2534 SdHoareTripleChecker+Invalid, 1487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:37:53,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [793 Valid, 2534 Invalid, 1487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1362 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:37:53,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2914 states. [2022-03-03 17:37:53,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2914 to 1604. [2022-03-03 17:37:53,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1604 states, 1603 states have (on average 2.835308796007486) internal successors, (4545), 1603 states have internal predecessors, (4545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:53,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 4545 transitions. [2022-03-03 17:37:53,159 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 4545 transitions. Word has length 69 [2022-03-03 17:37:53,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:37:53,159 INFO L470 AbstractCegarLoop]: Abstraction has 1604 states and 4545 transitions. [2022-03-03 17:37:53,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:53,159 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 4545 transitions. [2022-03-03 17:37:53,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-03 17:37:53,161 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:37:53,161 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:37:53,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-03-03 17:37:53,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:37:53,371 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:37:53,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:37:53,371 INFO L85 PathProgramCache]: Analyzing trace with hash -819480159, now seen corresponding path program 32 times [2022-03-03 17:37:53,372 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:37:53,372 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863059525] [2022-03-03 17:37:53,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:37:53,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:37:53,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:37:53,540 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:53,540 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:37:53,540 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863059525] [2022-03-03 17:37:53,540 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863059525] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:37:53,540 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994181958] [2022-03-03 17:37:53,540 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:37:53,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:37:53,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:37:53,541 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) [2022-03-03 17:37:53,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-03-03 17:37:53,605 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:37:53,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:37:53,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:37:53,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:37:53,940 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:53,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:37:54,384 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:54,385 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994181958] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:37:54,385 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:37:54,385 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-03-03 17:37:54,385 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021610069] [2022-03-03 17:37:54,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:37:54,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-03 17:37:54,385 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:37:54,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-03 17:37:54,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=848, Unknown=0, NotChecked=0, Total=992 [2022-03-03 17:37:54,386 INFO L87 Difference]: Start difference. First operand 1604 states and 4545 transitions. Second operand has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:57,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:37:57,552 INFO L93 Difference]: Finished difference Result 3721 states and 10256 transitions. [2022-03-03 17:37:57,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-03-03 17:37:57,553 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-03-03 17:37:57,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:37:57,558 INFO L225 Difference]: With dead ends: 3721 [2022-03-03 17:37:57,558 INFO L226 Difference]: Without dead ends: 3568 [2022-03-03 17:37:57,559 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3514 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1592, Invalid=9120, Unknown=0, NotChecked=0, Total=10712 [2022-03-03 17:37:57,559 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 643 mSDsluCounter, 2486 mSDsCounter, 0 mSdLazyCounter, 1343 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 643 SdHoareTripleChecker+Valid, 2574 SdHoareTripleChecker+Invalid, 1456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:37:57,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [643 Valid, 2574 Invalid, 1456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1343 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:37:57,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3568 states. [2022-03-03 17:37:57,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3568 to 1820. [2022-03-03 17:37:57,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1820 states, 1819 states have (on average 2.862561847168774) internal successors, (5207), 1819 states have internal predecessors, (5207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:57,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1820 states to 1820 states and 5207 transitions. [2022-03-03 17:37:57,585 INFO L78 Accepts]: Start accepts. Automaton has 1820 states and 5207 transitions. Word has length 69 [2022-03-03 17:37:57,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:37:57,585 INFO L470 AbstractCegarLoop]: Abstraction has 1820 states and 5207 transitions. [2022-03-03 17:37:57,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:57,586 INFO L276 IsEmpty]: Start isEmpty. Operand 1820 states and 5207 transitions. [2022-03-03 17:37:57,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-03 17:37:57,588 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:37:57,588 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:37:57,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-03-03 17:37:57,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:37:57,789 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:37:57,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:37:57,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1466007099, now seen corresponding path program 33 times [2022-03-03 17:37:57,789 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:37:57,789 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676240063] [2022-03-03 17:37:57,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:37:57,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:37:57,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:37:57,970 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:57,970 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:37:57,970 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676240063] [2022-03-03 17:37:57,970 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676240063] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:37:57,970 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604060564] [2022-03-03 17:37:57,970 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:37:57,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:37:57,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:37:57,971 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) [2022-03-03 17:37:57,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-03-03 17:37:58,028 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 17:37:58,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:37:58,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:37:58,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:37:58,355 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:58,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:37:58,691 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:58,691 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604060564] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:37:58,691 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:37:58,692 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-03-03 17:37:58,692 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123568417] [2022-03-03 17:37:58,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:37:58,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-03 17:37:58,692 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:37:58,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-03 17:37:58,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=828, Unknown=0, NotChecked=0, Total=992 [2022-03-03 17:37:58,693 INFO L87 Difference]: Start difference. First operand 1820 states and 5207 transitions. Second operand has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:59,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:37:59,489 INFO L93 Difference]: Finished difference Result 2637 states and 7401 transitions. [2022-03-03 17:37:59,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-03 17:37:59,490 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-03-03 17:37:59,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:37:59,493 INFO L225 Difference]: With dead ends: 2637 [2022-03-03 17:37:59,493 INFO L226 Difference]: Without dead ends: 2586 [2022-03-03 17:37:59,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 749 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=550, Invalid=2312, Unknown=0, NotChecked=0, Total=2862 [2022-03-03 17:37:59,494 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 285 mSDsluCounter, 2046 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 2089 SdHoareTripleChecker+Invalid, 1052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:37:59,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [285 Valid, 2089 Invalid, 1052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1007 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:37:59,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2586 states. [2022-03-03 17:37:59,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2586 to 1816. [2022-03-03 17:37:59,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1816 states, 1815 states have (on average 2.860606060606061) internal successors, (5192), 1815 states have internal predecessors, (5192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:59,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1816 states to 1816 states and 5192 transitions. [2022-03-03 17:37:59,516 INFO L78 Accepts]: Start accepts. Automaton has 1816 states and 5192 transitions. Word has length 69 [2022-03-03 17:37:59,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:37:59,517 INFO L470 AbstractCegarLoop]: Abstraction has 1816 states and 5192 transitions. [2022-03-03 17:37:59,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:59,517 INFO L276 IsEmpty]: Start isEmpty. Operand 1816 states and 5192 transitions. [2022-03-03 17:37:59,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-03 17:37:59,519 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:37:59,519 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:37:59,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-03-03 17:37:59,720 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,SelfDestructingSolverStorable35 [2022-03-03 17:37:59,720 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:37:59,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:37:59,720 INFO L85 PathProgramCache]: Analyzing trace with hash 407050943, now seen corresponding path program 34 times [2022-03-03 17:37:59,720 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:37:59,720 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041665792] [2022-03-03 17:37:59,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:37:59,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:37:59,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:37:59,891 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:59,891 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:37:59,891 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041665792] [2022-03-03 17:37:59,892 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041665792] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:37:59,892 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733623529] [2022-03-03 17:37:59,892 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:37:59,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:37:59,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:37:59,893 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) [2022-03-03 17:37:59,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-03-03 17:37:59,960 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:37:59,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:37:59,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:37:59,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:38:00,277 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:00,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:38:00,680 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:00,681 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733623529] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:38:00,681 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:38:00,681 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-03-03 17:38:00,681 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540167750] [2022-03-03 17:38:00,681 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:38:00,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-03 17:38:00,681 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:38:00,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-03 17:38:00,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=773, Unknown=0, NotChecked=0, Total=930 [2022-03-03 17:38:00,682 INFO L87 Difference]: Start difference. First operand 1816 states and 5192 transitions. Second operand has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:02,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:38:02,678 INFO L93 Difference]: Finished difference Result 3602 states and 9801 transitions. [2022-03-03 17:38:02,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-03-03 17:38:02,678 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-03-03 17:38:02,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:38:02,683 INFO L225 Difference]: With dead ends: 3602 [2022-03-03 17:38:02,683 INFO L226 Difference]: Without dead ends: 3398 [2022-03-03 17:38:02,684 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 120 SyntacticMatches, 2 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1748 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1217, Invalid=4945, Unknown=0, NotChecked=0, Total=6162 [2022-03-03 17:38:02,684 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 948 mSDsluCounter, 2286 mSDsCounter, 0 mSdLazyCounter, 1351 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 2317 SdHoareTripleChecker+Invalid, 1473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 1351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:38:02,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [948 Valid, 2317 Invalid, 1473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 1351 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:38:02,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3398 states. [2022-03-03 17:38:02,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3398 to 1932. [2022-03-03 17:38:02,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1932 states, 1931 states have (on average 2.8788192646297257) internal successors, (5559), 1931 states have internal predecessors, (5559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:02,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1932 states to 1932 states and 5559 transitions. [2022-03-03 17:38:02,711 INFO L78 Accepts]: Start accepts. Automaton has 1932 states and 5559 transitions. Word has length 69 [2022-03-03 17:38:02,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:38:02,711 INFO L470 AbstractCegarLoop]: Abstraction has 1932 states and 5559 transitions. [2022-03-03 17:38:02,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:02,711 INFO L276 IsEmpty]: Start isEmpty. Operand 1932 states and 5559 transitions. [2022-03-03 17:38:02,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-03 17:38:02,714 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:38:02,714 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:38:02,730 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-03-03 17:38:02,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-03-03 17:38:02,914 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:38:02,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:38:02,915 INFO L85 PathProgramCache]: Analyzing trace with hash -266822313, now seen corresponding path program 35 times [2022-03-03 17:38:02,915 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:38:02,915 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161689762] [2022-03-03 17:38:02,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:38:02,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:38:02,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:38:03,069 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:03,069 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:38:03,069 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161689762] [2022-03-03 17:38:03,069 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161689762] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:38:03,069 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187868945] [2022-03-03 17:38:03,070 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:38:03,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:38:03,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:38:03,071 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) [2022-03-03 17:38:03,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-03-03 17:38:03,128 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 17:38:03,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:38:03,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:38:03,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:38:03,425 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:03,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:38:03,897 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:03,897 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187868945] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:38:03,897 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:38:03,897 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-03-03 17:38:03,897 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213956413] [2022-03-03 17:38:03,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:38:03,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-03 17:38:03,898 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:38:03,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-03 17:38:03,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=769, Unknown=0, NotChecked=0, Total=930 [2022-03-03 17:38:03,898 INFO L87 Difference]: Start difference. First operand 1932 states and 5559 transitions. Second operand has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:05,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:38:05,580 INFO L93 Difference]: Finished difference Result 3241 states and 8902 transitions. [2022-03-03 17:38:05,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-03 17:38:05,580 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-03-03 17:38:05,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:38:05,584 INFO L225 Difference]: With dead ends: 3241 [2022-03-03 17:38:05,584 INFO L226 Difference]: Without dead ends: 3013 [2022-03-03 17:38:05,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 119 SyntacticMatches, 3 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1185 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=851, Invalid=3571, Unknown=0, NotChecked=0, Total=4422 [2022-03-03 17:38:05,585 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 734 mSDsluCounter, 2257 mSDsCounter, 0 mSdLazyCounter, 1277 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 2295 SdHoareTripleChecker+Invalid, 1369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:38:05,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [734 Valid, 2295 Invalid, 1369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1277 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:38:05,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3013 states. [2022-03-03 17:38:05,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3013 to 1908. [2022-03-03 17:38:05,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1908 states, 1907 states have (on average 2.859465128474043) internal successors, (5453), 1907 states have internal predecessors, (5453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:05,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1908 states to 1908 states and 5453 transitions. [2022-03-03 17:38:05,611 INFO L78 Accepts]: Start accepts. Automaton has 1908 states and 5453 transitions. Word has length 69 [2022-03-03 17:38:05,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:38:05,611 INFO L470 AbstractCegarLoop]: Abstraction has 1908 states and 5453 transitions. [2022-03-03 17:38:05,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:05,612 INFO L276 IsEmpty]: Start isEmpty. Operand 1908 states and 5453 transitions. [2022-03-03 17:38:05,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-03 17:38:05,614 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:38:05,614 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:38:05,630 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-03-03 17:38:05,814 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,SelfDestructingSolverStorable37 [2022-03-03 17:38:05,815 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:38:05,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:38:05,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1230124231, now seen corresponding path program 36 times [2022-03-03 17:38:05,815 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:38:05,815 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753304152] [2022-03-03 17:38:05,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:38:05,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:38:05,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:38:05,979 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:05,980 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:38:05,980 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753304152] [2022-03-03 17:38:05,980 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753304152] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:38:05,980 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618061824] [2022-03-03 17:38:05,980 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:38:05,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:38:05,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:38:05,981 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) [2022-03-03 17:38:05,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-03-03 17:38:06,037 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 17:38:06,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:38:06,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:38:06,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:38:06,341 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:06,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:38:06,813 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:06,813 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618061824] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:38:06,813 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:38:06,813 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-03-03 17:38:06,813 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350234839] [2022-03-03 17:38:06,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:38:06,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-03 17:38:06,814 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:38:06,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-03 17:38:06,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=779, Unknown=0, NotChecked=0, Total=930 [2022-03-03 17:38:06,814 INFO L87 Difference]: Start difference. First operand 1908 states and 5453 transitions. Second operand has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:09,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:38:09,803 INFO L93 Difference]: Finished difference Result 4001 states and 10852 transitions. [2022-03-03 17:38:09,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-03-03 17:38:09,804 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-03-03 17:38:09,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:38:09,809 INFO L225 Difference]: With dead ends: 4001 [2022-03-03 17:38:09,809 INFO L226 Difference]: Without dead ends: 3797 [2022-03-03 17:38:09,810 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 119 SyntacticMatches, 3 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2648 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1510, Invalid=7046, Unknown=0, NotChecked=0, Total=8556 [2022-03-03 17:38:09,810 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 1023 mSDsluCounter, 2430 mSDsCounter, 0 mSdLazyCounter, 1441 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1023 SdHoareTripleChecker+Valid, 2493 SdHoareTripleChecker+Invalid, 1563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 1441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:38:09,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1023 Valid, 2493 Invalid, 1563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 1441 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:38:09,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3797 states. [2022-03-03 17:38:09,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3797 to 2128. [2022-03-03 17:38:09,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2128 states, 2127 states have (on average 2.8913963328631875) internal successors, (6150), 2127 states have internal predecessors, (6150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:09,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2128 states to 2128 states and 6150 transitions. [2022-03-03 17:38:09,840 INFO L78 Accepts]: Start accepts. Automaton has 2128 states and 6150 transitions. Word has length 69 [2022-03-03 17:38:09,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:38:09,840 INFO L470 AbstractCegarLoop]: Abstraction has 2128 states and 6150 transitions. [2022-03-03 17:38:09,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:09,840 INFO L276 IsEmpty]: Start isEmpty. Operand 2128 states and 6150 transitions. [2022-03-03 17:38:09,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-03 17:38:09,843 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:38:09,843 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:38:09,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-03-03 17:38:10,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-03-03 17:38:10,043 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:38:10,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:38:10,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1903997487, now seen corresponding path program 37 times [2022-03-03 17:38:10,044 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:38:10,044 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732512188] [2022-03-03 17:38:10,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:38:10,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:38:10,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:38:10,209 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:10,209 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:38:10,209 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732512188] [2022-03-03 17:38:10,209 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732512188] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:38:10,209 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956806808] [2022-03-03 17:38:10,209 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:38:10,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:38:10,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:38:10,210 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) [2022-03-03 17:38:10,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-03-03 17:38:10,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:38:10,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:38:10,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:38:10,588 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:10,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:38:10,987 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:10,988 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956806808] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:38:10,988 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:38:10,988 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-03-03 17:38:10,988 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195283843] [2022-03-03 17:38:10,988 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:38:10,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-03 17:38:10,988 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:38:10,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-03 17:38:10,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=775, Unknown=0, NotChecked=0, Total=930 [2022-03-03 17:38:10,989 INFO L87 Difference]: Start difference. First operand 2128 states and 6150 transitions. Second operand has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:12,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:38:12,955 INFO L93 Difference]: Finished difference Result 3980 states and 11079 transitions. [2022-03-03 17:38:12,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-03-03 17:38:12,955 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-03-03 17:38:12,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:38:12,961 INFO L225 Difference]: With dead ends: 3980 [2022-03-03 17:38:12,961 INFO L226 Difference]: Without dead ends: 3701 [2022-03-03 17:38:12,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 120 SyntacticMatches, 2 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1600 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1114, Invalid=4738, Unknown=0, NotChecked=0, Total=5852 [2022-03-03 17:38:12,962 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 749 mSDsluCounter, 2833 mSDsCounter, 0 mSdLazyCounter, 1587 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 749 SdHoareTripleChecker+Valid, 2874 SdHoareTripleChecker+Invalid, 1683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:38:12,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [749 Valid, 2874 Invalid, 1683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1587 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:38:12,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3701 states. [2022-03-03 17:38:13,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3701 to 2280. [2022-03-03 17:38:13,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2280 states, 2279 states have (on average 2.9258446687143485) internal successors, (6668), 2279 states have internal predecessors, (6668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:13,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2280 states to 2280 states and 6668 transitions. [2022-03-03 17:38:13,009 INFO L78 Accepts]: Start accepts. Automaton has 2280 states and 6668 transitions. Word has length 69 [2022-03-03 17:38:13,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:38:13,009 INFO L470 AbstractCegarLoop]: Abstraction has 2280 states and 6668 transitions. [2022-03-03 17:38:13,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:13,009 INFO L276 IsEmpty]: Start isEmpty. Operand 2280 states and 6668 transitions. [2022-03-03 17:38:13,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-03 17:38:13,012 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:38:13,013 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:38:13,033 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-03-03 17:38:13,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-03-03 17:38:13,229 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:38:13,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:38:13,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1018159229, now seen corresponding path program 38 times [2022-03-03 17:38:13,229 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:38:13,229 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828522934] [2022-03-03 17:38:13,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:38:13,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:38:13,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:38:13,392 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:13,392 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:38:13,392 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828522934] [2022-03-03 17:38:13,392 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828522934] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:38:13,392 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002025834] [2022-03-03 17:38:13,392 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:38:13,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:38:13,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:38:13,393 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) [2022-03-03 17:38:13,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-03-03 17:38:13,453 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:38:13,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:38:13,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:38:13,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:38:13,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:13,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:38:14,194 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:14,194 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002025834] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:38:14,194 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:38:14,194 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-03-03 17:38:14,194 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928777179] [2022-03-03 17:38:14,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:38:14,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-03 17:38:14,195 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:38:14,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-03 17:38:14,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=778, Unknown=0, NotChecked=0, Total=930 [2022-03-03 17:38:14,195 INFO L87 Difference]: Start difference. First operand 2280 states and 6668 transitions. Second operand has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:16,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:38:16,534 INFO L93 Difference]: Finished difference Result 3893 states and 10806 transitions. [2022-03-03 17:38:16,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-03-03 17:38:16,534 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-03-03 17:38:16,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:38:16,540 INFO L225 Difference]: With dead ends: 3893 [2022-03-03 17:38:16,540 INFO L226 Difference]: Without dead ends: 3614 [2022-03-03 17:38:16,541 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 119 SyntacticMatches, 3 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1894 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1263, Invalid=5379, Unknown=0, NotChecked=0, Total=6642 [2022-03-03 17:38:16,541 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 834 mSDsluCounter, 2634 mSDsCounter, 0 mSdLazyCounter, 1492 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 834 SdHoareTripleChecker+Valid, 2684 SdHoareTripleChecker+Invalid, 1596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:38:16,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [834 Valid, 2684 Invalid, 1596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1492 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:38:16,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3614 states. [2022-03-03 17:38:16,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3614 to 2084. [2022-03-03 17:38:16,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2084 states, 2083 states have (on average 2.8886221795487277) internal successors, (6017), 2083 states have internal predecessors, (6017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:16,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2084 states to 2084 states and 6017 transitions. [2022-03-03 17:38:16,585 INFO L78 Accepts]: Start accepts. Automaton has 2084 states and 6017 transitions. Word has length 69 [2022-03-03 17:38:16,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:38:16,585 INFO L470 AbstractCegarLoop]: Abstraction has 2084 states and 6017 transitions. [2022-03-03 17:38:16,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:16,585 INFO L276 IsEmpty]: Start isEmpty. Operand 2084 states and 6017 transitions. [2022-03-03 17:38:16,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-03 17:38:16,588 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:38:16,588 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:38:16,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-03-03 17:38:16,788 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,SelfDestructingSolverStorable40 [2022-03-03 17:38:16,788 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:38:16,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:38:16,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1255613195, now seen corresponding path program 39 times [2022-03-03 17:38:16,789 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:38:16,789 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044269024] [2022-03-03 17:38:16,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:38:16,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:38:16,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:38:17,006 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:17,006 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:38:17,006 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044269024] [2022-03-03 17:38:17,006 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044269024] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:38:17,006 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225498584] [2022-03-03 17:38:17,006 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:38:17,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:38:17,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:38:17,007 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:38:17,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-03-03 17:38:17,069 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 17:38:17,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:38:17,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:38:17,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:38:17,364 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:17,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:38:17,702 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:17,702 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [225498584] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:38:17,702 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:38:17,702 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-03-03 17:38:17,702 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625304006] [2022-03-03 17:38:17,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:38:17,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-03 17:38:17,703 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:38:17,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-03 17:38:17,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=829, Unknown=0, NotChecked=0, Total=992 [2022-03-03 17:38:17,703 INFO L87 Difference]: Start difference. First operand 2084 states and 6017 transitions. Second operand has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:20,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:38:20,213 INFO L93 Difference]: Finished difference Result 3843 states and 10657 transitions. [2022-03-03 17:38:20,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-03-03 17:38:20,213 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-03-03 17:38:20,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:38:20,218 INFO L225 Difference]: With dead ends: 3843 [2022-03-03 17:38:20,219 INFO L226 Difference]: Without dead ends: 3741 [2022-03-03 17:38:20,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2972 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1683, Invalid=7247, Unknown=0, NotChecked=0, Total=8930 [2022-03-03 17:38:20,220 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 708 mSDsluCounter, 3166 mSDsCounter, 0 mSdLazyCounter, 1854 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 708 SdHoareTripleChecker+Valid, 3251 SdHoareTripleChecker+Invalid, 1946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:38:20,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [708 Valid, 3251 Invalid, 1946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1854 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:38:20,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3741 states. [2022-03-03 17:38:20,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3741 to 2184. [2022-03-03 17:38:20,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2184 states, 2183 states have (on average 2.913421896472744) internal successors, (6360), 2183 states have internal predecessors, (6360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:20,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2184 states to 2184 states and 6360 transitions. [2022-03-03 17:38:20,250 INFO L78 Accepts]: Start accepts. Automaton has 2184 states and 6360 transitions. Word has length 69 [2022-03-03 17:38:20,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:38:20,250 INFO L470 AbstractCegarLoop]: Abstraction has 2184 states and 6360 transitions. [2022-03-03 17:38:20,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:20,250 INFO L276 IsEmpty]: Start isEmpty. Operand 2184 states and 6360 transitions. [2022-03-03 17:38:20,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-03 17:38:20,253 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:38:20,253 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:38:20,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-03-03 17:38:20,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2022-03-03 17:38:20,455 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:38:20,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:38:20,455 INFO L85 PathProgramCache]: Analyzing trace with hash 581739939, now seen corresponding path program 40 times [2022-03-03 17:38:20,456 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:38:20,456 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082418106] [2022-03-03 17:38:20,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:38:20,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:38:20,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:38:20,614 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:20,614 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:38:20,614 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082418106] [2022-03-03 17:38:20,614 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082418106] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:38:20,614 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55644771] [2022-03-03 17:38:20,614 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:38:20,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:38:20,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:38:20,615 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:38:20,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-03-03 17:38:20,672 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:38:20,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:38:20,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:38:20,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:38:20,973 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:20,973 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:38:21,285 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:21,285 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55644771] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:38:21,285 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:38:21,285 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-03-03 17:38:21,286 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015767835] [2022-03-03 17:38:21,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:38:21,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-03 17:38:21,286 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:38:21,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-03 17:38:21,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=831, Unknown=0, NotChecked=0, Total=992 [2022-03-03 17:38:21,286 INFO L87 Difference]: Start difference. First operand 2184 states and 6360 transitions. Second operand has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:23,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:38:23,647 INFO L93 Difference]: Finished difference Result 3751 states and 10350 transitions. [2022-03-03 17:38:23,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-03-03 17:38:23,647 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-03-03 17:38:23,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:38:23,652 INFO L225 Difference]: With dead ends: 3751 [2022-03-03 17:38:23,652 INFO L226 Difference]: Without dead ends: 3580 [2022-03-03 17:38:23,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2804 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1668, Invalid=7074, Unknown=0, NotChecked=0, Total=8742 [2022-03-03 17:38:23,653 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 980 mSDsluCounter, 2241 mSDsCounter, 0 mSdLazyCounter, 1321 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 980 SdHoareTripleChecker+Valid, 2326 SdHoareTripleChecker+Invalid, 1434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:38:23,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [980 Valid, 2326 Invalid, 1434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1321 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:38:23,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3580 states. [2022-03-03 17:38:23,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3580 to 2168. [2022-03-03 17:38:23,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2168 states, 2167 states have (on average 2.896169820027688) internal successors, (6276), 2167 states have internal predecessors, (6276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:23,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2168 states to 2168 states and 6276 transitions. [2022-03-03 17:38:23,681 INFO L78 Accepts]: Start accepts. Automaton has 2168 states and 6276 transitions. Word has length 69 [2022-03-03 17:38:23,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:38:23,681 INFO L470 AbstractCegarLoop]: Abstraction has 2168 states and 6276 transitions. [2022-03-03 17:38:23,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:23,681 INFO L276 IsEmpty]: Start isEmpty. Operand 2168 states and 6276 transitions. [2022-03-03 17:38:23,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-03 17:38:23,684 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:38:23,684 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:38:23,703 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-03-03 17:38:23,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2022-03-03 17:38:23,900 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:38:23,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:38:23,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1899223137, now seen corresponding path program 41 times [2022-03-03 17:38:23,901 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:38:23,901 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194781926] [2022-03-03 17:38:23,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:38:23,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:38:23,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:38:24,058 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:24,058 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:38:24,058 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194781926] [2022-03-03 17:38:24,058 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194781926] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:38:24,058 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210971668] [2022-03-03 17:38:24,058 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:38:24,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:38:24,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:38:24,059 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:38:24,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-03-03 17:38:24,117 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:38:24,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:38:24,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:38:24,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:38:24,405 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:24,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:38:24,720 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:24,720 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210971668] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:38:24,720 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:38:24,720 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-03-03 17:38:24,720 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238919883] [2022-03-03 17:38:24,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:38:24,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-03 17:38:24,720 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:38:24,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-03 17:38:24,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=834, Unknown=0, NotChecked=0, Total=992 [2022-03-03 17:38:24,721 INFO L87 Difference]: Start difference. First operand 2168 states and 6276 transitions. Second operand has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:26,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:38:26,154 INFO L93 Difference]: Finished difference Result 3345 states and 9249 transitions. [2022-03-03 17:38:26,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-03-03 17:38:26,154 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-03-03 17:38:26,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:38:26,158 INFO L225 Difference]: With dead ends: 3345 [2022-03-03 17:38:26,159 INFO L226 Difference]: Without dead ends: 3138 [2022-03-03 17:38:26,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1631 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=931, Invalid=4769, Unknown=0, NotChecked=0, Total=5700 [2022-03-03 17:38:26,159 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 555 mSDsluCounter, 2426 mSDsCounter, 0 mSdLazyCounter, 1170 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 2469 SdHoareTripleChecker+Invalid, 1226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:38:26,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [555 Valid, 2469 Invalid, 1226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1170 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:38:26,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3138 states. [2022-03-03 17:38:26,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3138 to 2113. [2022-03-03 17:38:26,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2113 states, 2112 states have (on average 2.882102272727273) internal successors, (6087), 2112 states have internal predecessors, (6087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:26,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2113 states to 2113 states and 6087 transitions. [2022-03-03 17:38:26,185 INFO L78 Accepts]: Start accepts. Automaton has 2113 states and 6087 transitions. Word has length 69 [2022-03-03 17:38:26,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:38:26,185 INFO L470 AbstractCegarLoop]: Abstraction has 2113 states and 6087 transitions. [2022-03-03 17:38:26,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:26,185 INFO L276 IsEmpty]: Start isEmpty. Operand 2113 states and 6087 transitions. [2022-03-03 17:38:26,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-03 17:38:26,188 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:38:26,188 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:38:26,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-03-03 17:38:26,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:38:26,402 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:38:26,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:38:26,402 INFO L85 PathProgramCache]: Analyzing trace with hash -555610421, now seen corresponding path program 42 times [2022-03-03 17:38:26,402 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:38:26,402 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875604937] [2022-03-03 17:38:26,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:38:26,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:38:26,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:38:26,554 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:26,555 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:38:26,555 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875604937] [2022-03-03 17:38:26,555 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875604937] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:38:26,555 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062937108] [2022-03-03 17:38:26,555 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:38:26,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:38:26,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:38:26,556 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:38:26,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-03-03 17:38:26,616 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-03 17:38:26,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:38:26,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:38:26,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:38:26,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:26,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:38:27,295 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:27,295 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062937108] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:38:27,295 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:38:27,295 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-03-03 17:38:27,295 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461010568] [2022-03-03 17:38:27,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:38:27,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-03 17:38:27,295 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:38:27,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-03 17:38:27,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=840, Unknown=0, NotChecked=0, Total=992 [2022-03-03 17:38:27,296 INFO L87 Difference]: Start difference. First operand 2113 states and 6087 transitions. Second operand has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:30,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:38:30,355 INFO L93 Difference]: Finished difference Result 4562 states and 12684 transitions. [2022-03-03 17:38:30,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-03-03 17:38:30,355 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-03-03 17:38:30,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:38:30,361 INFO L225 Difference]: With dead ends: 4562 [2022-03-03 17:38:30,361 INFO L226 Difference]: Without dead ends: 4460 [2022-03-03 17:38:30,362 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3706 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1894, Invalid=9236, Unknown=0, NotChecked=0, Total=11130 [2022-03-03 17:38:30,362 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 850 mSDsluCounter, 2515 mSDsCounter, 0 mSdLazyCounter, 1609 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 2609 SdHoareTripleChecker+Invalid, 1730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 1609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:38:30,362 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [850 Valid, 2609 Invalid, 1730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 1609 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:38:30,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4460 states. [2022-03-03 17:38:30,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4460 to 2153. [2022-03-03 17:38:30,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2153 states, 2152 states have (on average 2.8945167286245352) internal successors, (6229), 2152 states have internal predecessors, (6229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:30,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2153 states to 2153 states and 6229 transitions. [2022-03-03 17:38:30,397 INFO L78 Accepts]: Start accepts. Automaton has 2153 states and 6229 transitions. Word has length 69 [2022-03-03 17:38:30,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:38:30,397 INFO L470 AbstractCegarLoop]: Abstraction has 2153 states and 6229 transitions. [2022-03-03 17:38:30,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:30,397 INFO L276 IsEmpty]: Start isEmpty. Operand 2153 states and 6229 transitions. [2022-03-03 17:38:30,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-03 17:38:30,400 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:38:30,400 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:38:30,426 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-03-03 17:38:30,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:38:30,626 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:38:30,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:38:30,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1229483677, now seen corresponding path program 43 times [2022-03-03 17:38:30,627 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:38:30,627 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36589202] [2022-03-03 17:38:30,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:38:30,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:38:30,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:38:30,784 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:30,785 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:38:30,785 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36589202] [2022-03-03 17:38:30,785 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36589202] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:38:30,785 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491154998] [2022-03-03 17:38:30,785 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:38:30,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:38:30,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:38:30,786 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:38:30,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-03-03 17:38:30,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:38:30,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:38:30,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:38:31,193 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:31,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:38:31,562 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:31,562 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491154998] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:38:31,562 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:38:31,562 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-03-03 17:38:31,562 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218134468] [2022-03-03 17:38:31,562 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:38:31,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-03 17:38:31,562 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:38:31,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-03 17:38:31,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2022-03-03 17:38:31,563 INFO L87 Difference]: Start difference. First operand 2153 states and 6229 transitions. Second operand has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:33,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:38:33,903 INFO L93 Difference]: Finished difference Result 3918 states and 10968 transitions. [2022-03-03 17:38:33,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-03-03 17:38:33,903 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-03-03 17:38:33,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:38:33,909 INFO L225 Difference]: With dead ends: 3918 [2022-03-03 17:38:33,909 INFO L226 Difference]: Without dead ends: 3786 [2022-03-03 17:38:33,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2834 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1555, Invalid=7187, Unknown=0, NotChecked=0, Total=8742 [2022-03-03 17:38:33,910 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 652 mSDsluCounter, 2589 mSDsCounter, 0 mSdLazyCounter, 1474 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 652 SdHoareTripleChecker+Valid, 2699 SdHoareTripleChecker+Invalid, 1584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:38:33,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [652 Valid, 2699 Invalid, 1584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1474 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:38:33,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3786 states. [2022-03-03 17:38:33,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3786 to 2133. [2022-03-03 17:38:33,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2133 states, 2132 states have (on average 2.882739212007505) internal successors, (6146), 2132 states have internal predecessors, (6146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:33,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2133 states to 2133 states and 6146 transitions. [2022-03-03 17:38:33,949 INFO L78 Accepts]: Start accepts. Automaton has 2133 states and 6146 transitions. Word has length 69 [2022-03-03 17:38:33,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:38:33,949 INFO L470 AbstractCegarLoop]: Abstraction has 2133 states and 6146 transitions. [2022-03-03 17:38:33,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:33,949 INFO L276 IsEmpty]: Start isEmpty. Operand 2133 states and 6146 transitions. [2022-03-03 17:38:33,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-03 17:38:33,952 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:38:33,952 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:38:33,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2022-03-03 17:38:34,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2022-03-03 17:38:34,153 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:38:34,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:38:34,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1961445015, now seen corresponding path program 44 times [2022-03-03 17:38:34,153 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:38:34,153 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134318811] [2022-03-03 17:38:34,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:38:34,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:38:34,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:38:34,338 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:34,339 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:38:34,339 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134318811] [2022-03-03 17:38:34,339 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134318811] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:38:34,339 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603085036] [2022-03-03 17:38:34,339 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:38:34,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:38:34,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:38:34,340 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:38:34,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-03-03 17:38:34,401 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:38:34,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:38:34,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:38:34,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:38:34,705 