/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-more-nonblocking-counter-alt2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.abstract-por-f0ea240 [2022-02-10 22:53:09,371 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-10 22:53:09,372 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-10 22:53:09,403 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-10 22:53:09,404 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-10 22:53:09,405 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-10 22:53:09,406 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-10 22:53:09,416 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-10 22:53:09,418 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-10 22:53:09,418 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-10 22:53:09,419 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-10 22:53:09,419 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-10 22:53:09,420 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-10 22:53:09,420 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-10 22:53:09,421 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-10 22:53:09,421 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-10 22:53:09,422 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-10 22:53:09,422 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-10 22:53:09,423 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-10 22:53:09,424 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-10 22:53:09,425 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-10 22:53:09,431 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-10 22:53:09,431 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-10 22:53:09,432 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-10 22:53:09,445 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-10 22:53:09,445 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-10 22:53:09,445 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-10 22:53:09,446 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-10 22:53:09,446 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-10 22:53:09,447 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2022-02-10 22:53:09,450 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-10 22:53:09,450 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-10 22:53:09,451 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-10 22:53:09,452 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-02-10 22:53:09,471 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-10 22:53:09,471 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-10 22:53:09,471 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-10 22:53:09,472 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-10 22:53:09,472 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-10 22:53:09,472 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-10 22:53:09,473 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-10 22:53:09,473 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-10 22:53:09,473 INFO L138 SettingsManager]: * Use SBE=true [2022-02-10 22:53:09,473 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-10 22:53:09,473 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-10 22:53:09,473 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-10 22:53:09,473 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-10 22:53:09,473 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-10 22:53:09,473 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-10 22:53:09,473 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-10 22:53:09,473 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-10 22:53:09,474 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-10 22:53:09,474 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-10 22:53:09,474 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-10 22:53:09,474 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-10 22:53:09,474 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-10 22:53:09,474 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-10 22:53:09,474 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-10 22:53:09,474 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-10 22:53:09,474 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-10 22:53:09,474 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-10 22:53:09,474 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-10 22:53:09,475 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-10 22:53:09,475 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-10 22:53:09,475 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-10 22:53:09,475 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-10 22:53:09,475 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-10 22:53:09,475 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-10 22:53:09,664 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-10 22:53:09,680 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-10 22:53:09,682 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-10 22:53:09,683 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-10 22:53:09,683 INFO L275 PluginConnector]: CDTParser initialized [2022-02-10 22:53:09,684 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-nonblocking-counter-alt2.wvr.c [2022-02-10 22:53:09,723 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb51fe127/afe6a09aa8ce4daeabeb456538180bf7/FLAGafcd63923 [2022-02-10 22:53:10,032 INFO L306 CDTParser]: Found 1 translation units. [2022-02-10 22:53:10,032 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-nonblocking-counter-alt2.wvr.c [2022-02-10 22:53:10,037 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb51fe127/afe6a09aa8ce4daeabeb456538180bf7/FLAGafcd63923 [2022-02-10 22:53:10,471 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb51fe127/afe6a09aa8ce4daeabeb456538180bf7 [2022-02-10 22:53:10,473 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-10 22:53:10,474 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-10 22:53:10,475 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-10 22:53:10,475 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-10 22:53:10,489 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-10 22:53:10,490 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.02 10:53:10" (1/1) ... [2022-02-10 22:53:10,491 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ed26c1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:53:10, skipping insertion in model container [2022-02-10 22:53:10,491 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.02 10:53:10" (1/1) ... [2022-02-10 22:53:10,500 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-10 22:53:10,518 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-10 22:53:10,648 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-more-nonblocking-counter-alt2.wvr.c[2147,2160] [2022-02-10 22:53:10,650 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-10 22:53:10,655 INFO L203 MainTranslator]: Completed pre-run [2022-02-10 22:53:10,668 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-more-nonblocking-counter-alt2.wvr.c[2147,2160] [2022-02-10 22:53:10,672 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-10 22:53:10,680 INFO L208 MainTranslator]: Completed translation [2022-02-10 22:53:10,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:53:10 WrapperNode [2022-02-10 22:53:10,681 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-10 22:53:10,681 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-10 22:53:10,682 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-10 22:53:10,682 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-10 22:53:10,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:53:10" (1/1) ... [2022-02-10 22:53:10,692 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:53:10" (1/1) ... [2022-02-10 22:53:10,704 INFO L137 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 55 [2022-02-10 22:53:10,705 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-10 22:53:10,705 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-10 22:53:10,705 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-10 22:53:10,705 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-10 22:53:10,713 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:53:10" (1/1) ... [2022-02-10 22:53:10,713 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:53:10" (1/1) ... [2022-02-10 22:53:10,715 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:53:10" (1/1) ... [2022-02-10 22:53:10,715 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:53:10" (1/1) ... [2022-02-10 22:53:10,718 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:53:10" (1/1) ... [2022-02-10 22:53:10,720 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:53:10" (1/1) ... [2022-02-10 22:53:10,721 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:53:10" (1/1) ... [2022-02-10 22:53:10,722 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-10 22:53:10,723 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-10 22:53:10,723 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-10 22:53:10,723 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-10 22:53:10,724 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:53:10" (1/1) ... [2022-02-10 22:53:10,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-10 22:53:10,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:53:10,750 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-10 22:53:10,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-10 22:53:10,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-10 22:53:10,783 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-02-10 22:53:10,783 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-02-10 22:53:10,783 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-02-10 22:53:10,783 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-02-10 22:53:10,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-10 22:53:10,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-10 22:53:10,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-10 22:53:10,783 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-02-10 22:53:10,783 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-02-10 22:53:10,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-10 22:53:10,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-10 22:53:10,784 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-10 22:53:10,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-10 22:53:10,785 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-10 22:53:10,839 INFO L234 CfgBuilder]: Building ICFG [2022-02-10 22:53:10,841 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-10 22:53:11,054 INFO L275 CfgBuilder]: Performing block encoding [2022-02-10 22:53:11,089 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-10 22:53:11,089 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-02-10 22:53:11,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 10:53:11 BoogieIcfgContainer [2022-02-10 22:53:11,091 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-10 22:53:11,092 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-10 22:53:11,092 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-10 22:53:11,100 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-10 22:53:11,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.02 10:53:10" (1/3) ... [2022-02-10 22:53:11,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ce418b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.02 10:53:11, skipping insertion in model container [2022-02-10 22:53:11,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:53:10" (2/3) ... [2022-02-10 22:53:11,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ce418b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.02 10:53:11, skipping insertion in model container [2022-02-10 22:53:11,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 10:53:11" (3/3) ... [2022-02-10 22:53:11,102 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-nonblocking-counter-alt2.wvr.c [2022-02-10 22:53:11,106 WARN L154 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-10 22:53:11,106 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-10 22:53:11,106 INFO L168 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-10 22:53:11,106 INFO L538 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-10 22:53:11,130 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:53:11,131 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:53:11,131 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:53:11,132 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:53:11,132 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:53:11,132 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:53:11,133 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:53:11,133 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:53:11,133 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:53:11,133 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:53:11,134 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:53:11,134 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:53:11,134 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:53:11,134 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:53:11,134 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:53:11,134 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:53:11,134 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:53:11,134 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:53:11,135 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:53:11,135 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:53:11,135 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:53:11,135 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:53:11,136 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:53:11,136 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:53:11,136 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:53:11,137 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:53:11,137 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:53:11,137 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:53:11,137 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:53:11,138 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:53:11,138 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:53:11,138 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:53:11,138 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:53:11,138 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:53:11,139 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:53:11,139 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:53:11,139 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:53:11,139 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:53:11,142 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:53:11,142 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:53:11,142 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:53:11,142 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:53:11,143 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:53:11,143 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:53:11,144 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:53:11,144 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:53:11,147 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-02-10 22:53:11,177 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-10 22:53:11,186 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-10 22:53:11,186 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-02-10 22:53:11,201 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 85 places, 84 transitions, 184 flow [2022-02-10 22:53:11,261 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 330 states, 329 states have (on average 2.5866261398176293) internal successors, (851), 329 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:53:11,264 INFO L276 IsEmpty]: Start isEmpty. Operand has 330 states, 329 states have (on average 2.5866261398176293) internal successors, (851), 329 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:53:11,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-02-10 22:53:11,273 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:53:11,273 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:53:11,274 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:53:11,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:53:11,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1161800666, now seen corresponding path program 1 times [2022-02-10 22:53:11,288 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:53:11,288 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988848953] [2022-02-10 22:53:11,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:53:11,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:53:11,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:53:11,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:53:11,482 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:53:11,482 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988848953] [2022-02-10 22:53:11,483 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988848953] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:53:11,483 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:53:11,483 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-10 22:53:11,484 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555630568] [2022-02-10 22:53:11,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:53:11,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-02-10 22:53:11,488 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:53:11,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-02-10 22:53:11,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-10 22:53:11,517 INFO L87 Difference]: Start difference. First operand has 330 states, 329 states have (on average 2.5866261398176293) internal successors, (851), 329 states have internal predecessors, (851), 0 states have call successors, (0), 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 30.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:53:11,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:53:11,557 INFO L93 Difference]: Finished difference Result 330 states and 780 transitions. [2022-02-10 22:53:11,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-10 22:53:11,559 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-02-10 22:53:11,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:53:11,568 INFO L225 Difference]: With dead ends: 330 [2022-02-10 22:53:11,568 INFO L226 Difference]: Without dead ends: 328 [2022-02-10 22:53:11,569 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-10 22:53:11,572 INFO L934 BasicCegarLoop]: 64 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 22:53:11,572 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 64 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 22:53:11,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2022-02-10 22:53:11,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 328. [2022-02-10 22:53:11,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 327 states have (on average 2.379204892966361) internal successors, (778), 327 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:53:11,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 778 transitions. [2022-02-10 22:53:11,617 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 778 transitions. Word has length 60 [2022-02-10 22:53:11,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:53:11,617 INFO L470 AbstractCegarLoop]: Abstraction has 328 states and 778 transitions. [2022-02-10 22:53:11,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:53:11,618 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 778 transitions. [2022-02-10 22:53:11,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-02-10 22:53:11,622 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:53:11,623 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:53:11,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-10 22:53:11,623 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:53:11,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:53:11,625 INFO L85 PathProgramCache]: Analyzing trace with hash 651266489, now seen corresponding path program 1 times [2022-02-10 22:53:11,625 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:53:11,626 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192690607] [2022-02-10 22:53:11,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:53:11,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:53:11,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:53:11,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:53:11,827 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:53:11,827 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192690607] [2022-02-10 22:53:11,827 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192690607] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:53:11,827 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:53:11,827 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-10 22:53:11,827 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683518163] [2022-02-10 22:53:11,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:53:11,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-10 22:53:11,829 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:53:11,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-10 22:53:11,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-02-10 22:53:11,829 INFO L87 Difference]: Start difference. First operand 328 states and 778 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:53:11,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:53:11,908 INFO L93 Difference]: Finished difference Result 448 states and 1090 transitions. [2022-02-10 22:53:11,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-10 22:53:11,908 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-02-10 22:53:11,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:53:11,911 INFO L225 Difference]: With dead ends: 448 [2022-02-10 22:53:11,911 INFO L226 Difference]: Without dead ends: 448 [2022-02-10 22:53:11,911 INFO L933 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 [2022-02-10 22:53:11,912 INFO L934 BasicCegarLoop]: 66 mSDtfsCounter, 147 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 22:53:11,913 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 135 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 22:53:11,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2022-02-10 22:53:11,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 358. [2022-02-10 22:53:11,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 357 states have (on average 2.3977591036414565) internal successors, (856), 357 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:53:11,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 856 transitions. [2022-02-10 22:53:11,931 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 856 transitions. Word has length 60 [2022-02-10 22:53:11,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:53:11,931 INFO L470 AbstractCegarLoop]: Abstraction has 358 states and 856 transitions. [2022-02-10 22:53:11,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:53:11,932 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 856 