/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe016_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7a177ad [2020-11-09 15:37:56,490 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-09 15:37:56,494 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-09 15:37:56,551 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-09 15:37:56,552 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-09 15:37:56,556 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-09 15:37:56,559 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-09 15:37:56,567 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-09 15:37:56,570 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-09 15:37:56,578 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-09 15:37:56,579 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-09 15:37:56,580 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-09 15:37:56,581 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-09 15:37:56,584 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-09 15:37:56,586 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-09 15:37:56,587 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-09 15:37:56,588 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-09 15:37:56,593 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-09 15:37:56,601 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-09 15:37:56,605 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-09 15:37:56,609 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-09 15:37:56,610 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-09 15:37:56,612 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-09 15:37:56,614 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-09 15:37:56,638 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-09 15:37:56,644 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-09 15:37:56,645 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-09 15:37:56,645 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-09 15:37:56,646 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-09 15:37:56,648 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-09 15:37:56,649 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-09 15:37:56,650 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-09 15:37:56,650 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-09 15:37:56,650 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-09 15:37:56,651 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-09 15:37:56,652 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-09 15:37:56,653 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-11-09 15:37:56,704 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-09 15:37:56,705 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-09 15:37:56,706 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-09 15:37:56,707 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-09 15:37:56,707 INFO L138 SettingsManager]: * Use SBE=true [2020-11-09 15:37:56,707 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-09 15:37:56,708 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-09 15:37:56,708 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-09 15:37:56,708 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-09 15:37:56,708 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-09 15:37:56,708 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-09 15:37:56,709 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-09 15:37:56,709 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-09 15:37:56,709 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-09 15:37:56,709 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-09 15:37:56,710 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-09 15:37:56,710 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-09 15:37:56,710 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-09 15:37:56,710 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-09 15:37:56,710 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-09 15:37:56,711 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-09 15:37:56,711 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 15:37:56,711 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-09 15:37:56,711 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-11-09 15:37:56,712 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-09 15:37:56,712 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-09 15:37:56,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-09 15:37:56,712 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-11-09 15:37:56,713 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-11-09 15:37:56,713 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-09 15:37:56,713 INFO L138 SettingsManager]: * Interpolant automaton=MCR 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-09 15:37:57,082 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-09 15:37:57,108 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-09 15:37:57,111 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-09 15:37:57,113 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-09 15:37:57,114 INFO L275 PluginConnector]: CDTParser initialized [2020-11-09 15:37:57,115 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_tso.opt.i [2020-11-09 15:37:57,197 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f3210bad/086a4854b3a948e899dfceb40469249e/FLAG7893f83f9 [2020-11-09 15:37:57,884 INFO L306 CDTParser]: Found 1 translation units. [2020-11-09 15:37:57,884 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_tso.opt.i [2020-11-09 15:37:57,921 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f3210bad/086a4854b3a948e899dfceb40469249e/FLAG7893f83f9 [2020-11-09 15:37:58,160 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f3210bad/086a4854b3a948e899dfceb40469249e [2020-11-09 15:37:58,168 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-09 15:37:58,176 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-09 15:37:58,179 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-09 15:37:58,179 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-09 15:37:58,183 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-09 15:37:58,184 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:37:58" (1/1) ... [2020-11-09 15:37:58,189 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@457ab8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:37:58, skipping insertion in model container [2020-11-09 15:37:58,190 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:37:58" (1/1) ... [2020-11-09 15:37:58,199 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-09 15:37:58,274 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-09 15:37:58,691 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 15:37:58,701 INFO L203 MainTranslator]: Completed pre-run [2020-11-09 15:37:58,770 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 15:37:58,936 INFO L208 MainTranslator]: Completed translation [2020-11-09 15:37:58,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:37:58 WrapperNode [2020-11-09 15:37:58,937 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-09 15:37:58,939 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-09 15:37:58,939 