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:34,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:38:35,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:35,123 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603085036] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:38:35,123 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:38:35,123 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-03-03 17:38:35,123 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219547247] [2022-03-03 17:38:35,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:38:35,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-03 17:38:35,124 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:38:35,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-03 17:38:35,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=839, Unknown=0, NotChecked=0, Total=992 [2022-03-03 17:38:35,124 INFO L87 Difference]: Start difference. First operand 2133 states and 6146 transitions. Second operand has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:39,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:38:39,448 INFO L93 Difference]: Finished difference Result 4865 states and 13513 transitions. [2022-03-03 17:38:39,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-03-03 17:38:39,448 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-03-03 17:38:39,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:38:39,454 INFO L225 Difference]: With dead ends: 4865 [2022-03-03 17:38:39,454 INFO L226 Difference]: Without dead ends: 4712 [2022-03-03 17:38:39,455 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4604 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=2220, Invalid=11120, Unknown=0, NotChecked=0, Total=13340 [2022-03-03 17:38:39,455 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 899 mSDsluCounter, 3050 mSDsCounter, 0 mSdLazyCounter, 2012 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 899 SdHoareTripleChecker+Valid, 3166 SdHoareTripleChecker+Invalid, 2158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 2012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 17:38:39,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [899 Valid, 3166 Invalid, 2158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 2012 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-03 17:38:39,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4712 states. [2022-03-03 17:38:39,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4712 to 2445. [2022-03-03 17:38:39,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2445 states, 2444 states have (on average 2.911620294599018) internal successors, (7116), 2444 states have internal predecessors, (7116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:39,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2445 states to 2445 states and 7116 transitions. [2022-03-03 17:38:39,489 INFO L78 Accepts]: Start accepts. Automaton has 2445 states and 7116 transitions. Word has length 69 [2022-03-03 17:38:39,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:38:39,489 INFO L470 AbstractCegarLoop]: Abstraction has 2445 states and 7116 transitions. [2022-03-03 17:38:39,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:39,489 INFO L276 IsEmpty]: Start isEmpty. Operand 2445 states and 7116 transitions. [2022-03-03 17:38:39,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-03 17:38:39,492 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:38:39,492 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:38:39,508 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-03-03 17:38:39,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2022-03-03 17:38:39,695 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:38:39,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:38:39,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1287571759, now seen corresponding path program 45 times [2022-03-03 17:38:39,696 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:38:39,696 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152779789] [2022-03-03 17:38:39,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:38:39,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:38:39,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:38:39,853 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:39,854 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:38:39,854 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152779789] [2022-03-03 17:38:39,854 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152779789] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:38:39,854 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549356346] [2022-03-03 17:38:39,854 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:38:39,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:38:39,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:38:39,855 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:38:39,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-03-03 17:38:39,916 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 17:38:39,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:38:39,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:38:39,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:38:40,219 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:40,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:38:40,570 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:40,570 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549356346] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:38:40,570 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:38:40,570 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-03-03 17:38:40,570 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223941228] [2022-03-03 17:38:40,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:38:40,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-03 17:38:40,571 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:38:40,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-03 17:38:40,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=835, Unknown=0, NotChecked=0, Total=992 [2022-03-03 17:38:40,571 INFO L87 Difference]: Start difference. First operand 2445 states and 7116 transitions. Second operand has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:42,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:38:42,649 INFO L93 Difference]: Finished difference Result 4139 states and 11689 transitions. [2022-03-03 17:38:42,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-03-03 17:38:42,649 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-03-03 17:38:42,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:38:42,655 INFO L225 Difference]: With dead ends: 4139 [2022-03-03 17:38:42,655 INFO L226 Difference]: Without dead ends: 3941 [2022-03-03 17:38:42,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2135 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1289, Invalid=5683, Unknown=0, NotChecked=0, Total=6972 [2022-03-03 17:38:42,656 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 858 mSDsluCounter, 2239 mSDsCounter, 0 mSdLazyCounter, 1269 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 2332 SdHoareTripleChecker+Invalid, 1391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 1269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:38:42,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [858 Valid, 2332 Invalid, 1391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 1269 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:38:42,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3941 states. [2022-03-03 17:38:42,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3941 to 2485. [2022-03-03 17:38:42,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2485 states, 2484 states have (on average 2.9041867954911433) internal successors, (7214), 2484 states have internal predecessors, (7214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:42,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2485 states to 2485 states and 7214 transitions. [2022-03-03 17:38:42,689 INFO L78 Accepts]: Start accepts. Automaton has 2485 states and 7214 transitions. Word has length 69 [2022-03-03 17:38:42,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:38:42,689 INFO L470 AbstractCegarLoop]: Abstraction has 2485 states and 7214 transitions. [2022-03-03 17:38:42,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:42,689 INFO L276 IsEmpty]: Start isEmpty. Operand 2485 states and 7214 transitions. [2022-03-03 17:38:42,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:38:42,692 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:38:42,692 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:38:42,708 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2022-03-03 17:38:42,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2022-03-03 17:38:42,892 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:38:42,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:38:42,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1319302325, now seen corresponding path program 46 times [2022-03-03 17:38:42,893 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:38:42,893 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005931125] [2022-03-03 17:38:42,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:38:42,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:38:42,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:38:43,073 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:43,073 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:38:43,073 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005931125] [2022-03-03 17:38:43,073 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005931125] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:38:43,073 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887236264] [2022-03-03 17:38:43,073 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:38:43,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:38:43,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:38:43,075 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:38:43,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-03-03 17:38:43,135 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:38:43,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:38:43,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:38:43,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:38:43,581 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:43,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:38:44,209 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:44,210 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [887236264] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:38:44,210 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:38:44,210 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-03-03 17:38:44,210 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853402886] [2022-03-03 17:38:44,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:38:44,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-03-03 17:38:44,210 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:38:44,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-03-03 17:38:44,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1460, Unknown=0, NotChecked=0, Total=1640 [2022-03-03 17:38:44,211 INFO L87 Difference]: Start difference. First operand 2485 states and 7214 transitions. Second operand has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:48,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:38:48,074 INFO L93 Difference]: Finished difference Result 5274 states and 14861 transitions. [2022-03-03 17:38:48,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-03-03 17:38:48,074 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:38:48,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:38:48,082 INFO L225 Difference]: With dead ends: 5274 [2022-03-03 17:38:48,082 INFO L226 Difference]: Without dead ends: 4920 [2022-03-03 17:38:48,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5834 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1835, Invalid=16255, Unknown=0, NotChecked=0, Total=18090 [2022-03-03 17:38:48,083 INFO L933 BasicCegarLoop]: 293 mSDtfsCounter, 1419 mSDsluCounter, 5558 mSDsCounter, 0 mSdLazyCounter, 2154 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1419 SdHoareTripleChecker+Valid, 5435 SdHoareTripleChecker+Invalid, 2302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 2154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 17:38:48,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1419 Valid, 5435 Invalid, 2302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 2154 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-03 17:38:48,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4920 states. [2022-03-03 17:38:48,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4920 to 2796. [2022-03-03 17:38:48,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2796 states, 2795 states have (on average 2.929159212880143) internal successors, (8187), 2795 states have internal predecessors, (8187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:48,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2796 states to 2796 states and 8187 transitions. [2022-03-03 17:38:48,143 INFO L78 Accepts]: Start accepts. Automaton has 2796 states and 8187 transitions. Word has length 74 [2022-03-03 17:38:48,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:38:48,144 INFO L470 AbstractCegarLoop]: Abstraction has 2796 states and 8187 transitions. [2022-03-03 17:38:48,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:48,144 INFO L276 IsEmpty]: Start isEmpty. Operand 2796 states and 8187 transitions. [2022-03-03 17:38:48,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:38:48,147 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:38:48,147 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:38:48,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2022-03-03 17:38:48,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:38:48,348 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:38:48,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:38:48,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1906029941, now seen corresponding path program 47 times [2022-03-03 17:38:48,348 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:38:48,348 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160109510] [2022-03-03 17:38:48,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:38:48,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:38:48,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:38:48,569 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:48,569 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:38:48,569 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160109510] [2022-03-03 17:38:48,570 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160109510] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:38:48,570 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810582390] [2022-03-03 17:38:48,570 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:38:48,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:38:48,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:38:48,571 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:38:48,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-03-03 17:38:48,646 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 17:38:48,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:38:48,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:38:48,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:38:49,116 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:49,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:38:49,760 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:49,760 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810582390] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:38:49,760 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:38:49,761 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-03-03 17:38:49,761 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842694622] [2022-03-03 17:38:49,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:38:49,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-03-03 17:38:49,761 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:38:49,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-03-03 17:38:49,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1467, Unknown=0, NotChecked=0, Total=1640 [2022-03-03 17:38:49,761 INFO L87 Difference]: Start difference. First operand 2796 states and 8187 transitions. Second operand has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:53,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:38:53,761 INFO L93 Difference]: Finished difference Result 5568 states and 15569 transitions. [2022-03-03 17:38:53,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-03-03 17:38:53,761 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:38:53,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:38:53,769 INFO L225 Difference]: With dead ends: 5568 [2022-03-03 17:38:53,769 INFO L226 Difference]: Without dead ends: 5466 [2022-03-03 17:38:53,769 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4992 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1621, Invalid=14129, Unknown=0, NotChecked=0, Total=15750 [2022-03-03 17:38:53,770 INFO L933 BasicCegarLoop]: 262 mSDtfsCounter, 1472 mSDsluCounter, 4883 mSDsCounter, 0 mSdLazyCounter, 2127 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 4809 SdHoareTripleChecker+Invalid, 2322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 2127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 17:38:53,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1472 Valid, 4809 Invalid, 2322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 2127 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-03 17:38:53,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5466 states. [2022-03-03 17:38:53,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5466 to 2896. [2022-03-03 17:38:53,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2896 states, 2895 states have (on average 2.9409326424870468) internal successors, (8514), 2895 states have internal predecessors, (8514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:53,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2896 states to 2896 states and 8514 transitions. [2022-03-03 17:38:53,816 INFO L78 Accepts]: Start accepts. Automaton has 2896 states and 8514 transitions. Word has length 74 [2022-03-03 17:38:53,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:38:53,816 INFO L470 AbstractCegarLoop]: Abstraction has 2896 states and 8514 transitions. [2022-03-03 17:38:53,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:53,816 INFO L276 IsEmpty]: Start isEmpty. Operand 2896 states and 8514 transitions. [2022-03-03 17:38:53,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:38:53,820 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:38:53,820 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:38:53,836 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2022-03-03 17:38:54,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2022-03-03 17:38:54,020 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:38:54,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:38:54,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1715064099, now seen corresponding path program 48 times [2022-03-03 17:38:54,021 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:38:54,021 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935891323] [2022-03-03 17:38:54,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:38:54,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:38:54,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:38:54,234 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:54,234 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:38:54,234 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935891323] [2022-03-03 17:38:54,234 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935891323] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:38:54,234 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872128512] [2022-03-03 17:38:54,234 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:38:54,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:38:54,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:38:54,244 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:38:54,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-03-03 17:38:54,313 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-03 17:38:54,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:38:54,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:38:54,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:38:54,788 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:54,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:38:55,409 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:55,409 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872128512] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:38:55,409 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:38:55,409 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-03-03 17:38:55,410 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210259612] [2022-03-03 17:38:55,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:38:55,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-03-03 17:38:55,410 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:38:55,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-03-03 17:38:55,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1467, Unknown=0, NotChecked=0, Total=1640 [2022-03-03 17:38:55,410 INFO L87 Difference]: Start difference. First operand 2896 states and 8514 transitions. Second operand has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:59,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:38:59,829 INFO L93 Difference]: Finished difference Result 5080 states and 14216 transitions. [2022-03-03 17:38:59,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2022-03-03 17:38:59,830 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:38:59,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:38:59,837 INFO L225 Difference]: With dead ends: 5080 [2022-03-03 17:38:59,837 INFO L226 Difference]: Without dead ends: 4912 [2022-03-03 17:38:59,838 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5624 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1764, Invalid=15528, Unknown=0, NotChecked=0, Total=17292 [2022-03-03 17:38:59,839 INFO L933 BasicCegarLoop]: 273 mSDtfsCounter, 1331 mSDsluCounter, 5991 mSDsCounter, 0 mSdLazyCounter, 2780 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1331 SdHoareTripleChecker+Valid, 5894 SdHoareTripleChecker+Invalid, 2943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 2780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:38:59,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1331 Valid, 5894 Invalid, 2943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 2780 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-03 17:38:59,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4912 states. [2022-03-03 17:38:59,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4912 to 2864. [2022-03-03 17:38:59,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2864 states, 2863 states have (on average 2.9332867621376177) internal successors, (8398), 2863 states have internal predecessors, (8398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:59,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2864 states to 2864 states and 8398 transitions. [2022-03-03 17:38:59,893 INFO L78 Accepts]: Start accepts. Automaton has 2864 states and 8398 transitions. Word has length 74 [2022-03-03 17:38:59,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:38:59,893 INFO L470 AbstractCegarLoop]: Abstraction has 2864 states and 8398 transitions. [2022-03-03 17:38:59,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:59,893 INFO L276 IsEmpty]: Start isEmpty. Operand 2864 states and 8398 transitions. [2022-03-03 17:38:59,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:38:59,896 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:38:59,896 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:38:59,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2022-03-03 17:39:00,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:39:00,097 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:39:00,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:39:00,097 INFO L85 PathProgramCache]: Analyzing trace with hash -69525451, now seen corresponding path program 49 times [2022-03-03 17:39:00,097 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:39:00,097 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250925334] [2022-03-03 17:39:00,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:39:00,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:39:00,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:39:00,300 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:00,301 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:39:00,301 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250925334] [2022-03-03 17:39:00,301 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250925334] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:39:00,301 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734756242] [2022-03-03 17:39:00,301 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:39:00,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:39:00,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:39:00,303 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:39:00,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-03-03 17:39:00,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:39:00,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:39:00,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:39:00,838 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:00,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:39:01,484 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:01,485 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734756242] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:39:01,485 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:39:01,485 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-03-03 17:39:01,485 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112314527] [2022-03-03 17:39:01,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:39:01,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-03-03 17:39:01,485 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:39:01,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-03-03 17:39:01,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=1463, Unknown=0, NotChecked=0, Total=1640 [2022-03-03 17:39:01,486 INFO L87 Difference]: Start difference. First operand 2864 states and 8398 transitions. Second operand has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:06,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:39:06,127 INFO L93 Difference]: Finished difference Result 6011 states and 16769 transitions. [2022-03-03 17:39:06,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2022-03-03 17:39:06,127 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:39:06,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:39:06,136 INFO L225 Difference]: With dead ends: 6011 [2022-03-03 17:39:06,136 INFO L226 Difference]: Without dead ends: 5858 [2022-03-03 17:39:06,137 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6417 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=2075, Invalid=17107, Unknown=0, NotChecked=0, Total=19182 [2022-03-03 17:39:06,137 INFO L933 BasicCegarLoop]: 288 mSDtfsCounter, 1565 mSDsluCounter, 5182 mSDsCounter, 0 mSdLazyCounter, 2370 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1565 SdHoareTripleChecker+Valid, 5145 SdHoareTripleChecker+Invalid, 2587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 2370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-03 17:39:06,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1565 Valid, 5145 Invalid, 2587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 2370 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-03 17:39:06,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5858 states. [2022-03-03 17:39:06,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5858 to 3012. [2022-03-03 17:39:06,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3012 states, 3011 states have (on average 2.948189970109598) internal successors, (8877), 3011 states have internal predecessors, (8877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:06,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3012 states to 3012 states and 8877 transitions. [2022-03-03 17:39:06,194 INFO L78 Accepts]: Start accepts. Automaton has 3012 states and 8877 transitions. Word has length 74 [2022-03-03 17:39:06,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:39:06,194 INFO L470 AbstractCegarLoop]: Abstraction has 3012 states and 8877 transitions. [2022-03-03 17:39:06,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:06,195 INFO L276 IsEmpty]: Start isEmpty. Operand 3012 states and 8877 transitions. [2022-03-03 17:39:06,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:39:06,198 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:39:06,198 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:39:06,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-03-03 17:39:06,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2022-03-03 17:39:06,399 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:39:06,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:39:06,399 INFO L85 PathProgramCache]: Analyzing trace with hash -743398707, now seen corresponding path program 50 times [2022-03-03 17:39:06,399 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:39:06,399 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400309738] [2022-03-03 17:39:06,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:39:06,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:39:06,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:39:06,611 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:06,611 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:39:06,611 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400309738] [2022-03-03 17:39:06,611 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400309738] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:39:06,611 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001123402] [2022-03-03 17:39:06,612 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:39:06,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:39:06,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:39:06,613 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:39:06,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-03-03 17:39:06,681 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:39:06,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:39:06,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:39:06,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:39:07,143 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:07,143 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:39:07,796 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:07,796 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001123402] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:39:07,796 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:39:07,796 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-03-03 17:39:07,796 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611390957] [2022-03-03 17:39:07,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:39:07,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-03-03 17:39:07,797 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:39:07,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-03-03 17:39:07,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1464, Unknown=0, NotChecked=0, Total=1640 [2022-03-03 17:39:07,797 INFO L87 Difference]: Start difference. First operand 3012 states and 8877 transitions. Second operand has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:13,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:39:13,124 INFO L93 Difference]: Finished difference Result 5413 states and 15179 transitions. [2022-03-03 17:39:13,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2022-03-03 17:39:13,124 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:39:13,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:39:13,132 INFO L225 Difference]: With dead ends: 5413 [2022-03-03 17:39:13,132 INFO L226 Difference]: Without dead ends: 5179 [2022-03-03 17:39:13,133 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7768 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=2381, Invalid=19969, Unknown=0, NotChecked=0, Total=22350 [2022-03-03 17:39:13,133 INFO L933 BasicCegarLoop]: 280 mSDtfsCounter, 1402 mSDsluCounter, 6020 mSDsCounter, 0 mSdLazyCounter, 2853 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1402 SdHoareTripleChecker+Valid, 5912 SdHoareTripleChecker+Invalid, 3029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 2853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:39:13,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1402 Valid, 5912 Invalid, 3029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 2853 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-03 17:39:13,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5179 states. [2022-03-03 17:39:13,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5179 to 2892. [2022-03-03 17:39:13,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2892 states, 2891 states have (on average 2.9356624005534417) internal successors, (8487), 2891 states have internal predecessors, (8487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:13,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2892 states to 2892 states and 8487 transitions. [2022-03-03 17:39:13,176 INFO L78 Accepts]: Start accepts. Automaton has 2892 states and 8487 transitions. Word has length 74 [2022-03-03 17:39:13,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:39:13,176 INFO L470 AbstractCegarLoop]: Abstraction has 2892 states and 8487 transitions. [2022-03-03 17:39:13,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:13,176 INFO L276 IsEmpty]: Start isEmpty. Operand 2892 states and 8487 transitions. [2022-03-03 17:39:13,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:39:13,179 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:39:13,180 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:39:13,198 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2022-03-03 17:39:13,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2022-03-03 17:39:13,380 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:39:13,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:39:13,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1084664455, now seen corresponding path program 51 times [2022-03-03 17:39:13,380 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:39:13,381 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501281899] [2022-03-03 17:39:13,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:39:13,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:39:13,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:39:13,576 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:13,576 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:39:13,576 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501281899] [2022-03-03 17:39:13,576 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501281899] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:39:13,576 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20583519] [2022-03-03 17:39:13,576 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:39:13,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:39:13,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:39:13,577 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:39:13,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-03-03 17:39:13,671 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-03 17:39:13,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:39:13,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:39:13,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:39:14,147 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:14,148 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:39:14,668 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:14,668 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20583519] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:39:14,668 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:39:14,668 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-03-03 17:39:14,668 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620762796] [2022-03-03 17:39:14,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:39:14,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-03-03 17:39:14,668 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:39:14,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-03-03 17:39:14,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=1425, Unknown=0, NotChecked=0, Total=1640 [2022-03-03 17:39:14,669 INFO L87 Difference]: Start difference. First operand 2892 states and 8487 transitions. Second operand has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:16,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:39:16,358 INFO L93 Difference]: Finished difference Result 4228 states and 12033 transitions. [2022-03-03 17:39:16,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-03-03 17:39:16,359 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:39:16,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:39:16,365 INFO L225 Difference]: With dead ends: 4228 [2022-03-03 17:39:16,365 INFO L226 Difference]: Without dead ends: 4126 [2022-03-03 17:39:16,365 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2125 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=873, Invalid=6609, Unknown=0, NotChecked=0, Total=7482 [2022-03-03 17:39:16,365 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 1009 mSDsluCounter, 2623 mSDsCounter, 0 mSdLazyCounter, 1239 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1009 SdHoareTripleChecker+Valid, 2673 SdHoareTripleChecker+Invalid, 1368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 1239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:39:16,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1009 Valid, 2673 Invalid, 1368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 1239 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:39:16,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4126 states. [2022-03-03 17:39:16,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4126 to 3090. [2022-03-03 17:39:16,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3090 states, 3089 states have (on average 2.9494982194885075) internal successors, (9111), 3089 states have internal predecessors, (9111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:16,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3090 states to 3090 states and 9111 transitions. [2022-03-03 17:39:16,402 INFO L78 Accepts]: Start accepts. Automaton has 3090 states and 9111 transitions. Word has length 74 [2022-03-03 17:39:16,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:39:16,402 INFO L470 AbstractCegarLoop]: Abstraction has 3090 states and 9111 transitions. [2022-03-03 17:39:16,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:16,402 INFO L276 IsEmpty]: Start isEmpty. Operand 3090 states and 9111 transitions. [2022-03-03 17:39:16,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:39:16,406 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:39:16,406 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:39:16,422 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2022-03-03 17:39:16,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:39:16,606 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:39:16,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:39:16,607 INFO L85 PathProgramCache]: Analyzing trace with hash 440163693, now seen corresponding path program 52 times [2022-03-03 17:39:16,607 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:39:16,607 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488737003] [2022-03-03 17:39:16,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:39:16,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:39:16,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:39:16,805 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:16,806 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:39:16,806 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488737003] [2022-03-03 17:39:16,806 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488737003] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:39:16,806 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463845936] [2022-03-03 17:39:16,806 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:39:16,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:39:16,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:39:16,807 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:39:16,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-03-03 17:39:16,879 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:39:16,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:39:16,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:39:16,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:39:17,357 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:17,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:39:17,817 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:17,817 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463845936] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:39:17,817 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:39:17,817 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-03-03 17:39:17,817 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616216183] [2022-03-03 17:39:17,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:39:17,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-03-03 17:39:17,818 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:39:17,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-03-03 17:39:17,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=1414, Unknown=0, NotChecked=0, Total=1640 [2022-03-03 17:39:17,818 INFO L87 Difference]: Start difference. First operand 3090 states and 9111 transitions. Second operand has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:23,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:39:23,218 INFO L93 Difference]: Finished difference Result 6445 states and 17787 transitions. [2022-03-03 17:39:23,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2022-03-03 17:39:23,219 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:39:23,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:39:23,228 INFO L225 Difference]: With dead ends: 6445 [2022-03-03 17:39:23,228 INFO L226 Difference]: Without dead ends: 6241 [2022-03-03 17:39:23,229 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10039 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=3586, Invalid=24806, Unknown=0, NotChecked=0, Total=28392 [2022-03-03 17:39:23,229 INFO L933 BasicCegarLoop]: 336 mSDtfsCounter, 2052 mSDsluCounter, 6342 mSDsCounter, 0 mSdLazyCounter, 3310 mSolverCounterSat, 299 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2052 SdHoareTripleChecker+Valid, 6282 SdHoareTripleChecker+Invalid, 3609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 3310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:39:23,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2052 Valid, 6282 Invalid, 3609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [299 Valid, 3310 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-03 17:39:23,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6241 states. [2022-03-03 17:39:23,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6241 to 3246. [2022-03-03 17:39:23,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3246 states, 3245 states have (on average 2.9781201848998458) internal successors, (9664), 3245 states have internal predecessors, (9664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:23,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3246 states to 3246 states and 9664 transitions. [2022-03-03 17:39:23,282 INFO L78 Accepts]: Start accepts. Automaton has 3246 states and 9664 transitions. Word has length 74 [2022-03-03 17:39:23,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:39:23,282 INFO L470 AbstractCegarLoop]: Abstraction has 3246 states and 9664 transitions. [2022-03-03 17:39:23,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:23,283 INFO L276 IsEmpty]: Start isEmpty. Operand 3246 states and 9664 transitions. [2022-03-03 17:39:23,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:39:23,287 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:39:23,287 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:39:23,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2022-03-03 17:39:23,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2022-03-03 17:39:23,487 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:39:23,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:39:23,488 INFO L85 PathProgramCache]: Analyzing trace with hash -233709563, now seen corresponding path program 53 times [2022-03-03 17:39:23,488 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:39:23,488 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725645255] [2022-03-03 17:39:23,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:39:23,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:39:23,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:39:23,691 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:23,691 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:39:23,691 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725645255] [2022-03-03 17:39:23,691 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725645255] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:39:23,691 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616208009] [2022-03-03 17:39:23,692 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:39:23,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:39:23,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:39:23,693 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:39:23,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-03-03 17:39:23,757 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 17:39:23,758 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:39:23,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:39:23,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:39:24,213 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:24,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:39:24,670 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:24,670 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616208009] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:39:24,670 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:39:24,670 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-03-03 17:39:24,670 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371050255] [2022-03-03 17:39:24,670 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:39:24,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-03-03 17:39:24,671 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:39:24,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-03-03 17:39:24,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=1409, Unknown=0, NotChecked=0, Total=1640 [2022-03-03 17:39:24,671 INFO L87 Difference]: Start difference. First operand 3246 states and 9664 transitions. Second operand has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:28,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:39:28,299 INFO L93 Difference]: Finished difference Result 5507 states and 15504 transitions. [2022-03-03 17:39:28,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-03-03 17:39:28,299 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:39:28,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:39:28,306 INFO L225 Difference]: With dead ends: 5507 [2022-03-03 17:39:28,307 INFO L226 Difference]: Without dead ends: 5147 [2022-03-03 17:39:28,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6105 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2686, Invalid=15674, Unknown=0, NotChecked=0, Total=18360 [2022-03-03 17:39:28,308 INFO L933 BasicCegarLoop]: 248 mSDtfsCounter, 1526 mSDsluCounter, 4139 mSDsCounter, 0 mSdLazyCounter, 2299 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1526 SdHoareTripleChecker+Valid, 4101 SdHoareTripleChecker+Invalid, 2524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 2299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 17:39:28,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1526 Valid, 4101 Invalid, 2524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 2299 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-03 17:39:28,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5147 states. [2022-03-03 17:39:28,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5147 to 3221. [2022-03-03 17:39:28,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3221 states, 3220 states have (on average 2.966770186335404) internal successors, (9553), 3220 states have internal predecessors, (9553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:28,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3221 states to 3221 states and 9553 transitions. [2022-03-03 17:39:28,351 INFO L78 Accepts]: Start accepts. Automaton has 3221 states and 9553 transitions. Word has length 74 [2022-03-03 17:39:28,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:39:28,352 INFO L470 AbstractCegarLoop]: Abstraction has 3221 states and 9553 transitions. [2022-03-03 17:39:28,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:28,352 INFO L276 IsEmpty]: Start isEmpty. Operand 3221 states and 9553 transitions. [2022-03-03 17:39:28,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:39:28,356 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:39:28,356 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:39:28,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2022-03-03 17:39:28,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2022-03-03 17:39:28,556 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:39:28,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:39:28,556 INFO L85 PathProgramCache]: Analyzing trace with hash 126938247, now seen corresponding path program 54 times [2022-03-03 17:39:28,557 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:39:28,557 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999298776] [2022-03-03 17:39:28,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:39:28,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:39:28,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:39:28,764 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:28,765 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:39:28,765 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999298776] [2022-03-03 17:39:28,765 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999298776] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:39:28,765 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36309416] [2022-03-03 17:39:28,765 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:39:28,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:39:28,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:39:28,766 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:39:28,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-03-03 17:39:28,833 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-03 17:39:28,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:39:28,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:39:28,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:39:29,304 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:29,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:39:29,967 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:29,968 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36309416] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:39:29,968 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:39:29,968 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-03-03 17:39:29,968 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872548884] [2022-03-03 17:39:29,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:39:29,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-03-03 17:39:29,968 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:39:29,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-03-03 17:39:29,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1449, Unknown=0, NotChecked=0, Total=1640 [2022-03-03 17:39:29,969 INFO L87 Difference]: Start difference. First operand 3221 states and 9553 transitions. Second operand has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:35,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:39:35,691 INFO L93 Difference]: Finished difference Result 6719 states and 18885 transitions. [2022-03-03 17:39:35,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2022-03-03 17:39:35,691 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:39:35,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:39:35,700 INFO L225 Difference]: With dead ends: 6719 [2022-03-03 17:39:35,700 INFO L226 Difference]: Without dead ends: 6566 [2022-03-03 17:39:35,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7810 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=2198, Invalid=20452, Unknown=0, NotChecked=0, Total=22650 [2022-03-03 17:39:35,702 INFO L933 BasicCegarLoop]: 288 mSDtfsCounter, 1402 mSDsluCounter, 5473 mSDsCounter, 0 mSdLazyCounter, 2873 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1402 SdHoareTripleChecker+Valid, 5456 SdHoareTripleChecker+Invalid, 3046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 2873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:39:35,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1402 Valid, 5456 Invalid, 3046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 2873 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-03 17:39:35,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6566 states. [2022-03-03 17:39:35,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6566 to 3397. [2022-03-03 17:39:35,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3397 states, 3396 states have (on average 2.989693757361602) internal successors, (10153), 3396 states have internal predecessors, (10153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:35,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3397 states to 3397 states and 10153 transitions. [2022-03-03 17:39:35,757 INFO L78 Accepts]: Start accepts. Automaton has 3397 states and 10153 transitions. Word has length 74 [2022-03-03 17:39:35,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:39:35,757 INFO L470 AbstractCegarLoop]: Abstraction has 3397 states and 10153 transitions. [2022-03-03 17:39:35,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:35,758 INFO L276 IsEmpty]: Start isEmpty. Operand 3397 states and 10153 transitions. [2022-03-03 17:39:35,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:39:35,762 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:39:35,762 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:39:35,778 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2022-03-03 17:39:35,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:39:35,962 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:39:35,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:39:35,963 INFO L85 PathProgramCache]: Analyzing trace with hash -546935009, now seen corresponding path program 55 times [2022-03-03 17:39:35,963 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:39:35,963 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251393800] [2022-03-03 17:39:35,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:39:35,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:39:35,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:39:36,170 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:36,171 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:39:36,171 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251393800] [2022-03-03 17:39:36,171 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251393800] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:39:36,171 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390929680] [2022-03-03 17:39:36,171 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:39:36,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:39:36,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:39:36,172 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:39:36,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-03-03 17:39:36,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:39:36,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:39:36,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:39:36,722 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:36,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:39:37,400 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:37,400 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390929680] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:39:37,400 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:39:37,400 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-03-03 17:39:37,400 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295404662] [2022-03-03 17:39:37,400 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:39:37,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-03-03 17:39:37,401 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:39:37,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-03-03 17:39:37,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1450, Unknown=0, NotChecked=0, Total=1640 [2022-03-03 17:39:37,401 INFO L87 Difference]: Start difference. First operand 3397 states and 10153 transitions. Second operand has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:42,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:39:42,818 INFO L93 Difference]: Finished difference Result 6005 states and 16919 transitions. [2022-03-03 17:39:42,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2022-03-03 17:39:42,819 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:39:42,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:39:42,828 INFO L225 Difference]: With dead ends: 6005 [2022-03-03 17:39:42,828 INFO L226 Difference]: Without dead ends: 5762 [2022-03-03 17:39:42,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8101 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=2207, Invalid=21049, Unknown=0, NotChecked=0, Total=23256 [2022-03-03 17:39:42,829 INFO L933 BasicCegarLoop]: 313 mSDtfsCounter, 1517 mSDsluCounter, 4912 mSDsCounter, 0 mSdLazyCounter, 2604 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1517 SdHoareTripleChecker+Valid, 4939 SdHoareTripleChecker+Invalid, 2796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 2604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:39:42,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1517 Valid, 4939 Invalid, 2796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 2604 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-03 17:39:42,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5762 states. [2022-03-03 17:39:42,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5762 to 3365. [2022-03-03 17:39:42,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3365 states, 3364 states have (on average 2.977705112960761) internal successors, (10017), 3364 states have internal predecessors, (10017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:42,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3365 states to 3365 states and 10017 transitions. [2022-03-03 17:39:42,889 INFO L78 Accepts]: Start accepts. Automaton has 3365 states and 10017 transitions. Word has length 74 [2022-03-03 17:39:42,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:39:42,889 INFO L470 AbstractCegarLoop]: Abstraction has 3365 states and 10017 transitions. [2022-03-03 17:39:42,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:42,889 INFO L276 IsEmpty]: Start isEmpty. Operand 3365 states and 10017 transitions. [2022-03-03 17:39:42,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:39:42,893 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:39:42,893 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:39:42,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2022-03-03 17:39:43,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:39:43,096 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:39:43,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:39:43,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1507884503, now seen corresponding path program 56 times [2022-03-03 17:39:43,096 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:39:43,096 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028694578] [2022-03-03 17:39:43,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:39:43,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:39:43,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:39:43,289 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:43,289 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:39:43,290 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028694578] [2022-03-03 17:39:43,290 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028694578] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:39:43,290 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058796989] [2022-03-03 17:39:43,290 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:39:43,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:39:43,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:39:43,291 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:39:43,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-03-03 17:39:43,357 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:39:43,357 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:39:43,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:39:43,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:39:43,851 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:43,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:39:44,502 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:44,502 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058796989] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:39:44,502 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:39:44,503 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-03-03 17:39:44,503 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964310890] [2022-03-03 17:39:44,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:39:44,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-03-03 17:39:44,512 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:39:44,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-03-03 17:39:44,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1455, Unknown=0, NotChecked=0, Total=1640 [2022-03-03 17:39:44,512 INFO L87 Difference]: Start difference. First operand 3365 states and 10017 transitions. Second operand has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:49,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:39:49,389 INFO L93 Difference]: Finished difference Result 6318 states and 17865 transitions. [2022-03-03 17:39:49,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2022-03-03 17:39:49,389 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:39:49,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:39:49,399 INFO L225 Difference]: With dead ends: 6318 [2022-03-03 17:39:49,399 INFO L226 Difference]: Without dead ends: 6165 [2022-03-03 17:39:49,401 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5970 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1786, Invalid=16304, Unknown=0, NotChecked=0, Total=18090 [2022-03-03 17:39:49,401 INFO L933 BasicCegarLoop]: 294 mSDtfsCounter, 1066 mSDsluCounter, 7119 mSDsCounter, 0 mSdLazyCounter, 3579 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1066 SdHoareTripleChecker+Valid, 6998 SdHoareTripleChecker+Invalid, 3724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 3579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:39:49,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1066 Valid, 6998 Invalid, 3724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 3579 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-03 17:39:49,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6165 states. [2022-03-03 17:39:49,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6165 to 3465. [2022-03-03 17:39:49,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3465 states, 3464 states have (on average 2.9988452655889146) internal successors, (10388), 3464 states have internal predecessors, (10388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:49,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3465 states to 3465 states and 10388 transitions. [2022-03-03 17:39:49,469 INFO L78 Accepts]: Start accepts. Automaton has 3465 states and 10388 transitions. Word has length 74 [2022-03-03 17:39:49,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:39:49,469 