/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-wmm/safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bc79526 [2022-01-18 09:15:50,556 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 09:15:50,558 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 09:15:50,619 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-18 09:15:50,648 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-18 09:15:50,649 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-18 09:15:50,650 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-18 09:15:50,652 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-18 09:15:50,652 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-18 09:15:50,653 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-18 09:15:50,655 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-18 09:15:50,660 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-18 09:15:50,661 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-18 09:15:50,662 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-18 09:15:50,663 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-18 09:15:50,664 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-18 09:15:50,669 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-18 09:15:50,674 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 09:15:50,674 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 09:15:50,675 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 09:15:50,678 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 09:15:50,702 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 09:15:50,702 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 09:15:50,703 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 09:15:50,703 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 09:15:50,704 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 09:15:50,704 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 09:15:50,704 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 09:15:50,704 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 09:15:50,704 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 09:15:50,704 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 09:15:50,705 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 09:15:50,705 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 09:15:50,705 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 09:15:50,705 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 09:15:50,705 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 09:15:50,705 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 09:15:50,705 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 09:15:50,705 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 09:15:50,706 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 09:15:50,706 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 09:15:50,706 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 09:15:50,706 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 09:15:50,706 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 09:15:50,706 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 09:15:50,707 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 09:15:50,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 09:15:50,707 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 09:15:50,707 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 09:15:50,707 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 09:15:50,707 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 09:15:50,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 09:15:50,707 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 09:15:50,708 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 09:15:50,708 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2022-01-18 09:15:50,708 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 09:15:50,888 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 09:15:50,908 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 09:15:50,909 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 09:15:50,910 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-18 09:15:50,911 INFO L275 PluginConnector]: CDTParser initialized [2022-01-18 09:15:50,911 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-01-18 09:15:50,969 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e774b282b/a464ee6e7c7044f8b090111c06c04ffe/FLAGac2469cc7 [2022-01-18 09:15:51,340 INFO L306 CDTParser]: Found 1 translation units. [2022-01-18 09:15:51,340 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-01-18 09:15:51,348 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e774b282b/a464ee6e7c7044f8b090111c06c04ffe/FLAGac2469cc7 [2022-01-18 09:15:51,703 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e774b282b/a464ee6e7c7044f8b090111c06c04ffe [2022-01-18 09:15:51,705 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 09:15:51,706 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-18 09:15:51,708 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-18 09:15:51,708 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-18 09:15:51,710 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-18 09:15:51,710 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 09:15:51" (1/1) ... [2022-01-18 09:15:51,712 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c4cce6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 09:15:51, skipping insertion in model container [2022-01-18 09:15:51,712 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 09:15:51" (1/1) ... [2022-01-18 09:15:51,716 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-18 09:15:51,755 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-18 09:15:51,911 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-wmm/safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-01-18 09:15:52,035 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 09:15:52,040 INFO L203 MainTranslator]: Completed pre-run [2022-01-18 09:15:52,048 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-wmm/safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-01-18 09:15:52,077 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 09:15:52,102 INFO L208 MainTranslator]: Completed translation [2022-01-18 09:15:52,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 09:15:52 WrapperNode [2022-01-18 09:15:52,102 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-18 09:15:52,103 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 09:15:52,103 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 09:15:52,103 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 09:15:52,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 09:15:52" (1/1) ... [2022-01-18 09:15:52,129 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 09:15:52" (1/1) ... [2022-01-18 09:15:52,144 INFO L137 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2022-01-18 09:15:52,144 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 09:15:52,145 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 09:15:52,145 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 09:15:52,145 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 09:15:52,150 