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-09 15:37:58,939 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-09 15:37:58,950 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:37:58" (1/1) ... [2020-11-09 15:37:59,003 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:37:58" (1/1) ... [2020-11-09 15:37:59,043 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-09 15:37:59,046 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-09 15:37:59,046 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-09 15:37:59,046 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-09 15:37:59,058 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:37:58" (1/1) ... [2020-11-09 15:37:59,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:37:58" (1/1) ... [2020-11-09 15:37:59,073 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:37:58" (1/1) ... [2020-11-09 15:37:59,074 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:37:58" (1/1) ... [2020-11-09 15:37:59,092 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:37:58" (1/1) ... [2020-11-09 15:37:59,097 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:37:58" (1/1) ... [2020-11-09 15:37:59,101 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:37:58" (1/1) ... [2020-11-09 15:37:59,107 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-09 15:37:59,112 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-09 15:37:59,112 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-09 15:37:59,112 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-09 15:37:59,113 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:37:58" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 15:37:59,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-09 15:37:59,215 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-09 15:37:59,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-09 15:37:59,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-09 15:37:59,217 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-09 15:37:59,217 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-09 15:37:59,218 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-09 15:37:59,218 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-09 15:37:59,219 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-09 15:37:59,219 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-09 15:37:59,219 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-11-09 15:37:59,219 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-11-09 15:37:59,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-09 15:37:59,220 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-09 15:37:59,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-09 15:37:59,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-09 15:37:59,222 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-09 15:37:59,778 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-09 15:37:59,778 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-09 15:37:59,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:37:59 BoogieIcfgContainer [2020-11-09 15:37:59,781 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-09 15:37:59,783 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-09 15:37:59,783 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-09 15:37:59,787 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-09 15:37:59,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 03:37:58" (1/3) ... [2020-11-09 15:37:59,788 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b26e775 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:37:59, skipping insertion in model container [2020-11-09 15:37:59,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:37:58" (2/3) ... [2020-11-09 15:37:59,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b26e775 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:37:59, skipping insertion in model container [2020-11-09 15:37:59,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:37:59" (3/3) ... [2020-11-09 15:37:59,791 INFO L111 eAbstractionObserver]: Analyzing ICFG safe016_tso.opt.i [2020-11-09 15:37:59,807 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-09 15:37:59,807 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-09 15:37:59,811 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-09 15:37:59,812 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-09 15:37:59,857 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:59,858 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:59,858 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:59,858 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:59,858 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:59,858 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:59,859 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:59,859 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:59,859 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:59,860 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:59,860 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:59,860 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:59,860 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:59,861 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:59,861 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:59,861 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:59,861 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:59,861 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:59,862 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:59,862 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:59,862 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:59,862 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:59,862 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:59,863 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:59,863 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:59,863 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:59,863 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:59,864 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:59,864 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:59,864 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:59,864 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:59,864 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:59,865 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:59,865 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:59,865 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:59,865 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:59,866 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:59,867 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:59,867 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:59,867 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:59,867 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:59,867 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:59,867 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:59,868 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:59,868 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:59,868 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:59,868 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:59,868 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:59,871 