INFO L470 AbstractCegarLoop]: Abstraction has 3465 states and 10388 transitions. [2022-03-03 17:39:49,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:49,469 INFO L276 IsEmpty]: Start isEmpty. Operand 3465 states and 10388 transitions. [2022-03-03 17:39:49,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:39:49,474 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:39:49,474 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:39:49,490 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2022-03-03 17:39:49,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:39:49,674 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:39:49,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:39:49,675 INFO L85 PathProgramCache]: Analyzing trace with hash 2113209537, now seen corresponding path program 57 times [2022-03-03 17:39:49,675 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:39:49,675 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377853119] [2022-03-03 17:39:49,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:39:49,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:39:49,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:39:49,862 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:49,862 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:39:49,862 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377853119] [2022-03-03 17:39:49,863 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377853119] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:39:49,863 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729751469] [2022-03-03 17:39:49,863 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:39:49,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:39:49,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:39:49,864 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:39:49,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-03-03 17:39:49,941 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 17:39:49,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:39:49,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:39:49,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:39:50,400 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:50,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:39:51,063 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:51,063 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729751469] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:39:51,063 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:39:51,063 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-03-03 17:39:51,063 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169065805] [2022-03-03 17:39:51,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:39:51,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-03-03 17:39:51,063 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:39:51,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-03-03 17:39:51,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1452, Unknown=0, NotChecked=0, Total=1640 [2022-03-03 17:39:51,064 INFO L87 Difference]: Start difference. First operand 3465 states and 10388 transitions. Second operand has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:55,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:39:55,216 INFO L93 Difference]: Finished difference Result 5684 states and 16183 transitions. [2022-03-03 17:39:55,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2022-03-03 17:39:55,216 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:39:55,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:39:55,225 INFO L225 Difference]: With dead ends: 5684 [2022-03-03 17:39:55,225 INFO L226 Difference]: Without dead ends: 5441 [2022-03-03 17:39:55,226 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5355 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1628, Invalid=14884, Unknown=0, NotChecked=0, Total=16512 [2022-03-03 17:39:55,226 INFO L933 BasicCegarLoop]: 300 mSDtfsCounter, 1025 mSDsluCounter, 6165 mSDsCounter, 0 mSdLazyCounter, 3131 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1025 SdHoareTripleChecker+Valid, 6123 SdHoareTripleChecker+Invalid, 3279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 3131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:39:55,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1025 Valid, 6123 Invalid, 3279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 3131 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-03 17:39:55,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5441 states. [2022-03-03 17:39:55,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5441 to 3401. [2022-03-03 17:39:55,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3401 states, 3400 states have (on average 2.981176470588235) internal successors, (10136), 3400 states have internal predecessors, (10136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:55,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3401 states to 3401 states and 10136 transitions. [2022-03-03 17:39:55,293 INFO L78 Accepts]: Start accepts. Automaton has 3401 states and 10136 transitions. Word has length 74 [2022-03-03 17:39:55,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:39:55,294 INFO L470 AbstractCegarLoop]: Abstraction has 3401 states and 10136 transitions. [2022-03-03 17:39:55,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:55,294 INFO L276 IsEmpty]: Start isEmpty. Operand 3401 states and 10136 transitions. [2022-03-03 17:39:55,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:39:55,298 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:39:55,298 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:39:55,316 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2022-03-03 17:39:55,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2022-03-03 17:39:55,511 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:39:55,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:39:55,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1327806731, now seen corresponding path program 58 times [2022-03-03 17:39:55,512 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:39:55,512 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822287687] [2022-03-03 17:39:55,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:39:55,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:39:55,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:39:55,693 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:55,693 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:39:55,693 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822287687] [2022-03-03 17:39:55,693 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822287687] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:39:55,693 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977282062] [2022-03-03 17:39:55,693 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:39:55,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:39:55,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:39:55,695 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:39:55,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-03-03 17:39:55,758 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:39:55,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:39:55,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:39:55,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:39:56,208 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:56,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:39:56,854 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:56,854 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977282062] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:39:56,854 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:39:56,854 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-03-03 17:39:56,855 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900559059] [2022-03-03 17:39:56,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:39:56,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-03-03 17:39:56,855 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:39:56,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-03-03 17:39:56,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1461, Unknown=0, NotChecked=0, Total=1640 [2022-03-03 17:39:56,855 INFO L87 Difference]: Start difference. First operand 3401 states and 10136 transitions. Second operand has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:02,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:40:02,014 INFO L93 Difference]: Finished difference Result 6166 states and 17524 transitions. [2022-03-03 17:40:02,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2022-03-03 17:40:02,015 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:40:02,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:40:02,024 INFO L225 Difference]: With dead ends: 6166 [2022-03-03 17:40:02,024 INFO L226 Difference]: Without dead ends: 5953 [2022-03-03 17:40:02,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7977 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=2229, Invalid=21027, Unknown=0, NotChecked=0, Total=23256 [2022-03-03 17:40:02,026 INFO L933 BasicCegarLoop]: 286 mSDtfsCounter, 1150 mSDsluCounter, 5019 mSDsCounter, 0 mSdLazyCounter, 2363 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1150 SdHoareTripleChecker+Valid, 5053 SdHoareTripleChecker+Invalid, 2513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 2363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-03 17:40:02,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1150 Valid, 5053 Invalid, 2513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 2363 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-03 17:40:02,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5953 states. [2022-03-03 17:40:02,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5953 to 3585. [2022-03-03 17:40:02,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3585 states, 3584 states have (on average 2.9815848214285716) internal successors, (10686), 3584 states have internal predecessors, (10686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:02,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3585 states to 3585 states and 10686 transitions. [2022-03-03 17:40:02,084 INFO L78 Accepts]: Start accepts. Automaton has 3585 states and 10686 transitions. Word has length 74 [2022-03-03 17:40:02,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:40:02,084 INFO L470 AbstractCegarLoop]: Abstraction has 3585 states and 10686 transitions. [2022-03-03 17:40:02,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:02,085 INFO L276 IsEmpty]: Start isEmpty. Operand 3585 states and 10686 transitions. [2022-03-03 17:40:02,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:40:02,089 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:40:02,089 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:40:02,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2022-03-03 17:40:02,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60 [2022-03-03 17:40:02,289 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:40:02,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:40:02,289 INFO L85 PathProgramCache]: Analyzing trace with hash -485881909, now seen corresponding path program 59 times [2022-03-03 17:40:02,290 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:40:02,290 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131113164] [2022-03-03 17:40:02,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:40:02,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:40:02,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:40:02,512 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:40:02,512 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:40:02,512 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131113164] [2022-03-03 17:40:02,512 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131113164] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:40:02,512 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295260930] [2022-03-03 17:40:02,512 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:40:02,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:40:02,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:40:02,513 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:40:02,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-03-03 17:40:02,580 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 17:40:02,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:40:02,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:40:02,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:40:03,037 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:40:03,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:40:03,667 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:40:03,667 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295260930] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:40:03,667 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:40:03,667 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-03-03 17:40:03,668 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547053769] [2022-03-03 17:40:03,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:40:03,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-03-03 17:40:03,668 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:40:03,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-03-03 17:40:03,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=1463, Unknown=0, NotChecked=0, Total=1640 [2022-03-03 17:40:03,668 INFO L87 Difference]: Start difference. First operand 3585 states and 10686 transitions. Second operand has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:09,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:40:09,454 INFO L93 Difference]: Finished difference Result 7074 states and 20143 transitions. [2022-03-03 17:40:09,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2022-03-03 17:40:09,454 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:40:09,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:40:09,465 INFO L225 Difference]: With dead ends: 7074 [2022-03-03 17:40:09,465 INFO L226 Difference]: Without dead ends: 6921 [2022-03-03 17:40:09,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8503 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=2703, Invalid=21477, Unknown=0, NotChecked=0, Total=24180 [2022-03-03 17:40:09,466 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 1146 mSDsluCounter, 7164 mSDsCounter, 0 mSdLazyCounter, 3642 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1146 SdHoareTripleChecker+Valid, 7146 SdHoareTripleChecker+Invalid, 3804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 3642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:40:09,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1146 Valid, 7146 Invalid, 3804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 3642 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-03 17:40:09,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6921 states. [2022-03-03 17:40:09,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6921 to 3673. [2022-03-03 17:40:09,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3673 states, 3672 states have (on average 2.9891067538126364) internal successors, (10976), 3672 states have internal predecessors, (10976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:09,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3673 states to 3673 states and 10976 transitions. [2022-03-03 17:40:09,533 INFO L78 Accepts]: Start accepts. Automaton has 3673 states and 10976 transitions. Word has length 74 [2022-03-03 17:40:09,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:40:09,533 INFO L470 AbstractCegarLoop]: Abstraction has 3673 states and 10976 transitions. [2022-03-03 17:40:09,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:09,534 INFO L276 IsEmpty]: Start isEmpty. Operand 3673 states and 10976 transitions. [2022-03-03 17:40:09,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:40:09,538 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:40:09,538 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:40:09,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2022-03-03 17:40:09,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2022-03-03 17:40:09,754 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:40:09,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:40:09,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1159755165, now seen corresponding path program 60 times [2022-03-03 17:40:09,755 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:40:09,755 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476286315] [2022-03-03 17:40:09,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:40:09,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:40:09,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:40:09,977 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:40:09,977 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:40:09,977 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476286315] [2022-03-03 17:40:09,977 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476286315] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:40:09,977 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921158611] [2022-03-03 17:40:09,977 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:40:09,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:40:09,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:40:09,979 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:40:09,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-03-03 17:40:10,049 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-03 17:40:10,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:40:10,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:40:10,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:40:10,508 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:40:10,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:40:11,143 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:40:11,143 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1921158611] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:40:11,143 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:40:11,143 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-03-03 17:40:11,144 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565264938] [2022-03-03 17:40:11,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:40:11,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-03-03 17:40:11,144 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:40:11,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-03-03 17:40:11,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1464, Unknown=0, NotChecked=0, Total=1640 [2022-03-03 17:40:11,144 INFO L87 Difference]: Start difference. First operand 3673 states and 10976 transitions. Second operand has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:17,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:40:17,272 INFO L93 Difference]: Finished difference Result 6595 states and 18831 transitions. [2022-03-03 17:40:17,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2022-03-03 17:40:17,272 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:40:17,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:40:17,282 INFO L225 Difference]: With dead ends: 6595 [2022-03-03 17:40:17,283 INFO L226 Difference]: Without dead ends: 6397 [2022-03-03 17:40:17,284 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9186 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=2527, Invalid=23233, Unknown=0, NotChecked=0, Total=25760 [2022-03-03 17:40:17,284 INFO L933 BasicCegarLoop]: 306 mSDtfsCounter, 1128 mSDsluCounter, 6646 mSDsCounter, 0 mSdLazyCounter, 3397 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1128 SdHoareTripleChecker+Valid, 6625 SdHoareTripleChecker+Invalid, 3577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 3397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:40:17,285 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1128 Valid, 6625 Invalid, 3577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 3397 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-03 17:40:17,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6397 states. [2022-03-03 17:40:17,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6397 to 3669. [2022-03-03 17:40:17,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3669 states, 3668 states have (on average 2.9850054525627043) internal successors, (10949), 3668 states have internal predecessors, (10949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:17,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3669 states to 3669 states and 10949 transitions. [2022-03-03 17:40:17,357 INFO L78 Accepts]: Start accepts. Automaton has 3669 states and 10949 transitions. Word has length 74 [2022-03-03 17:40:17,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:40:17,357 INFO L470 AbstractCegarLoop]: Abstraction has 3669 states and 10949 transitions. [2022-03-03 17:40:17,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:17,357 INFO L276 IsEmpty]: Start isEmpty. Operand 3669 states and 10949 transitions. [2022-03-03 17:40:17,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:40:17,362 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:40:17,362 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:40:17,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2022-03-03 17:40:17,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:40:17,563 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:40:17,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:40:17,564 INFO L85 PathProgramCache]: Analyzing trace with hash -410298985, now seen corresponding path program 61 times [2022-03-03 17:40:17,564 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:40:17,564 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558818005] [2022-03-03 17:40:17,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:40:17,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:40:17,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:40:17,738 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:40:17,738 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:40:17,738 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558818005] [2022-03-03 17:40:17,738 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558818005] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:40:17,738 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926695725] [2022-03-03 17:40:17,738 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:40:17,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:40:17,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:40:17,739 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:40:17,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-03-03 17:40:17,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:40:17,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:40:17,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:40:18,254 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:40:18,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:40:18,710 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:40:18,710 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926695725] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:40:18,710 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:40:18,710 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-03-03 17:40:18,710 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634347401] [2022-03-03 17:40:18,711 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:40:18,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-03-03 17:40:18,711 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:40:18,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-03-03 17:40:18,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=1365, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 17:40:18,711 INFO L87 Difference]: Start difference. First operand 3669 states and 10949 transitions. Second operand has 40 states, 40 states have (on average 3.75) internal successors, (150), 40 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:20,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:40:20,899 INFO L93 Difference]: Finished difference Result 5647 states and 16189 transitions. [2022-03-03 17:40:20,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-03-03 17:40:20,900 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.75) internal successors, (150), 40 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:40:20,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:40:20,909 INFO L225 Difference]: With dead ends: 5647 [2022-03-03 17:40:20,909 INFO L226 Difference]: Without dead ends: 5545 [2022-03-03 17:40:20,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3196 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1246, Invalid=9056, Unknown=0, NotChecked=0, Total=10302 [2022-03-03 17:40:20,911 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 853 mSDsluCounter, 3941 mSDsCounter, 0 mSdLazyCounter, 1779 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 3942 SdHoareTripleChecker+Invalid, 1869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:40:20,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [853 Valid, 3942 Invalid, 1869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1779 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:40:20,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5545 states. [2022-03-03 17:40:20,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5545 to 3825. [2022-03-03 17:40:20,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3825 states, 3824 states have (on average 2.9973849372384938) internal successors, (11462), 3824 states have internal predecessors, (11462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:20,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3825 states to 3825 states and 11462 transitions. [2022-03-03 17:40:20,981 INFO L78 Accepts]: Start accepts. Automaton has 3825 states and 11462 transitions. Word has length 74 [2022-03-03 17:40:20,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:40:20,982 INFO L470 AbstractCegarLoop]: Abstraction has 3825 states and 11462 transitions. [2022-03-03 17:40:20,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.75) internal successors, (150), 40 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:20,982 INFO L276 IsEmpty]: Start isEmpty. Operand 3825 states and 11462 transitions. [2022-03-03 17:40:20,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:40:20,987 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:40:20,987 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:40:21,003 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2022-03-03 17:40:21,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:40:21,187 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:40:21,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:40:21,188 INFO L85 PathProgramCache]: Analyzing trace with hash -389581599, now seen corresponding path program 62 times [2022-03-03 17:40:21,188 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:40:21,188 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801285867] [2022-03-03 17:40:21,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:40:21,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:40:21,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:40:21,376 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:40:21,376 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:40:21,376 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801285867] [2022-03-03 17:40:21,376 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801285867] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:40:21,376 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069796203] [2022-03-03 17:40:21,376 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:40:21,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:40:21,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:40:21,377 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:40:21,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-03-03 17:40:21,446 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:40:21,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:40:21,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:40:21,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:40:21,928 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:40:21,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:40:22,406 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:40:22,407 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069796203] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:40:22,407 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:40:22,407 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-03-03 17:40:22,407 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060488595] [2022-03-03 17:40:22,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:40:22,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-03-03 17:40:22,407 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:40:22,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-03-03 17:40:22,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=1436, Unknown=0, NotChecked=0, Total=1640 [2022-03-03 17:40:22,408 INFO L87 Difference]: Start difference. First operand 3825 states and 11462 transitions. Second operand has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:25,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:40:25,135 INFO L93 Difference]: Finished difference Result 5455 states and 15725 transitions. [2022-03-03 17:40:25,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-03-03 17:40:25,135 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:40:25,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:40:25,143 INFO L225 Difference]: With dead ends: 5455 [2022-03-03 17:40:25,143 INFO L226 Difference]: Without dead ends: 5353 [2022-03-03 17:40:25,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2678 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1115, Invalid=7815, Unknown=0, NotChecked=0, Total=8930 [2022-03-03 17:40:25,144 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 874 mSDsluCounter, 4244 mSDsCounter, 0 mSdLazyCounter, 1927 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 4228 SdHoareTripleChecker+Invalid, 2034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 17:40:25,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [874 Valid, 4228 Invalid, 2034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1927 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 17:40:25,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5353 states. [2022-03-03 17:40:25,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5353 to 3853. [2022-03-03 17:40:25,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3853 states, 3852 states have (on average 2.9976635514018692) internal successors, (11547), 3852 states have internal predecessors, (11547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:25,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3853 states to 3853 states and 11547 transitions. [2022-03-03 17:40:25,199 INFO L78 Accepts]: Start accepts. Automaton has 3853 states and 11547 transitions. Word has length 74 [2022-03-03 17:40:25,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:40:25,200 INFO L470 AbstractCegarLoop]: Abstraction has 3853 states and 11547 transitions. [2022-03-03 17:40:25,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:25,200 INFO L276 IsEmpty]: Start isEmpty. Operand 3853 states and 11547 transitions. [2022-03-03 17:40:25,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:40:25,205 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:40:25,205 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:40:25,222 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2022-03-03 17:40:25,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2022-03-03 17:40:25,405 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:40:25,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:40:25,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1034082361, now seen corresponding path program 63 times [2022-03-03 17:40:25,406 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:40:25,406 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15749649] [2022-03-03 17:40:25,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:40:25,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:40:25,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:40:25,592 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:40:25,592 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:40:25,592 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15749649] [2022-03-03 17:40:25,592 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15749649] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:40:25,592 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477135081] [2022-03-03 17:40:25,592 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:40:25,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:40:25,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:40:25,594 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:40:25,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-03-03 17:40:25,667 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 17:40:25,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:40:25,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:40:25,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:40:26,120 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:40:26,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:40:26,633 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:40:26,634 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477135081] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:40:26,634 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:40:26,634 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-03-03 17:40:26,634 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612764614] [2022-03-03 17:40:26,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:40:26,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-03-03 17:40:26,634 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:40:26,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-03-03 17:40:26,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=1432, Unknown=0, NotChecked=0, Total=1640 [2022-03-03 17:40:26,635 INFO L87 Difference]: Start difference. First operand 3853 states and 11547 transitions. Second operand has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:34,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:40:34,312 INFO L93 Difference]: Finished difference Result 8370 states and 23518 transitions. [2022-03-03 17:40:34,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2022-03-03 17:40:34,312 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:40:34,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:40:34,324 INFO L225 Difference]: With dead ends: 8370 [2022-03-03 17:40:34,325 INFO L226 Difference]: Without dead ends: 8136 [2022-03-03 17:40:34,326 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16880 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=5486, Invalid=38404, Unknown=0, NotChecked=0, Total=43890 [2022-03-03 17:40:34,326 INFO L933 BasicCegarLoop]: 362 mSDtfsCounter, 1992 mSDsluCounter, 6985 mSDsCounter, 0 mSdLazyCounter, 3399 mSolverCounterSat, 383 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1992 SdHoareTripleChecker+Valid, 6964 SdHoareTripleChecker+Invalid, 3782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 383 IncrementalHoareTripleChecker+Valid, 3399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:40:34,327 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1992 Valid, 6964 Invalid, 3782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [383 Valid, 3399 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-03 17:40:34,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8136 states. [2022-03-03 17:40:34,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8136 to 4121. [2022-03-03 17:40:34,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4121 states, 4120 states have (on average 3.013592233009709) internal successors, (12416), 4120 states have internal predecessors, (12416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:34,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4121 states to 4121 states and 12416 transitions. [2022-03-03 17:40:34,401 INFO L78 Accepts]: Start accepts. Automaton has 4121 states and 12416 transitions. Word has length 74 [2022-03-03 17:40:34,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:40:34,401 INFO L470 AbstractCegarLoop]: Abstraction has 4121 states and 12416 transitions. [2022-03-03 17:40:34,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:34,402 INFO L276 IsEmpty]: Start isEmpty. Operand 4121 states and 12416 transitions. [2022-03-03 17:40:34,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:40:34,407 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:40:34,407 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:40:34,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2022-03-03 17:40:34,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2022-03-03 17:40:34,607 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:40:34,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:40:34,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1509045113, now seen corresponding path program 64 times [2022-03-03 17:40:34,608 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:40:34,608 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042567996] [2022-03-03 17:40:34,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:40:34,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:40:34,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:40:34,804 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:40:34,804 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:40:34,804 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042567996] [2022-03-03 17:40:34,805 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042567996] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:40:34,805 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007518261] [2022-03-03 17:40:34,805 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:40:34,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:40:34,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:40:34,806 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:40:34,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-03-03 17:40:34,873 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:40:34,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:40:34,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:40:34,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:40:35,327 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:40:35,328 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:40:35,947 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:40:35,947 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007518261] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:40:35,948 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:40:35,948 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-03-03 17:40:35,948 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512453022] [2022-03-03 17:40:35,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:40:35,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-03-03 17:40:35,948 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:40:35,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-03-03 17:40:35,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=1459, Unknown=0, NotChecked=0, Total=1640 [2022-03-03 17:40:35,948 INFO L87 Difference]: Start difference. First operand 4121 states and 12416 transitions. Second operand has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:42,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:40:42,772 INFO L93 Difference]: Finished difference Result 8546 states and 24271 transitions. [2022-03-03 17:40:42,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2022-03-03 17:40:42,772 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:40:42,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:40:42,785 INFO L225 Difference]: With dead ends: 8546 [2022-03-03 17:40:42,785 INFO L226 Difference]: Without dead ends: 8261 [2022-03-03 17:40:42,787 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12173 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=2808, Invalid=30498, Unknown=0, NotChecked=0, Total=33306 [2022-03-03 17:40:42,787 INFO L933 BasicCegarLoop]: 350 mSDtfsCounter, 1511 mSDsluCounter, 6927 mSDsCounter, 0 mSdLazyCounter, 3455 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1511 SdHoareTripleChecker+Valid, 6916 SdHoareTripleChecker+Invalid, 3650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 3455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:40:42,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1511 Valid, 6916 Invalid, 3650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 3455 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-03 17:40:42,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8261 states. [2022-03-03 17:40:42,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8261 to 4401. [2022-03-03 17:40:42,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4401 states, 4400 states have (on average 3.0322727272727272) internal successors, (13342), 4400 states have internal predecessors, (13342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:42,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4401 states to 4401 states and 13342 transitions. [2022-03-03 17:40:42,869 INFO L78 Accepts]: Start accepts. Automaton has 4401 states and 13342 transitions. Word has length 74 [2022-03-03 17:40:42,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:40:42,870 INFO L470 AbstractCegarLoop]: Abstraction has 4401 states and 13342 transitions. [2022-03-03 17:40:42,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:42,870 INFO L276 IsEmpty]: Start isEmpty. Operand 4401 states and 13342 transitions. [2022-03-03 17:40:42,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:40:42,875 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:40:42,875 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:40:42,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2022-03-03 17:40:43,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:40:43,076 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:40:43,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:40:43,076 INFO L85 PathProgramCache]: Analyzing trace with hash 835171857, now seen corresponding path program 65 times [2022-03-03 17:40:43,076 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:40:43,076 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258725121] [2022-03-03 17:40:43,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:40:43,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:40:43,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:40:43,282 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:40:43,282 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:40:43,282 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258725121] [2022-03-03 17:40:43,282 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258725121] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:40:43,283 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130608939] [2022-03-03 17:40:43,283 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:40:43,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:40:43,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:40:43,284 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:40:43,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-03-03 17:40:43,353 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 17:40:43,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:40:43,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:40:43,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:40:43,805 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:40:43,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:40:44,506 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:40:44,506 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130608939] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:40:44,506 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:40:44,506 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-03-03 17:40:44,506 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248598098] [2022-03-03 17:40:44,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:40:44,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-03-03 17:40:44,507 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:40:44,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-03-03 17:40:44,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1455, Unknown=0, NotChecked=0, Total=1640 [2022-03-03 17:40:44,507 INFO L87 Difference]: Start difference. First operand 4401 states and 13342 transitions. Second operand has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:51,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:40:51,152 INFO L93 Difference]: Finished difference Result 7638 states and 21892 transitions. [2022-03-03 17:40:51,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2022-03-03 17:40:51,152 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:40:51,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:40:51,163 INFO L225 Difference]: With dead ends: 7638 [2022-03-03 17:40:51,163 INFO L226 Difference]: Without dead ends: 7227 [2022-03-03 17:40:51,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9807 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=2682, Invalid=25040, Unknown=0, NotChecked=0, Total=27722 [2022-03-03 17:40:51,164 INFO L933 BasicCegarLoop]: 298 mSDtfsCounter, 1298 mSDsluCounter, 7232 mSDsCounter, 0 mSdLazyCounter, 3786 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1298 SdHoareTripleChecker+Valid, 7179 SdHoareTripleChecker+Invalid, 3954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 3786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:40:51,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1298 Valid, 7179 Invalid, 3954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 3786 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-03 17:40:51,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7227 states. [2022-03-03 17:40:51,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7227 to 4649. [2022-03-03 17:40:51,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4649 states, 4648 states have (on average 3.0395869191049916) internal successors, (14128), 4648 states have internal predecessors, (14128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:51,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4649 states to 4649 states and 14128 transitions. [2022-03-03 17:40:51,236 INFO L78 Accepts]: Start accepts. Automaton has 4649 states and 14128 transitions. Word has length 74 [2022-03-03 17:40:51,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:40:51,236 INFO L470 AbstractCegarLoop]: Abstraction has 4649 states and 14128 transitions. [2022-03-03 17:40:51,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:51,237 INFO L276 IsEmpty]: Start isEmpty. Operand 4649 states and 14128 transitions. [2022-03-03 17:40:51,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:40:51,243 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:40:51,243 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:40:51,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2022-03-03 17:40:51,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2022-03-03 17:40:51,444 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:40:51,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:40:51,444 INFO L85 PathProgramCache]: Analyzing trace with hash -125777637, now seen corresponding path program 66 times [2022-03-03 17:40:51,444 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:40:51,444 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202714784] [2022-03-03 17:40:51,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:40:51,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:40:51,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:40:51,655 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:40:51,656 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:40:51,656 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202714784] [2022-03-03 17:40:51,656 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202714784] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:40:51,656 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341734904] [2022-03-03 17:40:51,656 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:40:51,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:40:51,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:40:51,657 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:40:51,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-03-03 17:40:51,736 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-03 17:40:51,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:40:51,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:40:51,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:40:52,207 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:40:52,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:40:52,873 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:40:52,874 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341734904] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:40:52,874 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:40:52,874 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-03-03 17:40:52,874 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297231520] [2022-03-03 17:40:52,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:40:52,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-03-03 17:40:52,874 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:40:52,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-03-03 17:40:52,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=1459, Unknown=0, NotChecked=0, Total=1640 [2022-03-03 17:40:52,875 INFO L87 Difference]: Start difference. First operand 4649 states and 14128 transitions. Second operand has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:41:01,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:41:01,320 INFO L93 Difference]: Finished difference Result 9639 states and 27462 transitions. [2022-03-03 17:41:01,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2022-03-03 17:41:01,320 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:41:01,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:41:01,335 INFO L225 Difference]: With dead ends: 9639 [2022-03-03 17:41:01,335 INFO L226 Difference]: Without dead ends: 9426 [2022-03-03 17:41:01,337 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15082 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=3428, Invalid=36772, Unknown=0, NotChecked=0, Total=40200 [2022-03-03 17:41:01,337 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 1823 mSDsluCounter, 7653 mSDsCounter, 0 mSdLazyCounter, 3724 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1823 SdHoareTripleChecker+Valid, 7536 SdHoareTripleChecker+Invalid, 3979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 3724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:41:01,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1823 Valid, 7536 Invalid, 3979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 3724 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-03 17:41:01,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9426 states. [2022-03-03 17:41:01,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9426 to 4912. [2022-03-03 17:41:01,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4912 states, 4911 states have (on average 3.058440236204439) internal successors, (15020), 4911 states have internal predecessors, (15020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:41:01,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4912 states to 4912 states and 15020 transitions. [2022-03-03 17:41:01,445 INFO L78 Accepts]: Start accepts. Automaton has 4912 states and 15020 transitions. Word has length 74 [2022-03-03 17:41:01,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:41:01,445 INFO L470 AbstractCegarLoop]: Abstraction has 4912 states and 15020 transitions. [2022-03-03 17:41:01,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:41:01,445 INFO L276 IsEmpty]: Start isEmpty. Operand 4912 states and 15020 transitions. [2022-03-03 17:41:01,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:41:01,451 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:41:01,451 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:41:01,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2022-03-03 17:41:01,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2022-03-03 17:41:01,652 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:41:01,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:41:01,652 INFO L85 PathProgramCache]: Analyzing trace with hash -799650893, now seen corresponding path program 67 times [2022-03-03 17:41:01,652 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:41:01,653 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97112496] [2022-03-03 17:41:01,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:41:01,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:41:01,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:41:01,852 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:41:01,852 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:41:01,852 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97112496] [2022-03-03 17:41:01,852 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97112496] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:41:01,852 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336734279] [2022-03-03 17:41:01,852 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:41:01,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:41:01,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:41:01,853 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:41:01,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-03-03 17:41:01,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:41:01,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:41:01,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:41:02,398 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:41:02,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:41:03,003 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:41:03,003 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336734279] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:41:03,003 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:41:03,003 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-03-03 17:41:03,003 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913557006] [2022-03-03 17:41:03,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:41:03,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-03-03 17:41:03,004 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:41:03,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-03-03 17:41:03,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1451, Unknown=0, NotChecked=0, Total=1640 [2022-03-03 17:41:03,004 INFO L87 Difference]: Start difference. First operand 4912 states and 15020 transitions. Second operand has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:41:08,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:41:08,754 INFO L93 Difference]: Finished difference Result 8084 states and 23396 transitions. [2022-03-03 17:41:08,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2022-03-03 17:41:08,755 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:41:08,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:41:08,768 INFO L225 Difference]: With dead ends: 8084 [2022-03-03 17:41:08,768 INFO L226 Difference]: Without dead ends: 7760 [2022-03-03 17:41:08,769 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9845 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=2738, Invalid=25318, Unknown=0, NotChecked=0, Total=28056 [2022-03-03 17:41:08,769 INFO L933 BasicCegarLoop]: 314 mSDtfsCounter, 1633 mSDsluCounter, 5800 mSDsCounter, 0 mSdLazyCounter, 3054 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1633 SdHoareTripleChecker+Valid, 5794 SdHoareTripleChecker+Invalid, 3274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 3054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:41:08,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1633 Valid, 5794 Invalid, 3274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 3054 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-03 17:41:08,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7760 states. [2022-03-03 17:41:08,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7760 to 4936. [2022-03-03 17:41:08,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4936 states, 4935 states have (on average 3.059371833839919) internal successors, (15098), 4935 states have internal predecessors, (15098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:41:08,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4936 states to 4936 states and 15098 transitions. [2022-03-03 17:41:08,851 INFO L78 Accepts]: Start accepts. Automaton has 4936 states and 15098 transitions. Word has length 74 [2022-03-03 17:41:08,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:41:08,851 INFO L470 AbstractCegarLoop]: Abstraction has 4936 states and 15098 transitions. [2022-03-03 17:41:08,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:41:08,852 INFO L276 IsEmpty]: Start isEmpty. Operand 4936 states and 15098 transitions. [2022-03-03 17:41:08,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:41:08,858 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:41:08,859 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:41:08,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2022-03-03 17:41:09,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2022-03-03 17:41:09,071 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:41:09,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:41:09,072 INFO L85 PathProgramCache]: Analyzing trace with hash -537638723, now seen corresponding path program 68 times [2022-03-03 17:41:09,072 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:41:09,072 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771410299] [2022-03-03 17:41:09,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:41:09,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:41:09,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:41:09,267 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:41:09,267 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:41:09,267 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771410299] [2022-03-03 17:41:09,267 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771410299] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:41:09,267 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425632533] [2022-03-03 17:41:09,267 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:41:09,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:41:09,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:41:09,268 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:41:09,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-03-03 17:41:09,359 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:41:09,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:41:09,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:41:09,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:41:09,810 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:41:09,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:41:10,474 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:41:10,474 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425632533] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:41:10,474 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:41:10,474 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-03-03 17:41:10,474 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055748493] [2022-03-03 17:41:10,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:41:10,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-03-03 17:41:10,475 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:41:10,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-03-03 17:41:10,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1455, Unknown=0, NotChecked=0, Total=1640 [2022-03-03 17:41:10,475 INFO L87 Difference]: Start difference. First operand 4936 states and 15098 transitions. Second operand has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:41:17,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:41:17,224 INFO L93 Difference]: Finished difference Result 8215 states and 23694 transitions. [2022-03-03 17:41:17,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2022-03-03 17:41:17,225 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:41:17,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:41:17,237 INFO L225 Difference]: With dead ends: 8215 [2022-03-03 17:41:17,237 INFO L226 Difference]: Without dead ends: 7804 [2022-03-03 17:41:17,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11234 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=2914, Invalid=28592, Unknown=0, NotChecked=0, Total=31506 [2022-03-03 17:41:17,239 INFO L933 BasicCegarLoop]: 318 mSDtfsCounter, 1323 mSDsluCounter, 6256 mSDsCounter, 0 mSdLazyCounter, 3277 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1323 SdHoareTripleChecker+Valid, 6259 SdHoareTripleChecker+Invalid, 3480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 3277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:41:17,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1323 Valid, 6259 Invalid, 3480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 3277 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-03 17:41:17,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7804 states. [2022-03-03 17:41:17,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7804 to 4956. [2022-03-03 17:41:17,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4956 states, 4955 states have (on average 3.053279515640767) internal successors, (15129), 4955 states have internal predecessors, (15129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:41:17,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4956 states to 4956 states and 15129 transitions. [2022-03-03 17:41:17,313 INFO L78 Accepts]: Start accepts. Automaton has 4956 states and 15129 transitions. Word has length 74 [2022-03-03 17:41:17,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:41:17,313 INFO L470 AbstractCegarLoop]: Abstraction has 4956 states and 15129 transitions. [2022-03-03 17:41:17,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:41:17,313 INFO L276 IsEmpty]: Start isEmpty. Operand 4956 states and 15129 transitions. [2022-03-03 17:41:17,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:41:17,319 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:41:17,319 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:41:17,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2022-03-03 17:41:17,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable70 [2022-03-03 17:41:17,520 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:41:17,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:41:17,520 INFO L85 PathProgramCache]: Analyzing trace with hash 2122505823, now seen corresponding path program 69 times [2022-03-03 17:41:17,520 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:41:17,520 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521099203] [2022-03-03 17:41:17,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:41:17,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:41:17,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:41:17,713 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:41:17,713 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:41:17,713 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521099203] [2022-03-03 17:41:17,713 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521099203] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:41:17,713 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423709558] [2022-03-03 17:41:17,714 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:41:17,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:41:17,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:41:17,715 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:41:17,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-03-03 17:41:17,789 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 17:41:17,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:41:17,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:41:17,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:41:18,244 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:41:18,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:41:18,901 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:41:18,902 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423709558] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:41:18,902 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:41:18,902 