transitions. [2022-02-10 22:53:11,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-02-10 22:53:11,934 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:53:11,934 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:53:11,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-10 22:53:11,934 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:53:11,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:53:11,934 INFO L85 PathProgramCache]: Analyzing trace with hash -72683847, now seen corresponding path program 1 times [2022-02-10 22:53:11,935 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:53:11,935 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461531471] [2022-02-10 22:53:11,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:53:11,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:53:11,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:53:12,054 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:53:12,054 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:53:12,054 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461531471] [2022-02-10 22:53:12,055 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461531471] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:53:12,055 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552206774] [2022-02-10 22:53:12,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:53:12,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:53:12,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:53:12,057 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:53:12,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-10 22:53:12,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:53:12,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-10 22:53:12,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:53:12,377 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:53:12,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:53:12,506 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:53:12,506 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552206774] provided 1 perfect and 1 imperfect interpolant sequences [2022-02-10 22:53:12,506 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-02-10 22:53:12,506 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 5] total 7 [2022-02-10 22:53:12,507 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515098251] [2022-02-10 22:53:12,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:53:12,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-10 22:53:12,510 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:53:12,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-10 22:53:12,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-02-10 22:53:12,511 INFO L87 Difference]: Start difference. First operand 358 states and 856 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:53:12,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:53:12,543 INFO L93 Difference]: Finished difference Result 425 states and 1038 transitions. [2022-02-10 22:53:12,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-10 22:53:12,543 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-02-10 22:53:12,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:53:12,546 INFO L225 Difference]: With dead ends: 425 [2022-02-10 22:53:12,546 INFO L226 Difference]: Without dead ends: 425 [2022-02-10 22:53:12,546 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 126 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-02-10 22:53:12,549 INFO L934 BasicCegarLoop]: 84 mSDtfsCounter, 35 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 22:53:12,550 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 150 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 22:53:12,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2022-02-10 22:53:12,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 393. [2022-02-10 22:53:12,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 2.423469387755102) internal successors, (950), 392 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:53:12,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 950 transitions. [2022-02-10 22:53:12,577 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 950 transitions. Word has length 65 [2022-02-10 22:53:12,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:53:12,577 INFO L470 AbstractCegarLoop]: Abstraction has 393 states and 950 transitions. [2022-02-10 22:53:12,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:53:12,577 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 950 transitions. [2022-02-10 22:53:12,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-02-10 22:53:12,579 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:53:12,579 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:53:12,611 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-02-10 22:53:12,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:53:12,786 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:53:12,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:53:12,786 INFO L85 PathProgramCache]: Analyzing trace with hash 2097537209, now seen corresponding path program 2 times [2022-02-10 22:53:12,786 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:53:12,787 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405380191] [2022-02-10 22:53:12,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:53:12,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:53:12,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:53:12,878 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:53:12,879 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:53:12,879 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405380191] [2022-02-10 22:53:12,879 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405380191] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:53:12,879 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937386710] [2022-02-10 22:53:12,879 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 22:53:12,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:53:12,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:53:12,884 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:53:12,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-10 22:53:12,935 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-02-10 22:53:12,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:53:12,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 22:53:12,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:53:13,204 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 22:53:13,204 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-10 22:53:13,205 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937386710] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:53:13,205 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-10 22:53:13,205 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2022-02-10 22:53:13,205 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307262372] [2022-02-10 22:53:13,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:53:13,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-10 22:53:13,205 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:53:13,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-10 22:53:13,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-02-10 22:53:13,206 INFO L87 Difference]: Start difference. First operand 393 states and 950 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:53:13,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:53:13,314 INFO L93 Difference]: Finished difference Result 479 states and 1182 transitions. [2022-02-10 22:53:13,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 22:53:13,315 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-02-10 22:53:13,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:53:13,317 INFO L225 Difference]: With dead ends: 479 [2022-02-10 22:53:13,317 INFO L226 Difference]: Without dead ends: 479 [2022-02-10 22:53:13,320 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2022-02-10 22:53:13,322 INFO L934 BasicCegarLoop]: 68 mSDtfsCounter, 112 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 22:53:13,322 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 166 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 22:53:13,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2022-02-10 22:53:13,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 401. [2022-02-10 22:53:13,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 400 states have (on average 2.43) internal successors, (972), 400 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:53:13,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 972 transitions. [2022-02-10 22:53:13,333 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 972 transitions. Word has length 65 [2022-02-10 22:53:13,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:53:13,334 INFO L470 AbstractCegarLoop]: Abstraction has 401 states and 972 transitions. [2022-02-10 22:53:13,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:53:13,335 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 972 transitions. [2022-02-10 22:53:13,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-02-10 22:53:13,336 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:53:13,336 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:53:13,355 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-10 22:53:13,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-02-10 22:53:13,552 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:53:13,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:53:13,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1804809499, now seen corresponding path program 1 times [2022-02-10 22:53:13,552 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:53:13,552 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368207096] [2022-02-10 22:53:13,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:53:13,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:53:13,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:53:13,750 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:53:13,750 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:53:13,751 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368207096] [2022-02-10 22:53:13,751 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368207096] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:53:13,751 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196870230] [2022-02-10 22:53:13,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:53:13,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:53:13,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:53:13,752 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:53:13,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-10 22:53:13,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:53:13,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 22:53:13,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:53:14,120 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:53:14,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:53:14,584 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:53:14,585 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196870230] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:53:14,585 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:53:14,585 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 18 [2022-02-10 22:53:14,585 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549635465] [2022-02-10 22:53:14,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:53:14,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-10 22:53:14,586 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:53:14,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-10 22:53:14,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2022-02-10 22:53:14,586 INFO L87 Difference]: Start difference. First operand 401 states and 972 transitions. Second operand has 18 states, 18 states have (on average 7.444444444444445) internal successors, (134), 18 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:53:15,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:53:15,564 INFO L93 Difference]: Finished difference Result 2203 states and 5648 transitions. [2022-02-10 22:53:15,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-02-10 22:53:15,566 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 7.444444444444445) internal successors, (134), 18 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-02-10 22:53:15,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:53:15,574 INFO L225 Difference]: With dead ends: 2203 [2022-02-10 22:53:15,574 INFO L226 Difference]: Without dead ends: 1933 [2022-02-10 22:53:15,575 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 122 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=431, Invalid=1051, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 22:53:15,575 INFO L934 BasicCegarLoop]: 142 mSDtfsCounter, 584 mSDsluCounter, 1255 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 1302 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:53:15,576 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [584 Valid, 1302 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:53:15,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1933 states. [2022-02-10 22:53:15,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1933 to 702. [2022-02-10 22:53:15,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 701 states have (on average 2.637660485021398) internal successors, (1849), 701 states have internal predecessors, (1849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:53:15,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 1849 transitions. [2022-02-10 22:53:15,604 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 1849 transitions. Word has length 67 [2022-02-10 22:53:15,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:53:15,605 INFO L470 AbstractCegarLoop]: Abstraction has 702 states and 1849 transitions. [2022-02-10 22:53:15,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.444444444444445) internal successors, (134), 18 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:53:15,605 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 1849 transitions. [2022-02-10 22:53:15,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-02-10 22:53:15,608 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:53:15,608 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:53:15,627 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-02-10 22:53:15,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:53:15,825 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:53:15,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:53:15,826 INFO L85 PathProgramCache]: Analyzing trace with hash -2075173441, now seen corresponding path program 2 times [2022-02-10 22:53:15,826 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:53:15,827 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128904343] [2022-02-10 22:53:15,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:53:15,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:53:15,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:53:15,963 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:53:15,964 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:53:15,964 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128904343] [2022-02-10 22:53:15,964 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128904343] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:53:15,964 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775797396] [2022-02-10 22:53:15,964 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 22:53:15,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:53:15,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:53:15,965 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:53:15,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-10 22:53:16,013 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 22:53:16,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:53:16,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-10 22:53:16,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:53:16,214 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:53:16,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:53:16,470 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:53:16,470 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775797396] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:53:16,470 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:53:16,471 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 14 [2022-02-10 22:53:16,472 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024342590] [2022-02-10 22:53:16,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:53:16,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-10 22:53:16,473 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:53:16,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-10 22:53:16,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2022-02-10 22:53:16,474 INFO L87 Difference]: Start difference. First operand 702 states and 1849 transitions. Second operand has 14 states, 14 states have (on average 8.857142857142858) internal successors, (124), 14 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:53:16,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:53:16,629 INFO L93 Difference]: Finished difference Result 917 states and 2371 transitions. [2022-02-10 22:53:16,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-10 22:53:16,630 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.857142857142858) internal successors, (124), 14 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-02-10 22:53:16,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:53:16,634 INFO L225 Difference]: With dead ends: 917 [2022-02-10 22:53:16,634 INFO L226 Difference]: Without dead ends: 887 [2022-02-10 22:53:16,635 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 127 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2022-02-10 22:53:16,635 INFO L934 BasicCegarLoop]: 90 mSDtfsCounter, 70 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 674 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 22:53:16,635 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 674 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 22:53:16,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2022-02-10 22:53:16,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 643. [2022-02-10 22:53:16,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 642 states have (on average 2.587227414330218) internal successors, (1661), 642 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:53:16,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 1661 transitions. [2022-02-10 22:53:16,650 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 1661 transitions. Word has length 67 [2022-02-10 22:53:16,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:53:16,651 INFO L470 AbstractCegarLoop]: Abstraction has 643 states and 1661 transitions. [2022-02-10 22:53:16,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.857142857142858) internal successors, (124), 14 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:53:16,651 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 1661 transitions. [2022-02-10 22:53:16,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-02-10 22:53:16,652 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:53:16,652 INFO L515 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] [2022-02-10 22:53:16,677 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-02-10 22:53:16,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:53:16,867 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:53:16,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:53:16,868 INFO L85 PathProgramCache]: Analyzing trace with hash -145870821, now seen corresponding path program 3 times [2022-02-10 22:53:16,868 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:53:16,868 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466938928] [2022-02-10 22:53:16,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:53:16,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:53:16,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:53:17,021 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:53:17,022 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:53:17,022 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466938928] [2022-02-10 22:53:17,022 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466938928] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:53:17,022 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824760998] [2022-02-10 22:53:17,022 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 22:53:17,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:53:17,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:53:17,023 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:53:17,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-02-10 22:53:17,079 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 22:53:17,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:53:17,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 22:53:17,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:53:17,280 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:53:17,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:53:17,578 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:53:17,578 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1824760998] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:53:17,578 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:53:17,578 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 18 [2022-02-10 22:53:17,578 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949836760] [2022-02-10 22:53:17,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:53:17,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-10 22:53:17,579 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:53:17,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-10 22:53:17,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2022-02-10 22:53:17,579 INFO L87 Difference]: Start difference. First operand 643 states and 1661 transitions. Second operand has 18 states, 18 states have (on average 5.166666666666667) internal successors, (93), 18 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:53:17,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:53:17,943 INFO L93 Difference]: Finished difference Result 1092 states and 2851 transitions. [2022-02-10 22:53:17,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 22:53:17,943 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.166666666666667) internal successors, (93), 18 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-02-10 22:53:17,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:53:17,947 INFO L225 Difference]: With dead ends: 1092 [2022-02-10 22:53:17,947 INFO L226 Difference]: Without dead ends: 1092 [2022-02-10 22:53:17,948 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 139 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=213, Invalid=657, Unknown=0, NotChecked=0, Total=870 [2022-02-10 22:53:17,948 INFO L934 BasicCegarLoop]: 137 mSDtfsCounter, 427 mSDsluCounter, 799 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 22:53:17,948 