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:59,871 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:59,872 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:59,872 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:59,882 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:59,882 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:59,883 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:59,883 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:59,886 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:59,886 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:59,886 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:59,886 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:59,888 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:59,889 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:59,889 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:59,889 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:59,891 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-09 15:37:59,904 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-11-09 15:37:59,928 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 15:37:59,928 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 15:37:59,928 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-09 15:37:59,929 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-11-09 15:37:59,929 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 15:37:59,929 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 15:37:59,929 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 15:37:59,929 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 15:37:59,942 INFO L128 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-11-09 15:37:59,942 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 89 transitions, 198 flow [2020-11-09 15:37:59,945 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 99 places, 89 transitions, 198 flow [2020-11-09 15:37:59,947 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 99 places, 89 transitions, 198 flow [2020-11-09 15:37:59,999 INFO L129 PetriNetUnfolder]: 3/85 cut-off events. [2020-11-09 15:37:59,999 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-09 15:38:00,004 INFO L84 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 85 events. 3/85 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 72 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2020-11-09 15:38:00,008 INFO L116 LiptonReduction]: Number of co-enabled transitions 2042 [2020-11-09 15:38:04,014 WARN L194 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-11-09 15:38:04,125 WARN L194 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-11-09 15:38:04,385 WARN L194 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-11-09 15:38:04,498 WARN L194 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-11-09 15:38:04,804 WARN L194 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 50 [2020-11-09 15:38:04,870 INFO L131 LiptonReduction]: Checked pairs total: 4334 [2020-11-09 15:38:04,870 INFO L133 LiptonReduction]: Total number of compositions: 82 [2020-11-09 15:38:04,878 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 26 transitions, 72 flow [2020-11-09 15:38:04,962 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 706 states. [2020-11-09 15:38:04,964 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states. [2020-11-09 15:38:04,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-09 15:38:04,978 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:38:04,980 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:38:04,981 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:38:04,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:38:04,988 INFO L82 PathProgramCache]: Analyzing trace with hash -782796091, now seen corresponding path program 1 times [2020-11-09 15:38:05,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:38:05,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353370168] [2020-11-09 15:38:05,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:38:05,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:38:05,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:38:05,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353370168] [2020-11-09 15:38:05,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:38:05,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-09 15:38:05,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [129133268] [2020-11-09 15:38:05,302 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:38:05,307 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:38:05,327 INFO L252 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-11-09 15:38:05,328 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:38:05,334 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:38:05,334 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 15:38:05,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:38:05,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 15:38:05,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:38:05,357 INFO L87 Difference]: Start difference. First operand 706 states. Second operand 3 states. [2020-11-09 15:38:05,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:38:05,433 INFO L93 Difference]: Finished difference Result 670 states and 2295 transitions. [2020-11-09 15:38:05,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 15:38:05,436 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-11-09 15:38:05,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:38:05,467 INFO L225 Difference]: With dead ends: 670 [2020-11-09 15:38:05,467 INFO L226 Difference]: Without dead ends: 526 [2020-11-09 15:38:05,468 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:38:05,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2020-11-09 15:38:05,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2020-11-09 15:38:05,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 526 states. [2020-11-09 15:38:05,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 1743 transitions. [2020-11-09 15:38:05,575 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 1743 transitions. Word has length 10 [2020-11-09 15:38:05,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:38:05,576 INFO L481 AbstractCegarLoop]: Abstraction has 526 states and 1743 transitions. [2020-11-09 15:38:05,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 15:38:05,576 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 1743 transitions. [2020-11-09 15:38:05,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-09 15:38:05,579 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:38:05,579 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:38:05,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-09 15:38:05,579 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:38:05,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:38:05,580 INFO L82 PathProgramCache]: Analyzing trace with hash -1879702246, now seen corresponding path program 1 times [2020-11-09 15:38:05,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:38:05,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606157146] [2020-11-09 