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-03-03 17:41:18,902 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312908660] [2022-03-03 17:41:18,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:41:18,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-03-03 17:41:18,902 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:41:18,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-03-03 17:41:18,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1455, Unknown=0, NotChecked=0, Total=1640 [2022-03-03 17:41:18,903 INFO L87 Difference]: Start difference. First operand 4956 states and 15129 transitions. Second operand has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:41:24,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:41:24,963 INFO L93 Difference]: Finished difference Result 8235 states and 23774 transitions. [2022-03-03 17:41:24,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2022-03-03 17:41:24,963 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:41:24,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:41:24,976 INFO L225 Difference]: With dead ends: 8235 [2022-03-03 17:41:24,976 INFO L226 Difference]: Without dead ends: 7911 [2022-03-03 17:41:24,978 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10814 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=2796, Invalid=27654, Unknown=0, NotChecked=0, Total=30450 [2022-03-03 17:41:24,978 INFO L933 BasicCegarLoop]: 332 mSDtfsCounter, 1451 mSDsluCounter, 5476 mSDsCounter, 0 mSdLazyCounter, 2968 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1451 SdHoareTripleChecker+Valid, 5512 SdHoareTripleChecker+Invalid, 3218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 2968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:41:24,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1451 Valid, 5512 Invalid, 3218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 2968 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-03 17:41:24,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7911 states. [2022-03-03 17:41:25,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7911 to 4745. [2022-03-03 17:41:25,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4745 states, 4744 states have (on average 3.0413153456998314) internal successors, (14428), 4744 states have internal predecessors, (14428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:41:25,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4745 states to 4745 states and 14428 transitions. [2022-03-03 17:41:25,056 INFO L78 Accepts]: Start accepts. Automaton has 4745 states and 14428 transitions. Word has length 74 [2022-03-03 17:41:25,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:41:25,056 INFO L470 AbstractCegarLoop]: Abstraction has 4745 states and 14428 transitions. [2022-03-03 17:41:25,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:41:25,056 INFO L276 IsEmpty]: Start isEmpty. Operand 4745 states and 14428 transitions. [2022-03-03 17:41:25,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:41:25,062 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:41:25,062 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:41:25,079 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2022-03-03 17:41:25,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:41:25,263 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:41:25,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:41:25,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1337103017, now seen corresponding path program 70 times [2022-03-03 17:41:25,263 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:41:25,263 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812050993] [2022-03-03 17:41:25,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:41:25,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:41:25,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:41:25,472 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:41:25,472 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:41:25,472 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812050993] [2022-03-03 17:41:25,472 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812050993] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:41:25,472 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020967579] [2022-03-03 17:41:25,472 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:41:25,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:41:25,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:41:25,473 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:41:25,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-03-03 17:41:25,551 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:41:25,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:41:25,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:41:25,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:41:25,997 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:41:25,997 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:41:26,601 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:41:26,602 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020967579] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:41:26,602 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:41:26,602 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-03-03 17:41:26,602 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828322623] [2022-03-03 17:41:26,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:41:26,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-03-03 17:41:26,602 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:41:26,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-03-03 17:41:26,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1466, Unknown=0, NotChecked=0, Total=1640 [2022-03-03 17:41:26,603 INFO L87 Difference]: Start difference. First operand 4745 states and 14428 transitions. Second operand has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:41:32,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:41:32,490 INFO L93 Difference]: Finished difference Result 7744 states and 22450 transitions. [2022-03-03 17:41:32,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2022-03-03 17:41:32,490 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:41:32,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:41:32,503 INFO L225 Difference]: With dead ends: 7744 [2022-03-03 17:41:32,503 INFO L226 Difference]: Without dead ends: 7501 [2022-03-03 17:41:32,504 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9594 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=2653, Invalid=24737, Unknown=0, NotChecked=0, Total=27390 [2022-03-03 17:41:32,504 INFO L933 BasicCegarLoop]: 275 mSDtfsCounter, 1171 mSDsluCounter, 5668 mSDsCounter, 0 mSdLazyCounter, 2823 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1171 SdHoareTripleChecker+Valid, 5666 SdHoareTripleChecker+Invalid, 2984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 2823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:41:32,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1171 Valid, 5666 Invalid, 2984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 2823 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-03 17:41:32,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7501 states. [2022-03-03 17:41:32,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7501 to 4951. [2022-03-03 17:41:32,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4951 states, 4950 states have (on average 3.041212121212121) internal successors, (15054), 4950 states have internal predecessors, (15054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:41:32,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4951 states to 4951 states and 15054 transitions. [2022-03-03 17:41:32,587 INFO L78 Accepts]: Start accepts. Automaton has 4951 states and 15054 transitions. Word has length 74 [2022-03-03 17:41:32,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:41:32,588 INFO L470 AbstractCegarLoop]: Abstraction has 4951 states and 15054 transitions. [2022-03-03 17:41:32,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:41:32,588 INFO L276 IsEmpty]: Start isEmpty. Operand 4951 states and 15054 transitions. [2022-03-03 17:41:32,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:41:32,594 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:41:32,595 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:41:32,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2022-03-03 17:41:32,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:41:32,795 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:41:32,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:41:32,795 INFO L85 PathProgramCache]: Analyzing trace with hash -476585623, now seen corresponding path program 71 times [2022-03-03 17:41:32,795 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:41:32,796 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392322415] [2022-03-03 17:41:32,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:41:32,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:41:32,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:41:32,984 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:41:32,985 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:41:32,985 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392322415] [2022-03-03 17:41:32,985 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392322415] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:41:32,985 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406135805] [2022-03-03 17:41:32,985 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:41:32,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:41:32,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:41:32,986 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:41:32,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-03-03 17:41:33,060 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 17:41:33,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:41:33,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:41:33,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:41:33,515 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:41:33,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:41:34,151 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:41:34,151 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406135805] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:41:34,151 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:41:34,151 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-03-03 17:41:34,151 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798932818] [2022-03-03 17:41:34,151 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:41:34,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-03-03 17:41:34,151 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:41:34,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-03-03 17:41:34,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1469, Unknown=0, NotChecked=0, Total=1640 [2022-03-03 17:41:34,152 INFO L87 Difference]: Start difference. First operand 4951 states and 15054 transitions. Second operand has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:41:43,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:41:43,423 INFO L93 Difference]: Finished difference Result 9912 states and 28532 transitions. [2022-03-03 17:41:43,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2022-03-03 17:41:43,423 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:41:43,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:41:43,437 INFO L225 Difference]: With dead ends: 9912 [2022-03-03 17:41:43,438 INFO L226 Difference]: Without dead ends: 9708 [2022-03-03 17:41:43,439 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19618 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=4533, Invalid=45419, Unknown=0, NotChecked=0, Total=49952 [2022-03-03 17:41:43,440 INFO L933 BasicCegarLoop]: 394 mSDtfsCounter, 1340 mSDsluCounter, 8535 mSDsCounter, 0 mSdLazyCounter, 4310 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1340 SdHoareTripleChecker+Valid, 8503 SdHoareTripleChecker+Invalid, 4538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 4310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:41:43,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1340 Valid, 8503 Invalid, 4538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 4310 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-03 17:41:43,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9708 states. [2022-03-03 17:41:43,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9708 to 5027. [2022-03-03 17:41:43,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5027 states, 5026 states have (on average 3.047950656585754) internal successors, (15319), 5026 states have internal predecessors, (15319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:41:43,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5027 states to 5027 states and 15319 transitions. [2022-03-03 17:41:43,532 INFO L78 Accepts]: Start accepts. Automaton has 5027 states and 15319 transitions. Word has length 74 [2022-03-03 17:41:43,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:41:43,532 INFO L470 AbstractCegarLoop]: Abstraction has 5027 states and 15319 transitions. [2022-03-03 17:41:43,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:41:43,532 INFO L276 IsEmpty]: Start isEmpty. Operand 5027 states and 15319 transitions. [2022-03-03 17:41:43,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:41:43,538 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:41:43,539 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:41:43,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2022-03-03 17:41:43,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:41:43,739 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:41:43,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:41:43,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1150458879, now seen corresponding path program 72 times [2022-03-03 17:41:43,740 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:41:43,740 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299833419] [2022-03-03 17:41:43,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:41:43,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:41:43,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:41:43,934 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:41:43,934 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:41:43,934 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299833419] [2022-03-03 17:41:43,934 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299833419] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:41:43,934 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706152570] [2022-03-03 17:41:43,934 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:41:43,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:41:43,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:41:43,935 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:41:43,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-03-03 17:41:44,011 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-03 17:41:44,011 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:41:44,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:41:44,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:41:44,467 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:41:44,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:41:45,134 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:41:45,134 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706152570] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:41:45,134 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:41:45,134 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-03-03 17:41:45,134 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435199734] [2022-03-03 17:41:45,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:41:45,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-03-03 17:41:45,135 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:41:45,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-03-03 17:41:45,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1469, Unknown=0, NotChecked=0, Total=1640 [2022-03-03 17:41:45,135 INFO L87 Difference]: Start difference. First operand 5027 states and 15319 transitions. Second operand has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:41:53,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:41:53,641 INFO L93 Difference]: Finished difference Result 8845 states and 25299 transitions. [2022-03-03 17:41:53,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2022-03-03 17:41:53,642 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:41:53,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:41:53,656 INFO L225 Difference]: With dead ends: 8845 [2022-03-03 17:41:53,656 INFO L226 Difference]: Without dead ends: 8545 [2022-03-03 17:41:53,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15500 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=3798, Invalid=37614, Unknown=0, NotChecked=0, Total=41412 [2022-03-03 17:41:53,659 INFO L933 BasicCegarLoop]: 364 mSDtfsCounter, 1369 mSDsluCounter, 7311 mSDsCounter, 0 mSdLazyCounter, 3731 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1369 SdHoareTripleChecker+Valid, 7306 SdHoareTripleChecker+Invalid, 3943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 3731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:41:53,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1369 Valid, 7306 Invalid, 3943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 3731 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-03 17:41:53,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8545 states. [2022-03-03 17:41:53,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8545 to 4983. [2022-03-03 17:41:53,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4983 states, 4982 states have (on average 3.0497792051384987) internal successors, (15194), 4982 states have internal predecessors, (15194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:41:53,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4983 states to 4983 states and 15194 transitions. [2022-03-03 17:41:53,740 INFO L78 Accepts]: Start accepts. Automaton has 4983 states and 15194 transitions. Word has length 74 [2022-03-03 17:41:53,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:41:53,741 INFO L470 AbstractCegarLoop]: Abstraction has 4983 states and 15194 transitions. [2022-03-03 17:41:53,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:41:53,741 INFO L276 IsEmpty]: Start isEmpty. Operand 4983 states and 15194 transitions. [2022-03-03 17:41:53,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:41:53,747 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:41:53,748 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:41:53,764 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2022-03-03 17:41:53,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74 [2022-03-03 17:41:53,952 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:41:53,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:41:53,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1173322375, now seen corresponding path program 73 times [2022-03-03 17:41:53,952 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:41:53,953 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953480018] [2022-03-03 17:41:53,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:41:53,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:41:53,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:41:54,143 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:41:54,143 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:41:54,143 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953480018] [2022-03-03 17:41:54,143 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953480018] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:41:54,143 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036212043] [2022-03-03 17:41:54,143 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:41:54,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:41:54,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:41:54,144 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:41:54,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-03-03 17:41:54,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:41:54,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:41:54,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:41:54,655 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:41:54,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:41:55,116 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:41:55,116 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036212043] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:41:55,116 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:41:55,117 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-03-03 17:41:55,117 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50576962] [2022-03-03 17:41:55,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:41:55,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-03-03 17:41:55,117 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:41:55,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-03-03 17:41:55,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1303, Unknown=0, NotChecked=0, Total=1482 [2022-03-03 17:41:55,118 INFO L87 Difference]: Start difference. First operand 4983 states and 15194 transitions. Second operand has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:41:57,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:41:57,651 INFO L93 Difference]: Finished difference Result 7537 states and 22138 transitions. [2022-03-03 17:41:57,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-03-03 17:41:57,651 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:41:57,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:41:57,664 INFO L225 Difference]: With dead ends: 7537 [2022-03-03 17:41:57,664 INFO L226 Difference]: Without dead ends: 7435 [2022-03-03 17:41:57,665 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 125 SyntacticMatches, 2 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3706 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1361, Invalid=10411, Unknown=0, NotChecked=0, Total=11772 [2022-03-03 17:41:57,665 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 778 mSDsluCounter, 4310 mSDsCounter, 0 mSdLazyCounter, 1880 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 778 SdHoareTripleChecker+Valid, 4300 SdHoareTripleChecker+Invalid, 1971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 17:41:57,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [778 Valid, 4300 Invalid, 1971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1880 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 17:41:57,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7435 states. [2022-03-03 17:41:57,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7435 to 5155. [2022-03-03 17:41:57,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5155 states, 5154 states have (on average 3.053744664338378) internal successors, (15739), 5154 states have internal predecessors, (15739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:41:57,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5155 states to 5155 states and 15739 transitions. [2022-03-03 17:41:57,740 INFO L78 Accepts]: Start accepts. Automaton has 5155 states and 15739 transitions. Word has length 74 [2022-03-03 17:41:57,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:41:57,740 INFO L470 AbstractCegarLoop]: Abstraction has 5155 states and 15739 transitions. [2022-03-03 17:41:57,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:41:57,740 INFO L276 IsEmpty]: Start isEmpty. Operand 5155 states and 15739 transitions. [2022-03-03 17:41:57,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:41:57,746 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:41:57,746 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:41:57,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2022-03-03 17:41:57,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:41:57,947 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:41:57,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:41:57,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1152604989, now seen corresponding path program 74 times [2022-03-03 17:41:57,947 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:41:57,947 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282216879] [2022-03-03 17:41:57,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:41:57,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:41:57,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:41:58,169 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:41:58,169 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:41:58,169 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282216879] [2022-03-03 17:41:58,170 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282216879] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:41:58,170 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583696510] [2022-03-03 17:41:58,170 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:41:58,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:41:58,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:41:58,171 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:41:58,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-03-03 17:41:58,254 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:41:58,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:41:58,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:41:58,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:41:58,696 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:41:58,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:41:59,126 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:41:59,126 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583696510] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:41:59,126 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:41:59,126 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-03-03 17:41:59,126 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547554643] [2022-03-03 17:41:59,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:41:59,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-03-03 17:41:59,127 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:41:59,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-03-03 17:41:59,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1372, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 17:41:59,127 INFO L87 Difference]: Start difference. First operand 5155 states and 15739 transitions. Second operand has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:42:01,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:42:01,621 INFO L93 Difference]: Finished difference Result 7381 states and 21761 transitions. [2022-03-03 17:42:01,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-03-03 17:42:01,622 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:42:01,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:42:01,634 INFO L225 Difference]: With dead ends: 7381 [2022-03-03 17:42:01,634 INFO L226 Difference]: Without dead ends: 7279 [2022-03-03 17:42:01,635 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3061 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1201, Invalid=8899, Unknown=0, NotChecked=0, Total=10100 [2022-03-03 17:42:01,635 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 873 mSDsluCounter, 3691 mSDsCounter, 0 mSdLazyCounter, 1669 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 3724 SdHoareTripleChecker+Invalid, 1799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 1669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:42:01,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [873 Valid, 3724 Invalid, 1799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 1669 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:42:01,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7279 states. [2022-03-03 17:42:01,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7279 to 5191. [2022-03-03 17:42:01,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5191 states, 5190 states have (on average 3.0539499036608864) internal successors, (15850), 5190 states have internal predecessors, (15850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:42:01,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5191 states to 5191 states and 15850 transitions. [2022-03-03 17:42:01,718 INFO L78 Accepts]: Start accepts. Automaton has 5191 states and 15850 transitions. Word has length 74 [2022-03-03 17:42:01,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:42:01,718 INFO L470 AbstractCegarLoop]: Abstraction has 5191 states and 15850 transitions. [2022-03-03 17:42:01,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:42:01,718 INFO L276 IsEmpty]: Start isEmpty. Operand 5191 states and 15850 transitions. [2022-03-03 17:42:01,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:42:01,724 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:42:01,724 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:42:01,741 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2022-03-03 17:42:01,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:42:01,925 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:42:01,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:42:01,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1797105751, now seen corresponding path program 75 times [2022-03-03 17:42:01,925 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:42:01,925 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030262704] [2022-03-03 17:42:01,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:42:01,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:42:01,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:42:02,112 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:42:02,113 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:42:02,113 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030262704] [2022-03-03 17:42:02,113 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030262704] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:42:02,113 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811675853] [2022-03-03 17:42:02,113 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:42:02,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:42:02,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:42:02,114 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:42:02,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-03-03 17:42:02,209 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 17:42:02,209 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:42:02,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:42:02,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:42:02,650 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:42:02,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:42:03,140 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:42:03,140 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811675853] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:42:03,140 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:42:03,140 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-03-03 17:42:03,140 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000040352] [2022-03-03 17:42:03,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:42:03,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-03-03 17:42:03,140 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:42:03,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-03-03 17:42:03,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=1368, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 17:42:03,141 INFO L87 Difference]: Start difference. First operand 5191 states and 15850 transitions. Second operand has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:42:12,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:42:12,952 INFO L93 Difference]: Finished difference Result 12072 states and 34561 transitions. [2022-03-03 17:42:12,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 232 states. [2022-03-03 17:42:12,952 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:42:12,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:42:12,970 INFO L225 Difference]: With dead ends: 12072 [2022-03-03 17:42:12,971 INFO L226 Difference]: Without dead ends: 11655 [2022-03-03 17:42:12,974 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 248 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24045 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=7539, Invalid=54711, Unknown=0, NotChecked=0, Total=62250 [2022-03-03 17:42:12,974 INFO L933 BasicCegarLoop]: 461 mSDtfsCounter, 1864 mSDsluCounter, 8156 mSDsCounter, 0 mSdLazyCounter, 3952 mSolverCounterSat, 390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1864 SdHoareTripleChecker+Valid, 8054 SdHoareTripleChecker+Invalid, 4342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 390 IncrementalHoareTripleChecker+Valid, 3952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:42:12,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1864 Valid, 8054 Invalid, 4342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [390 Valid, 3952 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-03 17:42:12,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11655 states. [2022-03-03 17:42:13,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11655 to 5495. [2022-03-03 17:42:13,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5495 states, 5494 states have (on average 3.0633418274481254) internal successors, (16830), 5494 states have internal predecessors, (16830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:42:13,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5495 states to 5495 states and 16830 transitions. [2022-03-03 17:42:13,091 INFO L78 Accepts]: Start accepts. Automaton has 5495 states and 16830 transitions. Word has length 74 [2022-03-03 17:42:13,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:42:13,091 INFO L470 AbstractCegarLoop]: Abstraction has 5495 states and 16830 transitions. [2022-03-03 17:42:13,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:42:13,091 INFO L276 IsEmpty]: Start isEmpty. Operand 5495 states and 16830 transitions. [2022-03-03 17:42:13,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:42:13,098 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:42:13,098 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:42:13,114 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2022-03-03 17:42:13,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2022-03-03 17:42:13,298 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:42:13,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:42:13,299 INFO L85 PathProgramCache]: Analyzing trace with hash 746021723, now seen corresponding path program 76 times [2022-03-03 17:42:13,299 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:42:13,299 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819441157] [2022-03-03 17:42:13,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:42:13,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:42:13,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:42:13,490 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:42:13,490 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:42:13,490 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819441157] [2022-03-03 17:42:13,490 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819441157] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:42:13,490 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725188362] [2022-03-03 17:42:13,490 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:42:13,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:42:13,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:42:13,491 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:42:13,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-03-03 17:42:13,565 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:42:13,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:42:13,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:42:13,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:42:14,017 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:42:14,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:42:14,727 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:42:14,727 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725188362] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:42:14,727 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:42:14,727 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-03-03 17:42:14,727 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368648718] [2022-03-03 17:42:14,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:42:14,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-03-03 17:42:14,728 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:42:14,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-03-03 17:42:14,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1396, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 17:42:14,728 INFO L87 Difference]: Start difference. First operand 5495 states and 16830 transitions. Second operand has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:42:25,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:42:25,169 INFO L93 Difference]: Finished difference Result 11938 states and 34498 transitions. [2022-03-03 17:42:25,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2022-03-03 17:42:25,169 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:42:25,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:42:25,189 INFO L225 Difference]: With dead ends: 11938 [2022-03-03 17:42:25,189 INFO L226 Difference]: Without dead ends: 11542 [2022-03-03 17:42:25,191 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19156 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=3949, Invalid=46003, Unknown=0, NotChecked=0, Total=49952 [2022-03-03 17:42:25,192 INFO L933 BasicCegarLoop]: 351 mSDtfsCounter, 1504 mSDsluCounter, 8896 mSDsCounter, 0 mSdLazyCounter, 4586 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 8911 SdHoareTripleChecker+Invalid, 4825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 4586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-03-03 17:42:25,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1504 Valid, 8911 Invalid, 4825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 4586 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-03-03 17:42:25,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11542 states. [2022-03-03 17:42:25,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11542 to 6178. [2022-03-03 17:42:25,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6178 states, 6177 states have (on average 3.0838594787113487) internal successors, (19049), 6177 states have internal predecessors, (19049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:42:25,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6178 states to 6178 states and 19049 transitions. [2022-03-03 17:42:25,318 INFO L78 Accepts]: Start accepts. Automaton has 6178 states and 19049 transitions. Word has length 74 [2022-03-03 17:42:25,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:42:25,318 INFO L470 AbstractCegarLoop]: Abstraction has 6178 states and 19049 transitions. [2022-03-03 17:42:25,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:42:25,318 INFO L276 IsEmpty]: Start isEmpty. Operand 6178 states and 19049 transitions. [2022-03-03 17:42:25,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:42:25,327 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:42:25,327 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:42:25,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2022-03-03 17:42:25,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2022-03-03 17:42:25,529 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:42:25,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:42:25,529 INFO L85 PathProgramCache]: Analyzing trace with hash 72148467, now seen corresponding path program 77 times [2022-03-03 17:42:25,529 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:42:25,529 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862479143] [2022-03-03 17:42:25,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:42:25,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:42:25,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:42:25,723 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:42:25,723 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:42:25,723 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862479143] [2022-03-03 17:42:25,723 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862479143] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:42:25,723 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313109274] [2022-03-03 17:42:25,723 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:42:25,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:42:25,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:42:25,724 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:42:25,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-03-03 17:42:25,802 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 17:42:25,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:42:25,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:42:25,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:42:26,295 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:42:26,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:42:26,985 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:42:26,985 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313109274] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:42:26,985 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:42:26,986 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-03-03 17:42:26,986 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200764184] [2022-03-03 17:42:26,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:42:26,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-03-03 17:42:26,986 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:42:26,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-03-03 17:42:26,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1392, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 17:42:26,986 INFO L87 Difference]: Start difference. First operand 6178 states and 19049 transitions. Second operand has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:42:36,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:42:36,135 INFO L93 Difference]: Finished difference Result 12476 states and 36433 transitions. [2022-03-03 17:42:36,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2022-03-03 17:42:36,135 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:42:36,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:42:36,154 INFO L225 Difference]: With dead ends: 12476 [2022-03-03 17:42:36,154 INFO L226 Difference]: Without dead ends: 11945 [2022-03-03 17:42:36,157 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17076 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=3982, Invalid=41174, Unknown=0, NotChecked=0, Total=45156 [2022-03-03 17:42:36,157 INFO L933 BasicCegarLoop]: 306 mSDtfsCounter, 1507 mSDsluCounter, 6151 mSDsCounter, 0 mSdLazyCounter, 3419 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1507 SdHoareTripleChecker+Valid, 6175 SdHoareTripleChecker+Invalid, 3672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 3419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:42:36,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1507 Valid, 6175 Invalid, 3672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 3419 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-03 17:42:36,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11945 states. [2022-03-03 17:42:36,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11945 to 6794. [2022-03-03 17:42:36,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6794 states, 6793 states have (on average 3.103636095981157) internal successors, (21083), 6793 states have internal predecessors, (21083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:42:36,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6794 states to 6794 states and 21083 transitions. [2022-03-03 17:42:36,308 INFO L78 Accepts]: Start accepts. Automaton has 6794 states and 21083 transitions. Word has length 74 [2022-03-03 17:42:36,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:42:36,308 INFO L470 AbstractCegarLoop]: Abstraction has 6794 states and 21083 transitions. [2022-03-03 17:42:36,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:42:36,309 INFO L276 IsEmpty]: Start isEmpty. Operand 6794 states and 21083 transitions. [2022-03-03 17:42:36,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:42:36,318 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:42:36,318 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:42:36,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2022-03-03 17:42:36,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:42:36,519 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:42:36,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:42:36,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1300662113, now seen corresponding path program 78 times [2022-03-03 17:42:36,519 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:42:36,519 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600659888] [2022-03-03 17:42:36,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:42:36,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:42:36,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:42:36,714 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:42:36,714 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:42:36,714 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600659888] [2022-03-03 17:42:36,715 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600659888] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:42:36,715 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802102685] [2022-03-03 17:42:36,715 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:42:36,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:42:36,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:42:36,716 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:42:36,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-03-03 17:42:36,795 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-03 17:42:36,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:42:36,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:42:36,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:42:37,256 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:42:37,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:42:37,947 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:42:37,947 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802102685] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:42:37,947 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:42:37,947 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-03-03 17:42:37,947 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149265868] [2022-03-03 17:42:37,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:42:37,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-03-03 17:42:37,949 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:42:37,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-03-03 17:42:37,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1392, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 17:42:37,950 INFO L87 Difference]: Start difference. First operand 6794 states and 21083 transitions. Second operand has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:42:46,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:42:46,918 INFO L93 Difference]: Finished difference Result 12284 states and 35865 transitions. [2022-03-03 17:42:46,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2022-03-03 17:42:46,918 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:42:46,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:42:46,938 INFO L225 Difference]: With dead ends: 12284 [2022-03-03 17:42:46,938 INFO L226 Difference]: Without dead ends: 11858 [2022-03-03 17:42:46,940 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17311 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=3918, Invalid=42092, Unknown=0, NotChecked=0, Total=46010 [2022-03-03 17:42:46,941 INFO L933 BasicCegarLoop]: 314 mSDtfsCounter, 1358 mSDsluCounter, 6121 mSDsCounter, 0 mSdLazyCounter, 3354 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1358 SdHoareTripleChecker+Valid, 6177 SdHoareTripleChecker+Invalid, 3582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 3354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:42:46,941 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1358 Valid, 6177 Invalid, 3582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 3354 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-03 17:42:46,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11858 states. [2022-03-03 17:42:47,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11858 to 6495. [2022-03-03 17:42:47,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6495 states, 6494 states have (on average 3.092700954727441) internal successors, (20084), 6494 states have internal predecessors, (20084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:42:47,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6495 states to 6495 states and 20084 transitions. [2022-03-03 17:42:47,065 INFO L78 Accepts]: Start accepts. Automaton has 6495 states and 20084 transitions. Word has length 74 [2022-03-03 17:42:47,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:42:47,065 INFO L470 AbstractCegarLoop]: Abstraction has 6495 states and 20084 transitions. [2022-03-03 17:42:47,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:42:47,065 INFO L276 IsEmpty]: Start isEmpty. Operand 6495 states and 20084 transitions. [2022-03-03 17:42:47,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:42:47,074 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:42:47,074 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:42:47,090 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2022-03-03 17:42:47,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:42:47,275 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:42:47,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:42:47,275 INFO L85 PathProgramCache]: Analyzing trace with hash 574079627, now seen corresponding path program 79 times [2022-03-03 17:42:47,275 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:42:47,275 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325836810] [2022-03-03 17:42:47,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:42:47,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:42:47,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:42:47,500 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:42:47,500 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:42:47,500 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325836810] [2022-03-03 17:42:47,500 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325836810] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:42:47,500 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871633302] [2022-03-03 17:42:47,500 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:42:47,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:42:47,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:42:47,501 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:42:47,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-03-03 17:42:47,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:42:47,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:42:47,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:42:48,011 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:42:48,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:42:48,613 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:42:48,614 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871633302] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:42:48,614 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:42:48,614 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-03-03 17:42:48,614 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880582492] [2022-03-03 17:42:48,614 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:42:48,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-03-03 17:42:48,614 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:42:48,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-03-03 17:42:48,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=1400, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 17:42:48,615 INFO L87 Difference]: Start difference. First operand 6495 states and 20084 transitions. Second operand has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:42:55,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:42:55,979 INFO L93 Difference]: Finished difference Result 11398 states and 34007 transitions. [2022-03-03 17:42:55,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2022-03-03 17:42:55,979 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:42:55,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:42:55,999 INFO L225 Difference]: With dead ends: 11398 [2022-03-03 17:42:56,000 INFO L226 Difference]: Without dead ends: 11185 [2022-03-03 17:42:56,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13254 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=3326, Invalid=32964, Unknown=0, NotChecked=0, Total=36290 [2022-03-03 17:42:56,002 INFO L933 BasicCegarLoop]: 268 mSDtfsCounter, 1054 mSDsluCounter, 6568 mSDsCounter, 0 mSdLazyCounter, 3196 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1054 SdHoareTripleChecker+Valid, 6578 SdHoareTripleChecker+Invalid, 3340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 3196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:42:56,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1054 Valid, 6578 Invalid, 3340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 3196 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-03 17:42:56,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11185 states. [2022-03-03 17:42:56,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11185 to 6991. [2022-03-03 17:42:56,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6991 states, 6990 states have (on average 3.0907010014306153) internal successors, (21604), 6990 states have internal predecessors, (21604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:42:56,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6991 states to 6991 states and 21604 transitions. [2022-03-03 17:42:56,159 INFO L78 Accepts]: Start accepts. Automaton has 6991 states and 21604 transitions. Word has length 74 [2022-03-03 17:42:56,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:42:56,160 INFO L470 AbstractCegarLoop]: Abstraction has 6991 states and 21604 transitions. [2022-03-03 17:42:56,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:42:56,160 INFO L276 IsEmpty]: Start isEmpty. Operand 6991 states and 21604 transitions. [2022-03-03 17:42:56,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:42:56,169 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:42:56,169 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:42:56,184 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Ended with exit code 0 [2022-03-03 17:42:56,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable81 [2022-03-03 17:42:56,369 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:42:56,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:42:56,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1239609013, now seen corresponding path program 80 times [2022-03-03 17:42:56,370 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:42:56,370 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876759910] [2022-03-03 17:42:56,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:42:56,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:42:56,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:42:56,559 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:42:56,560 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:42:56,560 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876759910] [2022-03-03 17:42:56,560 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876759910] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:42:56,560 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70519412] [2022-03-03 17:42:56,560 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:42:56,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:42:56,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:42:56,561 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:42:56,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-03-03 17:42:56,639 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:42:56,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:42:56,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:42:56,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:42:57,077 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:42:57,077 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:42:57,741 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:42:57,741 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [70519412] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:42:57,742 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:42:57,742 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-03-03 17:42:57,742 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408205113] [2022-03-03 17:42:57,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:42:57,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-03-03 17:42:57,742 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:42:57,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-03-03 17:42:57,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1403, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 17:42:57,743 INFO L87 Difference]: Start difference. First operand 6991 states and 21604 transitions. Second operand has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:43:09,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:43:09,079 INFO L93 Difference]: Finished difference Result 14406 states and 42711 transitions. [2022-03-03 17:43:09,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states. [2022-03-03 17:43:09,079 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:43:09,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:43:09,105 INFO L225 Difference]: With dead ends: 14406 [2022-03-03 17:43:09,105 INFO L226 Difference]: Without dead ends: 14202 [2022-03-03 17:43:09,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 241 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23037 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=5051, Invalid=53755, Unknown=0, NotChecked=0, Total=58806 [2022-03-03 17:43:09,107 INFO L933 BasicCegarLoop]: 396 mSDtfsCounter, 1422 mSDsluCounter, 7274 mSDsCounter, 0 mSdLazyCounter, 3969 mSolverCounterSat, 249 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1422 SdHoareTripleChecker+Valid, 7348 SdHoareTripleChecker+Invalid, 4218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 249 IncrementalHoareTripleChecker+Valid, 3969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:43:09,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1422 Valid, 7348 Invalid, 4218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [249 Valid, 3969 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-03 17:43:09,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14202 states. [2022-03-03 17:43:09,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14202 to 7319. [2022-03-03 17:43:09,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7319 states, 7318 states have (on average 3.114785460508336) internal successors, (22794), 7318 states have internal predecessors, (22794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:43:09,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7319 states to 7319 states and 22794 transitions. [2022-03-03 17:43:09,251 INFO L78 Accepts]: Start accepts. Automaton has 7319 states and 22794 transitions. Word has length 74 [2022-03-03 17:43:09,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:43:09,251 INFO L470 AbstractCegarLoop]: Abstraction has 7319 states and 22794 transitions. [2022-03-03 17:43:09,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:43:09,251 INFO L276 IsEmpty]: Start isEmpty. Operand 7319 states and 22794 transitions. [2022-03-03 17:43:09,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:43:09,261 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:43:09,262 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:43:09,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Forceful destruction successful, exit code 0 [2022-03-03 17:43:09,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:43:09,462 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:43:09,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:43:09,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1913482269, now seen corresponding path program 81 times [2022-03-03 17:43:09,462 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:43:09,462 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254784006] [2022-03-03 17:43:09,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:43:09,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:43:09,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:43:09,669 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:43:09,669 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:43:09,669 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254784006] [2022-03-03 17:43:09,669 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254784006] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:43:09,669 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768933981] [2022-03-03 17:43:09,669 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:43:09,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:43:09,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:43:09,670 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:43:09,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-03-03 17:43:09,755 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 17:43:09,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:43:09,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-03 17:43:09,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:43:10,419 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:43:10,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:43:11,237 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:43:11,238 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [768933981] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:43:11,238 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:43:11,238 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 20, 21] total 49 [2022-03-03 17:43:11,238 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433684953] [2022-03-03 17:43:11,238 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:43:11,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-03-03 17:43:11,238 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:43:11,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-03-03 17:43:11,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=2121, Unknown=0, NotChecked=0, Total=2352 [2022-03-03 17:43:11,239 INFO L87 Difference]: Start difference. First operand 7319 states and 22794 transitions. Second operand has 49 states, 49 states have (on average 3.4081632653061225) internal successors, (167), 49 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:43:20,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:43:20,788 INFO L93 Difference]: Finished difference Result 12684 states and 37596 transitions. [2022-03-03 17:43:20,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2022-03-03 17:43:20,789 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 3.4081632653061225) internal successors, (167), 49 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:43:20,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:43:20,813 INFO L225 Difference]: With dead ends: 12684 [2022-03-03 17:43:20,813 INFO L226 Difference]: Without dead ends: 12501 [2022-03-03 17:43:20,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15629 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=4664, Invalid=38808, Unknown=0, NotChecked=0, Total=43472 [2022-03-03 17:43:20,816 INFO L933 BasicCegarLoop]: 237 mSDtfsCounter, 1747 mSDsluCounter, 5540 mSDsCounter, 0 mSdLazyCounter, 3352 mSolverCounterSat, 281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1747 SdHoareTripleChecker+Valid, 5476 SdHoareTripleChecker+Invalid, 3633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 281 IncrementalHoareTripleChecker+Valid, 3352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:43:20,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1747 Valid, 5476 Invalid, 3633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [281 Valid, 3352 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-03 17:43:20,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12501 