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [427 Valid, 886 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 22:53:17,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1092 states. [2022-02-10 22:53:17,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1092 to 726. [2022-02-10 22:53:17,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 726 states, 725 states have (on average 2.613793103448276) internal successors, (1895), 725 states have internal predecessors, (1895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:53:17,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 726 states to 726 states and 1895 transitions. [2022-02-10 22:53:17,963 INFO L78 Accepts]: Start accepts. Automaton has 726 states and 1895 transitions. Word has length 72 [2022-02-10 22:53:17,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:53:17,963 INFO L470 AbstractCegarLoop]: Abstraction has 726 states and 1895 transitions. [2022-02-10 22:53:17,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.166666666666667) internal successors, (93), 18 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:53:17,963 INFO L276 IsEmpty]: Start isEmpty. Operand 726 states and 1895 transitions. [2022-02-10 22:53:17,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-02-10 22:53:17,964 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:53:17,965 INFO L515 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] [2022-02-10 22:53:17,983 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-02-10 22:53:18,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:53:18,176 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:53:18,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:53:18,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1917541861, now seen corresponding path program 4 times [2022-02-10 22:53:18,176 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:53:18,176 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468862279] [2022-02-10 22:53:18,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:53:18,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:53:18,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:53:18,310 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:53:18,310 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:53:18,310 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468862279] [2022-02-10 22:53:18,310 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468862279] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:53:18,310 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83967144] [2022-02-10 22:53:18,310 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 22:53:18,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:53:18,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:53:18,312 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:53:18,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-02-10 22:53:18,368 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 22:53:18,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:53:18,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 22:53:18,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:53:18,618 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:53:18,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:53:19,224 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:53:19,224 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83967144] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:53:19,224 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:53:19,224 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 20 [2022-02-10 22:53:19,224 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143662087] [2022-02-10 22:53:19,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:53:19,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:53:19,225 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:53:19,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:53:19,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:53:19,225 INFO L87 Difference]: Start difference. First operand 726 states and 1895 transitions. Second operand has 20 states, 20 states have (on average 5.75) internal successors, (115), 20 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:53:20,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:53:20,408 INFO L93 Difference]: Finished difference Result 2030 states and 5196 transitions. [2022-02-10 22:53:20,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-10 22:53:20,411 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.75) internal successors, (115), 20 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-02-10 22:53:20,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:53:20,418 INFO L225 Difference]: With dead ends: 2030 [2022-02-10 22:53:20,418 INFO L226 Difference]: Without dead ends: 2030 [2022-02-10 22:53:20,419 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 589 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=507, Invalid=1655, Unknown=0, NotChecked=0, Total=2162 [2022-02-10 22:53:20,419 INFO L934 BasicCegarLoop]: 157 mSDtfsCounter, 569 mSDsluCounter, 1067 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 1148 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:53:20,420 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [569 Valid, 1148 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:53:20,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2030 states. [2022-02-10 22:53:20,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2030 to 742. [2022-02-10 22:53:20,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 742 states, 741 states have (on average 2.6167341430499325) internal successors, (1939), 741 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:53:20,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 1939 transitions. [2022-02-10 22:53:20,446 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 1939 transitions. Word has length 72 [2022-02-10 22:53:20,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:53:20,447 INFO L470 AbstractCegarLoop]: Abstraction has 742 states and 1939 transitions. [2022-02-10 22:53:20,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.75) internal successors, (115), 20 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:53:20,447 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 1939 transitions. [2022-02-10 22:53:20,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-02-10 22:53:20,448 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:53:20,449 INFO L515 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] [2022-02-10 22:53:20,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-02-10 22:53:20,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:53:20,662 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:53:20,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:53:20,663 INFO L85 PathProgramCache]: Analyzing trace with hash -899018853, now seen corresponding path program 5 times [2022-02-10 22:53:20,663 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:53:20,663 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234606458] [2022-02-10 22:53:20,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:53:20,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:53:20,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:53:20,869 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:53:20,870 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:53:20,870 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234606458] [2022-02-10 22:53:20,870 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234606458] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:53:20,870 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066637251] [2022-02-10 22:53:20,870 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 22:53:20,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:53:20,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:53:20,871 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:53:20,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-02-10 22:53:20,921 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 22:53:20,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:53:20,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 22:53:20,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:53:21,119 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:53:21,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:54:00,400 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:54:00,401 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066637251] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:54:00,401 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:54:00,401 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2022-02-10 22:54:00,401 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990045082] [2022-02-10 22:54:00,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:54:00,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:54:00,401 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:54:00,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:54:00,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:54:00,402 INFO L87 Difference]: Start difference. First operand 742 states and 1939 transitions. Second operand has 21 states, 21 states have (on average 5.619047619047619) internal successors, (118), 21 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:54:05,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:54:05,904 INFO L93 Difference]: Finished difference Result 1870 states and 4875 transitions. [2022-02-10 22:54:05,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-02-10 22:54:05,904 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.619047619047619) internal successors, (118), 21 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-02-10 22:54:05,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:54:05,911 INFO L225 Difference]: With dead ends: 1870 [2022-02-10 22:54:05,911 INFO L226 Difference]: Without dead ends: 1870 [2022-02-10 22:54:05,913 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2266 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=1326, Invalid=5480, Unknown=0, NotChecked=0, Total=6806 [2022-02-10 22:54:05,913 INFO L934 BasicCegarLoop]: 155 mSDtfsCounter, 605 mSDsluCounter, 1662 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 605 SdHoareTripleChecker+Valid, 1736 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-10 22:54:05,913 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [605 Valid, 1736 Invalid, 721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-10 22:54:05,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1870 states. [2022-02-10 22:54:05,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1870 to 750. [2022-02-10 22:54:05,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 750 states, 749 states have (on average 2.628838451268358) internal successors, (1969), 749 states have internal predecessors, (1969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:54:05,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 1969 transitions. [2022-02-10 22:54:05,932 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 1969 transitions. Word has length 72 [2022-02-10 22:54:05,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:54:05,933 INFO L470 AbstractCegarLoop]: Abstraction has 750 states and 1969 transitions. [2022-02-10 22:54:05,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.619047619047619) internal successors, (118), 21 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:54:05,933 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 1969 transitions. [2022-02-10 22:54:05,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-02-10 22:54:05,934 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:54:05,934 INFO L515 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] [2022-02-10 22:54:05,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-02-10 22:54:06,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:54:06,147 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:54:06,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:54:06,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1016371871, now seen corresponding path program 6 times [2022-02-10 22:54:06,148 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:54:06,148 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288317459] [2022-02-10 22:54:06,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:54:06,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:54:06,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:54:06,290 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:54:06,290 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:54:06,290 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288317459] [2022-02-10 22:54:06,290 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288317459] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:54:06,290 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953135747] [2022-02-10 22:54:06,290 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 22:54:06,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:54:06,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:54:06,297 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:54:06,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-02-10 22:54:06,371 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-10 22:54:06,371 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:54:06,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 22:54:06,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:54:06,577 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:54:06,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:54:07,133 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:54:07,133 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953135747] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:54:07,133 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:54:07,133 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 18 [2022-02-10 22:54:07,133 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218952475] [2022-02-10 22:54:07,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:54:07,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-10 22:54:07,134 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:54:07,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-10 22:54:07,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2022-02-10 22:54:07,134 INFO L87 Difference]: Start difference. First operand 750 states and 1969 transitions. Second operand has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:54:09,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:54:09,243 INFO L93 Difference]: Finished difference Result 1558 states and 4102 transitions. [2022-02-10 22:54:09,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-02-10 22:54:09,244 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-02-10 22:54:09,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:54:09,249 INFO L225 Difference]: With dead ends: 1558 [2022-02-10 22:54:09,249 INFO L226 Difference]: Without dead ends: 1510 [2022-02-10 22:54:09,250 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 140 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 967 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=643, Invalid=2437, Unknown=0, NotChecked=0, Total=3080 [2022-02-10 22:54:09,250 INFO L934 BasicCegarLoop]: 135 mSDtfsCounter, 580 mSDsluCounter, 979 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 580 SdHoareTripleChecker+Valid, 1065 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:54:09,251 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [580 Valid, 1065 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:54:09,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1510 states. [2022-02-10 22:54:09,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1510 to 942. [2022-02-10 22:54:09,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 941 states have (on average 2.6790648246546227) internal successors, (2521), 941 states have internal predecessors, (2521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:54:09,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 2521 transitions. [2022-02-10 22:54:09,271 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 2521 transitions. Word has length 72 [2022-02-10 22:54:09,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:54:09,271 INFO L470 AbstractCegarLoop]: Abstraction has 942 states and 2521 transitions. [2022-02-10 22:54:09,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:54:09,271 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 2521 transitions. [2022-02-10 22:54:09,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-02-10 22:54:09,273 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:54:09,273 INFO L515 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] [2022-02-10 22:54:09,309 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-02-10 22:54:09,494 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,SelfDestructingSolverStorable9 [2022-02-10 22:54:09,494 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:54:09,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:54:09,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1259204635, now seen corresponding path program 7 times [2022-02-10 22:54:09,494 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:54:09,494 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128120339] [2022-02-10 22:54:09,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:54:09,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:54:09,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:54:09,622 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:54:09,622 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:54:09,623 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128120339] [2022-02-10 22:54:09,623 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128120339] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:54:09,623 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391146919] [2022-02-10 22:54:09,623 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 22:54:09,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:54:09,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:54:09,644 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:54:09,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-02-10 22:54:09,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:54:09,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 22:54:09,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:54:09,890 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:54:09,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:54:10,214 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:54:10,214 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391146919] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:54:10,214 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:54:10,214 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 11] total 22 [2022-02-10 22:54:10,215 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440099866] [2022-02-10 22:54:10,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:54:10,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 22:54:10,215 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:54:10,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 22:54:10,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2022-02-10 22:54:10,216 INFO L87 Difference]: Start difference. First operand 942 states and 2521 transitions. Second operand has 22 states, 22 states have (on average 5.7272727272727275) internal successors, (126), 22 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:54:11,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:54:11,997 INFO L93 Difference]: Finished difference Result 1966 states and 5300 transitions. [2022-02-10 22:54:11,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-02-10 22:54:11,998 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.7272727272727275) internal successors, (126), 22 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-02-10 22:54:11,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:54:12,004 INFO L225 Difference]: With dead ends: 1966 [2022-02-10 22:54:12,005 INFO L226 Difference]: Without dead ends: 1966 [2022-02-10 22:54:12,006 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1356 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=702, Invalid=4128, Unknown=0, NotChecked=0, Total=4830 [2022-02-10 22:54:12,006 INFO L934 BasicCegarLoop]: 136 mSDtfsCounter, 433 mSDsluCounter, 1712 mSDsCounter, 0 mSdLazyCounter, 830 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 1741 SdHoareTripleChecker+Invalid, 896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 22:54:12,006 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [433 Valid, 1741 Invalid, 896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 830 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 22:54:12,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1966 states. [2022-02-10 22:54:12,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1966 to 966. [2022-02-10 22:54:12,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 966 states, 965 states have (on average 2.6808290155440413) internal successors, (2587), 965 states have internal predecessors, (2587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:54:12,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 2587 transitions. [2022-02-10 22:54:12,029 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 2587 transitions. Word has length 72 [2022-02-10 22:54:12,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:54:12,029 INFO L470 AbstractCegarLoop]: Abstraction has 966 states and 2587 transitions. [2022-02-10 22:54:12,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.7272727272727275) internal successors, (126), 22 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:54:12,029 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 2587 transitions. [2022-02-10 22:54:12,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-02-10 22:54:12,031 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:54:12,031 INFO L515 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] [2022-02-10 22:54:12,055 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-02-10 22:54:12,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:54:12,237 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:54:12,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:54:12,237 INFO L85 PathProgramCache]: Analyzing trace with hash -2017239653, now seen corresponding path program 8 times [2022-02-10 22:54:12,237 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:54:12,237 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444085059] [2022-02-10 22:54:12,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:54:12,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:54:12,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:54:12,355 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:54:12,355 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:54:12,355 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444085059] [2022-02-10 22:54:12,355 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444085059] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:54:12,355 