15:38:05,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:38:05,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:38:05,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:38:05,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606157146] [2020-11-09 15:38:05,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:38:05,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 15:38:05,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [677207680] [2020-11-09 15:38:05,724 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:38:05,726 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:38:05,730 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 25 transitions. [2020-11-09 15:38:05,731 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:38:05,891 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:38:05,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 15:38:05,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:38:05,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 15:38:05,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 15:38:05,893 INFO L87 Difference]: Start difference. First operand 526 states and 1743 transitions. Second operand 4 states. [2020-11-09 15:38:05,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:38:05,928 INFO L93 Difference]: Finished difference Result 724 states and 2331 transitions. [2020-11-09 15:38:05,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 15:38:05,929 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-09 15:38:05,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:38:05,934 INFO L225 Difference]: With dead ends: 724 [2020-11-09 15:38:05,934 INFO L226 Difference]: Without dead ends: 412 [2020-11-09 15:38:05,935 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 15:38:05,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2020-11-09 15:38:05,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 412. [2020-11-09 15:38:05,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-11-09 15:38:05,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 1323 transitions. [2020-11-09 15:38:05,965 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 1323 transitions. Word has length 11 [2020-11-09 15:38:05,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:38:05,965 INFO L481 AbstractCegarLoop]: Abstraction has 412 states and 1323 transitions. [2020-11-09 15:38:05,966 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 15:38:05,966 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 1323 transitions. [2020-11-09 15:38:05,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 15:38:05,968 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:38:05,968 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:38:05,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-09 15:38:05,968 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:38:05,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:38:05,969 INFO L82 PathProgramCache]: Analyzing trace with hash -647796126, now seen corresponding path program 1 times [2020-11-09 15:38:05,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:38:05,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444647621] [2020-11-09 15:38:05,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:38:05,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:38:06,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:38:06,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444647621] [2020-11-09 15:38:06,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:38:06,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-09 15:38:06,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1681963416] [2020-11-09 15:38:06,016 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:38:06,018 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:38:06,020 INFO L252 McrAutomatonBuilder]: Finished intersection with 15 states and 16 transitions. [2020-11-09 15:38:06,020 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:38:06,027 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:38:06,028 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 15:38:06,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:38:06,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 15:38:06,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:38:06,029 INFO L87 Difference]: Start difference. First operand 412 states and 1323 transitions. Second operand 3 states. [2020-11-09 15:38:06,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:38:06,048 INFO L93 Difference]: Finished difference Result 402 states and 1280 transitions. [2020-11-09 15:38:06,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 15:38:06,048 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-11-09 15:38:06,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:38:06,052 INFO L225 Difference]: With dead ends: 402 [2020-11-09 15:38:06,052 INFO L226 Difference]: Without dead ends: 402 [2020-11-09 15:38:06,053 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:38:06,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2020-11-09 15:38:06,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 402. [2020-11-09 15:38:06,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 402 states. [2020-11-09 15:38:06,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 1280 transitions. [2020-11-09 15:38:06,073 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 1280 transitions. Word has length 12 [2020-11-09 15:38:06,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:38:06,073 INFO L481 AbstractCegarLoop]: Abstraction has 402 states and 1280 transitions. [2020-11-09 15:38:06,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 15:38:06,073 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 1280 transitions. [2020-11-09 15:38:06,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-09 15:38:06,077 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:38:06,078 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:38:06,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-09 15:38:06,079 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:38:06,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:38:06,080 INFO L82 PathProgramCache]: Analyzing trace with hash 1393153852, now seen corresponding path program 1 times [2020-11-09 15:38:06,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:38:06,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723962299] [2020-11-09 15:38:06,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:38:06,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:38:06,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:38:06,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723962299] [2020-11-09 15:38:06,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:38:06,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 15:38:06,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1572475405] [2020-11-09 15:38:06,172 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:38:06,174 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:38:06,176 INFO L252 McrAutomatonBuilder]: Finished intersection with 17 states and 19 transitions. [2020-11-09 15:38:06,176 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:38:06,181 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:38:06,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 15:38:06,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:38:06,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 15:38:06,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:38:06,182 INFO L87 Difference]: Start difference. First operand 402 states and 1280 transitions. Second operand 3 states. [2020-11-09 15:38:06,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:38:06,201 INFO L93 Difference]: Finished difference Result 518 states and 1560 transitions. [2020-11-09 15:38:06,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 15:38:06,202 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-11-09 15:38:06,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:38:06,205 INFO L225 Difference]: With dead ends: 518 [2020-11-09 15:38:06,206 INFO L226 Difference]: Without dead ends: 422 [2020-11-09 15:38:06,206 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:38:06,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2020-11-09 15:38:06,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 382. [2020-11-09 15:38:06,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2020-11-09 15:38:06,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1156 transitions. [2020-11-09 15:38:06,225 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1156 transitions. Word has length 13 [2020-11-09 15:38:06,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:38:06,226 INFO L481 AbstractCegarLoop]: Abstraction has 382 states and 1156 transitions. [2020-11-09 15:38:06,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 15:38:06,226 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1156 transitions. [2020-11-09 15:38:06,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-09 15:38:06,227 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:38:06,227 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:38:06,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-09 15:38:06,227 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:38:06,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:38:06,228 INFO L82 PathProgramCache]: Analyzing trace with hash 1393155433, now seen corresponding path program 1 times [2020-11-09 15:38:06,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:38:06,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847331239] [2020-11-09 15:38:06,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:38:06,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:38:06,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:38:06,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847331239] [2020-11-09 15:38:06,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:38:06,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-09 15:38:06,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [49288904] [2020-11-09 15:38:06,265 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:38:06,267 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:38:06,270 INFO L252 McrAutomatonBuilder]: Finished intersection with 25 states and 37 transitions. [2020-11-09 15:38:06,270 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:38:06,331 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:38:06,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 15:38:06,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:38:06,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 15:38:06,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:38:06,333 INFO L87 Difference]: Start difference. First operand 382 states and 1156 transitions. Second operand 3 states. [2020-11-09 15:38:06,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:38:06,343 INFO L93 Difference]: Finished difference Result 370 states and 1112 transitions. [2020-11-09 15:38:06,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 15:38:06,344 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-11-09 15:38:06,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:38:06,347 INFO L225 Difference]: With dead ends: 370 [2020-11-09 15:38:06,347 INFO L226 Difference]: Without dead ends: 370 [2020-11-09 15:38:06,348 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:38:06,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2020-11-09 15:38:06,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 370. [2020-11-09 15:38:06,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 370 states. [2020-11-09 15:38:06,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 1112 transitions. [2020-11-09 15:38:06,363 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 1112 transitions. Word has length 13 [2020-11-09 15:38:06,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:38:06,363 INFO L481 AbstractCegarLoop]: Abstraction has 370 states and 1112 transitions. [2020-11-09 15:38:06,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 15:38:06,363 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 1112 transitions. [2020-11-09 15:38:06,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-09 15:38:06,364 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:38:06,364 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:38:06,364 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-09 15:38:06,365 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:38:06,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:38:06,365 INFO L82 PathProgramCache]: Analyzing trace with hash 1625881232, now seen corresponding path program 1 times [2020-11-09 15:38:06,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:38:06,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418020589] [2020-11-09 15:38:06,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:38:06,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:38:06,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:38:06,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418020589] [2020-11-09 15:38:06,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:38:06,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 15:38:06,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [741417182] [2020-11-09 15:38:06,411 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:38:06,413 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:38:06,418 INFO L252 McrAutomatonBuilder]: Finished intersection with 31 states and 50 transitions. [2020-11-09 15:38:06,419 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:38:06,535 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:38:06,536 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 15:38:06,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:38:06,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 15:38:06,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 15:38:06,537 INFO L87 Difference]: Start difference. First operand 370 states and 1112 transitions. Second operand 4 states. [2020-11-09 15:38:06,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:38:06,566 INFO L93 Difference]: Finished difference Result 530 states and 1546 transitions. [2020-11-09 15:38:06,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 15:38:06,566 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-11-09 15:38:06,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:38:06,569 INFO L225 Difference]: With dead ends: 530 [2020-11-09 15:38:06,569 INFO L226 Difference]: Without dead ends: 278 [2020-11-09 15:38:06,570 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 