states. [2022-03-03 17:43:20,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12501 to 7303. [2022-03-03 17:43:20,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7303 states, 7302 states have (on average 3.115036976170912) internal successors, (22746), 7302 states have internal predecessors, (22746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:43:20,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7303 states to 7303 states and 22746 transitions. [2022-03-03 17:43:20,974 INFO L78 Accepts]: Start accepts. Automaton has 7303 states and 22746 transitions. Word has length 74 [2022-03-03 17:43:20,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:43:20,974 INFO L470 AbstractCegarLoop]: Abstraction has 7303 states and 22746 transitions. [2022-03-03 17:43:20,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 3.4081632653061225) internal successors, (167), 49 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:43:20,974 INFO L276 IsEmpty]: Start isEmpty. Operand 7303 states and 22746 transitions. [2022-03-03 17:43:20,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:43:20,985 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:43:20,985 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:43:21,001 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Forceful destruction successful, exit code 0 [2022-03-03 17:43:21,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:43:21,186 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:43:21,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:43:21,187 INFO L85 PathProgramCache]: Analyzing trace with hash 746662277, now seen corresponding path program 82 times [2022-03-03 17:43:21,187 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:43:21,187 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921871621] [2022-03-03 17:43:21,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:43:21,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:43:21,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:43:21,380 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:43:21,381 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:43:21,381 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921871621] [2022-03-03 17:43:21,381 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921871621] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:43:21,381 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033793499] [2022-03-03 17:43:21,381 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:43:21,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:43:21,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:43:21,382 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:43:21,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2022-03-03 17:43:21,459 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:43:21,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:43:21,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:43:21,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:43:21,893 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:43:21,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:43:22,480 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:43:22,480 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033793499] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:43:22,480 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:43:22,480 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-03-03 17:43:22,480 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900529954] [2022-03-03 17:43:22,480 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:43:22,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-03-03 17:43:22,480 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:43:22,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-03-03 17:43:22,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1398, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 17:43:22,481 INFO L87 Difference]: Start difference. First operand 7303 states and 22746 transitions. Second operand has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:43:30,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:43:30,738 INFO L93 Difference]: Finished difference Result 12908 states and 38826 transitions. [2022-03-03 17:43:30,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2022-03-03 17:43:30,738 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:43:30,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:43:30,760 INFO L225 Difference]: With dead ends: 12908 [2022-03-03 17:43:30,760 INFO L226 Difference]: Without dead ends: 12509 [2022-03-03 17:43:30,763 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17130 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=4124, Invalid=41458, Unknown=0, NotChecked=0, Total=45582 [2022-03-03 17:43:30,763 INFO L933 BasicCegarLoop]: 361 mSDtfsCounter, 1197 mSDsluCounter, 7347 mSDsCounter, 0 mSdLazyCounter, 4002 mSolverCounterSat, 240 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1197 SdHoareTripleChecker+Valid, 7333 SdHoareTripleChecker+Invalid, 4242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 240 IncrementalHoareTripleChecker+Valid, 4002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:43:30,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1197 Valid, 7333 Invalid, 4242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [240 Valid, 4002 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-03 17:43:30,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12509 states. [2022-03-03 17:43:30,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12509 to 7875. [2022-03-03 17:43:30,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7875 states, 7874 states have (on average 3.132715265430531) internal successors, (24667), 7874 states have internal predecessors, (24667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:43:30,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7875 states to 7875 states and 24667 transitions. [2022-03-03 17:43:30,926 INFO L78 Accepts]: Start accepts. Automaton has 7875 states and 24667 transitions. Word has length 74 [2022-03-03 17:43:30,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:43:30,926 INFO L470 AbstractCegarLoop]: Abstraction has 7875 states and 24667 transitions. [2022-03-03 17:43:30,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:43:30,926 INFO L276 IsEmpty]: Start isEmpty. Operand 7875 states and 24667 transitions. [2022-03-03 17:43:30,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:43:30,938 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:43:30,939 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:43:30,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Forceful destruction successful, exit code 0 [2022-03-03 17:43:31,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable84 [2022-03-03 17:43:31,139 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:43:31,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:43:31,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1031249583, now seen corresponding path program 83 times [2022-03-03 17:43:31,140 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:43:31,140 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949093501] [2022-03-03 17:43:31,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:43:31,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:43:31,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:43:31,334 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:43:31,334 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:43:31,334 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949093501] [2022-03-03 17:43:31,334 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949093501] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:43:31,334 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485550364] [2022-03-03 17:43:31,334 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:43:31,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:43:31,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:43:31,335 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:43:31,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2022-03-03 17:43:31,413 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 17:43:31,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:43:31,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:43:31,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:43:31,858 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:43:31,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:43:32,503 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:43:32,504 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485550364] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:43:32,504 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:43:32,504 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-03-03 17:43:32,504 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184688502] [2022-03-03 17:43:32,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:43:32,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-03-03 17:43:32,504 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:43:32,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-03-03 17:43:32,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1396, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 17:43:32,505 INFO L87 Difference]: Start difference. First operand 7875 states and 24667 transitions. Second operand has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:43:40,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:43:40,043 INFO L93 Difference]: Finished difference Result 13497 states and 40619 transitions. [2022-03-03 17:43:40,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2022-03-03 17:43:40,043 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:43:40,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:43:40,067 INFO L225 Difference]: With dead ends: 13497 [2022-03-03 17:43:40,067 INFO L226 Difference]: Without dead ends: 12972 [2022-03-03 17:43:40,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13033 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=3158, Invalid=32752, Unknown=0, NotChecked=0, Total=35910 [2022-03-03 17:43:40,068 INFO L933 BasicCegarLoop]: 339 mSDtfsCounter, 1193 mSDsluCounter, 8077 mSDsCounter, 0 mSdLazyCounter, 4387 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1193 SdHoareTripleChecker+Valid, 7996 SdHoareTripleChecker+Invalid, 4626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 4387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:43:40,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1193 Valid, 7996 Invalid, 4626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 4387 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-03 17:43:40,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12972 states. [2022-03-03 17:43:40,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12972 to 8063. [2022-03-03 17:43:40,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8063 states, 8062 states have (on average 3.129248325477549) internal successors, (25228), 8062 states have internal predecessors, (25228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:43:40,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8063 states to 8063 states and 25228 transitions. [2022-03-03 17:43:40,255 INFO L78 Accepts]: Start accepts. Automaton has 8063 states and 25228 transitions. Word has length 74 [2022-03-03 17:43:40,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:43:40,255 INFO L470 AbstractCegarLoop]: Abstraction has 8063 states and 25228 transitions. [2022-03-03 17:43:40,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:43:40,256 INFO L276 IsEmpty]: Start isEmpty. Operand 8063 states and 25228 transitions. [2022-03-03 17:43:40,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:43:40,266 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:43:40,266 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:43:40,282 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2022-03-03 17:43:40,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:43:40,467 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:43:40,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:43:40,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1668906567, now seen corresponding path program 84 times [2022-03-03 17:43:40,467 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:43:40,467 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228129831] [2022-03-03 17:43:40,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:43:40,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:43:40,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:43:40,637 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:43:40,638 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:43:40,638 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228129831] [2022-03-03 17:43:40,638 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228129831] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:43:40,638 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983457785] [2022-03-03 17:43:40,638 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:43:40,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:43:40,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:43:40,639 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:43:40,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2022-03-03 17:43:40,720 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-03 17:43:40,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:43:40,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:43:40,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:43:41,112 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:43:41,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:43:41,625 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:43:41,626 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983457785] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:43:41,626 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:43:41,626 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 38 [2022-03-03 17:43:41,626 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965587184] [2022-03-03 17:43:41,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:43:41,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-03-03 17:43:41,626 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:43:41,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-03-03 17:43:41,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1237, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 17:43:41,627 INFO L87 Difference]: Start difference. First operand 8063 states and 25228 transitions. Second operand has 38 states, 38 states have (on average 3.763157894736842) internal successors, (143), 38 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:43:44,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:43:44,323 INFO L93 Difference]: Finished difference Result 11245 states and 33982 transitions. [2022-03-03 17:43:44,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-03-03 17:43:44,323 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.763157894736842) internal successors, (143), 38 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:43:44,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:43:44,343 INFO L225 Difference]: With dead ends: 11245 [2022-03-03 17:43:44,343 INFO L226 Difference]: Without dead ends: 11143 [2022-03-03 17:43:44,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 125 SyntacticMatches, 3 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3775 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1421, Invalid=10351, Unknown=0, NotChecked=0, Total=11772 [2022-03-03 17:43:44,345 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 778 mSDsluCounter, 3568 mSDsCounter, 0 mSdLazyCounter, 1646 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 778 SdHoareTripleChecker+Valid, 3605 SdHoareTripleChecker+Invalid, 1765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 1646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:43:44,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [778 Valid, 3605 Invalid, 1765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 1646 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:43:44,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11143 states. [2022-03-03 17:43:44,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11143 to 8127. [2022-03-03 17:43:44,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8127 states, 8126 states have (on average 3.1316761014029044) internal successors, (25448), 8126 states have internal predecessors, (25448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:43:44,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8127 states to 8127 states and 25448 transitions. [2022-03-03 17:43:44,491 INFO L78 Accepts]: Start accepts. Automaton has 8127 states and 25448 transitions. Word has length 74 [2022-03-03 17:43:44,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:43:44,491 INFO L470 AbstractCegarLoop]: Abstraction has 8127 states and 25448 transitions. [2022-03-03 17:43:44,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.763157894736842) internal successors, (143), 38 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:43:44,492 INFO L276 IsEmpty]: Start isEmpty. Operand 8127 states and 25448 transitions. [2022-03-03 17:43:44,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:43:44,503 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:43:44,503 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:43:44,519 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2022-03-03 17:43:44,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,85 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:43:44,704 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:43:44,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:43:44,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1648189181, now seen corresponding path program 85 times [2022-03-03 17:43:44,706 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:43:44,706 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574012160] [2022-03-03 17:43:44,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:43:44,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:43:44,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:43:44,877 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:43:44,878 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:43:44,878 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574012160] [2022-03-03 17:43:44,878 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574012160] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:43:44,878 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818546251] [2022-03-03 17:43:44,878 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:43:44,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:43:44,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:43:44,879 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:43:44,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2022-03-03 17:43:44,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:43:44,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:43:44,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:43:45,366 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:43:45,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:43:45,900 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:43:45,901 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818546251] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:43:45,901 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:43:45,901 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-03-03 17:43:45,901 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046909182] [2022-03-03 17:43:45,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:43:45,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-03-03 17:43:45,901 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:43:45,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-03-03 17:43:45,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1303, Unknown=0, NotChecked=0, Total=1482 [2022-03-03 17:43:45,902 INFO L87 Difference]: Start difference. First operand 8127 states and 25448 transitions. Second operand has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:43:49,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:43:49,091 INFO L93 Difference]: Finished difference Result 11089 states and 33605 transitions. [2022-03-03 17:43:49,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-03-03 17:43:49,091 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:43:49,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:43:49,111 INFO L225 Difference]: With dead ends: 11089 [2022-03-03 17:43:49,111 INFO L226 Difference]: Without dead ends: 10987 [2022-03-03 17:43:49,112 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 124 SyntacticMatches, 3 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3168 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1322, Invalid=8980, Unknown=0, NotChecked=0, Total=10302 [2022-03-03 17:43:49,112 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 806 mSDsluCounter, 3211 mSDsCounter, 0 mSdLazyCounter, 1587 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 3280 SdHoareTripleChecker+Invalid, 1733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 1587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:43:49,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [806 Valid, 3280 Invalid, 1733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 1587 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:43:49,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10987 states. [2022-03-03 17:43:49,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10987 to 8147. [2022-03-03 17:43:49,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8147 states, 8146 states have (on average 3.132212128652099) internal successors, (25515), 8146 states have internal predecessors, (25515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:43:49,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8147 states to 8147 states and 25515 transitions. [2022-03-03 17:43:49,255 INFO L78 Accepts]: Start accepts. Automaton has 8147 states and 25515 transitions. Word has length 74 [2022-03-03 17:43:49,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:43:49,255 INFO L470 AbstractCegarLoop]: Abstraction has 8147 states and 25515 transitions. [2022-03-03 17:43:49,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:43:49,256 INFO L276 IsEmpty]: Start isEmpty. Operand 8147 states and 25515 transitions. [2022-03-03 17:43:49,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:43:49,270 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:43:49,270 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:43:49,286 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Forceful destruction successful, exit code 0 [2022-03-03 17:43:49,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2022-03-03 17:43:49,471 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:43:49,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:43:49,471 INFO L85 PathProgramCache]: Analyzing trace with hash 2002277353, now seen corresponding path program 86 times [2022-03-03 17:43:49,471 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:43:49,471 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138103401] [2022-03-03 17:43:49,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:43:49,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:43:49,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:43:49,674 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:43:49,674 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:43:49,674 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138103401] [2022-03-03 17:43:49,674 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138103401] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:43:49,674 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623818736] [2022-03-03 17:43:49,674 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:43:49,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:43:49,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:43:49,675 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:43:49,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2022-03-03 17:43:49,756 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:43:49,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:43:49,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:43:49,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:43:50,169 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:43:50,169 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:43:50,706 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:43:50,706 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623818736] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:43:50,706 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:43:50,706 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-03-03 17:43:50,706 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088161999] [2022-03-03 17:43:50,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:43:50,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-03-03 17:43:50,707 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:43:50,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-03-03 17:43:50,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=1295, Unknown=0, NotChecked=0, Total=1482 [2022-03-03 17:43:50,707 INFO L87 Difference]: Start difference. First operand 8147 states and 25515 transitions. Second operand has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:44:01,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:44:01,038 INFO L93 Difference]: Finished difference Result 16319 states and 48164 transitions. [2022-03-03 17:44:01,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 232 states. [2022-03-03 17:44:01,038 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:44:01,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:44:01,065 INFO L225 Difference]: With dead ends: 16319 [2022-03-03 17:44:01,065 INFO L226 Difference]: Without dead ends: 15821 [2022-03-03 17:44:01,067 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 124 SyntacticMatches, 3 SemanticMatches, 248 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24178 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=7498, Invalid=54752, Unknown=0, NotChecked=0, Total=62250 [2022-03-03 17:44:01,068 INFO L933 BasicCegarLoop]: 478 mSDtfsCounter, 1721 mSDsluCounter, 9081 mSDsCounter, 0 mSdLazyCounter, 4545 mSolverCounterSat, 348 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1721 SdHoareTripleChecker+Valid, 8883 SdHoareTripleChecker+Invalid, 4893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 348 IncrementalHoareTripleChecker+Valid, 4545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-03-03 17:44:01,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1721 Valid, 8883 Invalid, 4893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [348 Valid, 4545 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-03-03 17:44:01,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15821 states. [2022-03-03 17:44:01,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15821 to 8299. [2022-03-03 17:44:01,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8299 states, 8298 states have (on average 3.130995420583273) internal successors, (25981), 8298 states have internal predecessors, (25981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:44:01,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8299 states to 8299 states and 25981 transitions. [2022-03-03 17:44:01,251 INFO L78 Accepts]: Start accepts. Automaton has 8299 states and 25981 transitions. Word has length 74 [2022-03-03 17:44:01,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:44:01,251 INFO L470 AbstractCegarLoop]: Abstraction has 8299 states and 25981 transitions. [2022-03-03 17:44:01,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:44:01,251 INFO L276 IsEmpty]: Start isEmpty. Operand 8299 states and 25981 transitions. [2022-03-03 17:44:01,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:44:01,263 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:44:01,263 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:44:01,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Forceful destruction successful, exit code 0 [2022-03-03 17:44:01,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,87 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:44:01,464 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:44:01,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:44:01,464 INFO L85 PathProgramCache]: Analyzing trace with hash 250437531, now seen corresponding path program 87 times [2022-03-03 17:44:01,464 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:44:01,464 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105668709] [2022-03-03 17:44:01,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:44:01,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:44:01,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:44:01,657 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:44:01,657 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:44:01,658 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105668709] [2022-03-03 17:44:01,658 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105668709] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:44:01,658 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816964060] [2022-03-03 17:44:01,658 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:44:01,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:44:01,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:44:01,659 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:44:01,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2022-03-03 17:44:01,746 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 17:44:01,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:44:01,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 29 conjunts are in the unsatisfiable core [2022-03-03 17:44:01,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:44:02,344 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:44:02,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:44:03,598 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:44:03,598 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816964060] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:44:03,598 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:44:03,598 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 20, 20] total 48 [2022-03-03 17:44:03,598 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426503430] [2022-03-03 17:44:03,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:44:03,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-03 17:44:03,598 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:44:03,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-03 17:44:03,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=2045, Unknown=0, NotChecked=0, Total=2256 [2022-03-03 17:44:03,599 INFO L87 Difference]: Start difference. First operand 8299 states and 25981 transitions. Second operand has 48 states, 48 states have (on average 3.5208333333333335) internal successors, (169), 48 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:44:10,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:44:10,084 INFO L93 Difference]: Finished difference Result 13523 states and 41007 transitions. [2022-03-03 17:44:10,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2022-03-03 17:44:10,084 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 3.5208333333333335) internal successors, (169), 48 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:44:10,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:44:10,111 INFO L225 Difference]: With dead ends: 13523 [2022-03-03 17:44:10,111 INFO L226 Difference]: Without dead ends: 13421 [2022-03-03 17:44:10,112 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 117 SyntacticMatches, 1 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7512 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=2252, Invalid=20398, Unknown=0, NotChecked=0, Total=22650 [2022-03-03 17:44:10,112 INFO L933 BasicCegarLoop]: 221 mSDtfsCounter, 1584 mSDsluCounter, 4037 mSDsCounter, 0 mSdLazyCounter, 2234 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1584 SdHoareTripleChecker+Valid, 4047 SdHoareTripleChecker+Invalid, 2512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 2234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:44:10,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1584 Valid, 4047 Invalid, 2512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [278 Valid, 2234 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-03 17:44:10,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13421 states. [2022-03-03 17:44:10,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13421 to 8371. [2022-03-03 17:44:10,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8371 states, 8370 states have (on average 3.131063321385902) internal successors, (26207), 8370 states have internal predecessors, (26207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:44:10,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8371 states to 8371 states and 26207 transitions. [2022-03-03 17:44:10,249 INFO L78 Accepts]: Start accepts. Automaton has 8371 states and 26207 transitions. Word has length 74 [2022-03-03 17:44:10,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:44:10,249 INFO L470 AbstractCegarLoop]: Abstraction has 8371 states and 26207 transitions. [2022-03-03 17:44:10,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 3.5208333333333335) internal successors, (169), 48 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:44:10,249 INFO L276 IsEmpty]: Start isEmpty. Operand 8371 states and 26207 transitions. [2022-03-03 17:44:10,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:44:10,262 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:44:10,262 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:44:10,278 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Forceful destruction successful, exit code 0 [2022-03-03 17:44:10,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89,88 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:44:10,462 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:44:10,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:44:10,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1384385219, now seen corresponding path program 88 times [2022-03-03 17:44:10,463 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:44:10,463 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872129430] [2022-03-03 17:44:10,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:44:10,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:44:10,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:44:10,655 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:44:10,655 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:44:10,655 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872129430] [2022-03-03 17:44:10,655 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872129430] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:44:10,655 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305452522] [2022-03-03 17:44:10,655 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:44:10,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:44:10,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:44:10,656 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:44:10,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2022-03-03 17:44:10,734 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:44:10,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:44:10,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:44:10,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:44:11,192 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:44:11,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:44:11,938 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:44:11,938 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305452522] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:44:11,938 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:44:11,939 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-03-03 17:44:11,939 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101821494] [2022-03-03 17:44:11,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:44:11,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-03-03 17:44:11,939 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:44:11,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-03-03 17:44:11,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1324, Unknown=0, NotChecked=0, Total=1482 [2022-03-03 17:44:11,939 INFO L87 Difference]: Start difference. First operand 8371 states and 26207 transitions. Second operand has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:44:19,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:44:19,536 INFO L93 Difference]: Finished difference Result 14161 states and 42507 transitions. [2022-03-03 17:44:19,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2022-03-03 17:44:19,536 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:44:19,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:44:19,560 INFO L225 Difference]: With dead ends: 14161 [2022-03-03 17:44:19,560 INFO L226 Difference]: Without dead ends: 14008 [2022-03-03 17:44:19,561 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 124 SyntacticMatches, 3 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11407 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=2992, Invalid=28514, Unknown=0, NotChecked=0, Total=31506 [2022-03-03 17:44:19,562 INFO L933 BasicCegarLoop]: 284 mSDtfsCounter, 1138 mSDsluCounter, 5014 mSDsCounter, 0 mSdLazyCounter, 2729 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1138 SdHoareTripleChecker+Valid, 5068 SdHoareTripleChecker+Invalid, 2965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 2729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:44:19,562 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1138 Valid, 5068 Invalid, 2965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 2729 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-03 17:44:19,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14008 states. [2022-03-03 17:44:19,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14008 to 8775. [2022-03-03 17:44:19,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8775 states, 8774 states have (on average 3.1185320264417595) internal successors, (27362), 8774 states have internal predecessors, (27362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:44:19,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8775 states to 8775 states and 27362 transitions. [2022-03-03 17:44:19,712 INFO L78 Accepts]: Start accepts. Automaton has 8775 states and 27362 transitions. Word has length 74 [2022-03-03 17:44:19,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:44:19,745 INFO L470 AbstractCegarLoop]: Abstraction has 8775 states and 27362 transitions. [2022-03-03 17:44:19,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:44:19,745 INFO L276 IsEmpty]: Start isEmpty. Operand 8775 states and 27362 transitions. [2022-03-03 17:44:19,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:44:19,757 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:44:19,757 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:44:19,773 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Ended with exit code 0 [2022-03-03 17:44:19,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,89 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:44:19,958 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:44:19,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:44:19,958 INFO L85 PathProgramCache]: Analyzing trace with hash -270174689, now seen corresponding path program 89 times [2022-03-03 17:44:19,958 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:44:19,958 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891434344] [2022-03-03 17:44:19,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:44:19,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:44:19,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:44:20,144 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:44:20,144 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:44:20,144 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891434344] [2022-03-03 17:44:20,144 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891434344] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:44:20,144 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972944960] [2022-03-03 17:44:20,145 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:44:20,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:44:20,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:44:20,146 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:44:20,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2022-03-03 17:44:20,227 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 17:44:20,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:44:20,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:44:20,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:44:20,642 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:44:20,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:44:21,147 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:44:21,147 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972944960] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:44:21,147 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:44:21,147 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-03-03 17:44:21,147 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683791335] [2022-03-03 17:44:21,147 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:44:21,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-03-03 17:44:21,147 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:44:21,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-03-03 17:44:21,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1293, Unknown=0, NotChecked=0, Total=1482 [2022-03-03 17:44:21,148 INFO L87 Difference]: Start difference. First operand 8775 states and 27362 transitions. Second operand has 39 states, 39 states have (on average 3.6666666666666665) internal successors, (143), 39 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:44:24,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:44:24,907 INFO L93 Difference]: Finished difference Result 12607 states and 37881 transitions. [2022-03-03 17:44:24,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2022-03-03 17:44:24,907 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.6666666666666665) internal successors, (143), 39 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:44:24,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:44:24,927 INFO L225 Difference]: With dead ends: 12607 [2022-03-03 17:44:24,927 INFO L226 Difference]: Without dead ends: 12133 [2022-03-03 17:44:24,928 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 124 SyntacticMatches, 3 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6149 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2533, Invalid=16099, Unknown=0, NotChecked=0, Total=18632 [2022-03-03 17:44:24,928 INFO L933 BasicCegarLoop]: 279 mSDtfsCounter, 1593 mSDsluCounter, 4966 mSDsCounter, 0 mSdLazyCounter, 2548 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1593 SdHoareTripleChecker+Valid, 5037 SdHoareTripleChecker+Invalid, 2772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 2548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-03 17:44:24,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1593 Valid, 5037 Invalid, 2772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 2548 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-03 17:44:24,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12133 states. [2022-03-03 17:44:25,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12133 to 9259. [2022-03-03 17:44:25,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9259 states, 9258 states have (on average 3.113091380427738) internal successors, (28821), 9258 states have internal predecessors, (28821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:44:25,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9259 states to 9259 states and 28821 transitions. [2022-03-03 17:44:25,096 INFO L78 Accepts]: Start accepts. Automaton has 9259 states and 28821 transitions. Word has length 74 [2022-03-03 17:44:25,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:44:25,096 INFO L470 AbstractCegarLoop]: Abstraction has 9259 states and 28821 transitions. [2022-03-03 17:44:25,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.6666666666666665) internal successors, (143), 39 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:44:25,096 INFO L276 IsEmpty]: Start isEmpty. Operand 9259 states and 28821 transitions. [2022-03-03 17:44:25,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:44:25,111 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:44:25,111 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:44:25,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Forceful destruction successful, exit code 0 [2022-03-03 17:44:25,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable91 [2022-03-03 17:44:25,312 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:44:25,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:44:25,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1690876699, now seen corresponding path program 90 times [2022-03-03 17:44:25,312 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:44:25,312 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782231924] [2022-03-03 17:44:25,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:44:25,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:44:25,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:44:25,489 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:44:25,490 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:44:25,490 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782231924] [2022-03-03 17:44:25,490 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782231924] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:44:25,490 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250847122] [2022-03-03 17:44:25,490 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:44:25,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:44:25,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:44:25,491 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:44:25,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2022-03-03 17:44:25,574 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-03 17:44:25,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:44:25,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:44:25,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:44:26,020 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:44:26,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:44:26,527 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:44:26,527 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250847122] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:44:26,527 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:44:26,527 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-03-03 17:44:26,527 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466333674] [2022-03-03 17:44:26,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:44:26,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-03-03 17:44:26,527 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:44:26,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-03-03 17:44:26,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1313, Unknown=0, NotChecked=0, Total=1482 [2022-03-03 17:44:26,528 INFO L87 Difference]: Start difference. First operand 9259 states and 28821 transitions. Second operand has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:44:32,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:44:32,550 INFO L93 Difference]: Finished difference Result 14690 states and 43638 transitions. [2022-03-03 17:44:32,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2022-03-03 17:44:32,550 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:44:32,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:44:32,593 INFO L225 Difference]: With dead ends: 14690 [2022-03-03 17:44:32,593 INFO L226 Difference]: Without dead ends: 14486 [2022-03-03 17:44:32,594 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 124 SyntacticMatches, 3 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12272 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=3398, Invalid=29908, Unknown=0, NotChecked=0, Total=33306 [2022-03-03 17:44:32,594 INFO L933 BasicCegarLoop]: 324 mSDtfsCounter, 1389 mSDsluCounter, 5348 mSDsCounter, 0 mSdLazyCounter, 2692 mSolverCounterSat, 294 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1389 SdHoareTripleChecker+Valid, 5448 SdHoareTripleChecker+Invalid, 2986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 294 IncrementalHoareTripleChecker+Valid, 2692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:44:32,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1389 Valid, 5448 Invalid, 2986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [294 Valid, 2692 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-03 17:44:32,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14486 states. [2022-03-03 17:44:32,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14486 to 9395. [2022-03-03 17:44:32,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9395 states, 9394 states have (on average 3.1129444326165636) internal successors, (29243), 9394 states have internal predecessors, (29243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:44:32,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9395 states to 9395 states and 29243 transitions. [2022-03-03 17:44:32,780 INFO L78 Accepts]: Start accepts. Automaton has 9395 states and 29243 transitions. Word has length 74 [2022-03-03 17:44:32,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:44:32,780 INFO L470 AbstractCegarLoop]: Abstraction has 9395 states and 29243 transitions. [2022-03-03 17:44:32,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:44:32,781 INFO L276 IsEmpty]: Start isEmpty. Operand 9395 states and 29243 transitions. [2022-03-03 17:44:32,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:44:32,794 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:44:32,794 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:44:32,813 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Forceful destruction successful, exit code 0 [2022-03-03 17:44:32,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,91 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:44:32,995 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:44:32,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:44:32,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1936259769, now seen corresponding path program 91 times [2022-03-03 17:44:32,996 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:44:32,996 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968174071] [2022-03-03 17:44:32,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:44:32,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:44:33,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:44:33,194 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:44:33,194 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:44:33,194 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968174071] [2022-03-03 17:44:33,194 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968174071] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:44:33,194 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333144731] [2022-03-03 17:44:33,194 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:44:33,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:44:33,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:44:33,195 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:44:33,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2022-03-03 17:44:33,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:44:33,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:44:33,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:44:33,705 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:44:33,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:44:34,138 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:44:34,138 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333144731] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:44:34,138 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:44:34,138 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 38 [2022-03-03 17:44:34,139 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037074913] [2022-03-03 17:44:34,139 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:44:34,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-03-03 17:44:34,139 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:44:34,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-03-03 17:44:34,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1238, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 17:44:34,139 INFO L87 Difference]: Start difference. First operand 9395 states and 29243 transitions. Second operand has 38 states, 38 states have (on average 3.736842105263158) internal successors, (142), 38 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:44:35,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:44:35,800 INFO L93 Difference]: Finished difference Result 12355 states and 37524 transitions. [2022-03-03 17:44:35,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-03-03 17:44:35,800 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.736842105263158) internal successors, (142), 38 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:44:35,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:44:35,821 INFO L225 Difference]: With dead ends: 12355 [2022-03-03 17:44:35,821 INFO L226 Difference]: Without dead ends: 12253 [2022-03-03 17:44:35,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 125 SyntacticMatches, 3 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2201 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=839, Invalid=6643, Unknown=0, NotChecked=0, Total=7482 [2022-03-03 17:44:35,822 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 652 mSDsluCounter, 3677 mSDsCounter, 0 mSdLazyCounter, 1320 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 652 SdHoareTripleChecker+Valid, 3691 SdHoareTripleChecker+Invalid, 1400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:44:35,822 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [652 Valid, 3691 Invalid, 1400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1320 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:44:35,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12253 states. [2022-03-03 17:44:35,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12253 to 9455. [2022-03-03 17:44:35,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9455 states, 9454 states have (on average 3.1085254918552994) internal successors, (29388), 9454 states have internal predecessors, (29388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:44:35,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9455 states to 9455 states and 29388 transitions. [2022-03-03 17:44:35,975 INFO L78 Accepts]: Start accepts. Automaton has 9455 states and 29388 transitions. Word has length 74 [2022-03-03 17:44:35,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:44:35,975 INFO L470 AbstractCegarLoop]: Abstraction has 9455 states and 29388 transitions. [2022-03-03 17:44:35,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.736842105263158) internal successors, (142), 38 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:44:35,975 INFO L276 IsEmpty]: Start isEmpty. Operand 9455 states and 29388 transitions. [2022-03-03 17:44:35,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:44:35,989 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:44:35,989 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:44:36,005 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Forceful destruction successful, exit code 0 [2022-03-03 17:44:36,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,92 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:44:36,189 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:44:36,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:44:36,190 INFO L85 PathProgramCache]: Analyzing trace with hash -525424113, now seen corresponding path program 92 times [2022-03-03 17:44:36,190 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:44:36,190 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424639319] [2022-03-03 17:44:36,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:44:36,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:44:36,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:44:36,394 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:44:36,395 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:44:36,395 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424639319] [2022-03-03 17:44:36,395 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424639319] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:44:36,395 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803173920] [2022-03-03 17:44:36,395 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:44:36,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:44:36,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:44:36,396 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:44:36,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2022-03-03 17:44:36,483 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:44:36,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:44:36,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:44:36,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:44:36,953 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:44:36,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:44:37,383 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:44:37,383 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [803173920] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:44:37,383 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:44:37,383 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-03-03 17:44:37,383 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196773524] [2022-03-03 17:44:37,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:44:37,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-03-03 17:44:37,384 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:44:37,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-03-03 17:44:37,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1303, Unknown=0, NotChecked=0, Total=1482 [2022-03-03 17:44:37,384 INFO L87 Difference]: Start difference. First operand 9455 states and 29388 transitions. Second operand has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:44:39,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:44:39,960 INFO L93 Difference]: Finished difference Result 12732 states and 38411 transitions. [2022-03-03 17:44:39,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-03-03 17:44:39,960 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:44:39,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:44:39,984 INFO L225 Difference]: With dead ends: 12732 [2022-03-03 17:44:39,984 INFO L226 Difference]: Without dead ends: 12579 [2022-03-03 17:44:39,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3656 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1364, Invalid=10408, Unknown=0, NotChecked=0, Total=11772 [2022-03-03 17:44:39,986 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 807 mSDsluCounter, 3923 mSDsCounter, 0 mSdLazyCounter, 1820 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 807 SdHoareTripleChecker+Valid, 3941 SdHoareTripleChecker+Invalid, 1913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 17:44:39,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [807 Valid, 3941 Invalid, 1913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1820 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 17:44:39,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12579 states. [2022-03-03 17:44:40,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12579 to 9711. [2022-03-03 17:44:40,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9711 states, 9710 states have (on average 3.1159629248197733) internal successors, (30256), 9710 states have internal predecessors, (30256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:44:40,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9711 states to 9711 states and 30256 transitions. [2022-03-03 17:44:40,170 INFO L78 Accepts]: Start accepts. Automaton has 9711 states and 30256 transitions. Word has length 74 [2022-03-03 17:44:40,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:44:40,170 INFO L470 AbstractCegarLoop]: Abstraction has 9711 states and 30256 transitions. [2022-03-03 17:44:40,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:44:40,170 INFO L276 IsEmpty]: Start isEmpty. Operand 9711 states and 30256 transitions. [2022-03-03 17:44:40,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:44:40,185 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:44:40,185 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:44:40,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Forceful destruction successful, exit code 0 [2022-03-03 17:44:40,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,93 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:44:40,386 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:44:40,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:44:40,386 INFO L85 PathProgramCache]: Analyzing trace with hash -504706727, now seen corresponding path program 93 times [2022-03-03 17:44:40,386 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:44:40,386 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079498584] [2022-03-03 17:44:40,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:44:40,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:44:40,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:44:40,567 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:44:40,567 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:44:40,567 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079498584] [2022-03-03 17:44:40,567 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079498584] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:44:40,567 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241963520] [2022-03-03 17:44:40,567 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:44:40,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:44:40,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:44:40,568 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:44:40,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2022-03-03 17:44:40,653 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-03 17:44:40,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:44:40,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:44:40,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:44:41,113 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:44:41,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:44:41,627 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:44:41,628 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241963520] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:44:41,628 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:44:41,628 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-03-03 17:44:41,628 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125064239] [2022-03-03 17:44:41,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:44:41,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-03-03 17:44:41,628 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:44:41,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-03-03 17:44:41,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1372, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 17:44:41,629 INFO L87 Difference]: Start difference. First operand 9711 states and 30256 transitions. Second operand has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:44:44,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:44:44,543 INFO L93 Difference]: Finished difference Result 12733 states and 38466 transitions. [2022-03-03 17:44:44,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-03-03 17:44:44,543 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:44:44,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:44:44,567 INFO L225 Difference]: With dead ends: 12733 [2022-03-03 17:44:44,567 INFO L226 Difference]: Without dead ends: 12631 [2022-03-03 17:44:44,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2737 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1118, Invalid=8194, Unknown=0, NotChecked=0, Total=9312 [2022-03-03 17:44:44,568 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 850 mSDsluCounter, 3005 mSDsCounter, 0 mSdLazyCounter, 1525 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 3096 SdHoareTripleChecker+Invalid, 