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931645223] [2022-02-10 22:54:12,355 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 22:54:12,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:54:12,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:54:12,356 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:54:12,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-02-10 22:54:12,400 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 22:54:12,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:54:12,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 22:54:12,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:54:12,624 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:54:12,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:54:13,021 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:54:13,021 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931645223] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:54:13,021 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:54:13,022 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 17 [2022-02-10 22:54:13,022 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631643695] [2022-02-10 22:54:13,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:54:13,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-10 22:54:13,022 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:54:13,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-10 22:54:13,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2022-02-10 22:54:13,023 INFO L87 Difference]: Start difference. First operand 966 states and 2587 transitions. Second operand has 17 states, 17 states have (on average 6.0) internal successors, (102), 17 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:54:16,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:54:16,319 INFO L93 Difference]: Finished difference Result 2834 states and 7474 transitions. [2022-02-10 22:54:16,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-02-10 22:54:16,320 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.0) internal successors, (102), 17 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-02-10 22:54:16,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:54:16,328 INFO L225 Difference]: With dead ends: 2834 [2022-02-10 22:54:16,328 INFO L226 Difference]: Without dead ends: 2834 [2022-02-10 22:54:16,329 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 139 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1616 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1010, Invalid=3820, Unknown=0, NotChecked=0, Total=4830 [2022-02-10 22:54:16,330 INFO L934 BasicCegarLoop]: 169 mSDtfsCounter, 567 mSDsluCounter, 1400 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 567 SdHoareTripleChecker+Valid, 1462 SdHoareTripleChecker+Invalid, 640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 22:54:16,330 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [567 Valid, 1462 Invalid, 640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 22:54:16,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2834 states. [2022-02-10 22:54:16,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2834 to 1078. [2022-02-10 22:54:16,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1078 states, 1077 states have (on average 2.725162488393686) internal successors, (2935), 1077 states have internal predecessors, (2935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:54:16,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1078 states to 1078 states and 2935 transitions. [2022-02-10 22:54:16,360 INFO L78 Accepts]: Start accepts. Automaton has 1078 states and 2935 transitions. Word has length 72 [2022-02-10 22:54:16,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:54:16,360 INFO L470 AbstractCegarLoop]: Abstraction has 1078 states and 2935 transitions. [2022-02-10 22:54:16,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.0) internal successors, (102), 17 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:54:16,361 INFO L276 IsEmpty]: Start isEmpty. Operand 1078 states and 2935 transitions. [2022-02-10 22:54:16,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-02-10 22:54:16,362 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:54:16,363 INFO L515 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] [2022-02-10 22:54:16,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-02-10 22:54:16,579 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,SelfDestructingSolverStorable11 [2022-02-10 22:54:16,580 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:54:16,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:54:16,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1902016859, now seen corresponding path program 9 times [2022-02-10 22:54:16,580 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:54:16,580 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595427490] [2022-02-10 22:54:16,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:54:16,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:54:16,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:54:16,745 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:54:16,746 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:54:16,746 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595427490] [2022-02-10 22:54:16,746 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595427490] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:54:16,746 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782777736] [2022-02-10 22:54:16,746 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 22:54:16,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:54:16,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:54:16,747 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:54:16,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-02-10 22:54:16,798 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 22:54:16,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:54:16,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 22:54:16,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:54:17,038 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:54:17,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:54:17,511 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:54:17,511 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782777736] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:54:17,511 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:54:17,511 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 18 [2022-02-10 22:54:17,511 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234698352] [2022-02-10 22:54:17,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:54:17,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-10 22:54:17,512 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:54:17,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-10 22:54:17,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2022-02-10 22:54:17,512 INFO L87 Difference]: Start difference. First operand 1078 states and 2935 transitions. Second operand has 18 states, 18 states have (on average 6.055555555555555) internal successors, (109), 18 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:54:19,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:54:19,788 INFO L93 Difference]: Finished difference Result 3042 states and 8046 transitions. [2022-02-10 22:54:19,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-02-10 22:54:19,788 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.055555555555555) internal successors, (109), 18 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-02-10 22:54:19,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:54:19,799 INFO L225 Difference]: With dead ends: 3042 [2022-02-10 22:54:19,799 INFO L226 Difference]: Without dead ends: 3042 [2022-02-10 22:54:19,800 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1968 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1181, Invalid=4519, Unknown=0, NotChecked=0, Total=5700 [2022-02-10 22:54:19,800 INFO L934 BasicCegarLoop]: 143 mSDtfsCounter, 672 mSDsluCounter, 1166 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 672 SdHoareTripleChecker+Valid, 1235 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 22:54:19,801 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [672 Valid, 1235 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 22:54:19,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3042 states. [2022-02-10 22:54:19,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3042 to 1182. [2022-02-10 22:54:19,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1182 states, 1181 states have (on average 2.754445385266723) internal successors, (3253), 1181 states have internal predecessors, (3253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:54:19,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1182 states to 1182 states and 3253 transitions. [2022-02-10 22:54:19,826 INFO L78 Accepts]: Start accepts. Automaton has 1182 states and 3253 transitions. Word has length 72 [2022-02-10 22:54:19,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:54:19,827 INFO L470 AbstractCegarLoop]: Abstraction has 1182 states and 3253 transitions. [2022-02-10 22:54:19,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.055555555555555) internal successors, (109), 18 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:54:19,827 INFO L276 IsEmpty]: Start isEmpty. Operand 1182 states and 3253 transitions. [2022-02-10 22:54:19,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-02-10 22:54:19,829 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:54:19,829 INFO L515 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] [2022-02-10 22:54:19,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-02-10 22:54:20,040 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,SelfDestructingSolverStorable12 [2022-02-10 22:54:20,040 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:54:20,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:54:20,040 INFO L85 PathProgramCache]: Analyzing trace with hash -477559713, now seen corresponding path program 10 times [2022-02-10 22:54:20,041 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:54:20,041 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026322947] [2022-02-10 22:54:20,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:54:20,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:54:20,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:54:20,138 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:54:20,139 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:54:20,139 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026322947] [2022-02-10 22:54:20,139 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026322947] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:54:20,139 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487731305] [2022-02-10 22:54:20,139 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 22:54:20,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:54:20,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:54:20,140 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:54:20,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-02-10 22:54:20,190 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 22:54:20,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:54:20,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 22:54:20,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:54:20,408 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:54:20,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:54:20,927 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:54:20,927 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487731305] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:54:20,927 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:54:20,928 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 19 [2022-02-10 22:54:20,928 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966601981] [2022-02-10 22:54:20,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:54:20,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 22:54:20,928 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:54:20,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 22:54:20,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2022-02-10 22:54:20,929 INFO L87 Difference]: Start difference. First operand 1182 states and 3253 transitions. Second operand has 19 states, 19 states have (on average 5.578947368421052) internal successors, (106), 19 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:54:22,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:54:22,876 INFO L93 Difference]: Finished difference Result 1947 states and 5342 transitions. [2022-02-10 22:54:22,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-02-10 22:54:22,877 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.578947368421052) internal successors, (106), 19 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-02-10 22:54:22,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:54:22,881 INFO L225 Difference]: With dead ends: 1947 [2022-02-10 22:54:22,881 INFO L226 Difference]: Without dead ends: 1899 [2022-02-10 22:54:22,882 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 138 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1016 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=692, Invalid=2500, Unknown=0, NotChecked=0, Total=3192 [2022-02-10 22:54:22,882 INFO L934 BasicCegarLoop]: 122 mSDtfsCounter, 426 mSDsluCounter, 1140 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 1220 SdHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:54:22,882 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [426 Valid, 1220 Invalid, 535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:54:22,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1899 states. [2022-02-10 22:54:22,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1899 to 1234. [2022-02-10 22:54:22,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1234 states, 1233 states have (on average 2.7607461476074615) internal successors, (3404), 1233 states have internal predecessors, (3404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:54:22,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 3404 transitions. [2022-02-10 22:54:22,905 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 3404 transitions. Word has length 72 [2022-02-10 22:54:22,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:54:22,905 INFO L470 AbstractCegarLoop]: Abstraction has 1234 states and 3404 transitions. [2022-02-10 22:54:22,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.578947368421052) internal successors, (106), 19 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:54:22,905 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 3404 transitions. [2022-02-10 22:54:22,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-02-10 22:54:22,907 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:54:22,907 INFO L515 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] [2022-02-10 22:54:22,926 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-02-10 22:54:23,123 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,SelfDestructingSolverStorable13 [2022-02-10 22:54:23,123 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:54:23,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:54:23,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1924749117, now seen corresponding path program 11 times [2022-02-10 22:54:23,124 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:54:23,124 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216865811] [2022-02-10 22:54:23,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:54:23,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:54:23,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:54:23,228 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:54:23,229 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:54:23,229 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216865811] [2022-02-10 22:54:23,229 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216865811] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:54:23,229 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955150624] [2022-02-10 22:54:23,229 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 22:54:23,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:54:23,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:54:23,230 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:54:23,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-02-10 22:54:23,270 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 22:54:23,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:54:23,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-10 22:54:23,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:54:23,469 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:54:23,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:54:23,783 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:54:23,783 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955150624] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:54:23,783 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:54:23,783 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 20 [2022-02-10 22:54:23,783 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763759692] [2022-02-10 22:54:23,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:54:23,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:54:23,783 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:54:23,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:54:23,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:54:23,784 INFO L87 Difference]: Start difference. First operand 1234 states and 3404 transitions. Second operand has 20 states, 20 states have (on average 5.25) internal successors, (105), 20 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:54:24,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:54:24,930 INFO L93 Difference]: Finished difference Result 1825 states and 4913 transitions. [2022-02-10 22:54:24,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-10 22:54:24,930 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.25) internal successors, (105), 20 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-02-10 22:54:24,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:54:24,934 INFO L225 Difference]: With dead ends: 1825 [2022-02-10 22:54:24,934 INFO L226 Difference]: Without dead ends: 1789 [2022-02-10 22:54:24,935 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 763 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=540, Invalid=2322, Unknown=0, NotChecked=0, Total=2862 [2022-02-10 22:54:24,936 INFO L934 BasicCegarLoop]: 124 mSDtfsCounter, 486 mSDsluCounter, 1116 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 1182 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:54:24,936 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [486 Valid, 1182 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:54:24,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1789 states. [2022-02-10 22:54:24,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1789 to 1234. [2022-02-10 22:54:24,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1234 states, 1233 states have (on average 2.75750202757502) internal successors, (3400), 1233 states have internal predecessors, (3400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:54:24,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 3400 transitions. [2022-02-10 22:54:24,963 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 3400 transitions. Word has length 72 [2022-02-10 22:54:24,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:54:24,963 INFO L470 AbstractCegarLoop]: Abstraction has 1234 states and 3400 transitions. [2022-02-10 22:54:24,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.25) internal successors, (105), 20 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:54:24,963 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 3400 transitions. [2022-02-10 22:54:24,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-02-10 22:54:24,965 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:54:24,965 INFO L515 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] [2022-02-10 22:54:24,984 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-02-10 22:54:25,181 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,SelfDestructingSolverStorable14 [2022-02-10 22:54:25,182 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:54:25,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:54:25,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1528466691, now seen corresponding path program 12 times [2022-02-10 22:54:25,182 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:54:25,182 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058670670] [2022-02-10 22:54:25,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:54:25,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:54:25,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:54:25,270 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:54:25,271 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:54:25,271 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058670670] [2022-02-10 22:54:25,271 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058670670] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:54:25,271 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722095164] [2022-02-10 22:54:25,271 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 22:54:25,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:54:25,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:54:25,272 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:54:25,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-02-10 22:54:25,323 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-10 22:54:25,323 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:54:25,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 22:54:25,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:54:25,474 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:54:25,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:54:25,742 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:54:25,743 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722095164] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:54:25,743 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:54:25,743 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 11] total 20 [2022-02-10 22:54:25,743 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87586360] [2022-02-10 22:54:25,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:54:25,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:54:25,743 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:54:25,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:54:25,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:54:25,744 INFO L87 Difference]: Start difference. First operand 1234 states and 3400 transitions. Second operand has 20 states, 20 states have (on average 5.85) internal successors, (117), 20 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:54:28,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:54:28,455 INFO L93 Difference]: Finished difference Result 3500 states and 9395 