15:38:06,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-11-09 15:38:06,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2020-11-09 15:38:06,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-11-09 15:38:06,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 791 transitions. [2020-11-09 15:38:06,580 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 791 transitions. Word has length 14 [2020-11-09 15:38:06,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:38:06,581 INFO L481 AbstractCegarLoop]: Abstraction has 278 states and 791 transitions. [2020-11-09 15:38:06,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 15:38:06,581 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 791 transitions. [2020-11-09 15:38:06,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-09 15:38:06,582 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:38:06,582 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:38:06,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-09 15:38:06,582 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:38:06,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:38:06,583 INFO L82 PathProgramCache]: Analyzing trace with hash 238144508, now seen corresponding path program 2 times [2020-11-09 15:38:06,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:38:06,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965478761] [2020-11-09 15:38:06,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:38:06,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:38:06,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:38:06,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965478761] [2020-11-09 15:38:06,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:38:06,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 15:38:06,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1000083608] [2020-11-09 15:38:06,658 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:38:06,660 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:38:06,666 INFO L252 McrAutomatonBuilder]: Finished intersection with 33 states and 54 transitions. [2020-11-09 15:38:06,667 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:38:06,680 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 15:38:06,700 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 15:38:06,713 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 15:38:06,733 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 15:38:06,746 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 15:38:06,758 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 15:38:06,799 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 15:38:06,821 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 15:38:06,834 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [9496#(not (= 4 ~__unbuffered_cnt~0))] [2020-11-09 15:38:06,835 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 15:38:06,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:38:06,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 15:38:06,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-09 15:38:06,837 INFO L87 Difference]: Start difference. First operand 278 states and 791 transitions. Second operand 5 states. [2020-11-09 15:38:06,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:38:06,929 INFO L93 Difference]: Finished difference Result 292 states and 753 transitions. [2020-11-09 15:38:06,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-09 15:38:06,930 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-11-09 15:38:06,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:38:06,932 INFO L225 Difference]: With dead ends: 292 [2020-11-09 15:38:06,932 INFO L226 Difference]: Without dead ends: 195 [2020-11-09 15:38:06,933 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-09 15:38:06,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-11-09 15:38:06,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2020-11-09 15:38:06,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-11-09 15:38:06,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 465 transitions. [2020-11-09 15:38:06,942 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 465 transitions. Word has length 14 [2020-11-09 15:38:06,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:38:06,942 INFO L481 AbstractCegarLoop]: Abstraction has 195 states and 465 transitions. [2020-11-09 15:38:06,942 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 15:38:06,942 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 465 transitions. [2020-11-09 15:38:06,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-09 15:38:06,943 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:38:06,943 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:38:06,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-09 15:38:06,944 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:38:06,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:38:06,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1046603743, now seen corresponding path program 1 times [2020-11-09 15:38:06,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:38:06,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122633017] [2020-11-09 15:38:06,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:38:06,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:38:07,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:38:07,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122633017] [2020-11-09 15:38:07,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:38:07,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 15:38:07,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [811156183] [2020-11-09 15:38:07,080 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:38:07,083 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:38:07,092 INFO L252 McrAutomatonBuilder]: Finished intersection with 38 states and 62 transitions. [2020-11-09 15:38:07,093 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:38:07,101 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 15:38:07,156 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 15:38:07,178 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 15:38:07,238 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [10189#(<= ~__unbuffered_cnt~0 0)] [2020-11-09 15:38:07,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-09 15:38:07,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:38:07,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-09 15:38:07,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-09 15:38:07,240 INFO L87 Difference]: Start difference. First operand 195 states and 465 transitions. Second operand 7 states. [2020-11-09 15:38:07,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:38:07,318 INFO L93 Difference]: Finished difference Result 189 states and 428 transitions. [2020-11-09 15:38:07,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-09 15:38:07,319 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-11-09 15:38:07,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:38:07,320 INFO L225 Difference]: With dead ends: 189 [2020-11-09 15:38:07,320 INFO L226 Difference]: Without dead ends: 150 [2020-11-09 15:38:07,321 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-11-09 15:38:07,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-11-09 15:38:07,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2020-11-09 15:38:07,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-11-09 15:38:07,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 339 transitions. [2020-11-09 15:38:07,326 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 339 transitions. Word has length 16 [2020-11-09 15:38:07,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:38:07,327 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 339 transitions. [2020-11-09 15:38:07,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-09 15:38:07,327 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 339 transitions. [2020-11-09 15:38:07,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-09 15:38:07,328 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:38:07,328 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:38:07,328 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-09 15:38:07,328 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:38:07,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:38:07,329 INFO L82 PathProgramCache]: Analyzing trace with hash 1569359463, now seen corresponding path program 1 times [2020-11-09 15:38:07,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:38:07,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607970322] [2020-11-09 15:38:07,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:38:07,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:38:07,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:38:07,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607970322] [2020-11-09 15:38:07,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:38:07,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 15:38:07,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [310390851] [2020-11-09 15:38:07,371 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:38:07,374 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:38:07,410 INFO L252 McrAutomatonBuilder]: Finished intersection with 34 states and 48 transitions. [2020-11-09 15:38:07,410 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:38:07,427 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:38:07,428 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 15:38:07,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:38:07,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 15:38:07,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 15:38:07,429 INFO L87 Difference]: Start difference. First operand 150 states and 339 transitions. Second operand 4 states. [2020-11-09 15:38:07,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:38:07,465 INFO L93 Difference]: Finished difference Result 182 states and 403 transitions. [2020-11-09 15:38:07,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 15:38:07,466 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-11-09 15:38:07,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:38:07,467 INFO L225 Difference]: With dead ends: 182 [2020-11-09 15:38:07,467 INFO L226 Difference]: Without dead ends: 139 [2020-11-09 15:38:07,468 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 15:38:07,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-11-09 15:38:07,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 137. [2020-11-09 15:38:07,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-11-09 15:38:07,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 301 transitions. [2020-11-09 15:38:07,473 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 301 transitions. Word has length 18 [2020-11-09 15:38:07,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:38:07,475 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 301 transitions. [2020-11-09 15:38:07,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 15:38:07,475 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 301 transitions. [2020-11-09 15:38:07,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-09 15:38:07,476 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:38:07,476 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:38:07,476 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-09 15:38:07,476 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:38:07,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:38:07,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1563997083, now seen corresponding path program 2 times [2020-11-09 15:38:07,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:38:07,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924905059] [2020-11-09 15:38:07,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:38:07,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:38:07,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:38:07,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924905059] [2020-11-09 15:38:07,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:38:07,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-09 15:38:07,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2032852935] [2020-11-09 15:38:07,563 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:38:07,565 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:38:07,575 INFO L252 McrAutomatonBuilder]: Finished intersection with 43 states and 66 transitions. [2020-11-09 15:38:07,575 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:38:07,600 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 15:38:07,613 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [11151#(<= ~__unbuffered_cnt~0 0)] [2020-11-09 15:38:07,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-09 15:38:07,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:38:07,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-09 15:38:07,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-11-09 15:38:07,615 INFO L87 Difference]: Start difference. First operand 137 states and 301 transitions. Second operand 8 states. [2020-11-09 15:38:07,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:38:07,696 INFO L93 Difference]: Finished difference Result 132 states and 289 transitions. [2020-11-09 15:38:07,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-09 15:38:07,697 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2020-11-09 15:38:07,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:38:07,697 INFO L225 Difference]: With dead ends: 132 [2020-11-09 15:38:07,698 INFO L226 Difference]: Without dead ends: 51 [2020-11-09 15:38:07,698 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-09 15:38:07,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-11-09 15:38:07,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-11-09 15:38:07,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-11-09 15:38:07,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 97 transitions. [2020-11-09 15:38:07,700 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 97 transitions. Word has length 18 [2020-11-09 15:38:07,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:38:07,701 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 97 transitions. [2020-11-09 15:38:07,701 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-09 15:38:07,701 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 97 transitions. [2020-11-09 15:38:07,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-09 15:38:07,702 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:38:07,702 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:38:07,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-09 15:38:07,702 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:38:07,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:38:07,703 INFO L82 PathProgramCache]: Analyzing trace with hash -299924038, now seen corresponding path program 1 times [2020-11-09 15:38:07,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:38:07,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746034011] [2020-11-09 15:38:07,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:38:07,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:38:07,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:38:07,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746034011] [2020-11-09 15:38:07,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:38:07,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 15:38:07,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1658025711] [2020-11-09 15:38:07,732 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:38:07,734 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:38:07,746 INFO L252 McrAutomatonBuilder]: Finished intersection with 52 states and 80 transitions. [2020-11-09 15:38:07,747 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:38:07,752 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:38:07,752 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 15:38:07,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:38:07,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 15:38:07,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:38:07,754 INFO L87 Difference]: Start difference. First operand 51 states and 97 transitions. Second operand 3 states. [2020-11-09 15:38:07,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:38:07,760 INFO L93 Difference]: Finished difference Result 50 states and 96 transitions. [2020-11-09 15:38:07,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 15:38:07,761 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-11-09 15:38:07,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:38:07,761 INFO L225 Difference]: With dead ends: 50 [2020-11-09 15:38:07,761 INFO L226 Difference]: Without dead ends: 0 [2020-11-09 15:38:07,762 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:38:07,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-09 15:38:07,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-09 15:38:07,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-09 15:38:07,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-09 15:38:07,763 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2020-11-09 15:38:07,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:38:07,763 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-09 15:38:07,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 15:38:07,763 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-09 15:38:07,763 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-09 15:38:07,763 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-09 15:38:07,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 03:38:07 BasicIcfg [2020-11-09 15:38:07,767 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-09 15:38:07,769 INFO L168 Benchmark]: Toolchain (without parser) took 9597.74 ms. Allocated memory was 151.0 MB in the beginning and 218.1 MB in the end (delta: 67.1 MB). Free memory was 125.1 MB in the beginning and 130.9 MB in the end (delta: -5.8 MB). Peak memory consumption was 62.6 MB. Max. memory is 8.0 GB. [2020-11-09 15:38:07,769 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 124.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 15:38:07,770 INFO L168 Benchmark]: CACSL2BoogieTranslator took 758.94 ms. Allocated memory is still 151.0 MB. Free memory was 124.5 MB in the beginning and 126.7 MB in the end (delta: -2.2 MB). Peak memory consumption was 29.1 MB. Max. memory is 8.0 GB. [2020-11-09 15:38:07,771 INFO L168 Benchmark]: Boogie Procedure Inliner took 105.36 ms. Allocated memory is still 151.0 MB. Free memory was 126.7 MB in the beginning and 124.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-09 15:38:07,772 INFO L168 Benchmark]: Boogie Preprocessor took 61.84 ms. Allocated memory is still 151.0 MB. Free memory was 124.6 MB in the beginning and 123.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-09 15:38:07,772 INFO L168 Benchmark]: RCFGBuilder took 669.27 ms. Allocated memory is still 151.0 MB. Free memory was 123.0 MB in the beginning and 99.4 MB in the end (delta: 23.6 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. [2020-11-09 15:38:07,773 INFO L168 Benchmark]: TraceAbstraction took 7984.08 ms. Allocated memory was 151.0 MB in the beginning and 218.1 MB in the end (delta: 67.1 MB). Free memory was 99.4 MB in the beginning and 130.9 MB in the end (delta: -31.5 MB). Peak memory consumption was 35.7 MB. Max. memory is 8.0 GB. [2020-11-09 15:38:07,777 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 124.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 758.94 ms. Allocated memory is still 151.0 MB. Free memory was 124.5 MB in the beginning and 126.7 MB in the end (delta: -2.2 MB). Peak memory consumption was 29.1 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 105.36 ms. Allocated memory is still 151.0 MB. Free memory was 126.7 MB in the beginning and 124.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 61.84 ms. Allocated memory is still 151.0 MB. Free memory was 124.6 MB in the beginning and 123.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 669.27 ms. Allocated memory is still 151.0 MB. Free memory was 123.0 MB in the beginning and 99.4 MB in the end (delta: 23.6 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 7984.08 ms. Allocated memory was 151.0 MB in the beginning and 218.1 MB in the end (delta: 67.1 MB). Free memory was 99.4 MB in the beginning and 130.9 MB in the end (delta: -31.5 MB). Peak memory consumption was 35.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1132 VarBasedMoverChecksPositive, 41 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 64 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.9s, 99 PlacesBefore, 38 PlacesAfterwards, 89 TransitionsBefore, 26 TransitionsAfterwards, 2042 CoEnabledTransitionPairs, 7 FixpointIterations, 17 TrivialSequentialCompositions, 49 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 14 ConcurrentYvCompositions, 2 ChoiceCompositions, 82 TotalNumberOfCompositions, 4334 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 87 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.8s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.0s, HoareTripleCheckerStatistics: 239 SDtfs, 176 SDslu, 320 SDs, 0 SdLazy, 178 SolverSat, 47 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 135 GetRequests, 99 SyntacticMatches, 4 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=706occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 42 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 159 NumberOfCodeBlocks, 159 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 148 ConstructedInterpolants, 0 QuantifiedInterpolants, 5196 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...