1652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:44:44,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [850 Valid, 3096 Invalid, 1652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1525 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:44:44,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12631 states. [2022-03-03 17:44:44,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12631 to 9727. [2022-03-03 17:44:44,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9727 states, 9726 states have (on average 3.1161834258688055) internal successors, (30308), 9726 states have internal predecessors, (30308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:44:44,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9727 states to 9727 states and 30308 transitions. [2022-03-03 17:44:44,737 INFO L78 Accepts]: Start accepts. Automaton has 9727 states and 30308 transitions. Word has length 74 [2022-03-03 17:44:44,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:44:44,738 INFO L470 AbstractCegarLoop]: Abstraction has 9727 states and 30308 transitions. [2022-03-03 17:44:44,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:44:44,738 INFO L276 IsEmpty]: Start isEmpty. Operand 9727 states and 30308 transitions. [2022-03-03 17:44:44,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:44:44,751 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:44:44,751 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:44:44,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Forceful destruction successful, exit code 0 [2022-03-03 17:44:44,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,94 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:44:44,952 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:44:44,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:44:44,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1149207489, now seen corresponding path program 94 times [2022-03-03 17:44:44,952 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:44:44,952 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182927635] [2022-03-03 17:44:44,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:44:44,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:44:44,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:44:45,151 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:44:45,151 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:44:45,151 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182927635] [2022-03-03 17:44:45,151 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182927635] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:44:45,151 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558115841] [2022-03-03 17:44:45,151 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:44:45,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:44:45,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:44:45,152 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:44:45,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2022-03-03 17:44:45,237 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:44:45,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:44:45,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:44:45,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:44:45,675 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:44:45,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:44:46,120 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:44:46,121 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558115841] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:44:46,121 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:44:46,121 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-03-03 17:44:46,121 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942636322] [2022-03-03 17:44:46,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:44:46,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-03-03 17:44:46,121 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:44:46,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-03-03 17:44:46,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=1367, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 17:44:46,122 INFO L87 Difference]: Start difference. First operand 9727 states and 30308 transitions. Second operand has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:44:55,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:44:55,773 INFO L93 Difference]: Finished difference Result 17969 states and 52462 transitions. [2022-03-03 17:44:55,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 233 states. [2022-03-03 17:44:55,773 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:44:55,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:44:55,804 INFO L225 Difference]: With dead ends: 17969 [2022-03-03 17:44:55,804 INFO L226 Difference]: Without dead ends: 17450 [2022-03-03 17:44:55,807 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 251 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24669 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=8239, Invalid=55517, Unknown=0, NotChecked=0, Total=63756 [2022-03-03 17:44:55,808 INFO L933 BasicCegarLoop]: 424 mSDtfsCounter, 2179 mSDsluCounter, 7176 mSDsCounter, 0 mSdLazyCounter, 3772 mSolverCounterSat, 348 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2179 SdHoareTripleChecker+Valid, 7191 SdHoareTripleChecker+Invalid, 4120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 348 IncrementalHoareTripleChecker+Valid, 3772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:44:55,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2179 Valid, 7191 Invalid, 4120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [348 Valid, 3772 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-03 17:44:55,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17450 states. [2022-03-03 17:44:56,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17450 to 10119. [2022-03-03 17:44:56,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10119 states, 10118 states have (on average 3.1241352045858863) internal successors, (31610), 10118 states have internal predecessors, (31610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:44:56,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10119 states to 10119 states and 31610 transitions. [2022-03-03 17:44:56,038 INFO L78 Accepts]: Start accepts. Automaton has 10119 states and 31610 transitions. Word has length 74 [2022-03-03 17:44:56,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:44:56,038 INFO L470 AbstractCegarLoop]: Abstraction has 10119 states and 31610 transitions. [2022-03-03 17:44:56,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:44:56,038 INFO L276 IsEmpty]: Start isEmpty. Operand 10119 states and 31610 transitions. [2022-03-03 17:44:56,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:44:56,054 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:44:56,054 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:44:56,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Forceful destruction successful, exit code 0 [2022-03-03 17:44:56,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable96 [2022-03-03 17:44:56,254 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:44:56,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:44:56,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1263759537, now seen corresponding path program 95 times [2022-03-03 17:44:56,255 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:44:56,255 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998532338] [2022-03-03 17:44:56,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:44:56,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:44:56,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:44:56,459 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:44:56,459 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:44:56,459 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998532338] [2022-03-03 17:44:56,459 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998532338] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:44:56,459 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296171473] [2022-03-03 17:44:56,459 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:44:56,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:44:56,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:44:56,461 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:44:56,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2022-03-03 17:44:56,546 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 17:44:56,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:44:56,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:44:56,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:44:57,008 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:44:57,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:44:57,764 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:44:57,764 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1296171473] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:44:57,764 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:44:57,765 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-03-03 17:44:57,765 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820572951] [2022-03-03 17:44:57,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:44:57,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-03-03 17:44:57,765 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:44:57,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-03-03 17:44:57,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1402, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 17:44:57,765 INFO L87 Difference]: Start difference. First operand 10119 states and 31610 transitions. Second operand has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:02,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:45:02,736 INFO L93 Difference]: Finished difference Result 14283 states and 43308 transitions. [2022-03-03 17:45:02,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2022-03-03 17:45:02,737 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:45:02,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:45:02,782 INFO L225 Difference]: With dead ends: 14283 [2022-03-03 17:45:02,783 INFO L226 Difference]: Without dead ends: 14004 [2022-03-03 17:45:02,783 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6502 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1744, Invalid=17996, Unknown=0, NotChecked=0, Total=19740 [2022-03-03 17:45:02,784 INFO L933 BasicCegarLoop]: 241 mSDtfsCounter, 902 mSDsluCounter, 4634 mSDsCounter, 0 mSdLazyCounter, 2593 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 902 SdHoareTripleChecker+Valid, 4693 SdHoareTripleChecker+Invalid, 2751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 2593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:45:02,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [902 Valid, 4693 Invalid, 2751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 2593 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-03 17:45:02,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14004 states. [2022-03-03 17:45:02,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14004 to 11151. [2022-03-03 17:45:02,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11151 states, 11150 states have (on average 3.1182062780269058) internal successors, (34768), 11150 states have internal predecessors, (34768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:02,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11151 states to 11151 states and 34768 transitions. [2022-03-03 17:45:02,974 INFO L78 Accepts]: Start accepts. Automaton has 11151 states and 34768 transitions. Word has length 74 [2022-03-03 17:45:02,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:45:02,974 INFO L470 AbstractCegarLoop]: Abstraction has 11151 states and 34768 transitions. [2022-03-03 17:45:02,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:02,974 INFO L276 IsEmpty]: Start isEmpty. Operand 11151 states and 34768 transitions. [2022-03-03 17:45:02,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:45:02,991 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:45:02,991 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:45:03,009 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Forceful destruction successful, exit code 0 [2022-03-03 17:45:03,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable97 [2022-03-03 17:45:03,191 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:45:03,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:45:03,192 INFO L85 PathProgramCache]: Analyzing trace with hash -914776021, now seen corresponding path program 96 times [2022-03-03 17:45:03,192 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:45:03,192 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960774663] [2022-03-03 17:45:03,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:45:03,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:45:03,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:45:03,422 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:45:03,422 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:45:03,422 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960774663] [2022-03-03 17:45:03,422 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960774663] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:45:03,422 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733319492] [2022-03-03 17:45:03,422 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:45:03,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:45:03,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:45:03,423 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:45:03,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2022-03-03 17:45:03,512 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-03 17:45:03,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:45:03,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:45:03,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:45:03,954 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:45:03,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:45:04,634 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:45:04,635 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733319492] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:45:04,635 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:45:04,635 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-03-03 17:45:04,635 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796780812] [2022-03-03 17:45:04,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:45:04,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-03-03 17:45:04,635 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:45:04,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-03-03 17:45:04,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1387, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 17:45:04,636 INFO L87 Difference]: Start difference. First operand 11151 states and 34768 transitions. Second operand has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:13,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:45:13,575 INFO L93 Difference]: Finished difference Result 16933 states and 50803 transitions. [2022-03-03 17:45:13,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2022-03-03 17:45:13,575 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:45:13,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:45:13,612 INFO L225 Difference]: With dead ends: 16933 [2022-03-03 17:45:13,613 INFO L226 Difference]: Without dead ends: 16408 [2022-03-03 17:45:13,615 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14183 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=3426, Invalid=35186, Unknown=0, NotChecked=0, Total=38612 [2022-03-03 17:45:13,615 INFO L933 BasicCegarLoop]: 378 mSDtfsCounter, 1409 mSDsluCounter, 7377 mSDsCounter, 0 mSdLazyCounter, 3984 mSolverCounterSat, 279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1409 SdHoareTripleChecker+Valid, 7452 SdHoareTripleChecker+Invalid, 4263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 279 IncrementalHoareTripleChecker+Valid, 3984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:45:13,615 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1409 Valid, 7452 Invalid, 4263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [279 Valid, 3984 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-03 17:45:13,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16408 states. [2022-03-03 17:45:13,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16408 to 11567. [2022-03-03 17:45:13,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11567 states, 11566 states have (on average 3.1322842815147847) internal successors, (36228), 11566 states have internal predecessors, (36228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:13,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11567 states to 11567 states and 36228 transitions. [2022-03-03 17:45:13,876 INFO L78 Accepts]: Start accepts. Automaton has 11567 states and 36228 transitions. Word has length 74 [2022-03-03 17:45:13,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:45:13,876 INFO L470 AbstractCegarLoop]: Abstraction has 11567 states and 36228 transitions. [2022-03-03 17:45:13,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:13,876 INFO L276 IsEmpty]: Start isEmpty. Operand 11567 states and 36228 transitions. [2022-03-03 17:45:13,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:45:13,894 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:45:13,894 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:45:13,911 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Forceful destruction successful, exit code 0 [2022-03-03 17:45:14,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,97 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:45:14,097 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:45:14,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:45:14,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1658397179, now seen corresponding path program 97 times [2022-03-03 17:45:14,097 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:45:14,097 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387462920] [2022-03-03 17:45:14,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:45:14,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:45:14,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:45:14,295 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:45:14,296 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:45:14,296 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387462920] [2022-03-03 17:45:14,296 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387462920] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:45:14,296 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922875386] [2022-03-03 17:45:14,296 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:45:14,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:45:14,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:45:14,298 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:45:14,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2022-03-03 17:45:14,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:45:14,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:45:14,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:45:14,893 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:45:14,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:45:15,612 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:45:15,612 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922875386] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:45:15,612 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:45:15,612 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-03-03 17:45:15,612 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548576644] [2022-03-03 17:45:15,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:45:15,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-03-03 17:45:15,612 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:45:15,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-03-03 17:45:15,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1402, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 17:45:15,613 INFO L87 Difference]: Start difference. First operand 11567 states and 36228 transitions. Second operand has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:20,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:45:20,079 INFO L93 Difference]: Finished difference Result 15141 states and 46225 transitions. [2022-03-03 17:45:20,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2022-03-03 17:45:20,079 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:45:20,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:45:20,107 INFO L225 Difference]: With dead ends: 15141 [2022-03-03 17:45:20,107 INFO L226 Difference]: Without dead ends: 14928 [2022-03-03 17:45:20,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5529 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1507, Invalid=15785, Unknown=0, NotChecked=0, Total=17292 [2022-03-03 17:45:20,108 INFO L933 BasicCegarLoop]: 258 mSDtfsCounter, 862 mSDsluCounter, 4381 mSDsCounter, 0 mSdLazyCounter, 2386 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 4522 SdHoareTripleChecker+Invalid, 2551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 2386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-03 17:45:20,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [862 Valid, 4522 Invalid, 2551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 2386 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-03 17:45:20,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14928 states. [2022-03-03 17:45:20,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14928 to 12035. [2022-03-03 17:45:20,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12035 states, 12034 states have (on average 3.1320425461193286) internal successors, (37691), 12034 states have internal predecessors, (37691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:20,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12035 states to 12035 states and 37691 transitions. [2022-03-03 17:45:20,336 INFO L78 Accepts]: Start accepts. Automaton has 12035 states and 37691 transitions. Word has length 74 [2022-03-03 17:45:20,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:45:20,336 INFO L470 AbstractCegarLoop]: Abstraction has 12035 states and 37691 transitions. [2022-03-03 17:45:20,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:20,336 INFO L276 IsEmpty]: Start isEmpty. Operand 12035 states and 37691 transitions. [2022-03-03 17:45:20,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:45:20,353 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:45:20,353 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:45:20,369 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Ended with exit code 0 [2022-03-03 17:45:20,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,98 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:45:20,561 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:45:20,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:45:20,562 INFO L85 PathProgramCache]: Analyzing trace with hash 2007380695, now seen corresponding path program 98 times [2022-03-03 17:45:20,562 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:45:20,562 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177223273] [2022-03-03 17:45:20,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:45:20,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:45:20,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:45:20,815 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:45:20,815 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:45:20,815 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177223273] [2022-03-03 17:45:20,815 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177223273] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:45:20,815 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48837080] [2022-03-03 17:45:20,815 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:45:20,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:45:20,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:45:20,816 INFO L229 MonitoredProcess]: Starting monitored process 99 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:45:20,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2022-03-03 17:45:20,904 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:45:20,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:45:20,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:45:20,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:45:21,379 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:45:21,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:45:22,018 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:45:22,019 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48837080] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:45:22,019 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:45:22,019 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-03-03 17:45:22,019 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898197459] [2022-03-03 17:45:22,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:45:22,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-03-03 17:45:22,019 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:45:22,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-03-03 17:45:22,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1391, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 17:45:22,020 INFO L87 Difference]: Start difference. First operand 12035 states and 37691 transitions. Second operand has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:30,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:45:30,203 INFO L93 Difference]: Finished difference Result 18266 states and 55335 transitions. [2022-03-03 17:45:30,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2022-03-03 17:45:30,203 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:45:30,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:45:30,241 INFO L225 Difference]: With dead ends: 18266 [2022-03-03 17:45:30,241 INFO L226 Difference]: Without dead ends: 17771 [2022-03-03 17:45:30,242 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12665 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=3170, Invalid=31986, Unknown=0, NotChecked=0, Total=35156 [2022-03-03 17:45:30,242 INFO L933 BasicCegarLoop]: 370 mSDtfsCounter, 1388 mSDsluCounter, 7728 mSDsCounter, 0 mSdLazyCounter, 4133 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1388 SdHoareTripleChecker+Valid, 7819 SdHoareTripleChecker+Invalid, 4393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 4133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:45:30,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1388 Valid, 7819 Invalid, 4393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 4133 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-03 17:45:30,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17771 states. [2022-03-03 17:45:30,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17771 to 12519. [2022-03-03 17:45:30,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12519 states, 12518 states have (on average 3.1578526921233423) internal successors, (39530), 12518 states have internal predecessors, (39530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:30,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12519 states to 12519 states and 39530 transitions. [2022-03-03 17:45:30,572 INFO L78 Accepts]: Start accepts. Automaton has 12519 states and 39530 transitions. Word has length 74 [2022-03-03 17:45:30,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:45:30,572 INFO L470 AbstractCegarLoop]: Abstraction has 12519 states and 39530 transitions. [2022-03-03 17:45:30,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:30,572 INFO L276 IsEmpty]: Start isEmpty. Operand 12519 states and 39530 transitions. [2022-03-03 17:45:30,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:45:30,592 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:45:30,593 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:45:30,609 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Forceful destruction successful, exit code 0 [2022-03-03 17:45:30,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2022-03-03 17:45:30,794 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:45:30,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:45:30,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1221977889, now seen corresponding path program 99 times [2022-03-03 17:45:30,795 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:45:30,795 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872998150] [2022-03-03 17:45:30,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:45:30,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:45:30,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:45:31,018 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:45:31,018 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:45:31,018 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872998150] [2022-03-03 17:45:31,018 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872998150] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:45:31,018 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052394248] [2022-03-03 17:45:31,018 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:45:31,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:45:31,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:45:31,019 INFO L229 MonitoredProcess]: Starting monitored process 100 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:45:31,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2022-03-03 17:45:31,109 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 17:45:31,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:45:31,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-03 17:45:31,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:45:31,835 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:45:31,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:45:32,731 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:45:32,731 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052394248] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:45:32,732 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:45:32,732 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 20, 21] total 49 [2022-03-03 17:45:32,732 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246000872] [2022-03-03 17:45:32,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:45:32,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-03-03 17:45:32,732 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:45:32,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-03-03 17:45:32,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=2114, Unknown=0, NotChecked=0, Total=2352 [2022-03-03 17:45:32,733 INFO L87 Difference]: Start difference. First operand 12519 states and 39530 transitions. Second operand has 49 states, 49 states have (on average 3.4081632653061225) internal successors, (167), 49 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:38,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:45:38,669 INFO L93 Difference]: Finished difference Result 16738 states and 51308 transitions. [2022-03-03 17:45:38,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-03-03 17:45:38,669 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 3.4081632653061225) internal successors, (167), 49 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:45:38,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:45:38,705 INFO L225 Difference]: With dead ends: 16738 [2022-03-03 17:45:38,705 INFO L226 Difference]: Without dead ends: 16576 [2022-03-03 17:45:38,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5471 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=2129, Invalid=16777, Unknown=0, NotChecked=0, Total=18906 [2022-03-03 17:45:38,707 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 1341 mSDsluCounter, 3703 mSDsCounter, 0 mSdLazyCounter, 2422 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1341 SdHoareTripleChecker+Valid, 3725 SdHoareTripleChecker+Invalid, 2606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 2422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-03 17:45:38,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1341 Valid, 3725 Invalid, 2606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 2422 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-03 17:45:38,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16576 states. [2022-03-03 17:45:38,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16576 to 12727. [2022-03-03 17:45:38,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12727 states, 12726 states have (on average 3.165959453088166) internal successors, (40290), 12726 states have internal predecessors, (40290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:38,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12727 states to 12727 states and 40290 transitions. [2022-03-03 17:45:38,969 INFO L78 Accepts]: Start accepts. Automaton has 12727 states and 40290 transitions. Word has length 74 [2022-03-03 17:45:38,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:45:38,969 INFO L470 AbstractCegarLoop]: Abstraction has 12727 states and 40290 transitions. [2022-03-03 17:45:38,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 3.4081632653061225) internal successors, (167), 49 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:38,969 INFO L276 IsEmpty]: Start isEmpty. Operand 12727 states and 40290 transitions. [2022-03-03 17:45:38,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:45:38,989 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:45:38,989 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:45:39,005 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Forceful destruction successful, exit code 0 [2022-03-03 17:45:39,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101,100 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:45:39,190 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:45:39,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:45:39,190 INFO L85 PathProgramCache]: Analyzing trace with hash -591710751, now seen corresponding path program 100 times [2022-03-03 17:45:39,190 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:45:39,190 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240302584] [2022-03-03 17:45:39,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:45:39,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:45:39,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:45:39,383 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:45:39,383 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:45:39,383 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240302584] [2022-03-03 17:45:39,383 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240302584] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:45:39,383 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846840140] [2022-03-03 17:45:39,383 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:45:39,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:45:39,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:45:39,384 INFO L229 MonitoredProcess]: Starting monitored process 101 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:45:39,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2022-03-03 17:45:39,470 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:45:39,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:45:39,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:45:39,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:45:39,926 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:45:39,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:45:40,555 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:45:40,555 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846840140] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:45:40,555 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:45:40,555 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-03-03 17:45:40,555 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215968299] [2022-03-03 17:45:40,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:45:40,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-03-03 17:45:40,555 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:45:40,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-03-03 17:45:40,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1402, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 17:45:40,556 INFO L87 Difference]: Start difference. First operand 12727 states and 40290 transitions. Second operand has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:51,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:45:51,237 INFO L93 Difference]: Finished difference Result 21319 states and 64920 transitions. [2022-03-03 17:45:51,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2022-03-03 17:45:51,237 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:45:51,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:45:51,284 INFO L225 Difference]: With dead ends: 21319 [2022-03-03 17:45:51,284 INFO L226 Difference]: Without dead ends: 21115 [2022-03-03 17:45:51,286 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18686 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=4394, Invalid=43348, Unknown=0, NotChecked=0, Total=47742 [2022-03-03 17:45:51,286 INFO L933 BasicCegarLoop]: 373 mSDtfsCounter, 1619 mSDsluCounter, 6823 mSDsCounter, 0 mSdLazyCounter, 3830 mSolverCounterSat, 280 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1619 SdHoareTripleChecker+Valid, 6964 SdHoareTripleChecker+Invalid, 4110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 280 IncrementalHoareTripleChecker+Valid, 3830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:45:51,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1619 Valid, 6964 Invalid, 4110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [280 Valid, 3830 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-03 17:45:51,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21115 states. [2022-03-03 17:45:51,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21115 to 14347. [2022-03-03 17:45:51,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14347 states, 14346 states have (on average 3.182001951763558) internal successors, (45649), 14346 states have internal predecessors, (45649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:51,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14347 states to 14347 states and 45649 transitions. [2022-03-03 17:45:51,596 INFO L78 Accepts]: Start accepts. Automaton has 14347 states and 45649 transitions. Word has length 74 [2022-03-03 17:45:51,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:45:51,596 INFO L470 AbstractCegarLoop]: Abstraction has 14347 states and 45649 transitions. [2022-03-03 17:45:51,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:51,597 INFO L276 IsEmpty]: Start isEmpty. Operand 14347 states and 45649 transitions. [2022-03-03 17:45:51,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:45:51,619 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:45:51,619 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:45:51,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Forceful destruction successful, exit code 0 [2022-03-03 17:45:51,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2022-03-03 17:45:51,820 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:45:51,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:45:51,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1265584007, now seen corresponding path program 101 times [2022-03-03 17:45:51,820 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:45:51,820 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332258056] [2022-03-03 17:45:51,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:45:51,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:45:51,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:45:52,014 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:45:52,015 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:45:52,015 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332258056] [2022-03-03 17:45:52,015 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332258056] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:45:52,015 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006939038] [2022-03-03 17:45:52,015 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:45:52,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:45:52,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:45:52,016 INFO L229 MonitoredProcess]: Starting monitored process 102 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:45:52,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2022-03-03 17:45:52,105 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 17:45:52,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:45:52,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:45:52,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:45:52,551 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:45:52,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:45:53,199 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:45:53,199 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2006939038] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:45:53,199 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:45:53,199 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-03-03 17:45:53,199 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851873721] [2022-03-03 17:45:53,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:45:53,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-03-03 17:45:53,199 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:45:53,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-03-03 17:45:53,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1402, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 17:45:53,200 INFO L87 Difference]: Start difference. First operand 14347 states and 45649 transitions. Second operand has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:04,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:46:04,224 INFO L93 Difference]: Finished difference Result 22070 states and 67298 transitions. [2022-03-03 17:46:04,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 198 states. [2022-03-03 17:46:04,224 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:46:04,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:46:04,264 INFO L225 Difference]: With dead ends: 22070 [2022-03-03 17:46:04,264 INFO L226 Difference]: Without dead ends: 21560 [2022-03-03 17:46:04,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18825 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=4518, Invalid=44544, Unknown=0, NotChecked=0, Total=49062 [2022-03-03 17:46:04,266 INFO L933 BasicCegarLoop]: 379 mSDtfsCounter, 1471 mSDsluCounter, 7705 mSDsCounter, 0 mSdLazyCounter, 4198 mSolverCounterSat, 300 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1471 SdHoareTripleChecker+Valid, 7834 SdHoareTripleChecker+Invalid, 4498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 300 IncrementalHoareTripleChecker+Valid, 4198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:46:04,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1471 Valid, 7834 Invalid, 4498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [300 Valid, 4198 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-03-03 17:46:04,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21560 states. [2022-03-03 17:46:04,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21560 to 14375. [2022-03-03 17:46:04,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14375 states, 14374 states have (on average 3.1789341867260332) internal successors, (45694), 14374 states have internal predecessors, (45694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:04,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14375 states to 14375 states and 45694 transitions. [2022-03-03 17:46:04,550 INFO L78 Accepts]: Start accepts. Automaton has 14375 states and 45694 transitions. Word has length 74 [2022-03-03 17:46:04,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:46:04,550 INFO L470 AbstractCegarLoop]: Abstraction has 14375 states and 45694 transitions. [2022-03-03 17:46:04,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:04,551 INFO L276 IsEmpty]: Start isEmpty. Operand 14375 states and 45694 transitions. [2022-03-03 17:46:04,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:46:04,573 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:46:04,573 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:46:04,589 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Forceful destruction successful, exit code 0 [2022-03-03 17:46:04,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2022-03-03 17:46:04,774 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:46:04,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:46:04,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1021008305, now seen corresponding path program 102 times [2022-03-03 17:46:04,774 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:46:04,774 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146565866] [2022-03-03 17:46:04,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:46:04,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:46:04,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:46:04,961 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:46:04,961 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:46:04,961 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146565866] [2022-03-03 17:46:04,961 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146565866] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:46:04,961 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368771844] [2022-03-03 17:46:04,961 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:46:04,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:46:04,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:46:04,963 INFO L229 MonitoredProcess]: Starting monitored process 103 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:46:04,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2022-03-03 17:46:05,055 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-03 17:46:05,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:46:05,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:46:05,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:46:05,451 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:46:05,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:46:05,930 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:46:05,931 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368771844] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:46:05,931 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:46:05,931 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 38 [2022-03-03 17:46:05,931 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552550427] [2022-03-03 17:46:05,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:46:05,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-03-03 17:46:05,931 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:46:05,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-03-03 17:46:05,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=1239, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 17:46:05,932 INFO L87 Difference]: Start difference. First operand 14375 states and 45694 transitions. Second operand has 38 states, 38 states have (on average 3.763157894736842) internal successors, (143), 38 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:08,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:46:08,674 INFO L93 Difference]: Finished difference Result 18660 states and 58002 transitions. [2022-03-03 17:46:08,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-03-03 17:46:08,674 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.763157894736842) internal successors, (143), 38 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:46:08,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:46:08,711 INFO L225 Difference]: With dead ends: 18660 [2022-03-03 17:46:08,711 INFO L226 Difference]: Without dead ends: 18558 [2022-03-03 17:46:08,712 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 125 SyntacticMatches, 3 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3863 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1306, Invalid=10684, Unknown=0, NotChecked=0, Total=11990 [2022-03-03 17:46:08,712 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 851 mSDsluCounter, 2928 mSDsCounter, 0 mSdLazyCounter, 1444 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 3007 SdHoareTripleChecker+Invalid, 1579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 1444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:46:08,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [851 Valid, 3007 Invalid, 1579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 1444 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:46:08,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18558 states. [2022-03-03 17:46:08,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18558 to 14971. [2022-03-03 17:46:08,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14971 states, 14970 states have (on average 3.1810955243820978) internal successors, (47621), 14970 states have internal predecessors, (47621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:09,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14971 states to 14971 states and 47621 transitions. [2022-03-03 17:46:09,021 INFO L78 Accepts]: Start accepts. Automaton has 14971 states and 47621 transitions. Word has length 74 [2022-03-03 17:46:09,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:46:09,021 INFO L470 AbstractCegarLoop]: Abstraction has 14971 states and 47621 transitions. [2022-03-03 17:46:09,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.763157894736842) internal successors, (143), 38 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:09,021 INFO L276 IsEmpty]: Start isEmpty. Operand 14971 states and 47621 transitions. [2022-03-03 17:46:09,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:46:09,046 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:46:09,046 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:46:09,066 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Forceful destruction successful, exit code 0 [2022-03-03 17:46:09,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable104 [2022-03-03 17:46:09,246 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:46:09,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:46:09,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1000290919, now seen corresponding path program 103 times [2022-03-03 17:46:09,247 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:46:09,247 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550030334] [2022-03-03 17:46:09,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:46:09,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:46:09,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:46:09,424 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:46:09,425 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:46:09,425 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550030334] [2022-03-03 17:46:09,425 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550030334] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:46:09,425 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190894576] [2022-03-03 17:46:09,425 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:46:09,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:46:09,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:46:09,426 INFO L229 MonitoredProcess]: Starting monitored process 104 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:46:09,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2022-03-03 17:46:09,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:46:09,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:46:09,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:46:09,930 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:46:09,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:46:10,440 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:46:10,440 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190894576] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:46:10,440 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:46:10,440 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-03-03 17:46:10,441 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85150723] [2022-03-03 17:46:10,441 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:46:10,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-03-03 17:46:10,441 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:46:10,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-03-03 17:46:10,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=1305, Unknown=0, NotChecked=0, Total=1482 [2022-03-03 17:46:10,441 INFO L87 Difference]: Start difference. First operand 14971 states and 47621 transitions. Second operand has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:14,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:46:14,063 INFO L93 Difference]: Finished difference Result 18544 states and 57775 transitions. [2022-03-03 17:46:14,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-03-03 17:46:14,063 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:46:14,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:46:14,104 INFO L225 Difference]: With dead ends: 18544 [2022-03-03 17:46:14,104 INFO L226 Difference]: Without dead ends: 18442 [2022-03-03 17:46:14,104 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 124 SyntacticMatches, 3 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3456 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1297, Invalid=9833, Unknown=0, NotChecked=0, Total=11130 [2022-03-03 17:46:14,105 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 760 mSDsluCounter, 2878 mSDsCounter, 0 mSdLazyCounter, 1504 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 2975 SdHoareTripleChecker+Invalid, 1639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 1504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:46:14,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [760 Valid, 2975 Invalid, 1639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 1504 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:46:14,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18442 states. [2022-03-03 17:46:14,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18442 to 14999. [2022-03-03 17:46:14,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14999 states, 14998 states have (on average 3.180557407654354) internal successors, (47702), 14998 states have internal predecessors, (47702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:14,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14999 states to 14999 states and 47702 transitions. [2022-03-03 17:46:14,439 INFO L78 Accepts]: Start accepts. Automaton has 14999 states and 47702 transitions. Word has length 74 [2022-03-03 17:46:14,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:46:14,439 INFO L470 AbstractCegarLoop]: Abstraction has 14999 states and 47702 transitions. [2022-03-03 17:46:14,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:14,439 INFO L276 IsEmpty]: Start isEmpty. Operand 14999 states and 47702 transitions. [2022-03-03 17:46:14,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:46:14,467 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:46:14,467 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:46:14,484 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Forceful destruction successful, exit code 0 [2022-03-03 17:46:14,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,104 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:46:14,667 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:46:14,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:46:14,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1644791681, now seen corresponding path program 104 times [2022-03-03 17:46:14,668 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:46:14,668 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488059322] [2022-03-03 17:46:14,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:46:14,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:46:14,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:46:14,857 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:46:14,857 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:46:14,857 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488059322] [2022-03-03 17:46:14,857 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488059322] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:46:14,857 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75435854] [2022-03-03 17:46:14,857 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:46:14,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:46:14,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:46:14,858 INFO L229 MonitoredProcess]: Starting monitored process 105 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:46:14,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2022-03-03 17:46:14,950 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:46:14,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:46:14,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:46:14,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:46:15,374 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:46:15,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:46:15,900 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:46:15,900 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [75435854] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:46:15,900 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:46:15,900 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-03-03 17:46:15,900 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597220702] [2022-03-03 17:46:15,900 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:46:15,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-03-03 17:46:15,900 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:46:15,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-03-03 17:46:15,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1296, Unknown=0, NotChecked=0, Total=1482 [2022-03-03 17:46:15,901 INFO L87 Difference]: Start difference. First operand 14999 states and 47702 transitions. Second operand has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:27,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:46:27,380 INFO L93 Difference]: Finished difference Result 25353 states and 76521 transitions. [2022-03-03 17:46:27,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 245 states. [2022-03-03 17:46:27,380 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:46:27,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:46:27,443 INFO L225 Difference]: With dead ends: 25353 [2022-03-03 17:46:27,443 INFO L226 Difference]: Without dead ends: 24804 [2022-03-03 17:46:27,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 124 SyntacticMatches, 3 SemanticMatches, 260 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27108 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=8356, Invalid=60026, Unknown=0, NotChecked=0, Total=68382 [2022-03-03 17:46:27,446 INFO L933 BasicCegarLoop]: 456 mSDtfsCounter, 1904 mSDsluCounter, 7607 mSDsCounter, 0 mSdLazyCounter, 3997 mSolverCounterSat, 368 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1904 SdHoareTripleChecker+Valid, 7567 SdHoareTripleChecker+Invalid, 4365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 368 IncrementalHoareTripleChecker+Valid, 3997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:46:27,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1904 Valid, 7567 Invalid, 4365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [368 Valid, 3997 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-03-03 17:46:27,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24804 states. [2022-03-03 17:46:27,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24804 to 15367. [2022-03-03 17:46:27,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15367 states, 15366 states have (on average 3.1837823766757776) internal successors, (48922), 15366 states have internal predecessors, (48922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:27,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15367 states to 15367 states and 48922 transitions. [2022-03-03 17:46:27,845 INFO L78 Accepts]: Start accepts. Automaton has 15367 states and 48922 transitions. Word has length 74 [2022-03-03 17:46:27,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:46:27,845 INFO L470 AbstractCegarLoop]: Abstraction has 15367 states and 48922 transitions. [2022-03-03 17:46:27,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:27,845 INFO L276 IsEmpty]: Start isEmpty. Operand 15367 states and 48922 transitions. [2022-03-03 17:46:27,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:46:27,873 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:46:27,873 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:46:27,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Forceful destruction successful, exit code 0 [2022-03-03 17:46:28,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106,105 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:46:28,074 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:46:28,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:46:28,074 INFO L85 PathProgramCache]: Analyzing trace with hash 377723573, now seen corresponding path program 105 times [2022-03-03 17:46:28,074 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:46:28,074 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303339396] [2022-03-03 17:46:28,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:46:28,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:46:28,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:46:28,262 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:46:28,263 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:46:28,263 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303339396] [2022-03-03 17:46:28,263 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303339396] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:46:28,263 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106298968] [2022-03-03 17:46:28,263 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:46:28,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:46:28,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:46:28,264 INFO L229 MonitoredProcess]: Starting monitored process 106 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:46:28,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2022-03-03 17:46:28,359 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 17:46:28,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:46:28,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:46:28,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:46:28,789 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:46:28,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:46:29,282 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:46:29,282 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106298968] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:46:29,282 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:46:29,282 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-03-03 17:46:29,282 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459226211] [2022-03-03 17:46:29,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:46:29,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-03-03 17:46:29,283 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:46:29,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-03-03 17:46:29,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1294, Unknown=0, NotChecked=0, Total=1482 [2022-03-03 17:46:29,283 INFO L87 Difference]: Start difference. First operand 15367 states and 48922 transitions. Second operand has 39 states, 39 states have (on average 3.6666666666666665) internal successors, (143), 39 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:33,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:46:33,284 INFO L93 Difference]: Finished difference Result 20342 states and 63039 transitions. [2022-03-03 17:46:33,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2022-03-03 17:46:33,284 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.6666666666666665) internal successors, (143), 39 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:46:33,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:46:33,331 INFO L225 Difference]: With dead ends: 20342 [2022-03-03 17:46:33,332 INFO L226 Difference]: Without dead ends: 19766 [2022-03-03 17:46:33,333 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 124 SyntacticMatches, 3 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6531 