transitions. [2022-02-10 22:54:28,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-02-10 22:54:28,455 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.85) internal successors, (117), 20 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-02-10 22:54:28,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:54:28,463 INFO L225 Difference]: With dead ends: 3500 [2022-02-10 22:54:28,463 INFO L226 Difference]: Without dead ends: 3398 [2022-02-10 22:54:28,464 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1888 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=883, Invalid=5437, Unknown=0, NotChecked=0, Total=6320 [2022-02-10 22:54:28,465 INFO L934 BasicCegarLoop]: 193 mSDtfsCounter, 423 mSDsluCounter, 2093 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 2139 SdHoareTripleChecker+Invalid, 1180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-10 22:54:28,465 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [423 Valid, 2139 Invalid, 1180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1132 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-10 22:54:28,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3398 states. [2022-02-10 22:54:28,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3398 to 1538. [2022-02-10 22:54:28,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1538 states, 1537 states have (on average 2.810670136629798) internal successors, (4320), 1537 states have internal predecessors, (4320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:54:28,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1538 states to 1538 states and 4320 transitions. [2022-02-10 22:54:28,507 INFO L78 Accepts]: Start accepts. Automaton has 1538 states and 4320 transitions. Word has length 72 [2022-02-10 22:54:28,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:54:28,508 INFO L470 AbstractCegarLoop]: Abstraction has 1538 states and 4320 transitions. [2022-02-10 22:54:28,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.85) internal successors, (117), 20 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:54:28,508 INFO L276 IsEmpty]: Start isEmpty. Operand 1538 states and 4320 transitions. [2022-02-10 22:54:28,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-02-10 22:54:28,511 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:54:28,511 INFO L515 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] [2022-02-10 22:54:28,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-02-10 22:54:28,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:54:28,726 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:54:28,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:54:28,727 INFO L85 PathProgramCache]: Analyzing trace with hash -208297657, now seen corresponding path program 13 times [2022-02-10 22:54:28,727 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:54:28,727 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192461754] [2022-02-10 22:54:28,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:54:28,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:54:28,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:54:28,851 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:54:28,851 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:54:28,851 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192461754] [2022-02-10 22:54:28,851 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192461754] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:54:28,851 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290725909] [2022-02-10 22:54:28,851 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 22:54:28,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:54:28,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:54:28,852 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:54:28,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-02-10 22:54:28,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:54:28,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 22:54:28,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:54:29,114 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:54:29,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:54:29,689 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:54:29,689 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290725909] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:54:29,689 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:54:29,690 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 19 [2022-02-10 22:54:29,690 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375587838] [2022-02-10 22:54:29,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:54:29,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 22:54:29,690 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:54:29,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 22:54:29,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2022-02-10 22:54:29,691 INFO L87 Difference]: Start difference. First operand 1538 states and 4320 transitions. Second operand has 19 states, 19 states have (on average 5.578947368421052) internal successors, (106), 19 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:54:30,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:54:30,865 INFO L93 Difference]: Finished difference Result 2407 states and 6727 transitions. [2022-02-10 22:54:30,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-10 22:54:30,866 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.578947368421052) internal successors, (106), 19 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-02-10 22:54:30,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:54:30,879 INFO L225 Difference]: With dead ends: 2407 [2022-02-10 22:54:30,879 INFO L226 Difference]: Without dead ends: 2359 [2022-02-10 22:54:30,879 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=416, Invalid=1476, Unknown=0, NotChecked=0, Total=1892 [2022-02-10 22:54:30,880 INFO L934 BasicCegarLoop]: 115 mSDtfsCounter, 326 mSDsluCounter, 1262 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 1330 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:54:30,880 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [326 Valid, 1330 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:54:30,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2359 states. [2022-02-10 22:54:30,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2359 to 1490. [2022-02-10 22:54:30,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1490 states, 1489 states have (on average 2.80456682337139) internal successors, (4176), 1489 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:54:30,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1490 states to 1490 states and 4176 transitions. [2022-02-10 22:54:30,906 INFO L78 Accepts]: Start accepts. Automaton has 1490 states and 4176 transitions. Word has length 72 [2022-02-10 22:54:30,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:54:30,906 INFO L470 AbstractCegarLoop]: Abstraction has 1490 states and 4176 transitions. [2022-02-10 22:54:30,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.578947368421052) internal successors, (106), 19 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:54:30,906 INFO L276 IsEmpty]: Start isEmpty. Operand 1490 states and 4176 transitions. [2022-02-10 22:54:30,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-02-10 22:54:30,908 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:54:30,908 INFO L515 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] [2022-02-10 22:54:30,929 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-02-10 22:54:31,123 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,SelfDestructingSolverStorable16 [2022-02-10 22:54:31,123 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:54:31,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:54:31,124 INFO L85 PathProgramCache]: Analyzing trace with hash -2100956123, now seen corresponding path program 14 times [2022-02-10 22:54:31,124 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:54:31,124 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295438877] [2022-02-10 22:54:31,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:54:31,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:54:31,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:54:31,225 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:54:31,225 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:54:31,225 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295438877] [2022-02-10 22:54:31,225 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295438877] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:54:31,225 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317363544] [2022-02-10 22:54:31,225 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 22:54:31,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:54:31,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:54:31,226 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:54:31,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-02-10 22:54:31,280 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 22:54:31,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:54:31,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 22:54:31,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:54:31,519 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:54:31,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:54:32,089 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:54:32,090 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317363544] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:54:32,090 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:54:32,090 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 17 [2022-02-10 22:54:32,090 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518759051] [2022-02-10 22:54:32,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:54:32,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-10 22:54:32,090 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:54:32,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-10 22:54:32,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2022-02-10 22:54:32,091 INFO L87 Difference]: Start difference. First operand 1490 states and 4176 transitions. Second operand has 17 states, 17 states have (on average 5.470588235294118) internal successors, (93), 17 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:54:33,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:54:33,366 INFO L93 Difference]: Finished difference Result 2267 states and 6290 transitions. [2022-02-10 22:54:33,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-02-10 22:54:33,366 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.470588235294118) internal successors, (93), 17 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-02-10 22:54:33,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:54:33,370 INFO L225 Difference]: With dead ends: 2267 [2022-02-10 22:54:33,371 INFO L226 Difference]: Without dead ends: 2183 [2022-02-10 22:54:33,371 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 136 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=293, Invalid=1039, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 22:54:33,372 INFO L934 BasicCegarLoop]: 114 mSDtfsCounter, 268 mSDsluCounter, 973 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 1049 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 22:54:33,372 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [268 Valid, 1049 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-10 22:54:33,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2183 states. [2022-02-10 22:54:33,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2183 to 1558. [2022-02-10 22:54:33,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1558 states, 1557 states have (on average 2.7996146435452793) internal successors, (4359), 1557 states have internal predecessors, (4359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:54:33,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1558 states to 1558 states and 4359 transitions. [2022-02-10 22:54:33,416 INFO L78 Accepts]: Start accepts. Automaton has 1558 states and 4359 transitions. Word has length 72 [2022-02-10 22:54:33,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:54:33,416 INFO L470 AbstractCegarLoop]: Abstraction has 1558 states and 4359 transitions. [2022-02-10 22:54:33,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.470588235294118) internal successors, (93), 17 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:54:33,416 INFO L276 IsEmpty]: Start isEmpty. Operand 1558 states and 4359 transitions. [2022-02-10 22:54:33,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-02-10 22:54:33,419 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:54:33,419 INFO L515 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] [2022-02-10 22:54:33,445 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-02-10 22:54:33,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-02-10 22:54:33,635 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:54:33,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:54:33,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1872496129, now seen corresponding path program 15 times [2022-02-10 22:54:33,636 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:54:33,636 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755520439] [2022-02-10 22:54:33,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:54:33,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:54:33,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:54:33,833 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:54:33,833 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:54:33,833 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755520439] [2022-02-10 22:54:33,833 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755520439] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:54:33,833 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603890925] [2022-02-10 22:54:33,833 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 22:54:33,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:54:33,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:54:33,835 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:54:33,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-02-10 22:54:33,888 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 22:54:33,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:54:33,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 22:54:33,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:54:34,155 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:54:34,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:54:34,625 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:54:34,625 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603890925] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:54:34,625 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:54:34,626 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 21 [2022-02-10 22:54:34,626 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743593167] [2022-02-10 22:54:34,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:54:34,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:54:34,626 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:54:34,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:54:34,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:54:34,627 INFO L87 Difference]: Start difference. First operand 1558 states and 4359 transitions. Second operand has 21 states, 21 states have (on average 5.761904761904762) internal successors, (121), 21 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:54:35,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:54:35,541 INFO L93 Difference]: Finished difference Result 3244 states and 8812 transitions. [2022-02-10 22:54:35,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-02-10 22:54:35,543 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.761904761904762) internal successors, (121), 21 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-02-10 22:54:35,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:54:35,550 INFO L225 Difference]: With dead ends: 3244 [2022-02-10 22:54:35,550 INFO L226 Difference]: Without dead ends: 3244 [2022-02-10 22:54:35,551 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=475, Invalid=1417, Unknown=0, NotChecked=0, Total=1892 [2022-02-10 22:54:35,551 INFO L934 BasicCegarLoop]: 133 mSDtfsCounter, 460 mSDsluCounter, 1265 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 1317 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:54:35,551 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [460 Valid, 1317 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:54:35,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3244 states. [2022-02-10 22:54:35,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3244 to 1758. [2022-02-10 22:54:35,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1758 states, 1757 states have (on average 2.844052361980649) internal successors, (4997), 1757 states have internal predecessors, (4997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:54:35,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1758 states to 1758 states and 4997 transitions. [2022-02-10 22:54:35,584 INFO L78 Accepts]: Start accepts. Automaton has 1758 states and 4997 transitions. Word has length 72 [2022-02-10 22:54:35,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:54:35,584 INFO L470 AbstractCegarLoop]: Abstraction has 1758 states and 4997 transitions. [2022-02-10 22:54:35,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.761904761904762) internal successors, (121), 21 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:54:35,584 INFO L276 IsEmpty]: Start isEmpty. Operand 1758 states and 4997 transitions. [2022-02-10 22:54:35,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-02-10 22:54:35,587 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:54:35,587 INFO L515 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] [2022-02-10 22:54:35,609 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-02-10 22:54:35,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:54:35,804 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:54:35,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:54:35,804 INFO L85 PathProgramCache]: Analyzing trace with hash 42894595, now seen corresponding path program 16 times [2022-02-10 22:54:35,804 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:54:35,804 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912819273] [2022-02-10 22:54:35,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:54:35,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:54:35,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:54:35,954 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:54:35,954 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:54:35,954 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912819273] [2022-02-10 22:54:35,954 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912819273] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:54:35,954 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687453650] [2022-02-10 22:54:35,954 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 22:54:35,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:54:35,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:54:35,956 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:54:35,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-02-10 22:54:36,019 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 22:54:36,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:54:36,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 22:54:36,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:54:36,250 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:54:36,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:54:36,767 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:54:36,767 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687453650] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:54:36,767 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:54:36,767 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 18 [2022-02-10 22:54:36,767 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056306449] [2022-02-10 22:54:36,767 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:54:36,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-10 22:54:36,768 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:54:36,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-10 22:54:36,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2022-02-10 22:54:36,768 INFO L87 Difference]: Start difference. First operand 1758 states and 4997 transitions. Second operand has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:54:38,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:54:38,246 INFO L93 Difference]: Finished difference Result 2841 states and 7943 transitions. [2022-02-10 22:54:38,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-02-10 22:54:38,246 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-02-10 22:54:38,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:54:38,251 INFO L225 Difference]: With dead ends: 2841 [2022-02-10 22:54:38,251 INFO L226 Difference]: Without dead ends: 2793 [2022-02-10 22:54:38,252 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 135 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 730 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=518, Invalid=1834, Unknown=0, NotChecked=0, Total=2352 [2022-02-10 22:54:38,253 INFO L934 BasicCegarLoop]: 115 mSDtfsCounter, 386 mSDsluCounter, 1154 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 1230 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 22:54:38,253 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [386 Valid, 1230 Invalid, 558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 22:54:38,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2793 states. [2022-02-10 22:54:38,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2793 to 1778. [2022-02-10 22:54:38,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1778 states, 1777 states have (on average 2.831738885762521) internal successors, (5032), 1777 states have internal predecessors, (5032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:54:38,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1778 states to 1778 states and 5032 transitions. [2022-02-10 22:54:38,293 INFO L78 Accepts]: Start accepts. Automaton has 1778 states and 5032 transitions. Word has length 72 [2022-02-10 22:54:38,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:54:38,294 INFO L470 AbstractCegarLoop]: Abstraction has 1778 states and 5032 transitions. [2022-02-10 22:54:38,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:54:38,294 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states and 5032 transitions. [2022-02-10 22:54:38,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-02-10 22:54:38,297 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:54:38,297 INFO L515 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] [2022-02-10 22:54:38,334 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-02-10 22:54:38,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:54:38,511 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:54:38,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:54:38,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1849763871, now seen corresponding path program 17 times [2022-02-10 22:54:38,512 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:54:38,512 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426752677] [2022-02-10 22:54:38,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:54:38,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:54:38,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:54:38,615 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:54:38,615 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:54:38,615 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426752677] [2022-02-10 22:54:38,615 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426752677] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:54:38,615 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824026045] [2022-02-10 22:54:38,616 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 22:54:38,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:54:38,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:54:38,617 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:54:38,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-02-10 22:54:38,690 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 22:54:38,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:54:38,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-10 22:54:38,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:54:38,886 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:54:38,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:54:39,219 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:54:39,220 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824026045] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:54:39,220 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:54:39,220 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 20 [2022-02-10 22:54:39,220 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147377923] [2022-02-10 22:54:39,220 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:54:39,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:54:39,220 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:54:39,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:54:39,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:54:39,221 INFO L87 Difference]: Start difference. First operand 1778 states and 5032 transitions. Second operand has 20 states, 20 states have (on average 5.25) internal successors, (105), 20 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:54:41,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:54:41,126 INFO L93 Difference]: Finished difference Result 3643 states and 10012 transitions. [2022-02-10 22:54:41,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-02-10 22:54:41,126 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.25) internal successors, (105), 20 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-02-10 22:54:41,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:54:41,133 INFO L225 Difference]: With dead ends: 3643 [2022-02-10 22:54:41,133 INFO L226 Difference]: Without dead ends: 3571 [2022-02-10 22:54:41,134 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1056 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=699, Invalid=3083, Unknown=0, NotChecked=0, Total=3782 [2022-02-10 22:54:41,134 INFO L934 BasicCegarLoop]: 146 mSDtfsCounter, 497 mSDsluCounter, 1522 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 1578 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:54:41,134 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [497 Valid, 1578 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 552 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:54:41,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3571 states. [2022-02-10 22:54:41,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3571 to 1922. [2022-02-10 22:54:41,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1922 states, 1921 states have (on average 2.8485163977095262) internal successors, (5472), 1921 states have internal predecessors, (5472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:54:41,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1922 states to 1922 states and 5472 transitions. [2022-02-10 22:54:41,176 INFO L78 Accepts]: Start accepts. Automaton has 1922 states and 5472 transitions. Word has length 72 [2022-02-10 22:54:41,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:54:41,176 INFO L470 AbstractCegarLoop]: Abstraction has 1922 states and 5472 transitions. [2022-02-10 22:54:41,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.25) internal successors, (105), 20 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:54:41,176 INFO L276 IsEmpty]: Start isEmpty. Operand 1922 states and 5472 transitions. [2022-02-10 22:54:41,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-02-10 22:54:41,180 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:54:41,180 INFO L515 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] [2022-02-10 22:54:41,199 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-02-10 22:54:41,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:54:41,395 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:54:41,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:54:41,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1491760117, now seen corresponding path program 18 times [2022-02-10 22:54:41,396 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:54:41,396 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572640919] [2022-02-10 22:54:41,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:54:41,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:54:41,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:54:41,500 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:54:41,500 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:54:41,500 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572640919] [2022-02-10 22:54:41,500 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572640919] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:54:41,500 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186153886] [2022-02-10 22:54:41,500 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 22:54:41,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:54:41,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:54:41,512 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:54:41,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-02-10 22:54:41,579 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-10 22:54:41,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:54:41,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 22:54:41,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:54:41,782 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:54:41,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:54:42,240 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:54:42,241 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186153886] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:54:42,241 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:54:42,241 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 19 [2022-02-10 22:54:42,241 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053907795] [2022-02-10 22:54:42,241 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:54:42,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 22:54:42,241 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:54:42,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 22:54:42,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2022-02-10 22:54:42,242 INFO L87 Difference]: Start difference. First operand 1922 states and 5472 transitions. Second operand has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:54:42,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:54:42,512 INFO L93 Difference]: Finished difference Result 2403 states and 6796 transitions. [2022-02-10 22:54:42,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-10 22:54:42,513 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-02-10 22:54:42,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:54:42,517 INFO L225 Difference]: With dead ends: 2403 [2022-02-10 22:54:42,517 INFO L226 Difference]: Without dead ends: 2355 [2022-02-10 22:54:42,517 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 134 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=168, Invalid=482, Unknown=0, NotChecked=0, Total=650 [2022-02-10 22:54:42,517 INFO L934 BasicCegarLoop]: 113 mSDtfsCounter, 218 mSDsluCounter, 743 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 824 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 22:54:42,518 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 824 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 22:54:42,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2355 states. [2022-02-10 22:54:42,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2355 to 1922. [2022-02-10 22:54:42,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1922 states, 1921 states have (on average 2.846434148880791) internal successors, (5468), 1921 states have internal predecessors, (5468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:54:42,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1922 states to 1922 states and 5468 transitions. [2022-02-10 22:54:42,565 INFO L78 Accepts]: Start accepts. Automaton has 1922 states and 5468 transitions. Word has length 72 [2022-02-10 22:54:42,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:54:42,565 INFO L470 AbstractCegarLoop]: Abstraction has 1922 states and 5468 transitions. [2022-02-10 22:54:42,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:54:42,565 INFO L276 IsEmpty]: Start isEmpty. Operand 1922 states and 5468 transitions. [2022-02-10 22:54:42,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-02-10 22:54:42,568 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:54:42,568 INFO L515 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] [2022-02-10 22:54:42,584 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-02-10 22:54:42,783 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,SelfDestructingSolverStorable21 [2022-02-10 22:54:42,783 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:54:42,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:54:42,784 INFO L85 PathProgramCache]: Analyzing trace with hash -2112399269, now seen corresponding path program 19 times [2022-02-10 22:54:42,784 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:54:42,784 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505488169] [2022-02-10 22:54:42,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:54:42,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:54:42,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:54:42,940 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:54:42,940 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:54:42,940 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505488169] [2022-02-10 22:54:42,940 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505488169] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:54:42,940 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551062727] [2022-02-10 22:54:42,940 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 22:54:42,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:54:42,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:54:42,948 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:54:42,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-02-10 22:54:43,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:54:43,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 22:54:43,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:54:43,209 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:54:43,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:54:43,465 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:54:43,465 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551062727] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:54:43,465 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:54:43,465 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 11] total 23 [2022-02-10 22:54:43,465 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51171934] [2022-02-10 22:54:43,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:54:43,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-10 22:54:43,465 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:54:43,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-10 22:54:43,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2022-02-10 22:54:43,466 INFO L87 Difference]: Start difference. First operand 1922 states and 5468 transitions. Second operand has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:54:45,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:54:45,967 INFO L93 Difference]: Finished difference Result 4872 states and 13393 transitions. [2022-02-10 22:54:45,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-02-10 22:54:45,968 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-02-10 22:54:45,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:54:45,975 INFO L225 Difference]: With dead ends: 4872 [2022-02-10 22:54:45,975 INFO L226 Difference]: Without dead ends: 4770 [2022-02-10 22:54:45,976 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 185 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2298 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=901, Invalid=5741, Unknown=0, NotChecked=0, Total=6642 [2022-02-10 22:54:45,976 INFO L934 BasicCegarLoop]: 203 mSDtfsCounter, 671 mSDsluCounter, 2264 mSDsCounter, 0 mSdLazyCounter, 1308 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 671 SdHoareTripleChecker+Valid, 2312 SdHoareTripleChecker+Invalid, 1372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-10 22:54:45,976 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [671 Valid, 2312 Invalid, 1372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1308 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-10 22:54:45,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4770 states. [2022-02-10 22:54:46,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4770 to 2070. [2022-02-10 22:54:46,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2070 states, 2069 states have (on average 2.887868535524408) internal successors, (5975), 2069 states have internal predecessors, (5975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:54:46,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2070 states to 2070 states and 5975 transitions. [2022-02-10 22:54:46,019 INFO L78 Accepts]: Start accepts. Automaton has 2070 states and 5975 transitions. Word has length 72 [2022-02-10 22:54:46,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:54:46,020 INFO L470 AbstractCegarLoop]: Abstraction has 2070 states and 5975 transitions. [2022-02-10 22:54:46,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:54:46,020 INFO L276 IsEmpty]: Start isEmpty. Operand 2070 states and 5975 transitions. [2022-02-10 22:54:46,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-02-10 22:54:46,023 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:54:46,023 INFO L515 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] [2022-02-10 22:54:46,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-02-10 22:54:46,232 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,SelfDestructingSolverStorable22 [2022-02-10 22:54:46,233 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:54:46,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:54:46,233 INFO L85 PathProgramCache]: Analyzing trace with hash 934362475, now seen corresponding path program 20 times [2022-02-10 22:54:46,233 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:54:46,233 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022909616] [2022-02-10 22:54:46,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:54:46,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:54:46,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:54:46,362 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:54:46,362 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:54:46,362 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022909616] [2022-02-10 22:54:46,362 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022909616] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:54:46,362 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395648579] [2022-02-10 22:54:46,362 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 22:54:46,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:54:46,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:54:46,363 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:54:46,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-02-10 22:54:46,416 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 22:54:46,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:54:46,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 22:54:46,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:54:46,634 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:54:46,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:54:51,861 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:54:51,861 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395648579] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:54:51,861 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:54:51,861 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2022-02-10 22:54:51,862 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228520436] [2022-02-10 22:54:51,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:54:51,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 22:54:51,862 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:54:51,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 22:54:51,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2022-02-10 22:54:51,862 INFO L87 Difference]: Start difference. First operand 2070 states and 5975 transitions. Second operand has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:54:53,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:54:53,505 INFO L93 Difference]: Finished difference Result 3970 states and 11033 transitions. [2022-02-10 22:54:53,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-02-10 22:54:53,505 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-02-10 22:54:53,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:54:53,511 INFO L225 Difference]: With dead ends: 3970 [2022-02-10 22:54:53,511 INFO L226 Difference]: Without dead ends: 3970 [2022-02-10 22:54:53,511 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=429, Invalid=1551, Unknown=0, NotChecked=0, Total=1980 [2022-02-10 22:54:53,511 INFO L934 BasicCegarLoop]: 140 mSDtfsCounter, 472 mSDsluCounter, 1360 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 1415 SdHoareTripleChecker+Invalid, 688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 22:54:53,512 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [472 Valid, 1415 Invalid, 688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 644 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 22:54:53,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3970 states. [2022-02-10 22:54:53,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3970 to 2386. [2022-02-10 22:54:53,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2386 states, 2385 states have (on average 2.893081761006289) internal successors, (6900), 2385 states have internal predecessors, (6900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:54:53,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2386 states to 2386 states and 6900 transitions. [2022-02-10 22:54:53,548 INFO L78 Accepts]: Start accepts. Automaton has 2386 states and 6900 transitions. Word has length 72 [2022-02-10 22:54:53,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:54:53,548 INFO L470 AbstractCegarLoop]: Abstraction has 2386 states and 6900 transitions. [2022-02-10 22:54:53,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:54:53,549 INFO L276 IsEmpty]: Start isEmpty. Operand 2386 states and 6900 transitions. [2022-02-10 22:54:53,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-02-10 22:54:53,552 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:54:53,552 INFO L515 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] [2022-02-10 22:54:53,574 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-02-10 22:54:53,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:54:53,775 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:54:53,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:54:53,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1604543435, now seen corresponding path program 21 times [2022-02-10 22:54:53,775 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:54:53,775 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672712538] [2022-02-10 22:54:53,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:54:53,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:54:53,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:54:53,883 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:54:53,883 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:54:53,883 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672712538] [2022-02-10 22:54:53,883 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672712538] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:54:53,883 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746405960] [2022-02-10 22:54:53,883 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 22:54:53,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:54:53,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:54:53,884 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:54:53,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-02-10 22:54:53,935 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-10 22:54:53,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:54:53,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 22:54:53,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:54:54,114 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:54:54,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:55:16,422 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:55:16,422 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746405960] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:55:16,423 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:55:16,423 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 20 [2022-02-10 22:55:16,423 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083243962] [2022-02-10 22:55:16,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:55:16,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:55:16,423 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:55:16,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:55:16,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=284, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:55:16,424 INFO L87 Difference]: Start difference. First operand 2386 states and 6900 transitions. Second operand has 20 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:55:18,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:55:18,118 INFO L93 Difference]: Finished difference Result 3099 states and 8865 transitions. [2022-02-10 22:55:18,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-10 22:55:18,119 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-02-10 22:55:18,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:55:18,124 INFO L225 Difference]: With dead ends: 3099 [2022-02-10 22:55:18,124 INFO L226 Difference]: Without dead ends: 3051 [2022-02-10 22:55:18,124 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 151 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 426 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=326, Invalid=1156, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 22:55:18,125 INFO L934 BasicCegarLoop]: 128 mSDtfsCounter, 254 mSDsluCounter, 1299 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 1377 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-10 22:55:18,125 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [254 Valid, 1377 Invalid, 713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 670 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-10 22:55:18,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3051 states. [2022-02-10 22:55:18,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3051 to 2354. [2022-02-10 22:55:18,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2354 states, 2353 states have (on average 2.888227794305142) internal successors, (6796), 2353 states have internal predecessors, (6796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:55:18,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2354 states to 2354 states and 6796 transitions. [2022-02-10 22:55:18,160 INFO L78 Accepts]: Start accepts. Automaton has 2354 states and 6796 transitions. Word has length 72 [2022-02-10 22:55:18,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:55:18,160 INFO L470 AbstractCegarLoop]: Abstraction has 2354 states and 6796 transitions. [2022-02-10 22:55:18,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:55:18,161 INFO L276 IsEmpty]: Start isEmpty. Operand 2354 states and 6796 transitions. [2022-02-10 22:55:18,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-02-10 22:55:18,165 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:55:18,165 INFO L515 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] [2022-02-10 22:55:18,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-02-10 22:55:18,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:55:18,408 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:55:18,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:55:18,409 INFO L85 PathProgramCache]: Analyzing trace with hash -664216311, now seen corresponding path program 22 times [2022-02-10 22:55:18,409 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:55:18,409 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289606646] [2022-02-10 22:55:18,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:55:18,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:55:18,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:55:18,583 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:55:18,584 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:55:18,584 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289606646] [2022-02-10 22:55:18,584 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289606646] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:55:18,584 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879683203] [2022-02-10 22:55:18,584 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 22:55:18,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:55:18,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:55:18,596 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:55:18,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-02-10 22:55:18,652 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 22:55:18,653 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:55:18,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 22:55:18,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:55:18,938 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:55:18,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:55:22,216 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:55:22,216 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879683203] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:55:22,216 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:55:22,216 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2022-02-10 22:55:22,216 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198890651] [2022-02-10 22:55:22,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:55:22,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 22:55:22,217 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:55:22,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 22:55:22,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=357, Unknown=0, NotChecked=0, Total=462 [2022-02-10 22:55:22,217 INFO L87 Difference]: Start difference. First operand 2354 states and 6796 transitions. Second operand has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:55:23,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:55:23,556 INFO L93 Difference]: Finished difference Result 3499 states and 9761 transitions. [2022-02-10 22:55:23,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-02-10 22:55:23,557 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-02-10 22:55:23,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:55:23,563 INFO L225 Difference]: With dead ends: 3499 [2022-02-10 22:55:23,563 INFO L226 Difference]: Without dead ends: 3499 [2022-02-10 22:55:23,563 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 530 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=451, Invalid=1529, Unknown=0, NotChecked=0, Total=1980 [2022-02-10 22:55:23,563 INFO L934 BasicCegarLoop]: 129 mSDtfsCounter, 463 mSDsluCounter, 1529 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 1578 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 22:55:23,563 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [463 Valid, 1578 Invalid, 721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 22:55:23,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3499 states. [2022-02-10 22:55:23,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3499 to 2410. [2022-02-10 22:55:23,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2410 states, 2409 states have (on average 2.893316728933167) internal successors, (6970), 2409 states have internal predecessors, (6970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:55:23,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2410 states to 2410 states and 6970 transitions. [2022-02-10 22:55:23,599 INFO L78 Accepts]: Start accepts. Automaton has 2410 states and 6970 transitions. Word has length 72 [2022-02-10 22:55:23,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:55:23,599 INFO L470 AbstractCegarLoop]: Abstraction has 2410 states and 6970 transitions. [2022-02-10 22:55:23,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:55:23,599 INFO L276 IsEmpty]: Start isEmpty. Operand 2410 states and 6970 transitions. [2022-02-10 22:55:23,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-02-10 22:55:23,603 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:55:23,603 INFO L515 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] [2022-02-10 22:55:23,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-02-10 22:55:23,818 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,SelfDestructingSolverStorable25 [2022-02-10 22:55:23,819 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:55:23,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:55:23,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1091845075, now seen corresponding path program 23 times [2022-02-10 22:55:23,819 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:55:23,819 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909091946] [2022-02-10 22:55:23,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:55:23,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:55:23,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:55:23,926 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:55:23,926 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:55:23,926 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909091946] [2022-02-10 22:55:23,926 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909091946] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:55:23,926 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064091723] [2022-02-10 22:55:23,926 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 22:55:23,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:55:23,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:55:23,927 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:55:23,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-02-10 22:55:24,012 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 22:55:24,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:55:24,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 22:55:24,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:55:24,215 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:55:24,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:55:48,402 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:55:48,402 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064091723] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:55:48,402 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:55:48,402 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 20 [2022-02-10 22:55:48,402 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152089573] [2022-02-10 22:55:48,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:55:48,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:55:48,403 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:55:48,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:55:48,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:55:48,403 INFO L87 Difference]: Start difference. First operand 2410 states and 6970 transitions. Second operand has 20 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:55:50,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:55:50,705 INFO L93 Difference]: Finished difference Result 3577 states and 10146 transitions. [2022-02-10 22:55:50,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-02-10 22:55:50,706 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-02-10 22:55:50,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:55:50,711 INFO L225 Difference]: With dead ends: 3577 [2022-02-10 22:55:50,711 INFO L226 Difference]: Without dead ends: 3529 [2022-02-10 22:55:50,712 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 163 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 803 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=528, Invalid=2022, Unknown=0, NotChecked=0, Total=2550 [2022-02-10 22:55:50,712 INFO L934 BasicCegarLoop]: 126 mSDtfsCounter, 381 mSDsluCounter, 1227 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 1306 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-10 22:55:50,712 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [381 Valid, 1306 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-10 22:55:50,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3529 states. [2022-02-10 22:55:50,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3529 to 2362. [2022-02-10 22:55:50,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2362 states, 2361 states have (on average 2.891147818720881) internal successors, (6826), 2361 states have internal predecessors, (6826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:55:50,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2362 states to 2362 states and 6826 transitions. [2022-02-10 22:55:50,762 INFO L78 Accepts]: Start accepts. Automaton has 2362 states and 6826 transitions. Word has length 72 [2022-02-10 22:55:50,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:55:50,762 INFO L470 AbstractCegarLoop]: Abstraction has 2362 states and 6826 transitions. [2022-02-10 22:55:50,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:55:50,763 INFO L276 IsEmpty]: Start isEmpty. Operand 2362 states and 6826 transitions. [2022-02-10 22:55:50,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-02-10 22:55:50,766 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:55:50,766 INFO L515 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] [2022-02-10 22:55:50,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-02-10 22:55:50,969 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,SelfDestructingSolverStorable26 [2022-02-10 22:55:50,970 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:55:50,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:55:50,971 INFO L85 PathProgramCache]: Analyzing trace with hash 2000622901, now seen corresponding path program 24 times [2022-02-10 22:55:50,971 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:55:50,971 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859572432] [2022-02-10 22:55:50,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:55:50,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:55:50,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:55:51,056 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:55:51,057 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:55:51,057 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859572432] [2022-02-10 22:55:51,057 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859572432] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:55:51,057 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627930173] [2022-02-10 22:55:51,057 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 22:55:51,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:55:51,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:55:51,058 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:55:51,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-02-10 22:55:51,121 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-10 22:55:51,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:55:51,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 22:55:51,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:55:51,306 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:55:51,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:56:13,282 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:56:13,282 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1627930173] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:56:13,282 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:56:13,282 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 20 [2022-02-10 22:56:13,282 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720452318] [2022-02-10 22:56:13,282 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:56:13,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:56:13,283 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:56:13,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:56:13,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:56:13,283 INFO L87 Difference]: Start difference. First operand 2362 states and 6826 transitions. Second operand has 20 states, 20 states have (on average 4.65) internal successors, (93), 20 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:56:14,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:56:14,187 INFO L93 Difference]: Finished difference Result 3089 states and 8818 transitions. [2022-02-10 22:56:14,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-10 22:56:14,187 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.65) internal successors, (93), 20 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-02-10 22:56:14,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:56:14,192 INFO L225 Difference]: With dead ends: 3089 [2022-02-10 22:56:14,192 INFO L226 Difference]: Without dead ends: 3017 [2022-02-10 22:56:14,192 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 147 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=252, Invalid=938, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 22:56:14,192 INFO L934 BasicCegarLoop]: 125 mSDtfsCounter, 276 mSDsluCounter, 987 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 1075 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:56:14,193 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [276 Valid, 1075 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:56:14,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3017 states. [2022-02-10 22:56:14,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3017 to 2398. [2022-02-10 22:56:14,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2398 states, 2397 states have (on average 2.8873591989987486) internal successors, (6921), 2397 states have internal predecessors, (6921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:56:14,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2398 states to 2398 states and 6921 transitions. [2022-02-10 22:56:14,235 INFO L78 Accepts]: Start accepts. Automaton has 2398 states and 6921 transitions. Word has length 72 [2022-02-10 22:56:14,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:56:14,236 INFO L470 AbstractCegarLoop]: Abstraction has 2398 states and 6921 transitions. [2022-02-10 22:56:14,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.65) internal successors, (93), 20 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:56:14,236 INFO L276 IsEmpty]: Start isEmpty. Operand 2398 states and 6921 transitions. [2022-02-10 22:56:14,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-02-10 22:56:14,239 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:56:14,239 INFO L515 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] [2022-02-10 22:56:14,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-02-10 22:56:14,459 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,SelfDestructingSolverStorable27 [2022-02-10 22:56:14,459 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:56:14,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:56:14,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1809397223, now seen corresponding path program 25 times [2022-02-10 22:56:14,461 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:56:14,461 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308168982] [2022-02-10 22:56:14,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:56:14,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:56:14,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:56:14,604 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:56:14,604 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:56:14,604 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308168982] [2022-02-10 22:56:14,604 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308168982] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:56:14,604 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719768834] [2022-02-10 22:56:14,604 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 22:56:14,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:56:14,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:56:14,616 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:56:14,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-02-10 22:56:14,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:56:14,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 22:56:14,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:56:14,876 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:56:14,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:56:18,206 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:56:18,206 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1719768834] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:56:18,206 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:56:18,206 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-02-10 22:56:18,206 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670938092] [2022-02-10 22:56:18,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:56:18,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:56:18,206 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:56:18,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:56:18,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:56:18,207 INFO L87 Difference]: Start difference. First operand 2398 states and 6921 transitions. Second operand has 20 states, 20 states have (on average 5.3) internal successors, (106), 20 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:56:19,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:56:19,605 INFO L93 Difference]: Finished difference Result 4265 states and 11995 transitions. [2022-02-10 22:56:19,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-02-10 22:56:19,605 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.3) internal successors, (106), 20 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-02-10 22:56:19,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:56:19,612 INFO L225 Difference]: With dead ends: 4265 [2022-02-10 22:56:19,612 INFO L226 Difference]: Without dead ends: 4265 [2022-02-10 22:56:19,612 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 157 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 511 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=512, Invalid=1558, Unknown=0, NotChecked=0, Total=2070 [2022-02-10 22:56:19,612 INFO L934 BasicCegarLoop]: 126 mSDtfsCounter, 539 mSDsluCounter, 1285 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 539 SdHoareTripleChecker+Valid, 1340 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 22:56:19,612 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [539 Valid, 1340 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 22:56:19,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4265 states. [2022-02-10 22:56:19,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4265 to 2714. [2022-02-10 22:56:19,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2714 states, 2713 states have (on average 2.912642830814596) internal successors, (7902), 2713 states have internal predecessors, (7902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:56:19,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2714 states to 2714 states and 7902 transitions. [2022-02-10 22:56:19,649 INFO L78 Accepts]: Start accepts. Automaton has 2714 states and 7902 transitions. Word has length 72 [2022-02-10 22:56:19,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:56:19,649 INFO L470 AbstractCegarLoop]: Abstraction has 2714 states and 7902 transitions. [2022-02-10 22:56:19,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.3) internal successors, (106), 20 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:56:19,649 INFO L276 IsEmpty]: Start isEmpty. Operand 2714 states and 7902 transitions. [2022-02-10 22:56:19,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-02-10 22:56:19,653 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:56:19,653 INFO L515 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] [2022-02-10 22:56:19,669 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-02-10 22:56:19,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-02-10 22:56:19,864 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:56:19,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:56:19,864 INFO L85 PathProgramCache]: Analyzing trace with hash -53335837, now seen corresponding path program 26 times [2022-02-10 22:56:19,864 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:56:19,865 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902948269] [2022-02-10 22:56:19,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:56:19,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:56:19,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:56:19,977 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:56:19,977 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:56:19,977 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902948269] [2022-02-10 22:56:19,977 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902948269] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:56:19,977 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897486752] [2022-02-10 22:56:19,977 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 22:56:19,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:56:19,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:56:19,978 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:56:19,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-02-10 22:56:20,036 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 22:56:20,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:56:20,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 22:56:20,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:56:20,233 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:56:20,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:56:42,800 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:56:42,801 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897486752] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:56:42,801 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:56:42,801 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-02-10 22:56:42,801 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064678331] [2022-02-10 22:56:42,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:56:42,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 22:56:42,801 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:56:42,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 22:56:42,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2022-02-10 22:56:42,801 INFO L87 Difference]: Start difference. First operand 2714 states and 7902 transitions. Second operand has 19 states, 19 states have (on average 4.684210526315789) internal successors, (89), 19 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:56:45,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:56:45,364 INFO L93 Difference]: Finished difference Result 4279 states and 12280 transitions. [2022-02-10 22:56:45,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-02-10 22:56:45,365 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.684210526315789) internal successors, (89), 19 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-02-10 22:56:45,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:56:45,371 INFO L225 Difference]: With dead ends: 4279 [2022-02-10 22:56:45,371 INFO L226 Difference]: Without dead ends: 4231 [2022-02-10 22:56:45,372 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 166 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 899 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=599, Invalid=2263, Unknown=0, NotChecked=0, Total=2862 [2022-02-10 22:56:45,372 INFO L934 BasicCegarLoop]: 125 mSDtfsCounter, 591 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 591 SdHoareTripleChecker+Valid, 1023 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-10 22:56:45,372 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [591 Valid, 1023 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-10 22:56:45,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4231 states. [2022-02-10 22:56:45,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4231 to 2878. [2022-02-10 22:56:45,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2878 states, 2877 states have (on average 2.9283976364268334) internal successors, (8425), 2877 states have internal predecessors, (8425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:56:45,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2878 states to 2878 states and 8425 transitions. [2022-02-10 22:56:45,429 INFO L78 Accepts]: Start accepts. Automaton has 2878 states and 8425 transitions. Word has length 72 [2022-02-10 22:56:45,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:56:45,429 INFO L470 AbstractCegarLoop]: Abstraction has 2878 states and 8425 transitions. [2022-02-10 22:56:45,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.684210526315789) internal successors, (89), 19 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:56:45,429 INFO L276 IsEmpty]: Start isEmpty. Operand 2878 states and 8425 transitions. [2022-02-10 22:56:45,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-02-10 22:56:45,433 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:56:45,433 INFO L515 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] [2022-02-10 22:56:45,449 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-02-10 22:56:45,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:56:45,633 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:56:45,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:56:45,634 INFO L85 PathProgramCache]: Analyzing trace with hash 855441989, now seen corresponding path program 27 times [2022-02-10 22:56:45,634 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:56:45,635 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984254592] [2022-02-10 22:56:45,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:56:45,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:56:45,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:56:45,746 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:56:45,747 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:56:45,747 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984254592] [2022-02-10 22:56:45,747 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984254592] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:56:45,747 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312144051] [2022-02-10 22:56:45,747 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 22:56:45,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:56:45,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:56:45,748 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:56:45,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-02-10 22:56:45,809 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-10 22:56:45,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:56:45,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 22:56:45,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:56:46,021 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:56:46,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:57:06,855 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:57:06,855 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312144051] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:57:06,855 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:57:06,855 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-02-10 22:57:06,856 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25741561] [2022-02-10 22:57:06,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:57:06,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 22:57:06,856 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:57:06,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 22:57:06,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2022-02-10 22:57:06,856 INFO L87 Difference]: Start difference. First operand 2878 states and 8425 transitions. Second operand has 19 states, 19 states have (on average 4.631578947368421) internal successors, (88), 19 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:08,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:57:08,597 INFO L93 Difference]: Finished difference Result 4349 states and 12413 transitions. [2022-02-10 22:57:08,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-10 22:57:08,598 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.631578947368421) internal successors, (88), 19 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-02-10 22:57:08,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:57:08,604 INFO L225 Difference]: With dead ends: 4349 [2022-02-10 22:57:08,605 INFO L226 Difference]: Without dead ends: 4277 [2022-02-10 22:57:08,605 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 158 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=412, Invalid=1568, Unknown=0, NotChecked=0, Total=1980 [2022-02-10 22:57:08,605 INFO L934 BasicCegarLoop]: 122 mSDtfsCounter, 404 mSDsluCounter, 928 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 22:57:08,606 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [404 Valid, 1017 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 22:57:08,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4277 states. [2022-02-10 22:57:08,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4277 to 2794. [2022-02-10 22:57:08,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2794 states, 2793 states have (on average 2.9308986752595776) internal successors, (8186), 2793 states have internal predecessors, (8186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:08,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2794 states to 2794 states and 8186 transitions. [2022-02-10 22:57:08,646 INFO L78 Accepts]: Start accepts. Automaton has 2794 states and 8186 transitions. Word has length 72 [2022-02-10 22:57:08,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:57:08,646 INFO L470 AbstractCegarLoop]: Abstraction has 2794 states and 8186 transitions. [2022-02-10 22:57:08,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.631578947368421) internal successors, (88), 19 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:08,646 INFO L276 IsEmpty]: Start isEmpty. Operand 2794 states and 8186 transitions. [2022-02-10 22:57:08,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-02-10 22:57:08,650 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:57:08,650 INFO L515 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] [2022-02-10 22:57:08,666 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-02-10 22:57:08,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:57:08,859 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:57:08,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:57:08,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1488314149, now seen corresponding path program 28 times [2022-02-10 22:57:08,860 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:57:08,860 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941120016] [2022-02-10 22:57:08,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:57:08,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:57:08,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:57:08,959 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:57:08,959 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:57:08,959 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941120016] [2022-02-10 22:57:08,959 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941120016] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:57:08,959 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049891792] [2022-02-10 22:57:08,959 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 22:57:08,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:57:08,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:57:08,968 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:57:08,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-02-10 22:57:09,033 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 22:57:09,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:57:09,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 22:57:09,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:57:09,239 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:57:09,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:57:28,586 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:57:28,587 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049891792] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:57:28,587 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:57:28,587 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-02-10 22:57:28,587 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106212095] [2022-02-10 22:57:28,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:57:28,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 22:57:28,587 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:57:28,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 22:57:28,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2022-02-10 22:57:28,588 INFO L87 Difference]: Start difference. First operand 2794 states and 8186 transitions. Second operand has 19 states, 19 states have (on average 4.631578947368421) internal successors, (88), 19 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:29,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:57:29,080 INFO L93 Difference]: Finished difference Result 3493 states and 10089 transitions. [2022-02-10 22:57:29,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 22:57:29,080 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.631578947368421) internal successors, (88), 19 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-02-10 22:57:29,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:57:29,085 INFO L225 Difference]: With dead ends: 3493 [2022-02-10 22:57:29,085 INFO L226 Difference]: Without dead ends: 3397 [2022-02-10 22:57:29,085 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 143 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=181, Invalid=689, Unknown=0, NotChecked=0, Total=870 [2022-02-10 22:57:29,086 INFO L934 BasicCegarLoop]: 122 mSDtfsCounter, 257 mSDsluCounter, 787 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:57:29,086 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [257 Valid, 877 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:57:29,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3397 states. [2022-02-10 22:57:29,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3397 to 2790. [2022-02-10 22:57:29,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2790 states, 2789 states have (on average 2.9282897095733236) internal successors, (8167), 2789 states have internal predecessors, (8167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:29,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2790 states to 2790 states and 8167 transitions. [2022-02-10 22:57:29,119 INFO L78 Accepts]: Start accepts. Automaton has 2790 states and 8167 transitions. Word has length 72 [2022-02-10 22:57:29,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:57:29,119 INFO L470 AbstractCegarLoop]: Abstraction has 2790 states and 8167 transitions. [2022-02-10 22:57:29,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.631578947368421) internal successors, (88), 19 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:29,119 INFO L276 IsEmpty]: Start isEmpty. Operand 2790 states and 8167 transitions. [2022-02-10 22:57:29,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-10 22:57:29,123 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:57:29,123 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:57:29,139 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-02-10 22:57:29,323 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,SelfDestructingSolverStorable31 [2022-02-10 22:57:29,323 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:57:29,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:57:29,323 INFO L85 PathProgramCache]: Analyzing trace with hash 191604221, now seen corresponding path program 29 times [2022-02-10 22:57:29,323 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:57:29,324 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528409872] [2022-02-10 22:57:29,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:57:29,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:57:29,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:57:29,594 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:57:29,595 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:57:29,595 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528409872] [2022-02-10 22:57:29,595 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528409872] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:57:29,595 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937694631] [2022-02-10 22:57:29,595 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 22:57:29,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:57:29,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:57:29,596 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:57:29,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-02-10 22:57:29,663 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 22:57:29,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:57:29,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-10 22:57:29,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2022-02-10 23:06:19,857 WARN L244 SmtUtils]: Removed 2 from assertion stack [2022-02-10 23:06:19,858 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-02-10 23:06:19,869 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-02-10 23:06:19,869 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 [2022-02-10 23:06:19,874 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2022-02-10 23:06:20,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:06:20,059 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 75 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 11 for 2ms.. [2022-02-10 23:06:20,060 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-02-10 23:06:20,060 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-02-10 23:06:20,062 INFO L733 BasicCegarLoop]: Path program histogram: [29, 2, 1, 1] [2022-02-10 23:06:20,064 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-10 23:06:20,064 INFO L184 ceAbstractionStarter]: Computing trace abstraction results [2022-02-10 23:06:20,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.02 11:06:20 BasicIcfg [2022-02-10 23:06:20,065 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-10 23:06:20,065 INFO L158 Benchmark]: Toolchain (without parser) took 789591.51ms. Allocated memory was 207.6MB in the beginning and 370.1MB in the end (delta: 162.5MB). Free memory was 152.4MB in the beginning and 139.1MB in the end (delta: 13.3MB). Peak memory consumption was 216.1MB. Max. memory is 8.0GB. [2022-02-10 23:06:20,065 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 207.6MB. Free memory is still 168.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-10 23:06:20,066 INFO L158 Benchmark]: CACSL2BoogieTranslator took 205.70ms. Allocated memory was 207.6MB in the beginning and 256.9MB in the end (delta: 49.3MB). Free memory was 152.2MB in the beginning and 229.6MB in the end (delta: -77.4MB). Peak memory consumption was 10.6MB. Max. memory is 8.0GB. [2022-02-10 23:06:20,066 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.13ms. Allocated memory is still 256.9MB. Free memory was 229.0MB in the beginning and 227.9MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-10 23:06:20,066 INFO L158 Benchmark]: Boogie Preprocessor took 17.23ms. Allocated memory is still 256.9MB. Free memory was 227.9MB in the beginning and 226.4MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-10 23:06:20,066 INFO L158 Benchmark]: RCFGBuilder took 368.36ms. Allocated memory is still 256.9MB. Free memory was 226.4MB in the beginning and 212.8MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-02-10 23:06:20,066 INFO L158 Benchmark]: TraceAbstraction took 788972.84ms. Allocated memory was 256.9MB in the beginning and 370.1MB in the end (delta: 113.2MB). Free memory was 212.3MB in the beginning and 139.1MB in the end (delta: 73.2MB). Peak memory consumption was 226.1MB. Max. memory is 8.0GB. [2022-02-10 23:06:20,067 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 207.6MB. Free memory is still 168.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 205.70ms. Allocated memory was 207.6MB in the beginning and 256.9MB in the end (delta: 49.3MB). Free memory was 152.2MB in the beginning and 229.6MB in the end (delta: -77.4MB). Peak memory consumption was 10.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 23.13ms. Allocated memory is still 256.9MB. Free memory was 229.0MB in the beginning and 227.9MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 17.23ms. Allocated memory is still 256.9MB. Free memory was 227.9MB in the beginning and 226.4MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 368.36ms. Allocated memory is still 256.9MB. Free memory was 226.4MB in the beginning and 212.8MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 788972.84ms. Allocated memory was 256.9MB in the beginning and 370.1MB in the end (delta: 113.2MB). Free memory was 212.3MB in the beginning and 139.1MB in the end (delta: 73.2MB). Peak memory consumption was 226.1MB. 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 analyzing trace of length 75 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 11 for 2ms.. - 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 analyzing trace of length 75 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 11 for 2ms.. - 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 analyzing trace of length 75 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 11 for 2ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 96 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 788.9s, OverallIterations: 33, TraceHistogramMax: 2, PathProgramHistogramMax: 29, EmptinessCheckTime: 0.1s, AutomataDifference: 47.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12599 SdHoareTripleChecker+Valid, 14.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12599 mSDsluCounter, 36953 SdHoareTripleChecker+Invalid, 13.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 34764 mSDsCounter, 1551 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 15237 IncrementalHoareTripleChecker+Invalid, 16788 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1551 mSolverCounterUnsat, 4067 mSDtfsCounter, 15237 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5633 GetRequests, 4217 SyntacticMatches, 39 SemanticMatches, 1377 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23626 ImplicationChecksByTransitivity, 39.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2878occurred in iteration=30, InterpolantAutomatonStates: 1214, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 32 MinimizatonAttempts, 31640 StatesRemovedByMinimization, 31 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 200.3s InterpolantComputationTime, 4392 NumberOfCodeBlocks, 4285 NumberOfCodeBlocksAsserted, 96 NumberOfCheckSat, 6372 ConstructedInterpolants, 0 QuantifiedInterpolants, 33389 SizeOfPredicates, 311 NumberOfNonLiveVariables, 4488 ConjunctsInSsa, 359 ConjunctsInUnsatCore, 91 InterpolantComputations, 4 PerfectInterpolantSequences, 301/641 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