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 09:15:52" (1/1) ... [2022-01-18 09:15:52,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 09:15:52" (1/1) ... [2022-01-18 09:15:52,159 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 09:15:52" (1/1) ... [2022-01-18 09:15:52,159 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 09:15:52" (1/1) ... [2022-01-18 09:15:52,166 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 09:15:52" (1/1) ... [2022-01-18 09:15:52,167 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 09:15:52" (1/1) ... [2022-01-18 09:15:52,168 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 09:15:52" (1/1) ... [2022-01-18 09:15:52,169 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 09:15:52,169 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 09:15:52,170 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 09:15:52,170 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 09:15:52,175 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 09:15:52" (1/1) ... [2022-01-18 09:15:52,180 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 09:15:52,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 09:15:52,196 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 09:15:52,202 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 09:15:52,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-18 09:15:52,224 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-18 09:15:52,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-18 09:15:52,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-18 09:15:52,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-18 09:15:52,224 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-01-18 09:15:52,224 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-01-18 09:15:52,224 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-01-18 09:15:52,224 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-01-18 09:15:52,225 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-01-18 09:15:52,225 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-01-18 09:15:52,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-18 09:15:52,225 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-18 09:15:52,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 09:15:52,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 09:15:52,226 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 09:15:52,347 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 09:15:52,348 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 09:15:52,471 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 09:15:52,476 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 09:15:52,476 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-18 09:15:52,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 09:15:52 BoogieIcfgContainer [2022-01-18 09:15:52,477 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 09:15:52,478 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 09:15:52,478 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 09:15:52,492 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 09:15:52,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.01 09:15:51" (1/3) ... [2022-01-18 09:15:52,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76d0b2cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 09:15:52, skipping insertion in model container [2022-01-18 09:15:52,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 09:15:52" (2/3) ... [2022-01-18 09:15:52,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76d0b2cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 09:15:52, skipping insertion in model container [2022-01-18 09:15:52,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 09:15:52" (3/3) ... [2022-01-18 09:15:52,494 INFO L111 eAbstractionObserver]: Analyzing ICFG safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-01-18 09:15:52,497 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 09:15:52,497 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 09:15:52,497 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 09:15:52,497 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 09:15:52,517 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:52,517 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:52,517 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:52,517 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:52,518 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:52,518 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:52,518 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:52,518 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:52,518 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:52,518 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:52,519 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:52,519 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:52,519 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:52,519 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:52,519 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:52,519 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:52,519 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:52,520 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:52,520 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:52,520 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:52,520 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:52,520 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:52,520 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:52,520 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:52,521 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:52,521 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:52,521 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:52,521 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:52,521 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:52,521 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:52,521 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:52,521 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:52,522 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:52,522 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:52,522 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:52,522 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:52,524 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:52,524 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:52,524 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:52,524 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:52,525 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:52,526 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:52,526 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:52,526 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:52,526 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:52,526 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:52,527 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:52,527 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:52,527 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-01-18 