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=2589, Invalid=16871, Unknown=0, NotChecked=0, Total=19460 [2022-03-03 17:46:33,333 INFO L933 BasicCegarLoop]: 273 mSDtfsCounter, 1602 mSDsluCounter, 4388 mSDsCounter, 0 mSdLazyCounter, 2397 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1602 SdHoareTripleChecker+Valid, 4485 SdHoareTripleChecker+Invalid, 2614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 2397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-03 17:46:33,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1602 Valid, 4485 Invalid, 2614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 2397 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-03 17:46:33,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19766 states. [2022-03-03 17:46:33,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19766 to 16015. [2022-03-03 17:46:33,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16015 states, 16014 states have (on average 3.185462720119895) internal successors, (51012), 16014 states have internal predecessors, (51012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:33,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16015 states to 16015 states and 51012 transitions. [2022-03-03 17:46:33,703 INFO L78 Accepts]: Start accepts. Automaton has 16015 states and 51012 transitions. Word has length 74 [2022-03-03 17:46:33,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:46:33,703 INFO L470 AbstractCegarLoop]: Abstraction has 16015 states and 51012 transitions. [2022-03-03 17:46:33,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.6666666666666665) internal successors, (143), 39 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:33,703 INFO L276 IsEmpty]: Start isEmpty. Operand 16015 states and 51012 transitions. [2022-03-03 17:46:33,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:46:33,731 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:46:33,731 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:46:33,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Forceful destruction successful, exit code 0 [2022-03-03 17:46:33,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2022-03-03 17:46:33,932 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:46:33,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:46:33,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1042978437, now seen corresponding path program 106 times [2022-03-03 17:46:33,932 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:46:33,932 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935803435] [2022-03-03 17:46:33,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:46:33,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:46:33,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:46:34,147 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:46:34,147 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:46:34,148 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935803435] [2022-03-03 17:46:34,148 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935803435] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:46:34,148 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469937665] [2022-03-03 17:46:34,148 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:46:34,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:46:34,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:46:34,149 INFO L229 MonitoredProcess]: Starting monitored process 107 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:46:34,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2022-03-03 17:46:34,239 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:46:34,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:46:34,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:46:34,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:46:34,662 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:46:34,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:46:35,165 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:46:35,165 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1469937665] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:46:35,165 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:46:35,165 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-03-03 17:46:35,165 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763331932] [2022-03-03 17:46:35,165 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:46:35,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-03-03 17:46:35,166 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:46:35,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-03-03 17:46:35,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1314, Unknown=0, NotChecked=0, Total=1482 [2022-03-03 17:46:35,166 INFO L87 Difference]: Start difference. First operand 16015 states and 51012 transitions. Second operand has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:40,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:46:40,485 INFO L93 Difference]: Finished difference Result 23261 states and 71080 transitions. [2022-03-03 17:46:40,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2022-03-03 17:46:40,485 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:46:40,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:46:40,535 INFO L225 Difference]: With dead ends: 23261 [2022-03-03 17:46:40,535 INFO L226 Difference]: Without dead ends: 23057 [2022-03-03 17:46:40,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 124 SyntacticMatches, 3 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9195 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=2673, Invalid=23409, Unknown=0, NotChecked=0, Total=26082 [2022-03-03 17:46:40,538 INFO L933 BasicCegarLoop]: 314 mSDtfsCounter, 1240 mSDsluCounter, 5179 mSDsCounter, 0 mSdLazyCounter, 2765 mSolverCounterSat, 277 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1240 SdHoareTripleChecker+Valid, 5297 SdHoareTripleChecker+Invalid, 3042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 277 IncrementalHoareTripleChecker+Valid, 2765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:46:40,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1240 Valid, 5297 Invalid, 3042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [277 Valid, 2765 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-03 17:46:40,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23057 states. [2022-03-03 17:46:40,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23057 to 16183. [2022-03-03 17:46:40,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16183 states, 16182 states have (on average 3.1836608577431713) internal successors, (51518), 16182 states have internal predecessors, (51518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:40,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16183 states to 16183 states and 51518 transitions. [2022-03-03 17:46:40,951 INFO L78 Accepts]: Start accepts. Automaton has 16183 states and 51518 transitions. Word has length 74 [2022-03-03 17:46:40,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:46:40,951 INFO L470 AbstractCegarLoop]: Abstraction has 16183 states and 51518 transitions. [2022-03-03 17:46:40,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:40,951 INFO L276 IsEmpty]: Start isEmpty. Operand 16183 states and 51518 transitions. [2022-03-03 17:46:40,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:46:40,981 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:46:40,981 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:46:40,997 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Forceful destruction successful, exit code 0 [2022-03-03 17:46:41,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,107 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:46:41,182 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:46:41,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:46:41,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1710809265, now seen corresponding path program 107 times [2022-03-03 17:46:41,182 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:46:41,182 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377888053] [2022-03-03 17:46:41,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:46:41,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:46:41,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:46:41,452 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:46:41,452 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:46:41,452 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377888053] [2022-03-03 17:46:41,452 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377888053] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:46:41,452 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939203606] [2022-03-03 17:46:41,452 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:46:41,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:46:41,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:46:41,453 INFO L229 MonitoredProcess]: Starting monitored process 108 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:46:41,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2022-03-03 17:46:41,545 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-03 17:46:41,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:46:41,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:46:41,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:46:41,940 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:46:41,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:46:42,346 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:46:42,346 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1939203606] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:46:42,346 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:46:42,346 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 38 [2022-03-03 17:46:42,346 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365860189] [2022-03-03 17:46:42,346 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:46:42,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-03-03 17:46:42,347 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:46:42,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-03-03 17:46:42,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1240, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 17:46:42,347 INFO L87 Difference]: Start difference. First operand 16183 states and 51518 transitions. Second operand has 38 states, 38 states have (on average 3.736842105263158) internal successors, (142), 38 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:43,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:46:43,542 INFO L93 Difference]: Finished difference Result 19889 states and 62104 transitions. [2022-03-03 17:46:43,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-03 17:46:43,542 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.736842105263158) internal successors, (142), 38 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:46:43,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:46:43,591 INFO L225 Difference]: With dead ends: 19889 [2022-03-03 17:46:43,591 INFO L226 Difference]: Without dead ends: 19787 [2022-03-03 17:46:43,592 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 126 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1275 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=559, Invalid=4411, Unknown=0, NotChecked=0, Total=4970 [2022-03-03 17:46:43,592 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 526 mSDsluCounter, 2913 mSDsCounter, 0 mSdLazyCounter, 1208 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 2979 SdHoareTripleChecker+Invalid, 1280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:46:43,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [526 Valid, 2979 Invalid, 1280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1208 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:46:43,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19787 states. [2022-03-03 17:46:43,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19787 to 16183. [2022-03-03 17:46:43,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16183 states, 16182 states have (on average 3.1836608577431713) internal successors, (51518), 16182 states have internal predecessors, (51518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:43,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16183 states to 16183 states and 51518 transitions. [2022-03-03 17:46:43,962 INFO L78 Accepts]: Start accepts. Automaton has 16183 states and 51518 transitions. Word has length 74 [2022-03-03 17:46:43,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:46:43,962 INFO L470 AbstractCegarLoop]: Abstraction has 16183 states and 51518 transitions. [2022-03-03 17:46:43,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.736842105263158) internal successors, (142), 38 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:43,962 INFO L276 IsEmpty]: Start isEmpty. Operand 16183 states and 51518 transitions. [2022-03-03 17:46:43,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:46:43,987 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:46:43,988 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:46:44,005 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Forceful destruction successful, exit code 0 [2022-03-03 17:46:44,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,108 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:46:44,188 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:46:44,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:46:44,188 INFO L85 PathProgramCache]: Analyzing trace with hash 864727055, now seen corresponding path program 108 times [2022-03-03 17:46:44,188 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:46:44,188 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837655705] [2022-03-03 17:46:44,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:46:44,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:46:44,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:46:44,381 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:46:44,381 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:46:44,381 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837655705] [2022-03-03 17:46:44,381 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837655705] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:46:44,381 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439111814] [2022-03-03 17:46:44,381 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:46:44,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:46:44,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:46:44,382 INFO L229 MonitoredProcess]: Starting monitored process 109 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:46:44,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2022-03-03 17:46:44,486 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-03 17:46:44,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:46:44,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:46:44,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:46:44,889 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:46:44,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:46:45,352 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:46:45,353 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439111814] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:46:45,353 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:46:45,353 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 38 [2022-03-03 17:46:45,353 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639974054] [2022-03-03 17:46:45,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:46:45,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-03-03 17:46:45,353 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:46:45,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-03-03 17:46:45,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1242, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 17:46:45,354 INFO L87 Difference]: Start difference. First operand 16183 states and 51518 transitions. Second operand has 38 states, 38 states have (on average 3.763157894736842) internal successors, (143), 38 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:47,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:46:47,838 INFO L93 Difference]: Finished difference Result 20048 states and 62492 transitions. [2022-03-03 17:46:47,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-03-03 17:46:47,838 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.763157894736842) internal successors, (143), 38 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:46:47,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:46:47,883 INFO L225 Difference]: With dead ends: 20048 [2022-03-03 17:46:47,883 INFO L226 Difference]: Without dead ends: 19946 [2022-03-03 17:46:47,884 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 126 SyntacticMatches, 2 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2981 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1075, Invalid=8825, Unknown=0, NotChecked=0, Total=9900 [2022-03-03 17:46:47,884 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 788 mSDsluCounter, 3443 mSDsCounter, 0 mSdLazyCounter, 1720 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 788 SdHoareTripleChecker+Valid, 3483 SdHoareTripleChecker+Invalid, 1821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:46:47,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [788 Valid, 3483 Invalid, 1821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1720 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:46:47,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19946 states. [2022-03-03 17:46:48,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19946 to 16427. [2022-03-03 17:46:48,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16427 states, 16426 states have (on average 3.1842810178984537) internal successors, (52305), 16426 states have internal predecessors, (52305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:48,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16427 states to 16427 states and 52305 transitions. [2022-03-03 17:46:48,262 INFO L78 Accepts]: Start accepts. Automaton has 16427 states and 52305 transitions. Word has length 74 [2022-03-03 17:46:48,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:46:48,262 INFO L470 AbstractCegarLoop]: Abstraction has 16427 states and 52305 transitions. [2022-03-03 17:46:48,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.763157894736842) internal successors, (143), 38 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:48,262 INFO L276 IsEmpty]: Start isEmpty. Operand 16427 states and 52305 transitions. [2022-03-03 17:46:48,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:46:48,289 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:46:48,289 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:46:48,305 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Forceful destruction successful, exit code 0 [2022-03-03 17:46:48,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,109 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:46:48,489 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:46:48,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:46:48,490 INFO L85 PathProgramCache]: Analyzing trace with hash 885444441, now seen corresponding path program 109 times [2022-03-03 17:46:48,490 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:46:48,490 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804191182] [2022-03-03 17:46:48,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:46:48,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:46:48,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:46:48,674 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:46:48,674 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:46:48,674 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804191182] [2022-03-03 17:46:48,674 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804191182] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:46:48,674 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262221579] [2022-03-03 17:46:48,674 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:46:48,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:46:48,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:46:48,676 INFO L229 MonitoredProcess]: Starting monitored process 110 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:46:48,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Waiting until timeout for monitored process [2022-03-03 17:46:48,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:46:48,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:46:48,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:46:49,178 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:46:49,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:46:49,662 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:46:49,663 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262221579] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:46:49,663 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:46:49,663 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-03-03 17:46:49,663 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681619978] [2022-03-03 17:46:49,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:46:49,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-03-03 17:46:49,663 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:46:49,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-03-03 17:46:49,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1307, Unknown=0, NotChecked=0, Total=1482 [2022-03-03 17:46:49,664 INFO L87 Difference]: Start difference. First operand 16427 states and 52305 transitions. Second operand has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:51,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:46:51,787 INFO L93 Difference]: Finished difference Result 19908 states and 62095 transitions. [2022-03-03 17:46:51,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-03-03 17:46:51,787 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:46:51,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:46:51,835 INFO L225 Difference]: With dead ends: 19908 [2022-03-03 17:46:51,835 INFO L226 Difference]: Without dead ends: 19806 [2022-03-03 17:46:51,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 125 SyntacticMatches, 2 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1939 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=858, Invalid=6282, Unknown=0, NotChecked=0, Total=7140 [2022-03-03 17:46:51,836 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 781 mSDsluCounter, 2910 mSDsCounter, 0 mSdLazyCounter, 1478 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 2984 SdHoareTripleChecker+Invalid, 1600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 1478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:46:51,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [781 Valid, 2984 Invalid, 1600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 1478 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:46:51,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19806 states. [2022-03-03 17:46:52,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19806 to 16483. [2022-03-03 17:46:52,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16483 states, 16482 states have (on average 3.1845043077296444) internal successors, (52487), 16482 states have internal predecessors, (52487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:52,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16483 states to 16483 states and 52487 transitions. [2022-03-03 17:46:52,233 INFO L78 Accepts]: Start accepts. Automaton has 16483 states and 52487 transitions. Word has length 74 [2022-03-03 17:46:52,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:46:52,233 INFO L470 AbstractCegarLoop]: Abstraction has 16483 states and 52487 transitions. [2022-03-03 17:46:52,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:52,234 INFO L276 IsEmpty]: Start isEmpty. Operand 16483 states and 52487 transitions. [2022-03-03 17:46:52,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:46:52,264 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:46:52,264 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:46:52,285 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Forceful destruction successful, exit code 0 [2022-03-03 17:46:52,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2022-03-03 17:46:52,464 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:46:52,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:46:52,465 INFO L85 PathProgramCache]: Analyzing trace with hash 240943679, now seen corresponding path program 110 times [2022-03-03 17:46:52,465 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:46:52,465 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174011167] [2022-03-03 17:46:52,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:46:52,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:46:52,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:46:52,658 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:46:52,658 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:46:52,658 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174011167] [2022-03-03 17:46:52,658 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174011167] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:46:52,658 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094262582] [2022-03-03 17:46:52,658 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:46:52,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:46:52,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:46:52,660 INFO L229 MonitoredProcess]: Starting monitored process 111 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:46:52,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2022-03-03 17:46:52,755 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:46:52,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:46:52,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:46:52,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:46:53,178 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:46:53,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:46:53,740 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:46:53,740 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094262582] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:46:53,740 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:46:53,740 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-03-03 17:46:53,740 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300242202] [2022-03-03 17:46:53,740 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:46:53,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-03-03 17:46:53,740 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:46:53,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-03-03 17:46:53,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1294, Unknown=0, NotChecked=0, Total=1482 [2022-03-03 17:46:53,741 INFO L87 Difference]: Start difference. First operand 16483 states and 52487 transitions. Second operand has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:47:00,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:47:00,700 INFO L93 Difference]: Finished difference Result 23799 states and 72791 transitions. [2022-03-03 17:47:00,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2022-03-03 17:47:00,700 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:47:00,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:47:00,758 INFO L225 Difference]: With dead ends: 23799 [2022-03-03 17:47:00,758 INFO L226 Difference]: Without dead ends: 23313 [2022-03-03 17:47:00,761 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 124 SyntacticMatches, 3 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11249 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=4019, Invalid=27487, Unknown=0, NotChecked=0, Total=31506 [2022-03-03 17:47:00,762 INFO L933 BasicCegarLoop]: 317 mSDtfsCounter, 1662 mSDsluCounter, 5729 mSDsCounter, 0 mSdLazyCounter, 2994 mSolverCounterSat, 273 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1662 SdHoareTripleChecker+Valid, 5740 SdHoareTripleChecker+Invalid, 3267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 273 IncrementalHoareTripleChecker+Valid, 2994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:47:00,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1662 Valid, 5740 Invalid, 3267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [273 Valid, 2994 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-03 17:47:00,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23313 states. [2022-03-03 17:47:01,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23313 to 16591. [2022-03-03 17:47:01,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16591 states, 16590 states have (on average 3.182640144665461) internal successors, (52800), 16590 states have internal predecessors, (52800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:47:01,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16591 states to 16591 states and 52800 transitions. [2022-03-03 17:47:01,293 INFO L78 Accepts]: Start accepts. Automaton has 16591 states and 52800 transitions. Word has length 74 [2022-03-03 17:47:01,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:47:01,293 INFO L470 AbstractCegarLoop]: Abstraction has 16591 states and 52800 transitions. [2022-03-03 17:47:01,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:47:01,293 INFO L276 IsEmpty]: Start isEmpty. Operand 16591 states and 52800 transitions. [2022-03-03 17:47:01,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:47:01,324 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:47:01,324 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:47:01,341 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Forceful destruction successful, exit code 0 [2022-03-03 17:47:01,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 111 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2022-03-03 17:47:01,524 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:47:01,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:47:01,525 INFO L85 PathProgramCache]: Analyzing trace with hash -945326863, now seen corresponding path program 111 times [2022-03-03 17:47:01,525 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:47:01,525 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606762327] [2022-03-03 17:47:01,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:47:01,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:47:01,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:47:01,723 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:47:01,723 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:47:01,723 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606762327] [2022-03-03 17:47:01,723 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606762327] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:47:01,723 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741735043] [2022-03-03 17:47:01,723 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:47:01,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:47:01,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:47:01,724 INFO L229 MonitoredProcess]: Starting monitored process 112 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:47:01,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process [2022-03-03 17:47:01,822 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 17:47:01,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:47:01,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:47:01,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:47:02,253 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:47:02,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:47:02,978 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:47:02,978 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741735043] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:47:02,978 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:47:02,978 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-03-03 17:47:02,979 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625896143] [2022-03-03 17:47:02,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:47:02,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-03-03 17:47:02,979 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:47:02,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-03-03 17:47:02,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1333, Unknown=0, NotChecked=0, Total=1482 [2022-03-03 17:47:02,979 INFO L87 Difference]: Start difference. First operand 16591 states and 52800 transitions. Second operand has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:47:07,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:47:07,531 INFO L93 Difference]: Finished difference Result 21275 states and 66063 transitions. [2022-03-03 17:47:07,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-03-03 17:47:07,532 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:47:07,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:47:07,578 INFO L225 Difference]: With dead ends: 21275 [2022-03-03 17:47:07,579 INFO L226 Difference]: Without dead ends: 21122 [2022-03-03 17:47:07,579 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 124 SyntacticMatches, 3 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3704 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1193, Invalid=11017, Unknown=0, NotChecked=0, Total=12210 [2022-03-03 17:47:07,579 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 711 mSDsluCounter, 4506 mSDsCounter, 0 mSdLazyCounter, 2317 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 4538 SdHoareTripleChecker+Invalid, 2443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 2317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-03 17:47:07,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [711 Valid, 4538 Invalid, 2443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 2317 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-03 17:47:07,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21122 states. [2022-03-03 17:47:07,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21122 to 16795. [2022-03-03 17:47:07,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16795 states, 16794 states have (on average 3.179528403001072) internal successors, (53397), 16794 states have internal predecessors, (53397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:47:07,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16795 states to 16795 states and 53397 transitions. [2022-03-03 17:47:07,962 INFO L78 Accepts]: Start accepts. Automaton has 16795 states and 53397 transitions. Word has length 74 [2022-03-03 17:47:07,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:47:07,962 INFO L470 AbstractCegarLoop]: Abstraction has 16795 states and 53397 transitions. [2022-03-03 17:47:07,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:47:07,962 INFO L276 IsEmpty]: Start isEmpty. Operand 16795 states and 53397 transitions. [2022-03-03 17:47:07,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:47:07,992 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:47:07,993 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:47:08,009 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Forceful destruction successful, exit code 0 [2022-03-03 17:47:08,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2022-03-03 17:47:08,193 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:47:08,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:47:08,193 INFO L85 PathProgramCache]: Analyzing trace with hash 842756923, now seen corresponding path program 112 times [2022-03-03 17:47:08,193 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:47:08,193 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116881561] [2022-03-03 17:47:08,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:47:08,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:47:08,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:47:08,382 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:47:08,382 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:47:08,382 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116881561] [2022-03-03 17:47:08,382 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116881561] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:47:08,382 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966526965] [2022-03-03 17:47:08,382 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:47:08,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:47:08,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:47:08,383 INFO L229 MonitoredProcess]: Starting monitored process 113 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:47:08,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Waiting until timeout for monitored process [2022-03-03 17:47:08,477 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:47:08,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:47:08,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:47:08,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:47:08,905 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:47:08,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:47:09,435 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:47:09,436 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966526965] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:47:09,436 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:47:09,436 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-03-03 17:47:09,436 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790176405] [2022-03-03 17:47:09,436 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:47:09,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-03-03 17:47:09,436 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:47:09,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-03-03 17:47:09,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1313, Unknown=0, NotChecked=0, Total=1482 [2022-03-03 17:47:09,437 INFO L87 Difference]: Start difference. First operand 16795 states and 53397 transitions. Second operand has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:47:13,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:47:13,447 INFO L93 Difference]: Finished difference Result 23194 states and 71190 transitions. [2022-03-03 17:47:13,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-03-03 17:47:13,448 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:47:13,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:47:13,506 INFO L225 Difference]: With dead ends: 23194 [2022-03-03 17:47:13,506 INFO L226 Difference]: Without dead ends: 22990 [2022-03-03 17:47:13,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 124 SyntacticMatches, 3 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5021 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1833, Invalid=14169, Unknown=0, NotChecked=0, Total=16002 [2022-03-03 17:47:13,507 INFO L933 BasicCegarLoop]: 277 mSDtfsCounter, 938 mSDsluCounter, 4745 mSDsCounter, 0 mSdLazyCounter, 2313 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 938 SdHoareTripleChecker+Valid, 4823 SdHoareTripleChecker+Invalid, 2508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 2313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-03 17:47:13,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [938 Valid, 4823 Invalid, 2508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 2313 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-03 17:47:13,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22990 states. [2022-03-03 17:47:13,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22990 to 16803. [2022-03-03 17:47:13,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16803 states, 16802 states have (on average 3.179561956909892) internal successors, (53423), 16802 states have internal predecessors, (53423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:47:13,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16803 states to 16803 states and 53423 transitions. [2022-03-03 17:47:13,942 INFO L78 Accepts]: Start accepts. Automaton has 16803 states and 53423 transitions. Word has length 74 [2022-03-03 17:47:13,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:47:13,942 INFO L470 AbstractCegarLoop]: Abstraction has 16803 states and 53423 transitions. [2022-03-03 17:47:13,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:47:13,942 INFO L276 IsEmpty]: Start isEmpty. Operand 16803 states and 53423 transitions. [2022-03-03 17:47:13,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:47:13,971 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:47:13,972 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:47:13,990 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Forceful destruction successful, exit code 0 [2022-03-03 17:47:14,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2022-03-03 17:47:14,183 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:47:14,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:47:14,184 INFO L85 PathProgramCache]: Analyzing trace with hash 174926095, now seen corresponding path program 113 times [2022-03-03 17:47:14,184 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:47:14,184 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074091528] [2022-03-03 17:47:14,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:47:14,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:47:14,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:47:14,361 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:47:14,361 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:47:14,361 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074091528] [2022-03-03 17:47:14,361 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074091528] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:47:14,361 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767027351] [2022-03-03 17:47:14,361 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:47:14,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:47:14,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:47:14,362 INFO L229 MonitoredProcess]: Starting monitored process 114 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:47:14,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Waiting until timeout for monitored process [2022-03-03 17:47:14,460 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-03 17:47:14,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:47:14,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:47:14,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:47:14,861 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:47:14,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:47:15,333 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:47:15,333 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767027351] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:47:15,334 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:47:15,334 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 38 [2022-03-03 17:47:15,334 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427204308] [2022-03-03 17:47:15,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:47:15,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-03-03 17:47:15,334 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:47:15,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-03-03 17:47:15,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1244, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 17:47:15,334 INFO L87 Difference]: Start difference. First operand 16803 states and 53423 transitions. Second operand has 38 states, 38 states have (on average 3.736842105263158) internal successors, (142), 38 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:47:16,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:47:16,789 INFO L93 Difference]: Finished difference Result 20797 states and 64793 transitions. [2022-03-03 17:47:16,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-03-03 17:47:16,789 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.736842105263158) internal successors, (142), 38 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:47:16,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:47:16,833 INFO L225 Difference]: With dead ends: 20797 [2022-03-03 17:47:16,833 INFO L226 Difference]: Without dead ends: 20695 [2022-03-03 17:47:16,833 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 125 SyntacticMatches, 3 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1512 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=655, Invalid=5045, Unknown=0, NotChecked=0, Total=5700 [2022-03-03 17:47:16,834 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 583 mSDsluCounter, 2697 mSDsCounter, 0 mSdLazyCounter, 1078 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 2770 SdHoareTripleChecker+Invalid, 1164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1078 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:47:16,834 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [583 Valid, 2770 Invalid, 1164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1078 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:47:16,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20695 states. [2022-03-03 17:47:17,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20695 to 16803. [2022-03-03 17:47:17,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16803 states, 16802 states have (on average 3.179561956909892) internal successors, (53423), 16802 states have internal predecessors, (53423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:47:17,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16803 states to 16803 states and 53423 transitions. [2022-03-03 17:47:17,194 INFO L78 Accepts]: Start accepts. Automaton has 16803 states and 53423 transitions. Word has length 74 [2022-03-03 17:47:17,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:47:17,194 INFO L470 AbstractCegarLoop]: Abstraction has 16803 states and 53423 transitions. [2022-03-03 17:47:17,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.736842105263158) internal successors, (142), 38 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:47:17,194 INFO L276 IsEmpty]: Start isEmpty. Operand 16803 states and 53423 transitions. [2022-03-03 17:47:17,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:47:17,222 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:47:17,222 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:47:17,239 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Forceful destruction successful, exit code 0 [2022-03-03 17:47:17,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115,114 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:47:17,424 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:47:17,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:47:17,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1118278021, now seen corresponding path program 114 times [2022-03-03 17:47:17,424 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:47:17,424 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425851915] [2022-03-03 17:47:17,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:47:17,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:47:17,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:47:17,606 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:47:17,606 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:47:17,606 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425851915] [2022-03-03 17:47:17,606 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425851915] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:47:17,606 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771192585] [2022-03-03 17:47:17,606 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:47:17,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:47:17,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:47:17,628 INFO L229 MonitoredProcess]: Starting monitored process 115 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:47:17,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Waiting until timeout for monitored process [2022-03-03 17:47:17,726 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-03 17:47:17,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:47:17,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:47:17,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:47:18,168 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:47:18,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:47:18,656 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:47:18,657 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771192585] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:47:18,657 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:47:18,657 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-03-03 17:47:18,657 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632763913] [2022-03-03 17:47:18,657 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:47:18,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-03-03 17:47:18,657 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:47:18,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-03-03 17:47:18,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=1364, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 17:47:18,658 INFO L87 Difference]: Start difference. First operand 16803 states and 53423 transitions. Second operand has 40 states, 40 states have (on average 3.6) internal successors, (144), 40 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:47:22,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:47:22,127 INFO L93 Difference]: Finished difference Result 19913 states and 61879 transitions. [2022-03-03 17:47:22,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-03-03 17:47:22,127 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.6) internal successors, (144), 40 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:47:22,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:47:22,172 INFO L225 Difference]: With dead ends: 19913 [2022-03-03 17:47:22,173 INFO L226 Difference]: Without dead ends: 19448 [2022-03-03 17:47:22,174 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 123 SyntacticMatches, 3 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4558 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1968, Invalid=12312, Unknown=0, NotChecked=0, Total=14280 [2022-03-03 17:47:22,174 INFO L933 BasicCegarLoop]: 320 mSDtfsCounter, 1167 mSDsluCounter, 5356 mSDsCounter, 0 mSdLazyCounter, 2620 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1167 SdHoareTripleChecker+Valid, 5358 SdHoareTripleChecker+Invalid, 2797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 2620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-03 17:47:22,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1167 Valid, 5358 Invalid, 2797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 2620 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-03 17:47:22,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19448 states. [2022-03-03 17:47:22,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19448 to 16971. [2022-03-03 17:47:22,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16971 states, 16970 states have (on average 3.1781378903948143) internal successors, (53933), 16970 states have internal predecessors, (53933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:47:22,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16971 states to 16971 states and 53933 transitions. [2022-03-03 17:47:22,523 INFO L78 Accepts]: Start accepts. Automaton has 16971 states and 53933 transitions. Word has length 74 [2022-03-03 17:47:22,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:47:22,523 INFO L470 AbstractCegarLoop]: Abstraction has 16971 states and 53933 transitions. [2022-03-03 17:47:22,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.6) internal successors, (144), 40 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:47:22,523 INFO L276 IsEmpty]: Start isEmpty. Operand 16971 states and 53933 transitions. [2022-03-03 17:47:22,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:47:22,554 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:47:22,554 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:47:22,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Forceful destruction successful, exit code 0 [2022-03-03 17:47:22,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116,115 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:47:22,754 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:47:22,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:47:22,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1496515595, now seen corresponding path program 115 times [2022-03-03 17:47:22,755 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:47:22,755 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900637024] [2022-03-03 17:47:22,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:47:22,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:47:22,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:47:22,929 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:47:22,929 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:47:22,930 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900637024] [2022-03-03 17:47:22,930 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900637024] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:47:22,930 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056700000] [2022-03-03 17:47:22,930 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:47:22,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:47:22,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:47:22,931 INFO L229 MonitoredProcess]: Starting monitored process 116 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:47:22,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Waiting until timeout for monitored process [2022-03-03 17:47:23,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:47:23,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:47:23,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:47:23,460 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:47:23,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:47:23,960 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:47:23,960 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056700000] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:47:23,960 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:47:23,960 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-03-03 17:47:23,960 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607241148] [2022-03-03 17:47:23,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:47:23,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-03-03 17:47:23,961 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:47:23,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-03-03 17:47:23,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=1377, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 17:47:23,961 INFO L87 Difference]: Start difference. First operand 16971 states and 53933 transitions. Second operand has 40 states, 40 states have (on average 3.65) internal successors, (146), 40 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:47:26,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:47:26,698 INFO L93 Difference]: Finished difference Result 19675 states and 61297 transitions. [2022-03-03 17:47:26,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-03-03 17:47:26,698 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.65) internal successors, (146), 40 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:47:26,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:47:26,745 INFO L225 Difference]: With dead ends: 19675 [2022-03-03 17:47:26,745 INFO L226 Difference]: Without dead ends: 19522 [2022-03-03 17:47:26,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 123 SyntacticMatches, 3 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2985 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1177, Invalid=8723, Unknown=0, NotChecked=0, Total=9900 [2022-03-03 17:47:26,746 INFO L933 BasicCegarLoop]: 262 mSDtfsCounter, 994 mSDsluCounter, 4881 mSDsCounter, 0 mSdLazyCounter, 2332 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 994 SdHoareTripleChecker+Valid, 4920 SdHoareTripleChecker+Invalid, 2468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 2332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 17:47:26,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [994 Valid, 4920 Invalid, 2468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 2332 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-03 17:47:26,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19522 states. [2022-03-03 17:47:27,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19522 to 16955. [2022-03-03 17:47:27,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16955 states, 16954 states have (on average 3.177598206912823) internal successors, (53873), 16954 states have internal predecessors, (53873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:47:27,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16955 states to 16955 states and 53873 transitions. [2022-03-03 17:47:27,102 INFO L78 Accepts]: Start accepts. Automaton has 16955 states and 53873 transitions. Word has length 74 [2022-03-03 17:47:27,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:47:27,103 INFO L470 AbstractCegarLoop]: Abstraction has 16955 states and 53873 transitions. [2022-03-03 17:47:27,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.65) internal successors, (146), 40 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:47:27,103 INFO L276 IsEmpty]: Start isEmpty. Operand 16955 states and 53873 transitions. [2022-03-03 17:47:27,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:47:27,134 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:47:27,134 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:47:27,150 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Ended with exit code 0 [2022-03-03 17:47:27,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable117 [2022-03-03 17:47:27,334 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:47:27,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:47:27,334 INFO L85 PathProgramCache]: Analyzing trace with hash 980956341, now seen corresponding path program 116 times [2022-03-03 17:47:27,334 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:47:27,335 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613902873] [2022-03-03 17:47:27,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:47:27,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:47:27,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:47:27,505 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:47:27,505 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:47:27,505 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613902873] [2022-03-03 17:47:27,505 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613902873] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:47:27,506 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487354926] [2022-03-03 17:47:27,506 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:47:27,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:47:27,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:47:27,507 INFO L229 MonitoredProcess]: Starting monitored process 117 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:47:27,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Waiting until timeout for monitored process [2022-03-03 17:47:27,605 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:47:27,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:47:27,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:47:27,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:47:28,014 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:47:28,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:47:28,460 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:47:28,460 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487354926] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:47:28,460 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:47:28,460 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-03-03 17:47:28,460 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251912048] [2022-03-03 17:47:28,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:47:28,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-03-03 17:47:28,460 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:47:28,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-03-03 17:47:28,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1307, Unknown=0, NotChecked=0, Total=1482 [2022-03-03 17:47:28,461 INFO L87 Difference]: Start difference. First operand 16955 states and 53873 transitions. Second operand has 39 states, 39 states have (on average 3.6666666666666665) internal successors, (143), 39 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:47:29,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:47:29,529 INFO L93 Difference]: Finished difference Result 20018 states and 62613 transitions. [2022-03-03 17:47:29,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-03 17:47:29,529 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.6666666666666665) internal successors, (143), 39 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:47:29,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:47:29,575 INFO L225 Difference]: With dead ends: 20018 [2022-03-03 17:47:29,575 INFO L226 Difference]: Without dead ends: 19712 [2022-03-03 17:47:29,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 124 SyntacticMatches, 3 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1115 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=524, Invalid=3898, Unknown=0, NotChecked=0, Total=4422 [2022-03-03 17:47:29,576 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 620 mSDsluCounter, 2750 mSDsCounter, 0 mSdLazyCounter, 1035 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 620 SdHoareTripleChecker+Valid, 2804 SdHoareTripleChecker+Invalid, 1110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:47:29,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [620 Valid, 2804 Invalid, 1110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1035 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:47:29,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19712 states. [2022-03-03 17:47:29,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19712 to 16955. [2022-03-03 17:47:29,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16955 states, 16954 states have (on average 3.1773622743895245) internal successors, (53869), 16954 states have internal predecessors, (53869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:47:30,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16955 states to 16955 states and 53869 transitions. [2022-03-03 17:47:30,017 INFO L78 Accepts]: Start accepts. Automaton has 16955 states and 53869 transitions. Word has length 74 [2022-03-03 17:47:30,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:47:30,017 INFO L470 AbstractCegarLoop]: Abstraction has 16955 states and 53869 transitions. [2022-03-03 17:47:30,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.6666666666666665) internal successors, (143), 39 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:47:30,017 INFO L276 IsEmpty]: Start isEmpty. Operand 16955 states and 53869 transitions. [2022-03-03 17:47:30,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:47:30,047 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:47:30,047 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:47:30,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Forceful destruction successful, exit code 0 [2022-03-03 17:47:30,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118,117 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:47:30,247 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:47:30,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:47:30,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1763425597, now seen corresponding path program 117 times [2022-03-03 17:47:30,248 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:47:30,248 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381417435] [2022-03-03 17:47:30,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:47:30,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:47:30,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:47:30,424 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:47:30,425 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:47:30,425 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381417435] [2022-03-03 17:47:30,425 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381417435] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:47:30,425 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112069974] [2022-03-03 17:47:30,425 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:47:30,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:47:30,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:47:30,426 INFO L229 MonitoredProcess]: Starting monitored process 118 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:47:30,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Waiting