/usr/bin/java -Xmx16000000000 -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-Separate.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/triangular-longest-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bc79526 [2022-01-18 08:30:40,614 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 08:30:40,616 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 08:30:40,650 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-18 08:30:40,693 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-18 08:30:40,695 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-18 08:30:40,696 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-18 08:30:40,697 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-18 08:30:40,698 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-18 08:30:40,699 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-18 08:30:40,703 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-18 08:30:40,704 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-18 08:30:40,705 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-18 08:30:40,706 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-18 08:30:40,707 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-18 08:30:40,707 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-18 08:30:40,709 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-18 08:30:40,714 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 08:30:40,715 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 08:30:40,715 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 08:30:40,720 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-Separate.epf [2022-01-18 08:30:40,744 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 08:30:40,744 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 08:30:40,744 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 08:30:40,744 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 08:30:40,745 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 08:30:40,745 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 08:30:40,746 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 08:30:40,746 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 08:30:40,746 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 08:30:40,746 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 08:30:40,746 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 08:30:40,746 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 08:30:40,746 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 08:30:40,747 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 08:30:40,747 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 08:30:40,747 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 08:30:40,747 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 08:30:40,747 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 08:30:40,747 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 08:30:40,747 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 08:30:40,747 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 08:30:40,748 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 08:30:40,748 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 08:30:40,748 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 08:30:40,748 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 08:30:40,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 08:30:40,748 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 08:30:40,748 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 08:30:40,749 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 08:30:40,749 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 08:30:40,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 08:30:40,749 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 08:30:40,749 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 08:30:40,749 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2022-01-18 08:30:40,749 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 08:30:40,963 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 08:30:40,998 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 08:30:41,000 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 08:30:41,001 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-18 08:30:41,003 INFO L275 PluginConnector]: CDTParser initialized [2022-01-18 08:30:41,004 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-longest-2.i [2022-01-18 08:30:41,073 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/288217736/61161d9d3ba9404380ffb4a8b5383bef/FLAGd9fb62f84 [2022-01-18 08:30:41,495 INFO L306 CDTParser]: Found 1 translation units. [2022-01-18 08:30:41,496 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-2.i [2022-01-18 08:30:41,510 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/288217736/61161d9d3ba9404380ffb4a8b5383bef/FLAGd9fb62f84 [2022-01-18 08:30:41,527 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/288217736/61161d9d3ba9404380ffb4a8b5383bef [2022-01-18 08:30:41,529 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 08:30:41,530 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-18 08:30:41,532 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-18 08:30:41,532 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-18 08:30:41,534 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-18 08:30:41,535 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 08:30:41" (1/1) ... [2022-01-18 08:30:41,535 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40dd1400 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 08:30:41, skipping insertion in model container [2022-01-18 08:30:41,536 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 08:30:41" (1/1) ... [2022-01-18 08:30:41,541 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-18 08:30:41,573 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-18 08:30:41,861 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-2.i[30964,30977] [2022-01-18 08:30:41,864 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 08:30:41,872 INFO L203 MainTranslator]: Completed pre-run [2022-01-18 08:30:41,923 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-2.i[30964,30977] [2022-01-18 08:30:41,924 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 08:30:41,956 INFO L208 MainTranslator]: Completed translation [2022-01-18 08:30:41,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 08:30:41 WrapperNode [2022-01-18 08:30:41,956 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-18 08:30:41,957 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 08:30:41,957 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 08:30:41,958 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 08:30:41,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 08:30:41" (1/1) ... [2022-01-18 08:30:41,990 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 08:30:41" (1/1) ... [2022-01-18 08:30:42,009 INFO L137 Inliner]: procedures = 169, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 47 [2022-01-18 08:30:42,010 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 08:30:42,010 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 08:30:42,010 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 08:30:42,011 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 08:30:42,017 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 08:30:41" (1/1) ... [2022-01-18 08:30:42,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 08:30:41" (1/1) ... [2022-01-18 08:30:42,022 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 08:30:41" (1/1) ... [2022-01-18 08:30:42,022 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 08:30:41" (1/1) ... [2022-01-18 08:30:42,039 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 08:30:41" (1/1) ... [2022-01-18 08:30:42,042 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 08:30:41" (1/1) ... [2022-01-18 08:30:42,043 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 08:30:41" (1/1) ... [2022-01-18 08:30:42,045 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 08:30:42,046 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 08:30:42,046 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 08:30:42,046 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 08:30:42,047 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 08:30:41" (1/1) ... [2022-01-18 08:30:42,052 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 08:30:42,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 08:30:42,071 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) [2022-01-18 08:30:42,077 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 [2022-01-18 08:30:42,100 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-01-18 08:30:42,100 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-01-18 08:30:42,100 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-01-18 08:30:42,100 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-01-18 08:30:42,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-18 08:30:42,100 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-18 08:30:42,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-18 08:30:42,101 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-18 08:30:42,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-18 08:30:42,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-18 08:30:42,101 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-18 08:30:42,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 08:30:42,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 08:30:42,102 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-18 08:30:42,187 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 08:30:42,189 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 08:30:42,305 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 08:30:42,310 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 08:30:42,310 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-18 08:30:42,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 08:30:42 BoogieIcfgContainer [2022-01-18 08:30:42,312 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 08:30:42,313 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 08:30:42,313 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 08:30:42,324 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 08:30:42,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.01 08:30:41" (1/3) ... [2022-01-18 08:30:42,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d2303cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 08:30:42, skipping insertion in model container [2022-01-18 08:30:42,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 08:30:41" (2/3) ... [2022-01-18 08:30:42,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d2303cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 08:30:42, skipping insertion in model container [2022-01-18 08:30:42,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 08:30:42" (3/3) ... [2022-01-18 08:30:42,326 INFO L111 eAbstractionObserver]: Analyzing ICFG triangular-longest-2.i [2022-01-18 08:30:42,330 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 08:30:42,330 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 08:30:42,330 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 08:30:42,330 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 08:30:42,382 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:30:42,382 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:30:42,382 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:30:42,382 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:30:42,387 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:30:42,387 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:30:42,387 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:30:42,387 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:30:42,388 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:30:42,388 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:30:42,388 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:30:42,388 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:30:42,389 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:30:42,389 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:30:42,389 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:30:42,389 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:30:42,389 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:30:42,389 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:30:42,390 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:30:42,390 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:30:42,390 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:30:42,390 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:30:42,394 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:30:42,394 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:30:42,395 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:30:42,395 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:30:42,395 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:30:42,395 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:30:42,396 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:30:42,396 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:30:42,396 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:30:42,396 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:30:42,396 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:30:42,397 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:30:42,397 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:30:42,397 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:30:42,397 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:30:42,397 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:30:42,397 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:30:42,398 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:30:42,398 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:30:42,398 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:30:42,399 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:30:42,399 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:30:42,399 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:30:42,399 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:30:42,400 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:30:42,400 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:30:42,400 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:30:42,400 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:30:42,400 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:30:42,400 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:30:42,400 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:30:42,401 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:30:42,401 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:30:42,401 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:30:42,403 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:30:42,404 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:30:42,404 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:30:42,404 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:30:42,404 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:30:42,404 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:30:42,406 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:30:42,407 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:30:42,407 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:30:42,412 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:30:42,412 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:30:42,413 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:30:42,413 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-01-18 08:30:42,445 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 08:30:42,450 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 [2022-01-18 08:30:42,450 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-18 08:30:42,460 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 72 places, 70 transitions, 150 flow [2022-01-18 08:30:42,536 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 783 states, 782 states have (on average 2.9271099744245523) internal successors, (2289), 782 states have internal predecessors, (2289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 08:30:42,540 INFO L276 IsEmpty]: Start isEmpty. Operand has 783 states, 782 states have (on average 2.9271099744245523) internal successors, (2289), 782 states have internal predecessors, (2289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 08:30:42,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-18 08:30:42,550 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 08:30:42,551 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 08:30:42,551 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 08:30:42,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 08:30:42,556 INFO L85 PathProgramCache]: Analyzing trace with hash 398220865, now seen corresponding path program 1 times [2022-01-18 08:30:42,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 08:30:42,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079962511] [2022-01-18 08:30:42,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 08:30:42,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 08:30:42,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 08:30:42,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 08:30:42,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 08:30:42,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079962511] [2022-01-18 08:30:42,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079962511] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 08:30:42,960 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 08:30:42,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 08:30:42,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611994539] [2022-01-18 08:30:42,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 08:30:42,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 08:30:42,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 08:30:43,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 08:30:43,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-18 08:30:43,004 INFO L87 Difference]: Start difference. First operand has 783 states, 782 states have (on average 2.9271099744245523) internal successors, (2289), 782 states have internal predecessors, (2289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 08:30:43,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 08:30:43,153 INFO L93 Difference]: Finished difference Result 1542 states and 4129 transitions. [2022-01-18 08:30:43,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 08:30:43,155 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-01-18 08:30:43,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 08:30:43,181 INFO L225 Difference]: With dead ends: 1542 [2022-01-18 08:30:43,181 INFO L226 Difference]: Without dead ends: 1245 [2022-01-18 08:30:43,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-01-18 08:30:43,191 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 156 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 08:30:43,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 303 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 08:30:43,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1245 states. [2022-01-18 08:30:43,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1245 to 945. [2022-01-18 08:30:43,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 945 states, 944 states have (on average 2.702330508474576) internal successors, (2551), 944 states have internal predecessors, (2551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 08:30:43,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 945 states to 945 states and 2551 transitions. [2022-01-18 08:30:43,286 INFO L78 Accepts]: Start accepts. Automaton has 945 states and 2551 transitions. Word has length 35 [2022-01-18 08:30:43,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 08:30:43,286 INFO L470 AbstractCegarLoop]: Abstraction has 945 states and 2551 transitions. [2022-01-18 08:30:43,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 08:30:43,287 INFO L276 IsEmpty]: Start isEmpty. Operand 945 states and 2551 transitions. [2022-01-18 08:30:43,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-18 08:30:43,291 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 08:30:43,291 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 08:30:43,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 08:30:43,291 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 08:30:43,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 08:30:43,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1832706688, now seen corresponding path program 1 times [2022-01-18 08:30:43,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 08:30:43,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230552919] [2022-01-18 08:30:43,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 08:30:43,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 08:30:43,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 08:30:43,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 08:30:43,454 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 08:30:43,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230552919] [2022-01-18 08:30:43,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230552919] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 08:30:43,454 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 08:30:43,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 08:30:43,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971513830] [2022-01-18 08:30:43,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 08:30:43,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 08:30:43,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 08:30:43,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 08:30:43,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-18 08:30:43,457 INFO L87 Difference]: Start difference. First operand 945 states and 2551 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 08:30:43,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 08:30:43,559 INFO L93 Difference]: Finished difference Result 1197 states and 3183 transitions. [2022-01-18 08:30:43,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 08:30:43,560 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-01-18 08:30:43,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 08:30:43,566 INFO L225 Difference]: With dead ends: 1197 [2022-01-18 08:30:43,566 INFO L226 Difference]: Without dead ends: 945 [2022-01-18 08:30:43,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-18 08:30:43,571 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 77 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 08:30:43,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 357 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 08:30:43,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945 states. [2022-01-18 08:30:43,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945 to 803. [2022-01-18 08:30:43,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 802 states have (on average 2.7219451371571073) internal successors, (2183), 802 states have internal predecessors, (2183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 08:30:43,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 2183 transitions. [2022-01-18 08:30:43,605 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 2183 transitions. Word has length 39 [2022-01-18 08:30:43,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 08:30:43,607 INFO L470 AbstractCegarLoop]: Abstraction has 803 states and 2183 transitions. [2022-01-18 08:30:43,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 08:30:43,607 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 2183 transitions. [2022-01-18 08:30:43,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-18 08:30:43,614 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 08:30:43,614 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 08:30:43,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 08:30:43,614 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 08:30:43,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 08:30:43,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1559123106, now seen corresponding path program 1 times [2022-01-18 08:30:43,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 08:30:43,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147238286] [2022-01-18 08:30:43,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 08:30:43,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 08:30:43,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 08:30:43,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 08:30:43,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 08:30:43,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147238286] [2022-01-18 08:30:43,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147238286] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 08:30:43,764 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 08:30:43,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 08:30:43,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936238984] [2022-01-18 08:30:43,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 08:30:43,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 08:30:43,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 08:30:43,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 08:30:43,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-18 08:30:43,766 INFO L87 Difference]: Start difference. First operand 803 states and 2183 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 08:30:43,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 08:30:43,892 INFO L93 Difference]: Finished difference Result 1945 states and 5271 transitions. [2022-01-18 08:30:43,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 08:30:43,893 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-01-18 08:30:43,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 08:30:43,901 INFO L225 Difference]: With dead ends: 1945 [2022-01-18 08:30:43,901 INFO L226 Difference]: Without dead ends: 1521 [2022-01-18 08:30:43,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-18 08:30:43,908 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 130 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 08:30:43,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 383 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 08:30:43,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1521 states. [2022-01-18 08:30:43,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1521 to 1021. [2022-01-18 08:30:43,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1021 states, 1020 states have (on average 2.7) internal successors, (2754), 1020 states have internal predecessors, (2754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 08:30:43,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1021 states to 1021 states and 2754 transitions. [2022-01-18 08:30:43,946 INFO L78 Accepts]: Start accepts. Automaton has 1021 states and 2754 transitions. Word has length 39 [2022-01-18 08:30:43,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 08:30:43,946 INFO L470 AbstractCegarLoop]: Abstraction has 1021 states and 2754 transitions. [2022-01-18 08:30:43,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 08:30:43,947 INFO L276 IsEmpty]: Start isEmpty. Operand 1021 states and 2754 transitions. [2022-01-18 08:30:43,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-18 08:30:43,948 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 08:30:43,948 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 08:30:43,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-18 08:30:43,949 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 08:30:43,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 08:30:43,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1227227950, now seen corresponding path program 2 times [2022-01-18 08:30:43,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 08:30:43,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62878453] [2022-01-18 08:30:43,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 08:30:43,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 08:30:43,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 08:30:44,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 08:30:44,085 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 08:30:44,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62878453] [2022-01-18 08:30:44,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62878453] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 08:30:44,087 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 08:30:44,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 08:30:44,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271904806] [2022-01-18 08:30:44,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 08:30:44,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 08:30:44,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 08:30:44,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 08:30:44,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-18 08:30:44,089 INFO L87 Difference]: Start difference. First operand 1021 states and 2754 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 08:30:44,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 08:30:44,151 INFO L93 Difference]: Finished difference Result 1341 states and 3466 transitions. [2022-01-18 08:30:44,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 08:30:44,151 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-01-18 08:30:44,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 08:30:44,157 INFO L225 Difference]: With dead ends: 1341 [2022-01-18 08:30:44,158 INFO L226 Difference]: Without dead ends: 1031 [2022-01-18 08:30:44,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-18 08:30:44,161 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 107 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 08:30:44,164 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 331 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 08:30:44,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2022-01-18 08:30:44,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 879. [2022-01-18 08:30:44,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 878 states have (on average 2.7004555808656034) internal successors, (2371), 878 states have internal predecessors, (2371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 08:30:44,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 2371 transitions. [2022-01-18 08:30:44,191 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 2371 transitions. Word has length 39 [2022-01-18 08:30:44,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 08:30:44,191 INFO L470 AbstractCegarLoop]: Abstraction has 879 states and 2371 transitions. [2022-01-18 08:30:44,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 08:30:44,192 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 2371 transitions. [2022-01-18 08:30:44,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-01-18 08:30:44,193 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 08:30:44,193 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 08:30:44,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-18 08:30:44,194 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 08:30:44,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 08:30:44,195 INFO L85 PathProgramCache]: Analyzing trace with hash -2144864227, now seen corresponding path program 1 times [2022-01-18 08:30:44,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 08:30:44,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684780628] [2022-01-18 08:30:44,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 08:30:44,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 08:30:44,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 08:30:44,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 08:30:44,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 08:30:44,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684780628] [2022-01-18 08:30:44,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684780628] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 08:30:44,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 08:30:44,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 08:30:44,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99828642] [2022-01-18 08:30:44,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 08:30:44,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 08:30:44,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 08:30:44,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 08:30:44,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-18 08:30:44,303 INFO L87 Difference]: Start difference. First operand 879 states and 2371 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 08:30:44,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 08:30:44,438 INFO L93 Difference]: Finished difference Result 1679 states and 4555 transitions. [2022-01-18 08:30:44,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 08:30:44,438 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2022-01-18 08:30:44,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 08:30:44,444 INFO L225 Difference]: With dead ends: 1679 [2022-01-18 08:30:44,444 INFO L226 Difference]: Without dead ends: 1169 [2022-01-18 08:30:44,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2022-01-18 08:30:44,445 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 218 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 08:30:44,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 359 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 08:30:44,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1169 states. [2022-01-18 08:30:44,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1169 to 925. [2022-01-18 08:30:44,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 925 states, 924 states have (on average 2.727272727272727) internal successors, (2520), 924 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 08:30:44,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 2520 transitions. [2022-01-18 08:30:44,496 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 2520 transitions. Word has length 43 [2022-01-18 08:30:44,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 08:30:44,497 INFO L470 AbstractCegarLoop]: Abstraction has 925 states and 2520 transitions. [2022-01-18 08:30:44,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 08:30:44,497 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 2520 transitions. [2022-01-18 08:30:44,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-18 08:30:44,498 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 08:30:44,498 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 08:30:44,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-18 08:30:44,499 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 08:30:44,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 08:30:44,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1916960660, now seen corresponding path program 1 times [2022-01-18 08:30:44,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 08:30:44,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907004620] [2022-01-18 08:30:44,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 08:30:44,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 08:30:44,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 08:30:44,576 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 08:30:44,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 08:30:44,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907004620] [2022-01-18 08:30:44,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907004620] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 08:30:44,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101904200] [2022-01-18 08:30:44,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 08:30:44,577 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 08:30:44,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 08:30:44,579 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) [2022-01-18 08:30:44,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-18 08:30:44,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 08:30:44,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 08:30:44,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 08:30:44,891 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 08:30:44,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 08:30:45,087 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 08:30:45,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101904200] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 08:30:45,087 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 08:30:45,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2022-01-18 08:30:45,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702801935] [2022-01-18 08:30:45,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 08:30:45,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 08:30:45,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 08:30:45,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 08:30:45,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-01-18 08:30:45,090 INFO L87 Difference]: Start difference. First operand 925 states and 2520 transitions. Second operand has 13 states, 13 states have (on average 6.6923076923076925) internal successors, (87), 13 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 08:30:45,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 08:30:45,471 INFO L93 Difference]: Finished difference Result 2809 states and 7614 transitions. [2022-01-18 08:30:45,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-18 08:30:45,471 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.6923076923076925) internal successors, (87), 13 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-01-18 08:30:45,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 08:30:45,479 INFO L225 Difference]: With dead ends: 2809 [2022-01-18 08:30:45,479 INFO L226 Difference]: Without dead ends: 1659 [2022-01-18 08:30:45,480 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=302, Invalid=754, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 08:30:45,480 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 488 mSDsluCounter, 895 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 980 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 08:30:45,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [488 Valid, 980 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 08:30:45,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1659 states. [2022-01-18 08:30:45,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1659 to 1544. [2022-01-18 08:30:45,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1544 states, 1543 states have (on average 2.73298768632534) internal successors, (4217), 1543 states have internal predecessors, (4217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 08:30:45,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1544 states to 1544 states and 4217 transitions. [2022-01-18 08:30:45,518 INFO L78 Accepts]: Start accepts. Automaton has 1544 states and 4217 transitions. Word has length 48 [2022-01-18 08:30:45,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 08:30:45,518 INFO L470 AbstractCegarLoop]: Abstraction has 1544 states and 4217 transitions. [2022-01-18 08:30:45,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.6923076923076925) internal successors, (87), 13 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 08:30:45,519 INFO L276 IsEmpty]: Start isEmpty. Operand 1544 states and 4217 transitions. [2022-01-18 08:30:45,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-18 08:30:45,521 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 08:30:45,521 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 08:30:45,546 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-18 08:30:45,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-01-18 08:30:45,740 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 08:30:45,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 08:30:45,740 INFO L85 PathProgramCache]: Analyzing trace with hash 748118096, now seen corresponding path program 1 times [2022-01-18 08:30:45,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 08:30:45,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682534026] [2022-01-18 08:30:45,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 08:30:45,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 08:30:45,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 08:30:45,841 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 08:30:45,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 08:30:45,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682534026] [2022-01-18 08:30:45,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682534026] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 08:30:45,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120810292] [2022-01-18 08:30:45,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 08:30:45,841 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 08:30:45,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 08:30:45,842 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) [2022-01-18 08:30:45,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-18 08:30:45,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 08:30:45,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 08:30:45,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 08:30:46,036 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 08:30:46,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 08:30:46,264 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 08:30:46,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120810292] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 08:30:46,264 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 08:30:46,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2022-01-18 08:30:46,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605316675] [2022-01-18 08:30:46,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 08:30:46,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 08:30:46,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 08:30:46,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 08:30:46,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-01-18 08:30:46,266 INFO L87 Difference]: Start difference. First operand 1544 states and 4217 transitions. Second operand has 16 states, 16 states have (on average 6.125) internal successors, (98), 16 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 08:30:46,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 08:30:46,727 INFO L93 Difference]: Finished difference Result 3796 states and 10320 transitions. [2022-01-18 08:30:46,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-18 08:30:46,728 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.125) internal successors, (98), 16 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-01-18 08:30:46,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 08:30:46,740 INFO L225 Difference]: With dead ends: 3796 [2022-01-18 08:30:46,740 INFO L226 Difference]: Without dead ends: 2469 [2022-01-18 08:30:46,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=415, Invalid=1067, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 08:30:46,741 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 761 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 08:30:46,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [761 Valid, 761 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 08:30:46,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2469 states. [2022-01-18 08:30:46,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2469 to 1450. [2022-01-18 08:30:46,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1450 states, 1449 states have (on average 2.712215320910973) internal successors, (3930), 1449 states have internal predecessors, (3930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 08:30:46,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1450 states to 1450 states and 3930 transitions. [2022-01-18 08:30:46,819 INFO L78 Accepts]: Start accepts. Automaton has 1450 states and 3930 transitions. Word has length 53 [2022-01-18 08:30:46,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 08:30:46,820 INFO L470 AbstractCegarLoop]: Abstraction has 1450 states and 3930 transitions. [2022-01-18 08:30:46,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.125) internal successors, (98), 16 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 08:30:46,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states and 3930 transitions. [2022-01-18 08:30:46,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-18 08:30:46,823 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 08:30:46,823 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 08:30:46,848 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-01-18 08:30:47,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-01-18 08:30:47,044 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 08:30:47,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 08:30:47,044 INFO L85 PathProgramCache]: Analyzing trace with hash 245398254, now seen corresponding path program 2 times [2022-01-18 08:30:47,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 08:30:47,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159248967] [2022-01-18 08:30:47,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 08:30:47,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 08:30:47,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 08:30:47,192 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 08:30:47,192 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 08:30:47,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159248967] [2022-01-18 08:30:47,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159248967] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 08:30:47,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211688016] [2022-01-18 08:30:47,193 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 08:30:47,193 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 08:30:47,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 08:30:47,194 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) [2022-01-18 08:30:47,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-18 08:30:47,274 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 08:30:47,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 08:30:47,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-18 08:30:47,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 08:30:47,443 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 08:30:47,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 08:30:47,683 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 08:30:47,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211688016] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 08:30:47,684 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 08:30:47,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 23 [2022-01-18 08:30:47,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611848313] [2022-01-18 08:30:47,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 08:30:47,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-18 08:30:47,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 08:30:47,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-18 08:30:47,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2022-01-18 08:30:47,686 INFO L87 Difference]: Start difference. First operand 1450 states and 3930 transitions. Second operand has 23 states, 23 states have (on average 5.956521739130435) internal successors, (137), 23 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 08:30:48,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 08:30:48,585 INFO L93 Difference]: Finished difference Result 5163 states and 14194 transitions. [2022-01-18 08:30:48,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 08:30:48,586 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.956521739130435) internal successors, (137), 23 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-01-18 08:30:48,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 08:30:48,599 INFO L225 Difference]: With dead ends: 5163 [2022-01-18 08:30:48,600 INFO L226 Difference]: Without dead ends: 3059 [2022-01-18 08:30:48,601 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1285 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1133, Invalid=3027, Unknown=0, NotChecked=0, Total=4160 [2022-01-18 08:30:48,601 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 1186 mSDsluCounter, 1123 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1186 SdHoareTripleChecker+Valid, 1238 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 08:30:48,602 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1186 Valid, 1238 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 08:30:48,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3059 states. [2022-01-18 08:30:48,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3059 to 2269. [2022-01-18 08:30:48,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2269 states, 2268 states have (on average 2.736772486772487) internal successors, (6207), 2268 states have internal predecessors, (6207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 08:30:48,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2269 states to 2269 states and 6207 transitions. [2022-01-18 08:30:48,660 INFO L78 Accepts]: Start accepts. Automaton has 2269 states and 6207 transitions. Word has length 73 [2022-01-18 08:30:48,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 08:30:48,661 INFO L470 AbstractCegarLoop]: Abstraction has 2269 states and 6207 transitions. [2022-01-18 08:30:48,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.956521739130435) internal successors, (137), 23 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 08:30:48,661 INFO L276 IsEmpty]: Start isEmpty. Operand 2269 states and 6207 transitions. [2022-01-18 08:30:48,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-01-18 08:30:48,665 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 08:30:48,665 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 08:30:48,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-18 08:30:48,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 08:30:48,880 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 08:30:48,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 08:30:48,880 INFO L85 PathProgramCache]: Analyzing trace with hash 222177227, now seen corresponding path program 3 times [2022-01-18 08:30:48,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 08:30:48,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550238522] [2022-01-18 08:30:48,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 08:30:48,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 08:30:48,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 08:30:49,089 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 08:30:49,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 08:30:49,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550238522] [2022-01-18 08:30:49,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550238522] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 08:30:49,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27611631] [2022-01-18 08:30:49,090 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 08:30:49,090 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 08:30:49,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 08:30:49,092 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) [2022-01-18 08:30:49,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-18 08:30:49,174 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-01-18 08:30:49,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 08:30:49,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 21 conjunts are in the unsatisfiable core [2022-01-18 08:30:49,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 08:30:49,384 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 08:30:49,385 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 08:30:49,884 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 08:30:49,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27611631] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 08:30:49,884 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 08:30:49,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 36 [2022-01-18 08:30:49,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393334282] [2022-01-18 08:30:49,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 08:30:49,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 08:30:49,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 08:30:49,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 08:30:49,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=976, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 08:30:49,886 INFO L87 Difference]: Start difference. First operand 2269 states and 6207 transitions. Second operand has 36 states, 36 states have (on average 5.5) internal successors, (198), 36 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 08:30:51,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 08:30:51,715 INFO L93 Difference]: Finished difference Result 8561 states and 23670 transitions. [2022-01-18 08:30:51,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-01-18 08:30:51,716 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.5) internal successors, (198), 36 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2022-01-18 08:30:51,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 08:30:51,738 INFO L225 Difference]: With dead ends: 8561 [2022-01-18 08:30:51,739 INFO L226 Difference]: Without dead ends: 5034 [2022-01-18 08:30:51,742 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3634 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2959, Invalid=8383, Unknown=0, NotChecked=0, Total=11342 [2022-01-18 08:30:51,743 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 2701 mSDsluCounter, 1583 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 264 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2701 SdHoareTripleChecker+Valid, 1678 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 264 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 08:30:51,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2701 Valid, 1678 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [264 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 08:30:51,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5034 states. [2022-01-18 08:30:51,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5034 to 3450. [2022-01-18 08:30:51,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3450 states, 3449 states have (on average 2.734125833574949) internal successors, (9430), 3449 states have internal predecessors, (9430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 08:30:51,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3450 states to 3450 states and 9430 transitions. [2022-01-18 08:30:51,833 INFO L78 Accepts]: Start accepts. Automaton has 3450 states and 9430 transitions. Word has length 103 [2022-01-18 08:30:51,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 08:30:51,833 INFO L470 AbstractCegarLoop]: Abstraction has 3450 states and 9430 transitions. [2022-01-18 08:30:51,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 5.5) internal successors, (198), 36 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 08:30:51,834 INFO L276 IsEmpty]: Start isEmpty. Operand 3450 states and 9430 transitions. [2022-01-18 08:30:51,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-01-18 08:30:51,840 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 08:30:51,841 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 08:30:51,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-18 08:30:52,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 08:30:52,064 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 08:30:52,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 08:30:52,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1908104056, now seen corresponding path program 4 times [2022-01-18 08:30:52,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 08:30:52,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859808873] [2022-01-18 08:30:52,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 08:30:52,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 08:30:52,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 08:30:52,541 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 08:30:52,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 08:30:52,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859808873] [2022-01-18 08:30:52,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859808873] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 08:30:52,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230746349] [2022-01-18 08:30:52,542 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 08:30:52,542 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 08:30:52,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 08:30:52,543 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) [2022-01-18 08:30:52,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-18 08:30:52,630 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 08:30:52,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 08:30:52,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 34 conjunts are in the unsatisfiable core [2022-01-18 08:30:52,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 08:30:52,984 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 08:30:52,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 08:30:53,658 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 08:30:53,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230746349] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 08:30:53,658 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 08:30:53,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 50 [2022-01-18 08:30:53,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883355848] [2022-01-18 08:30:53,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 08:30:53,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-01-18 08:30:53,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 08:30:53,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-01-18 08:30:53,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=552, Invalid=1898, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 08:30:53,661 INFO L87 Difference]: Start difference. First operand 3450 states and 9430 transitions. Second operand has 50 states, 50 states have (on average 5.56) internal successors, (278), 50 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 08:30:56,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 08:30:56,400 INFO L93 Difference]: Finished difference Result 11083 states and 30570 transitions. [2022-01-18 08:30:56,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-01-18 08:30:56,400 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 5.56) internal successors, (278), 50 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 173 [2022-01-18 08:30:56,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 08:30:56,420 INFO L225 Difference]: With dead ends: 11083 [2022-01-18 08:30:56,420 INFO L226 Difference]: Without dead ends: 7659 [2022-01-18 08:30:56,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 328 SyntacticMatches, 1 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7548 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=6101, Invalid=16249, Unknown=0, NotChecked=0, Total=22350 [2022-01-18 08:30:56,426 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 3186 mSDsluCounter, 1871 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 358 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3186 SdHoareTripleChecker+Valid, 1959 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 358 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 08:30:56,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3186 Valid, 1959 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [358 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 08:30:56,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7659 states. [2022-01-18 08:30:56,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7659 to 4869. [2022-01-18 08:30:56,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4869 states, 4868 states have (on average 2.743837304847987) internal successors, (13357), 4868 states have internal predecessors, (13357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 08:30:56,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4869 states to 4869 states and 13357 transitions. [2022-01-18 08:30:56,601 INFO L78 Accepts]: Start accepts. Automaton has 4869 states and 13357 transitions. Word has length 173 [2022-01-18 08:30:56,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 08:30:56,602 INFO L470 AbstractCegarLoop]: Abstraction has 4869 states and 13357 transitions. [2022-01-18 08:30:56,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 5.56) internal successors, (278), 50 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 08:30:56,603 INFO L276 IsEmpty]: Start isEmpty. Operand 4869 states and 13357 transitions. [2022-01-18 08:30:56,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-01-18 08:30:56,617 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 08:30:56,617 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 08:30:56,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-18 08:30:56,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-01-18 08:30:56,836 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 08:30:56,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 08:30:56,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1917241726, now seen corresponding path program 5 times [2022-01-18 08:30:56,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 08:30:56,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798255152] [2022-01-18 08:30:56,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 08:30:56,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 08:30:56,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-18 08:30:56,906 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-18 08:30:56,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-18 08:30:57,035 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-18 08:30:57,036 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-18 08:30:57,037 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-01-18 08:30:57,039 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-01-18 08:30:57,039 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-01-18 08:30:57,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-18 08:30:57,042 INFO L732 BasicCegarLoop]: Path program histogram: [5, 2, 1, 1, 1, 1] [2022-01-18 08:30:57,046 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-18 08:30:57,046 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 08:30:57,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 08:30:57 BasicIcfg [2022-01-18 08:30:57,200 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 08:30:57,201 INFO L158 Benchmark]: Toolchain (without parser) took 15670.18ms. Allocated memory was 373.3MB in the beginning and 601.9MB in the end (delta: 228.6MB). Free memory was 317.3MB in the beginning and 426.9MB in the end (delta: -109.7MB). Peak memory consumption was 122.0MB. Max. memory is 16.0GB. [2022-01-18 08:30:57,201 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 373.3MB. Free memory is still 335.2MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 08:30:57,201 INFO L158 Benchmark]: CACSL2BoogieTranslator took 424.86ms. Allocated memory is still 373.3MB. Free memory was 317.0MB in the beginning and 335.8MB in the end (delta: -18.8MB). Peak memory consumption was 16.0MB. Max. memory is 16.0GB. [2022-01-18 08:30:57,201 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.40ms. Allocated memory is still 373.3MB. Free memory was 335.8MB in the beginning and 334.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 08:30:57,202 INFO L158 Benchmark]: Boogie Preprocessor took 34.75ms. Allocated memory is still 373.3MB. Free memory was 334.8MB in the beginning and 332.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 08:30:57,202 INFO L158 Benchmark]: RCFGBuilder took 266.03ms. Allocated memory is still 373.3MB. Free memory was 332.7MB in the beginning and 321.2MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2022-01-18 08:30:57,203 INFO L158 Benchmark]: TraceAbstraction took 14887.35ms. Allocated memory was 373.3MB in the beginning and 601.9MB in the end (delta: 228.6MB). Free memory was 320.1MB in the beginning and 426.9MB in the end (delta: -106.8MB). Peak memory consumption was 124.9MB. Max. memory is 16.0GB. [2022-01-18 08:30:57,204 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 373.3MB. Free memory is still 335.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 424.86ms. Allocated memory is still 373.3MB. Free memory was 317.0MB in the beginning and 335.8MB in the end (delta: -18.8MB). Peak memory consumption was 16.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 52.40ms. Allocated memory is still 373.3MB. Free memory was 335.8MB in the beginning and 334.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. * Boogie Preprocessor took 34.75ms. Allocated memory is still 373.3MB. Free memory was 334.8MB in the beginning and 332.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 266.03ms. Allocated memory is still 373.3MB. Free memory was 332.7MB in the beginning and 321.2MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 14887.35ms. Allocated memory was 373.3MB in the beginning and 601.9MB in the end (delta: 228.6MB). Free memory was 320.1MB in the beginning and 426.9MB in the end (delta: -106.8MB). Peak memory consumption was 124.9MB. Max. memory is 16.0GB. * 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 - CounterExampleResult [Line: 722]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L694] 0 int i = 3, j = 6; VAL [i=3, j=6] [L712] 0 pthread_t id1, id2; VAL [\old(argc)=49, argc=49, argv={51:50}, argv={51:50}, i=3, id1={5:0}, id2={3:0}, j=6] [L713] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [\old(argc)=49, arg={0:0}, argc=49, argv={51:50}, argv={51:50}, i=3, id1={5:0}, id2={3:0}, j=6, pthread_create(&id1, ((void *)0), t1, ((void *)0))=6] [L696] 1 int k = 0; VAL [arg={0:0}, arg={0:0}, i=3, j=6, k=0] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, i=3, j=6, k=0] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, i=7, j=6, k=0] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, i=7, j=6, k=1, k++=0] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, i=7, j=6, k=1] [L714] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [\old(argc)=49, arg={0:0}, arg={0:0}, arg={0:0}, argc=49, argv={51:50}, argv={51:50}, i=7, id1={5:0}, id2={3:0}, j=6, k=1, pthread_create(&id2, ((void *)0), t2, ((void *)0))=7] [L704] 2 int k = 0; VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=1, k=0] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=1, k=0] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=0, k=1] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=1] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=1, k=1] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=1] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=1, k=2] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=2] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=2, k=2] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=2, k=3] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=2, k=3] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=3] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=3, k=3] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=3, k=4] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=3] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=4] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=4, k=4] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=4, k=5] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=4] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=5] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=5] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=5, k=5] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=5, k=5] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=6, k=5] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=5, k=6] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=6, k=6] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=6, k=6] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=18, k=6, k=6] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=6, k=6] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=6, k=7] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=6, k=7] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=7, k=7] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=7, k=7] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=20, k=7, k=7] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=7, k=7] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=7, k=8] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=7, k=8] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=8, k=8] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=8, k=8] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=22, k=8, k=8] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=8, k=8] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=9, k=8] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=8, k=9] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=9, k=9] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=9, k=9] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=24, k=9, k=9] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=9, k=9] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=9, k=10] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=10, k=9] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=10, k=10] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=10, k=10] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=27, j=26, k=10, k=10] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=27, j=28, k=10, k=10] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=27, j=28, k=10, k=11] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=27, j=28, k=11, k=10] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=27, j=28, k=11, k=11] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=27, j=28, k=11, k=11] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=29, j=28, k=11, k=11] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=29, j=30, k=11, k=11] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=29, j=30, k=11, k=12] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=29, j=30, k=11, k=12] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=29, j=30, k=12, k=12] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=29, j=30, k=12, k=12] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=31, j=30, k=12, k=12] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=31, j=32, k=12, k=12] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=31, j=32, k=13, k=12] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=31, j=32, k=13, k=12] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=31, j=32, k=13, k=13] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=31, j=32, k=13, k=13] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=33, j=32, k=13, k=13] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=33, j=34, k=13, k=13] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=33, j=34, k=14, k=13] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=33, j=34, k=14, k=13] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=33, j=34, k=14, k=14] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=33, j=34, k=14, k=14] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=35, j=34, k=14, k=14] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=35, j=36, k=14, k=14] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=35, j=36, k=14, k=15] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=35, j=36, k=14, k=15] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=35, j=36, k=15, k=15] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=35, j=36, k=15, k=15] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=37, j=36, k=15, k=15] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=37, j=38, k=15, k=15] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=37, j=38, k=16, k=15] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=37, j=38, k=15, k=16] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=37, j=38, k=16, k=16] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=37, j=38, k=16, k=16] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=39, j=38, k=16, k=16] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=39, j=40, k=16, k=16] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=39, j=40, k=16, k=17] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=39, j=40, k=16, k=17] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=39, j=40, k=17, k=17] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=39, j=40, k=17, k=17] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=41, j=40, k=17, k=17] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=41, j=42, k=17, k=17] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=41, j=42, k=17, k=18] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=41, j=42, k=18, k=17] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=41, j=42, k=18, k=18] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=41, j=42, k=18, k=18] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=43, j=42, k=18, k=18] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=43, j=44, k=18, k=18] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=43, j=44, k=18, k=19] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=43, j=44, k=18, k=19] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=43, j=44, k=19, k=19] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=43, j=44, k=19, k=19] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=45, j=44, k=19, k=19] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=45, j=46, k=19, k=19] [L716] 0 int condI = i >= (2*20 +6); VAL [\old(argc)=49, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=49, argv={51:50}, argv={51:50}, condI=0, i=45, id1={5:0}, id2={3:0}, j=46, k=19, k=19] [L719] 0 int condJ = j >= (2*20 +6); VAL [\old(argc)=49, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=49, argv={51:50}, argv={51:50}, condI=0, condJ=1, i=45, id1={5:0}, id2={3:0}, j=46, k=19, k=19] [L721] COND TRUE 0 condI || condJ VAL [\old(argc)=49, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=49, argv={51:50}, argv={51:50}, condI=0, condJ=1, i=45, id1={5:0}, id2={3:0}, j=46, k=19, k=19] [L722] 0 reach_error() VAL [\old(argc)=49, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=49, argv={51:50}, argv={51:50}, condI=0, condJ=1, i=45, id1={5:0}, id2={3:0}, j=46, k=19, k=19] - UnprovableResult [Line: 713]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 88 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 14.6s, OverallIterations: 11, TraceHistogramMax: 20, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.1s, AutomataDifference: 7.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9010 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9010 mSDsluCounter, 8349 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7456 mSDsCounter, 905 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1478 IncrementalHoareTripleChecker+Invalid, 2383 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 905 mSolverCounterUnsat, 973 mSDtfsCounter, 1478 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1280 GetRequests, 852 SyntacticMatches, 2 SemanticMatches, 426 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13051 ImplicationChecksByTransitivity, 6.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4869occurred in iteration=10, InterpolantAutomatonStates: 332, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 10 MinimizatonAttempts, 7636 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 1328 NumberOfCodeBlocks, 1328 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 1525 ConstructedInterpolants, 0 QuantifiedInterpolants, 4644 SizeOfPredicates, 62 NumberOfNonLiveVariables, 1016 ConjunctsInSsa, 89 ConjunctsInUnsatCore, 20 InterpolantComputations, 5 PerfectInterpolantSequences, 0/3162 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 proved your program to be incorrect! [2022-01-18 08:30:57,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...