09:15:52,552 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 09:15:52,559 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 09:15:52,559 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-18 09:15:52,565 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 99 places, 91 transitions, 197 flow [2022-01-18 09:15:52,781 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 5660 states, 5659 states have (on average 3.477822936914649) internal successors, (19681), 5659 states have internal predecessors, (19681), 0 states have call successors, (0), 0 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 09:15:52,794 INFO L276 IsEmpty]: Start isEmpty. Operand has 5660 states, 5659 states have (on average 3.477822936914649) internal successors, (19681), 5659 states have internal predecessors, (19681), 0 states have call successors, (0), 0 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 09:15:52,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-18 09:15:52,817 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:15:52,817 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:15:52,818 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 09:15:52,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:15:52,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1360834222, now seen corresponding path program 1 times [2022-01-18 09:15:52,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:15:52,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339696168] [2022-01-18 09:15:52,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:15:52,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:15:52,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:15:53,169 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 09:15:53,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:15:53,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339696168] [2022-01-18 09:15:53,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339696168] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:15:53,170 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:15:53,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 09:15:53,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117058011] [2022-01-18 09:15:53,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:15:53,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 09:15:53,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:15:53,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 09:15:53,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-18 09:15:53,221 INFO L87 Difference]: Start difference. First operand has 5660 states, 5659 states have (on average 3.477822936914649) internal successors, (19681), 5659 states have internal predecessors, (19681), 0 states have call successors, (0), 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 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 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 09:15:53,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:15:53,398 INFO L93 Difference]: Finished difference Result 6542 states and 22222 transitions. [2022-01-18 09:15:53,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 09:15:53,400 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2022-01-18 09:15:53,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:15:53,444 INFO L225 Difference]: With dead ends: 6542 [2022-01-18 09:15:53,445 INFO L226 Difference]: Without dead ends: 4778 [2022-01-18 09:15:53,447 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-18 09:15:53,450 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 110 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 09:15:53,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 456 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 09:15:53,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4778 states. [2022-01-18 09:15:53,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4778 to 4778. [2022-01-18 09:15:53,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4778 states, 4777 states have (on average 3.38580699183588) internal successors, (16174), 4777 states have internal predecessors, (16174), 0 states have call successors, (0), 0 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 09:15:53,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4778 states to 4778 states and 16174 transitions. [2022-01-18 09:15:53,680 INFO L78 Accepts]: Start accepts. Automaton has 4778 states and 16174 transitions. Word has length 55 [2022-01-18 09:15:53,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:15:53,681 INFO L470 AbstractCegarLoop]: Abstraction has 4778 states and 16174 transitions. [2022-01-18 09:15:53,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 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 09:15:53,681 INFO L276 IsEmpty]: Start isEmpty. Operand 4778 states and 16174 transitions. [2022-01-18 09:15:53,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-18 09:15:53,695 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:15:53,695 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:15:53,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 09:15:53,696 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 09:15:53,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:15:53,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1654838479, now seen corresponding path program 1 times [2022-01-18 09:15:53,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:15:53,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139187748] [2022-01-18 09:15:53,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:15:53,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:15:53,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:15:53,877 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 09:15:53,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:15:53,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139187748] [2022-01-18 09:15:53,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139187748] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:15:53,878 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:15:53,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 09:15:53,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175744019] [2022-01-18 09:15:53,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:15:53,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 09:15:53,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:15:53,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 09:15:53,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-18 09:15:53,880 INFO L87 Difference]: Start difference. First operand 4778 states and 16174 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 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 09:15:54,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:15:54,089 INFO L93 Difference]: Finished difference Result 6738 states and 22677 transitions. [2022-01-18 09:15:54,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 09:15:54,089 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2022-01-18 09:15:54,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:15:54,107 INFO L225 Difference]: With dead ends: 6738 [2022-01-18 09:15:54,107 INFO L226 Difference]: Without dead ends: 3588 [2022-01-18 09:15:54,110 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-01-18 09:15:54,111 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 180 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 09:15:54,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [180 Valid, 467 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 09:15:54,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3588 states. [2022-01-18 09:15:54,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3588 to 3588. [2022-01-18 09:15:54,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3588 states, 3587 states have (on average 3.276275439085587) internal successors, (11752), 3587 states have internal predecessors, (11752), 0 states have call successors, (0), 0 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 09:15:54,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3588 states to 3588 states and 11752 transitions. [2022-01-18 09:15:54,312 INFO L78 Accepts]: Start accepts. Automaton has 3588 states and 11752 transitions. Word has length 57 [2022-01-18 09:15:54,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:15:54,313 INFO L470 AbstractCegarLoop]: Abstraction has 3588 states and 11752 transitions. [2022-01-18 09:15:54,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 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 09:15:54,314 INFO L276 IsEmpty]: Start isEmpty. Operand 3588 states and 11752 transitions. [2022-01-18 09:15:54,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-18 09:15:54,320 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:15:54,320 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:15:54,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 09:15:54,321 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 09:15:54,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:15:54,321 INFO L85 PathProgramCache]: Analyzing trace with hash 609069614, now seen corresponding path program 1 times [2022-01-18 09:15:54,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:15:54,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197036927] [2022-01-18 09:15:54,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:15:54,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:15:54,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:15:54,445 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 09:15:54,445 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:15:54,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197036927] [2022-01-18 09:15:54,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197036927] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:15:54,446 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:15:54,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 09:15:54,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361718437] [2022-01-18 09:15:54,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:15:54,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 09:15:54,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:15:54,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 09:15:54,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-18 09:15:54,447 INFO L87 Difference]: Start difference. First operand 3588 states and 11752 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 09:15:54,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:15:54,551 INFO L93 Difference]: Finished difference Result 4428 states and 14361 transitions. [2022-01-18 09:15:54,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 09:15:54,551 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2022-01-18 09:15:54,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:15:54,568 INFO L225 Difference]: With dead ends: 4428 [2022-01-18 09:15:54,568 INFO L226 Difference]: Without dead ends: 3308 [2022-01-18 09:15:54,568 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 09:15:54,569 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 135 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 09:15:54,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 349 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 09:15:54,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3308 states. [2022-01-18 09:15:54,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3308 to 3308. [2022-01-18 09:15:54,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3308 states, 3307 states have (on average 3.231932264892652) internal successors, (10688), 3307 states have internal predecessors, (10688), 0 states have call successors, (0), 0 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 09:15:54,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3308 states to 3308 states and 10688 transitions. [2022-01-18 09:15:54,693 INFO L78 Accepts]: Start accepts. Automaton has 3308 states and 10688 transitions. Word has length 59 [2022-01-18 09:15:54,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:15:54,694 INFO L470 AbstractCegarLoop]: Abstraction has 3308 states and 10688 transitions. [2022-01-18 09:15:54,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 09:15:54,694 INFO L276 IsEmpty]: Start isEmpty. Operand 3308 states and 10688 transitions. [2022-01-18 09:15:54,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-18 09:15:54,701 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:15:54,701 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:15:54,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-18 09:15:54,702 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 09:15:54,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:15:54,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1073488480, now seen corresponding path program 1 times [2022-01-18 09:15:54,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:15:54,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261661249] [2022-01-18 09:15:54,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:15:54,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:15:54,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:15:54,772 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 09:15:54,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:15:54,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261661249] [2022-01-18 09:15:54,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261661249] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:15:54,773 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:15:54,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 09:15:54,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212121921] [2022-01-18 09:15:54,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:15:54,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 09:15:54,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:15:54,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 09:15:54,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-18 09:15:54,774 INFO L87 Difference]: Start difference. First operand 3308 states and 10688 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 09:15:54,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:15:54,892 INFO L93 Difference]: Finished difference Result 3386 states and 10653 transitions. [2022-01-18 09:15:54,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 09:15:54,893 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-01-18 09:15:54,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:15:54,902 INFO L225 Difference]: With dead ends: 3386 [2022-01-18 09:15:54,902 INFO L226 Difference]: Without dead ends: 2426 [2022-01-18 09:15:54,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2022-01-18 09:15:54,903 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 219 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 09:15:54,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [219 Valid, 406 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 09:15:54,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2426 states. [2022-01-18 09:15:54,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2426 to 2426. [2022-01-18 09:15:54,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2426 states, 2425 states have (on average 3.091134020618557) internal successors, (7496), 2425 states have internal predecessors, (7496), 0 states have call successors, (0), 0 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 09:15:54,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2426 states to 2426 states and 7496 transitions. [2022-01-18 09:15:54,950 INFO L78 Accepts]: Start accepts. Automaton has 2426 states and 7496 transitions. Word has length 60 [2022-01-18 09:15:54,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:15:54,952 INFO L470 AbstractCegarLoop]: Abstraction has 2426 states and 7496 transitions. [2022-01-18 09:15:54,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 09:15:54,953 INFO L276 IsEmpty]: Start isEmpty. Operand 2426 states and 7496 transitions. [2022-01-18 09:15:54,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-18 09:15:54,959 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:15:54,959 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:15:54,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-18 09:15:54,959 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 09:15:54,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:15:54,961 INFO L85 PathProgramCache]: Analyzing trace with hash -554594431, now seen corresponding path program 1 times [2022-01-18 09:15:54,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:15:54,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540034060] [2022-01-18 09:15:54,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:15:54,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:15:55,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:15:55,098 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 09:15:55,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:15:55,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540034060] [2022-01-18 09:15:55,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540034060] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:15:55,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:15:55,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 09:15:55,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77529418] [2022-01-18 09:15:55,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:15:55,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 09:15:55,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:15:55,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 09:15:55,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 09:15:55,100 INFO L87 Difference]: Start difference. First operand 2426 states and 7496 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 09:15:55,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:15:55,209 INFO L93 Difference]: Finished difference Result 1958 states and 5864 transitions. [2022-01-18 09:15:55,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 09:15:55,209 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-01-18 09:15:55,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:15:55,213 INFO L225 Difference]: With dead ends: 1958 [2022-01-18 09:15:55,213 INFO L226 Difference]: Without dead ends: 1418 [2022-01-18 09:15:55,213 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2022-01-18 09:15:55,214 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 237 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 09:15:55,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [237 Valid, 383 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 09:15:55,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1418 states. [2022-01-18 09:15:55,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1418 to 1418. [2022-01-18 09:15:55,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1418 states, 1417 states have (on average 2.9188426252646438) internal successors, (4136), 1417 states have internal predecessors, (4136), 0 states have call successors, (0), 0 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 09:15:55,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1418 states to 1418 states and 4136 transitions. [2022-01-18 09:15:55,237 INFO L78 Accepts]: Start accepts. Automaton has 1418 states and 4136 transitions. Word has length 62 [2022-01-18 09:15:55,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:15:55,237 INFO L470 AbstractCegarLoop]: Abstraction has 1418 states and 4136 transitions. [2022-01-18 09:15:55,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 09:15:55,237 INFO L276 IsEmpty]: Start isEmpty. Operand 1418 states and 4136 transitions. [2022-01-18 09:15:55,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-18 09:15:55,240 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:15:55,240 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:15:55,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-18 09:15:55,240 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 09:15:55,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:15:55,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1494823189, now seen corresponding path program 1 times [2022-01-18 09:15:55,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:15:55,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239187162] [2022-01-18 09:15:55,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:15:55,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:15:55,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:15:55,312 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 09:15:55,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:15:55,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239187162] [2022-01-18 09:15:55,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239187162] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:15:55,313 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:15:55,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 09:15:55,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756276422] [2022-01-18 09:15:55,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:15:55,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 09:15:55,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:15:55,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 09:15:55,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-18 09:15:55,314 INFO L87 Difference]: Start difference. First operand 1418 states and 4136 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 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 09:15:55,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:15:55,413 INFO L93 Difference]: Finished difference Result 1982 states and 5820 transitions. [2022-01-18 09:15:55,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 09:15:55,414 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2022-01-18 09:15:55,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:15:55,417 INFO L225 Difference]: With dead ends: 1982 [2022-01-18 09:15:55,417 INFO L226 Difference]: Without dead ends: 1078 [2022-01-18 09:15:55,417 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-01-18 09:15:55,417 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 76 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 09:15:55,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 563 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 09:15:55,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1078 states. [2022-01-18 09:15:55,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1078 to 1030. [2022-01-18 09:15:55,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1030 states, 1029 states have (on average 2.876579203109815) internal successors, (2960), 1029 states have internal predecessors, (2960), 0 states have call successors, (0), 0 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 09:15:55,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1030 states to 1030 states and 2960 transitions. [2022-01-18 09:15:55,436 INFO L78 Accepts]: Start accepts. Automaton has 1030 states and 2960 transitions. Word has length 66 [2022-01-18 09:15:55,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:15:55,436 INFO L470 AbstractCegarLoop]: Abstraction has 1030 states and 2960 transitions. [2022-01-18 09:15:55,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 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 09:15:55,436 INFO L276 IsEmpty]: Start isEmpty. Operand 1030 states and 2960 transitions. [2022-01-18 09:15:55,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-18 09:15:55,438 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:15:55,438 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:15:55,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-18 09:15:55,438 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 09:15:55,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:15:55,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1907956705, now seen corresponding path program 2 times [2022-01-18 09:15:55,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:15:55,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652252267] [2022-01-18 09:15:55,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:15:55,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:15:55,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:15:55,517 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 09:15:55,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:15:55,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652252267] [2022-01-18 09:15:55,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652252267] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:15:55,518 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:15:55,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 09:15:55,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825114433] [2022-01-18 09:15:55,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:15:55,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 09:15:55,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:15:55,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 09:15:55,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-18 09:15:55,519 INFO L87 Difference]: Start difference. First operand 1030 states and 2960 transitions. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 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 09:15:55,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:15:55,587 INFO L93 Difference]: Finished difference Result 1594 states and 4644 transitions. [2022-01-18 09:15:55,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 09:15:55,588 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2022-01-18 09:15:55,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:15:55,591 INFO L225 Difference]: With dead ends: 1594 [2022-01-18 09:15:55,591 INFO L226 Difference]: Without dead ends: 933 [2022-01-18 09:15:55,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-01-18 09:15:55,592 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 105 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 09:15:55,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 548 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 09:15:55,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 933 states. [2022-01-18 09:15:55,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 933 to 933. [2022-01-18 09:15:55,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 933 states, 932 states have (on average 2.8605150214592276) internal successors, (2666), 932 states have internal predecessors, (2666), 0 states have call successors, (0), 0 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 09:15:55,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 933 states to 933 states and 2666 transitions. [2022-01-18 09:15:55,608 INFO L78 Accepts]: Start accepts. Automaton has 933 states and 2666 transitions. Word has length 66 [2022-01-18 09:15:55,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:15:55,609 INFO L470 AbstractCegarLoop]: Abstraction has 933 states and 2666 transitions. [2022-01-18 09:15:55,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 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 09:15:55,609 INFO L276 IsEmpty]: Start isEmpty. Operand 933 states and 2666 transitions. [2022-01-18 09:15:55,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-18 09:15:55,611 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:15:55,611 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:15:55,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-18 09:15:55,611 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 09:15:55,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:15:55,611 INFO L85 PathProgramCache]: Analyzing trace with hash -628748911, now seen corresponding path program 3 times [2022-01-18 09:15:55,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:15:55,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375029916] [2022-01-18 09:15:55,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:15:55,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:15:55,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:15:55,683 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 09:15:55,683 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:15:55,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375029916] [2022-01-18 09:15:55,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375029916] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:15:55,686 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:15:55,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 09:15:55,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115752997] [2022-01-18 09:15:55,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:15:55,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 09:15:55,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:15:55,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 09:15:55,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-18 09:15:55,687 INFO L87 Difference]: Start difference. First operand 933 states and 2666 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 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 09:15:55,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:15:55,753 INFO L93 Difference]: Finished difference Result 879 states and 2504 transitions. [2022-01-18 09:15:55,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 09:15:55,754 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2022-01-18 09:15:55,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:15:55,754 INFO L225 Difference]: With dead ends: 879 [2022-01-18 09:15:55,754 INFO L226 Difference]: Without dead ends: 0 [2022-01-18 09:15:55,754 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-01-18 09:15:55,755 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 58 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 09:15:55,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 447 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 09:15:55,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-18 09:15:55,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-18 09:15:55,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 09:15:55,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-18 09:15:55,756 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 66 [2022-01-18 09:15:55,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:15:55,756 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-18 09:15:55,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 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 09:15:55,756 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-18 09:15:55,756 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-18 09:15:55,758 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-01-18 09:15:55,759 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-01-18 09:15:55,759 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-01-18 09:15:55,759 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-01-18 09:15:55,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-18 09:15:55,761 INFO L732 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1] [2022-01-18 09:15:55,762 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-18 09:15:55,762 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 09:15:55,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 09:15:55 BasicIcfg [2022-01-18 09:15:55,765 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 09:15:55,766 INFO L158 Benchmark]: Toolchain (without parser) took 4060.05ms. Allocated memory was 432.0MB in the beginning and 1.0GB in the end (delta: 599.8MB). Free memory was 372.9MB in the beginning and 864.3MB in the end (delta: -491.5MB). Peak memory consumption was 110.5MB. Max. memory is 16.0GB. [2022-01-18 09:15:55,766 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 432.0MB. Free memory was 390.7MB in the beginning and 390.6MB in the end (delta: 69.6kB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 09:15:55,766 INFO L158 Benchmark]: CACSL2BoogieTranslator took 394.87ms. Allocated memory was 432.0MB in the beginning and 559.9MB in the end (delta: 127.9MB). Free memory was 372.7MB in the beginning and 519.5MB in the end (delta: -146.9MB). Peak memory consumption was 9.3MB. Max. memory is 16.0GB. [2022-01-18 09:15:55,766 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.61ms. Allocated memory is still 559.9MB. Free memory was 519.5MB in the beginning and 517.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 09:15:55,766 INFO L158 Benchmark]: Boogie Preprocessor took 23.72ms. Allocated memory is still 559.9MB. Free memory was 517.4MB in the beginning and 516.4MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 09:15:55,767 INFO L158 Benchmark]: RCFGBuilder took 307.74ms. Allocated memory is still 559.9MB. Free memory was 516.4MB in the beginning and 499.6MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2022-01-18 09:15:55,767 INFO L158 Benchmark]: TraceAbstraction took 3287.21ms. Allocated memory was 559.9MB in the beginning and 1.0GB in the end (delta: 471.9MB). Free memory was 499.6MB in the beginning and 864.3MB in the end (delta: -364.7MB). Peak memory consumption was 110.3MB. Max. memory is 16.0GB. [2022-01-18 09:15:55,768 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 432.0MB. Free memory was 390.7MB in the beginning and 390.6MB in the end (delta: 69.6kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 394.87ms. Allocated memory was 432.0MB in the beginning and 559.9MB in the end (delta: 127.9MB). Free memory was 372.7MB in the beginning and 519.5MB in the end (delta: -146.9MB). Peak memory consumption was 9.3MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 41.61ms. Allocated memory is still 559.9MB. Free memory was 519.5MB in the beginning and 517.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 23.72ms. Allocated memory is still 559.9MB. Free memory was 517.4MB in the beginning and 516.4MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 307.74ms. Allocated memory is still 559.9MB. Free memory was 516.4MB in the beginning and 499.6MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 3287.21ms. Allocated memory was 559.9MB in the beginning and 1.0GB in the end (delta: 471.9MB). Free memory was 499.6MB in the beginning and 864.3MB in the end (delta: -364.7MB). Peak memory consumption was 110.3MB. 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 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 113 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 3.2s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.1s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1120 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1120 mSDsluCounter, 3619 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2908 mSDsCounter, 57 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 434 IncrementalHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 57 mSolverCounterUnsat, 821 mSDtfsCounter, 434 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 98 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5660occurred in iteration=0, InterpolantAutomatonStates: 73, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 8 MinimizatonAttempts, 48 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 491 NumberOfCodeBlocks, 491 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 483 ConstructedInterpolants, 0 QuantifiedInterpolants, 1631 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-01-18 09:15:55,814 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...