until timeout for monitored process [2022-03-03 17:47:30,525 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 17:47:30,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:47:30,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:47:30,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:47:30,919 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:47:30,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:47:31,453 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:47:31,453 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112069974] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:47:31,453 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:47:31,453 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 38 [2022-03-03 17:47:31,453 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817632179] [2022-03-03 17:47:31,453 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:47:31,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-03-03 17:47:31,453 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:47:31,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-03-03 17:47:31,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1240, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 17:47:31,454 INFO L87 Difference]: Start difference. First operand 16955 states and 53869 transitions. Second operand has 38 states, 38 states have (on average 3.763157894736842) internal successors, (143), 38 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:47:34,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:47:34,095 INFO L93 Difference]: Finished difference Result 20352 states and 63572 transitions. [2022-03-03 17:47:34,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-03-03 17:47:34,095 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.763157894736842) internal successors, (143), 38 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:47:34,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:47:34,144 INFO L225 Difference]: With dead ends: 20352 [2022-03-03 17:47:34,144 INFO L226 Difference]: Without dead ends: 20250 [2022-03-03 17:47:34,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 125 SyntacticMatches, 3 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2768 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1037, Invalid=8469, Unknown=0, NotChecked=0, Total=9506 [2022-03-03 17:47:34,145 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 667 mSDsluCounter, 3293 mSDsCounter, 0 mSdLazyCounter, 1689 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 667 SdHoareTripleChecker+Valid, 3335 SdHoareTripleChecker+Invalid, 1787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:47:34,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [667 Valid, 3335 Invalid, 1787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1689 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:47:34,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20250 states. [2022-03-03 17:47:34,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20250 to 17139. [2022-03-03 17:47:34,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17139 states, 17138 states have (on average 3.1795425370521646) internal successors, (54491), 17138 states have internal predecessors, (54491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:47:34,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17139 states to 17139 states and 54491 transitions. [2022-03-03 17:47:34,605 INFO L78 Accepts]: Start accepts. Automaton has 17139 states and 54491 transitions. Word has length 74 [2022-03-03 17:47:34,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:47:34,605 INFO L470 AbstractCegarLoop]: Abstraction has 17139 states and 54491 transitions. [2022-03-03 17:47:34,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.763157894736842) internal successors, (143), 38 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:47:34,605 INFO L276 IsEmpty]: Start isEmpty. Operand 17139 states and 54491 transitions. [2022-03-03 17:47:34,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:47:34,636 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:47:34,636 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:47:34,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Forceful destruction successful, exit code 0 [2022-03-03 17:47:34,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,118 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:47:34,836 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:47:34,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:47:34,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1784142983, now seen corresponding path program 118 times [2022-03-03 17:47:34,837 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:47:34,837 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927384465] [2022-03-03 17:47:34,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:47:34,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:47:34,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:47:35,018 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:47:35,018 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:47:35,018 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927384465] [2022-03-03 17:47:35,018 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927384465] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:47:35,018 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168168795] [2022-03-03 17:47:35,018 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:47:35,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:47:35,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:47:35,020 INFO L229 MonitoredProcess]: Starting monitored process 119 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:47:35,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Waiting until timeout for monitored process [2022-03-03 17:47:35,116 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:47:35,116 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:47:35,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:47:35,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:47:35,529 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:47:35,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:47:36,098 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:47:36,099 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168168795] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:47:36,099 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:47:36,099 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-03-03 17:47:36,099 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27174928] [2022-03-03 17:47:36,099 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:47:36,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-03-03 17:47:36,099 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:47:36,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-03-03 17:47:36,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1303, Unknown=0, NotChecked=0, Total=1482 [2022-03-03 17:47:36,100 INFO L87 Difference]: Start difference. First operand 17139 states and 54491 transitions. Second operand has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:47:38,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:47:38,656 INFO L93 Difference]: Finished difference Result 20340 states and 63543 transitions. [2022-03-03 17:47:38,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-03-03 17:47:38,657 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:47:38,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:47:38,705 INFO L225 Difference]: With dead ends: 20340 [2022-03-03 17:47:38,705 INFO L226 Difference]: Without dead ends: 20238 [2022-03-03 17:47:38,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 124 SyntacticMatches, 3 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2060 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=910, Invalid=6746, Unknown=0, NotChecked=0, Total=7656 [2022-03-03 17:47:38,706 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 699 mSDsluCounter, 3358 mSDsCounter, 0 mSdLazyCounter, 1596 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 699 SdHoareTripleChecker+Valid, 3418 SdHoareTripleChecker+Invalid, 1712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:47:38,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [699 Valid, 3418 Invalid, 1712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1596 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:47:38,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20238 states. [2022-03-03 17:47:39,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20238 to 17191. [2022-03-03 17:47:39,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17191 states, 17190 states have (on average 3.1803374054682956) internal successors, (54670), 17190 states have internal predecessors, (54670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:47:39,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17191 states to 17191 states and 54670 transitions. [2022-03-03 17:47:39,168 INFO L78 Accepts]: Start accepts. Automaton has 17191 states and 54670 transitions. Word has length 74 [2022-03-03 17:47:39,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:47:39,168 INFO L470 AbstractCegarLoop]: Abstraction has 17191 states and 54670 transitions. [2022-03-03 17:47:39,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:47:39,168 INFO L276 IsEmpty]: Start isEmpty. Operand 17191 states and 54670 transitions. [2022-03-03 17:47:39,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:47:39,199 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:47:39,199 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:47:39,216 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Ended with exit code 0 [2022-03-03 17:47:39,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,119 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:47:39,400 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:47:39,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:47:39,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1139642221, now seen corresponding path program 119 times [2022-03-03 17:47:39,401 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:47:39,401 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132480917] [2022-03-03 17:47:39,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:47:39,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:47:39,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:47:39,603 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:47:39,603 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:47:39,603 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132480917] [2022-03-03 17:47:39,603 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132480917] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:47:39,603 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225960242] [2022-03-03 17:47:39,603 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:47:39,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:47:39,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:47:39,605 INFO L229 MonitoredProcess]: Starting monitored process 120 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:47:39,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Waiting until timeout for monitored process [2022-03-03 17:47:39,706 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-03 17:47:39,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:47:39,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:47:39,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:47:40,121 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:47:40,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:47:40,652 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:47:40,653 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225960242] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:47:40,653 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:47:40,653 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-03-03 17:47:40,653 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044708978] [2022-03-03 17:47:40,653 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:47:40,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-03-03 17:47:40,653 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:47:40,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-03-03 17:47:40,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=1287, Unknown=0, NotChecked=0, Total=1482 [2022-03-03 17:47:40,654 INFO L87 Difference]: Start difference. First operand 17191 states and 54670 transitions. Second operand has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:47:47,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:47:47,225 INFO L93 Difference]: Finished difference Result 24383 states and 74847 transitions. [2022-03-03 17:47:47,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2022-03-03 17:47:47,225 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:47:47,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:47:47,284 INFO L225 Difference]: With dead ends: 24383 [2022-03-03 17:47:47,284 INFO L226 Difference]: Without dead ends: 23903 [2022-03-03 17:47:47,286 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 125 SyntacticMatches, 2 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9958 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=3705, Invalid=24351, Unknown=0, NotChecked=0, Total=28056 [2022-03-03 17:47:47,286 INFO L933 BasicCegarLoop]: 275 mSDtfsCounter, 1636 mSDsluCounter, 4949 mSDsCounter, 0 mSdLazyCounter, 2478 mSolverCounterSat, 281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1636 SdHoareTripleChecker+Valid, 4939 SdHoareTripleChecker+Invalid, 2759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 281 IncrementalHoareTripleChecker+Valid, 2478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:47:47,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1636 Valid, 4939 Invalid, 2759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [281 Valid, 2478 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-03 17:47:47,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23903 states. [2022-03-03 17:47:47,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23903 to 16775. [2022-03-03 17:47:47,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16775 states, 16774 states have (on average 3.1869560033385) internal successors, (53458), 16774 states have internal predecessors, (53458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:47:47,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16775 states to 16775 states and 53458 transitions. [2022-03-03 17:47:47,707 INFO L78 Accepts]: Start accepts. Automaton has 16775 states and 53458 transitions. Word has length 74 [2022-03-03 17:47:47,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:47:47,707 INFO L470 AbstractCegarLoop]: Abstraction has 16775 states and 53458 transitions. [2022-03-03 17:47:47,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:47:47,708 INFO L276 IsEmpty]: Start isEmpty. Operand 16775 states and 53458 transitions. [2022-03-03 17:47:47,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:47:47,737 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:47:47,737 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:47:47,753 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Ended with exit code 0 [2022-03-03 17:47:47,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,120 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:47:47,937 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:47:47,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:47:47,938 INFO L85 PathProgramCache]: Analyzing trace with hash -862016753, now seen corresponding path program 120 times [2022-03-03 17:47:47,938 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:47:47,938 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003388076] [2022-03-03 17:47:47,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:47:47,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:47:47,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:47:48,140 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:47:48,140 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:47:48,140 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003388076] [2022-03-03 17:47:48,140 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003388076] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:47:48,140 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349921031] [2022-03-03 17:47:48,140 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:47:48,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:47:48,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:47:48,141 INFO L229 MonitoredProcess]: Starting monitored process 121 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:47:48,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Waiting until timeout for monitored process [2022-03-03 17:47:48,242 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-03 17:47:48,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:47:48,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:47:48,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:47:48,669 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:47:48,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:47:49,398 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:47:49,399 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349921031] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:47:49,399 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:47:49,399 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-03-03 17:47:49,399 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682267456] [2022-03-03 17:47:49,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:47:49,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-03-03 17:47:49,399 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:47:49,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-03-03 17:47:49,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1308, Unknown=0, NotChecked=0, Total=1482 [2022-03-03 17:47:49,400 INFO L87 Difference]: Start difference. First operand 16775 states and 53458 transitions. Second operand has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:47:54,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:47:54,819 INFO L93 Difference]: Finished difference Result 22719 states and 70522 transitions. [2022-03-03 17:47:54,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2022-03-03 17:47:54,820 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:47:54,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:47:54,872 INFO L225 Difference]: With dead ends: 22719 [2022-03-03 17:47:54,872 INFO L226 Difference]: Without dead ends: 22566 [2022-03-03 17:47:54,874 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 124 SyntacticMatches, 3 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5799 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=1839, Invalid=15983, Unknown=0, NotChecked=0, Total=17822 [2022-03-03 17:47:54,874 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 887 mSDsluCounter, 4776 mSDsCounter, 0 mSdLazyCounter, 2536 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 887 SdHoareTripleChecker+Valid, 4789 SdHoareTripleChecker+Invalid, 2703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 2536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:47:54,874 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [887 Valid, 4789 Invalid, 2703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 2536 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-03 17:47:54,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22566 states. [2022-03-03 17:47:55,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22566 to 17139. [2022-03-03 17:47:55,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17139 states, 17138 states have (on average 3.1844439257789707) internal successors, (54575), 17138 states have internal predecessors, (54575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:47:55,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17139 states to 17139 states and 54575 transitions. [2022-03-03 17:47:55,356 INFO L78 Accepts]: Start accepts. Automaton has 17139 states and 54575 transitions. Word has length 74 [2022-03-03 17:47:55,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:47:55,356 INFO L470 AbstractCegarLoop]: Abstraction has 17139 states and 54575 transitions. [2022-03-03 17:47:55,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:47:55,356 INFO L276 IsEmpty]: Start isEmpty. Operand 17139 states and 54575 transitions. [2022-03-03 17:47:55,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:47:55,386 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:47:55,386 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:47:55,402 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Forceful destruction successful, exit code 0 [2022-03-03 17:47:55,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 121 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2022-03-03 17:47:55,586 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:47:55,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:47:55,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1132809821, now seen corresponding path program 121 times [2022-03-03 17:47:55,587 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:47:55,587 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353865268] [2022-03-03 17:47:55,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:47:55,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:47:55,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:47:55,768 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:47:55,769 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:47:55,769 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353865268] [2022-03-03 17:47:55,769 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353865268] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:47:55,769 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668858858] [2022-03-03 17:47:55,769 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:47:55,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:47:55,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:47:55,770 INFO L229 MonitoredProcess]: Starting monitored process 122 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:47:55,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Waiting until timeout for monitored process [2022-03-03 17:47:55,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:47:55,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:47:55,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:47:56,278 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:47:56,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:47:56,810 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:47:56,810 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668858858] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:47:56,810 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:47:56,810 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-03-03 17:47:56,810 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912934378] [2022-03-03 17:47:56,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:47:56,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-03-03 17:47:56,811 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:47:56,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-03-03 17:47:56,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=1288, Unknown=0, NotChecked=0, Total=1482 [2022-03-03 17:47:56,811 INFO L87 Difference]: Start difference. First operand 17139 states and 54575 transitions. Second operand has 39 states, 39 states have (on average 3.6666666666666665) internal successors, (143), 39 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:48:02,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:48:02,885 INFO L93 Difference]: Finished difference Result 21335 states and 66341 transitions. [2022-03-03 17:48:02,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2022-03-03 17:48:02,885 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.6666666666666665) internal successors, (143), 39 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:48:02,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:48:02,935 INFO L225 Difference]: With dead ends: 21335 [2022-03-03 17:48:02,936 INFO L226 Difference]: Without dead ends: 20795 [2022-03-03 17:48:02,937 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 124 SyntacticMatches, 3 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9917 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=3621, Invalid=24101, Unknown=0, NotChecked=0, Total=27722 [2022-03-03 17:48:02,937 INFO L933 BasicCegarLoop]: 308 mSDtfsCounter, 1201 mSDsluCounter, 5155 mSDsCounter, 0 mSdLazyCounter, 2740 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1201 SdHoareTripleChecker+Valid, 5199 SdHoareTripleChecker+Invalid, 2945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 2740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:48:02,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1201 Valid, 5199 Invalid, 2945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 2740 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-03 17:48:02,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20795 states. [2022-03-03 17:48:03,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20795 to 17527. [2022-03-03 17:48:03,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17527 states, 17526 states have (on average 3.184868195823348) internal successors, (55818), 17526 states have internal predecessors, (55818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:48:03,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17527 states to 17527 states and 55818 transitions. [2022-03-03 17:48:03,320 INFO L78 Accepts]: Start accepts. Automaton has 17527 states and 55818 transitions. Word has length 74 [2022-03-03 17:48:03,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:48:03,320 INFO L470 AbstractCegarLoop]: Abstraction has 17527 states and 55818 transitions. [2022-03-03 17:48:03,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.6666666666666665) internal successors, (143), 39 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:48:03,320 INFO L276 IsEmpty]: Start isEmpty. Operand 17527 states and 55818 transitions. [2022-03-03 17:48:03,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:48:03,352 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:48:03,352 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:48:03,368 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Forceful destruction successful, exit code 0 [2022-03-03 17:48:03,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 122 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2022-03-03 17:48:03,552 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:48:03,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:48:03,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1741455465, now seen corresponding path program 122 times [2022-03-03 17:48:03,553 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:48:03,553 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917419550] [2022-03-03 17:48:03,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:48:03,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:48:03,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:48:03,740 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:48:03,740 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:48:03,740 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917419550] [2022-03-03 17:48:03,740 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917419550] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:48:03,740 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766096951] [2022-03-03 17:48:03,740 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:48:03,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:48:03,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:48:03,741 INFO L229 MonitoredProcess]: Starting monitored process 123 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:48:03,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Waiting until timeout for monitored process [2022-03-03 17:48:03,842 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:48:03,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:48:03,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:48:03,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:48:04,265 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:48:04,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:48:04,819 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:48:04,819 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766096951] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:48:04,820 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:48:04,820 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-03-03 17:48:04,820 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627705804] [2022-03-03 17:48:04,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:48:04,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-03-03 17:48:04,820 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:48:04,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-03-03 17:48:04,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=1312, Unknown=0, NotChecked=0, Total=1482 [2022-03-03 17:48:04,820 INFO L87 Difference]: Start difference. First operand 17527 states and 55818 transitions. Second operand has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:48:10,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:48:10,854 INFO L93 Difference]: Finished difference Result 24491 states and 75233 transitions. [2022-03-03 17:48:10,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2022-03-03 17:48:10,854 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:48:10,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:48:10,956 INFO L225 Difference]: With dead ends: 24491 [2022-03-03 17:48:10,957 INFO L226 Difference]: Without dead ends: 24287 [2022-03-03 17:48:10,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 124 SyntacticMatches, 3 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9395 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=3154, Invalid=23252, Unknown=0, NotChecked=0, Total=26406 [2022-03-03 17:48:10,960 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 1074 mSDsluCounter, 4324 mSDsCounter, 0 mSdLazyCounter, 2111 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1074 SdHoareTripleChecker+Valid, 4394 SdHoareTripleChecker+Invalid, 2362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 2111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-03 17:48:10,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1074 Valid, 4394 Invalid, 2362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 2111 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-03 17:48:10,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24287 states. [2022-03-03 17:48:11,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24287 to 17551. [2022-03-03 17:48:11,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17551 states, 17550 states have (on average 3.185868945868946) internal successors, (55912), 17550 states have internal predecessors, (55912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:48:11,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17551 states to 17551 states and 55912 transitions. [2022-03-03 17:48:11,638 INFO L78 Accepts]: Start accepts. Automaton has 17551 states and 55912 transitions. Word has length 74 [2022-03-03 17:48:11,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:48:11,638 INFO L470 AbstractCegarLoop]: Abstraction has 17551 states and 55912 transitions. [2022-03-03 17:48:11,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:48:11,638 INFO L276 IsEmpty]: Start isEmpty. Operand 17551 states and 55912 transitions. [2022-03-03 17:48:11,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:48:11,670 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:48:11,670 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:48:11,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Forceful destruction successful, exit code 0 [2022-03-03 17:48:11,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124,123 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:48:11,883 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:48:11,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:48:11,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1073624637, now seen corresponding path program 123 times [2022-03-03 17:48:11,884 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:48:11,884 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115386288] [2022-03-03 17:48:11,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:48:11,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:48:11,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:48:12,057 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:48:12,057 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:48:12,057 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115386288] [2022-03-03 17:48:12,057 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115386288] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:48:12,057 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280511666] [2022-03-03 17:48:12,058 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:48:12,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:48:12,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:48:12,059 INFO L229 MonitoredProcess]: Starting monitored process 124 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:48:12,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Waiting until timeout for monitored process [2022-03-03 17:48:12,160 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 17:48:12,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:48:12,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:48:12,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:48:12,542 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:48:12,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:48:13,032 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:48:13,032 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280511666] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:48:13,032 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:48:13,033 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 38 [2022-03-03 17:48:13,033 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189960851] [2022-03-03 17:48:13,033 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:48:13,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-03-03 17:48:13,033 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:48:13,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-03-03 17:48:13,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1250, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 17:48:13,033 INFO L87 Difference]: Start difference. First operand 17551 states and 55912 transitions. Second operand has 38 states, 38 states have (on average 3.736842105263158) internal successors, (142), 38 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:48:15,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:48:15,998 INFO L93 Difference]: Finished difference Result 21649 states and 67544 transitions. [2022-03-03 17:48:15,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-03-03 17:48:15,998 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.736842105263158) internal successors, (142), 38 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:48:15,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:48:16,065 INFO L225 Difference]: With dead ends: 21649 [2022-03-03 17:48:16,066 INFO L226 Difference]: Without dead ends: 21547 [2022-03-03 17:48:16,067 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 125 SyntacticMatches, 3 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3227 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1158, Invalid=9554, Unknown=0, NotChecked=0, Total=10712 [2022-03-03 17:48:16,067 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 668 mSDsluCounter, 3718 mSDsCounter, 0 mSdLazyCounter, 1663 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 668 SdHoareTripleChecker+Valid, 3772 SdHoareTripleChecker+Invalid, 1780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:48:16,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [668 Valid, 3772 Invalid, 1780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1663 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:48:16,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21547 states. [2022-03-03 17:48:16,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21547 to 17603. [2022-03-03 17:48:16,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17603 states, 17602 states have (on average 3.1850357913873424) internal successors, (56063), 17602 states have internal predecessors, (56063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:48:16,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17603 states to 17603 states and 56063 transitions. [2022-03-03 17:48:16,568 INFO L78 Accepts]: Start accepts. Automaton has 17603 states and 56063 transitions. Word has length 74 [2022-03-03 17:48:16,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:48:16,568 INFO L470 AbstractCegarLoop]: Abstraction has 17603 states and 56063 transitions. [2022-03-03 17:48:16,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.736842105263158) internal successors, (142), 38 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:48:16,569 INFO L276 IsEmpty]: Start isEmpty. Operand 17603 states and 56063 transitions. [2022-03-03 17:48:16,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:48:16,600 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:48:16,600 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:48:16,616 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Forceful destruction successful, exit code 0 [2022-03-03 17:48:16,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 124 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2022-03-03 17:48:16,864 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:48:16,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:48:16,865 INFO L85 PathProgramCache]: Analyzing trace with hash -597817053, now seen corresponding path program 124 times [2022-03-03 17:48:16,865 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:48:16,865 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043536746] [2022-03-03 17:48:16,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:48:16,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:48:16,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:48:17,038 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:48:17,038 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:48:17,038 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043536746] [2022-03-03 17:48:17,038 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043536746] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:48:17,038 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464638033] [2022-03-03 17:48:17,038 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:48:17,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:48:17,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:48:17,039 INFO L229 MonitoredProcess]: Starting monitored process 125 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:48:17,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Waiting until timeout for monitored process [2022-03-03 17:48:17,139 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:48:17,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:48:17,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:48:17,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:48:17,588 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:48:17,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:48:18,101 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:48:18,101 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464638033] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:48:18,101 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:48:18,101 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-03-03 17:48:18,101 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443298451] [2022-03-03 17:48:18,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:48:18,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-03-03 17:48:18,101 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:48:18,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-03-03 17:48:18,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=1377, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 17:48:18,102 INFO L87 Difference]: Start difference. First operand 17603 states and 56063 transitions. Second operand has 40 states, 40 states have (on average 3.65) internal successors, (146), 40 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:48:22,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:48:22,006 INFO L93 Difference]: Finished difference Result 21110 states and 65940 transitions. [2022-03-03 17:48:22,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-03-03 17:48:22,006 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.65) internal successors, (146), 40 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:48:22,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:48:22,060 INFO L225 Difference]: With dead ends: 21110 [2022-03-03 17:48:22,060 INFO L226 Difference]: Without dead ends: 20897 [2022-03-03 17:48:22,062 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 123 SyntacticMatches, 3 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4921 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1793, Invalid=13459, Unknown=0, NotChecked=0, Total=15252 [2022-03-03 17:48:22,062 INFO L933 BasicCegarLoop]: 267 mSDtfsCounter, 923 mSDsluCounter, 5446 mSDsCounter, 0 mSdLazyCounter, 2484 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 5474 SdHoareTripleChecker+Invalid, 2648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 2484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-03 17:48:22,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [923 Valid, 5474 Invalid, 2648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 2484 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-03 17:48:22,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20897 states. [2022-03-03 17:48:22,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20897 to 17975. [2022-03-03 17:48:22,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17975 states, 17974 states have (on average 3.1951708022699457) internal successors, (57430), 17974 states have internal predecessors, (57430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:48:22,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17975 states to 17975 states and 57430 transitions. [2022-03-03 17:48:22,471 INFO L78 Accepts]: Start accepts. Automaton has 17975 states and 57430 transitions. Word has length 74 [2022-03-03 17:48:22,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:48:22,471 INFO L470 AbstractCegarLoop]: Abstraction has 17975 states and 57430 transitions. [2022-03-03 17:48:22,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.65) internal successors, (146), 40 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:48:22,471 INFO L276 IsEmpty]: Start isEmpty. Operand 17975 states and 57430 transitions. [2022-03-03 17:48:22,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:48:22,502 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:48:22,502 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:48:22,518 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Forceful destruction successful, exit code 0 [2022-03-03 17:48:22,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 125 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable126 [2022-03-03 17:48:22,703 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:48:22,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:48:22,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1879654883, now seen corresponding path program 125 times [2022-03-03 17:48:22,704 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:48:22,704 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452932586] [2022-03-03 17:48:22,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:48:22,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:48:22,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:48:22,874 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:48:22,874 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:48:22,874 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452932586] [2022-03-03 17:48:22,874 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452932586] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:48:22,874 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690463854] [2022-03-03 17:48:22,875 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:48:22,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:48:22,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:48:22,876 INFO L229 MonitoredProcess]: Starting monitored process 126 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:48:22,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Waiting until timeout for monitored process [2022-03-03 17:48:22,978 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 17:48:22,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:48:22,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 17:48:22,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:48:23,501 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:48:23,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:48:24,009 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:48:24,010 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690463854] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:48:24,010 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:48:24,010 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 43 [2022-03-03 17:48:24,010 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997929061] [2022-03-03 17:48:24,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:48:24,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-03-03 17:48:24,010 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:48:24,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-03-03 17:48:24,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=1603, Unknown=0, NotChecked=0, Total=1806 [2022-03-03 17:48:24,011 INFO L87 Difference]: Start difference. First operand 17975 states and 57430 transitions. Second operand has 43 states, 43 states have (on average 3.6511627906976742) internal successors, (157), 43 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:48:25,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:48:25,218 INFO L93 Difference]: Finished difference Result 20898 states and 65817 transitions. [2022-03-03 17:48:25,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-03 17:48:25,218 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 3.6511627906976742) internal successors, (157), 43 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:48:25,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:48:25,266 INFO L225 Difference]: With dead ends: 20898 [2022-03-03 17:48:25,266 INFO L226 Difference]: Without dead ends: 20616 [2022-03-03 17:48:25,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 122 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1437 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=615, Invalid=4641, Unknown=0, NotChecked=0, Total=5256 [2022-03-03 17:48:25,267 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 560 mSDsluCounter, 2731 mSDsCounter, 0 mSdLazyCounter, 1078 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 560 SdHoareTripleChecker+Valid, 2779 SdHoareTripleChecker+Invalid, 1146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1078 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:48:25,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [560 Valid, 2779 Invalid, 1146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1078 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:48:25,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20616 states. [2022-03-03 17:48:25,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20616 to 17975. [2022-03-03 17:48:25,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17975 states, 17974 states have (on average 3.1949482585957494) internal successors, (57426), 17974 states have internal predecessors, (57426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:48:25,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17975 states to 17975 states and 57426 transitions. [2022-03-03 17:48:25,672 INFO L78 Accepts]: Start accepts. Automaton has 17975 states and 57426 transitions. Word has length 74 [2022-03-03 17:48:25,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:48:25,672 INFO L470 AbstractCegarLoop]: Abstraction has 17975 states and 57426 transitions. [2022-03-03 17:48:25,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 3.6511627906976742) internal successors, (157), 43 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:48:25,673 INFO L276 IsEmpty]: Start isEmpty. Operand 17975 states and 57426 transitions. [2022-03-03 17:48:25,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:48:25,759 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:48:25,759 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:48:25,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Forceful destruction successful, exit code 0 [2022-03-03 17:48:25,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable127 [2022-03-03 17:48:25,963 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:48:25,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:48:25,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1277837271, now seen corresponding path program 126 times [2022-03-03 17:48:25,964 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:48:25,964 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390874765] [2022-03-03 17:48:25,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:48:25,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:48:25,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:48:26,144 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:48:26,144 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:48:26,144 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390874765] [2022-03-03 17:48:26,144 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390874765] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:48:26,144 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133613335] [2022-03-03 17:48:26,144 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:48:26,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:48:26,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:48:26,146 INFO L229 MonitoredProcess]: Starting monitored process 127 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:48:26,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Waiting until timeout for monitored process [2022-03-03 17:48:26,250 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-03 17:48:26,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:48:26,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:48:26,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:48:26,681 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:48:26,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:48:27,137 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:48:27,137 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133613335] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:48:27,137 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:48:27,137 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-03-03 17:48:27,137 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969451539] [2022-03-03 17:48:27,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:48:27,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-03-03 17:48:27,137 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:48:27,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-03-03 17:48:27,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=1299, Unknown=0, NotChecked=0, Total=1482 [2022-03-03 17:48:27,138 INFO L87 Difference]: Start difference. First operand 17975 states and 57426 transitions. Second operand has 39 states, 39 states have (on average 3.6923076923076925) internal successors, (144), 39 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:48:29,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:48:29,667 INFO L93 Difference]: Finished difference Result 23763 states and 73975 transitions. [2022-03-03 17:48:29,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-03-03 17:48:29,667 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.6923076923076925) internal successors, (144), 39 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:48:29,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:48:29,721 INFO L225 Difference]: With dead ends: 23763 [2022-03-03 17:48:29,721 INFO L226 Difference]: Without dead ends: 23610 [2022-03-03 17:48:29,722 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 125 SyntacticMatches, 2 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3446 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1312, Invalid=9818, Unknown=0, NotChecked=0, Total=11130 [2022-03-03 17:48:29,722 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 737 mSDsluCounter, 3764 mSDsCounter, 0 mSdLazyCounter, 1917 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 3825 SdHoareTripleChecker+Invalid, 1999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:48:29,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [737 Valid, 3825 Invalid, 1999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1917 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:48:29,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23610 states. [2022-03-03 17:48:30,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23610 to 18239. [2022-03-03 17:48:30,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18239 states, 18238 states have (on average 3.199692948788244) internal successors, (58356), 18238 states have internal predecessors, (58356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:48:30,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18239 states to 18239 states and 58356 transitions. [2022-03-03 17:48:30,176 INFO L78 Accepts]: Start accepts. Automaton has 18239 states and 58356 transitions. Word has length 74 [2022-03-03 17:48:30,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:48:30,176 INFO L470 AbstractCegarLoop]: Abstraction has 18239 states and 58356 transitions. [2022-03-03 17:48:30,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.6923076923076925) internal successors, (144), 39 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:48:30,176 INFO L276 IsEmpty]: Start isEmpty. Operand 18239 states and 58356 transitions. [2022-03-03 17:48:30,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:48:30,207 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:48:30,207 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:48:30,222 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Forceful destruction successful, exit code 0 [2022-03-03 17:48:30,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 127 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable128 [2022-03-03 17:48:30,407 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:48:30,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:48:30,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1298554657, now seen corresponding path program 127 times [2022-03-03 17:48:30,408 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:48:30,408 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490171305] [2022-03-03 17:48:30,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:48:30,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:48:30,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:48:30,593 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:48:30,593 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:48:30,593 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490171305] [2022-03-03 17:48:30,593 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490171305] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:48:30,593 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260747819] [2022-03-03 17:48:30,594 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:48:30,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:48:30,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:48:30,595 INFO L229 MonitoredProcess]: Starting monitored process 128 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:48:30,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Waiting until timeout for monitored process [2022-03-03 17:48:30,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:48:30,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:48:30,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:48:31,131 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:48:31,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:48:31,610 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:48:31,611 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260747819] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:48:31,611 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:48:31,611 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-03-03 17:48:31,611 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150966785] [2022-03-03 17:48:31,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:48:31,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-03-03 17:48:31,611 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:48:31,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-03-03 17:48:31,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=1367, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 17:48:31,612 INFO L87 Difference]: Start difference. First operand 18239 states and 58356 transitions. Second operand has 40 states, 40 states have (on average 3.65) internal successors, (146), 40 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2022-03-03 17:48:33,772 WARN L244 SmtUtils]: Removed 9 from assertion stack [2022-03-03 17:48:33,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-03-03 17:48:33,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1910 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=868, Invalid=5774, Unknown=0, NotChecked=0, Total=6642 [2022-03-03 17:48:33,773 INFO L933 BasicCegarLoop]: 158 mSDtfsCounter, 313 mSDsluCounter, 2943 mSDsCounter, 0 mSdLazyCounter, 1777 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 3069 SdHoareTripleChecker+Invalid, 1844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:48:33,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [313 Valid, 3069 Invalid, 1844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1777 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:48:33,774 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-03-03 17:48:33,838 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-03 17:48:33,839 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Ended with exit code 0 [2022-03-03 17:48:33,838 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-03 17:48:33,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129,128 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:48:33,974 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (18239states) and FLOYD_HOARE automaton (currently 55 states, 40 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 47 for 66ms.. [2022-03-03 17:48:33,976 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-03-03 17:48:33,976 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-03-03 17:48:33,978 INFO L732 BasicCegarLoop]: Path program histogram: [127, 1, 1, 1] [2022-03-03 17:48:33,979 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-03 17:48:33,979 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-03 17:48:33,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.03 05:48:33 BasicIcfg [2022-03-03 17:48:33,980 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-03 17:48:33,981 INFO L158 Benchmark]: Toolchain (without parser) took 737555.56ms. Allocated memory was 197.1MB in the beginning and 1.5GB in the end (delta: 1.3GB). Free memory was 141.9MB in the beginning and 1.2GB in the end (delta: -1.0GB). Peak memory consumption was 942.1MB. Max. memory is 8.0GB. [2022-03-03 17:48:33,981 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 197.1MB. Free memory was 157.8MB in the beginning and 157.7MB in the end (delta: 80.4kB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-03 17:48:33,981 INFO L158 Benchmark]: CACSL2BoogieTranslator took 197.15ms. Allocated memory is still 197.1MB. Free memory was 141.7MB in the beginning and 166.9MB in the end (delta: -25.1MB). Peak memory consumption was 12.5MB. Max. memory is 8.0GB. [2022-03-03 17:48:33,981 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.83ms. Allocated memory is still 197.1MB. Free memory was 166.9MB in the beginning and 165.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-03 17:48:33,981 INFO L158 Benchmark]: Boogie Preprocessor took 12.79ms. Allocated memory is still 197.1MB. Free memory was 165.1MB in the beginning and 164.0MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-03 17:48:33,981 INFO L158 Benchmark]: RCFGBuilder took 317.30ms. Allocated memory is still 197.1MB. Free memory was 163.9MB in the beginning and 151.0MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-03-03 17:48:33,981 INFO L158 Benchmark]: TraceAbstraction took 737000.55ms. Allocated memory was 197.1MB in the beginning and 1.5GB in the end (delta: 1.3GB). Free memory was 150.4MB in the beginning and 1.2GB in the end (delta: -1.0GB). Peak memory consumption was 951.6MB. Max. memory is 8.0GB. [2022-03-03 17:48:33,981 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 197.1MB. Free memory was 157.8MB in the beginning and 157.7MB in the end (delta: 80.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 197.15ms. Allocated memory is still 197.1MB. Free memory was 141.7MB in the beginning and 166.9MB in the end (delta: -25.1MB). Peak memory consumption was 12.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 19.83ms. Allocated memory is still 197.1MB. Free memory was 166.9MB in the beginning and 165.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 12.79ms. Allocated memory is still 197.1MB. Free memory was 165.1MB in the beginning and 164.0MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 317.30ms. Allocated memory is still 197.1MB. Free memory was 163.9MB in the beginning and 151.0MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 737000.55ms. Allocated memory was 197.1MB in the beginning and 1.5GB in the end (delta: 1.3GB). Free memory was 150.4MB in the beginning and 1.2GB in the end (delta: -1.0GB). Peak memory consumption was 951.6MB. 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 - TimeoutResultAtElement [Line: 78]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (18239states) and FLOYD_HOARE automaton (currently 55 states, 40 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 47 for 66ms.. - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (18239states) and FLOYD_HOARE automaton (currently 55 states, 40 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 47 for 66ms.. - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (18239states) and FLOYD_HOARE automaton (currently 55 states, 40 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 47 for 66ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 98 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 736.9s, OverallIterations: 130, TraceHistogramMax: 2, PathProgramHistogramMax: 127, EmptinessCheckTime: 1.4s, AutomataDifference: 537.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 133273 SdHoareTripleChecker+Valid, 103.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 133273 mSDsluCounter, 547488 SdHoareTripleChecker+Invalid, 87.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 543414 mSDsCounter, 20037 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 277926 IncrementalHoareTripleChecker+Invalid, 297963 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20037 mSolverCounterUnsat, 30642 mSDtfsCounter, 277926 mSolverCounterSat, 1.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 31494 GetRequests, 15513 SyntacticMatches, 263 SemanticMatches, 15717 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 823276 ImplicationChecksByTransitivity, 473.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18239occurred in iteration=129, InterpolantAutomatonStates: 13246, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 18.6s AutomataMinimizationTime, 129 MinimizatonAttempts, 373035 StatesRemovedByMinimization, 128 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.8s SsaConstructionTime, 2.5s SatisfiabilityAnalysisTime, 142.0s InterpolantComputationTime, 18537 NumberOfCodeBlocks, 18411 NumberOfCodeBlocksAsserted, 404 NumberOfCheckSat, 27326 ConstructedInterpolants, 0 QuantifiedInterpolants, 235614 SizeOfPredicates, 1691 NumberOfNonLiveVariables, 19921 ConjunctsInSsa, 3028 ConjunctsInUnsatCore, 384 InterpolantComputations, 3 PerfectInterpolantSequences, 4/2239 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown