/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe000_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 19:10:08,937 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 19:10:08,940 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 19:10:08,959 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 19:10:08,959 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 19:10:08,961 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 19:10:08,963 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 19:10:08,973 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 19:10:08,976 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 19:10:08,977 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 19:10:08,978 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 19:10:08,979 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 19:10:08,980 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 19:10:08,980 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 19:10:08,981 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 19:10:08,982 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 19:10:08,983 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 19:10:08,984 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 19:10:08,985 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 19:10:08,987 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 19:10:08,988 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 19:10:08,989 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 19:10:08,990 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 19:10:08,991 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 19:10:08,993 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 19:10:08,993 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 19:10:08,994 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 19:10:08,995 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 19:10:08,995 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 19:10:08,996 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 19:10:08,996 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 19:10:08,997 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 19:10:08,997 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 19:10:08,998 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 19:10:08,999 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 19:10:08,999 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 19:10:09,000 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 19:10:09,000 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 19:10:09,000 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 19:10:09,001 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 19:10:09,002 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 19:10:09,003 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-McrStrategy.epf [2020-04-18 19:10:09,025 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 19:10:09,025 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 19:10:09,026 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 19:10:09,027 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 19:10:09,027 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 19:10:09,030 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 19:10:09,030 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 19:10:09,031 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 19:10:09,031 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 19:10:09,031 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 19:10:09,031 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 19:10:09,031 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 19:10:09,032 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 19:10:09,032 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 19:10:09,032 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 19:10:09,032 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 19:10:09,032 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 19:10:09,032 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 19:10:09,033 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 19:10:09,033 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 19:10:09,033 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 19:10:09,033 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 19:10:09,033 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 19:10:09,034 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 19:10:09,034 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 19:10:09,034 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 19:10:09,036 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 19:10:09,036 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-04-18 19:10:09,036 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 19:10:09,037 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 19:10:09,037 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 19:10:09,324 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 19:10:09,344 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 19:10:09,347 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 19:10:09,348 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 19:10:09,348 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 19:10:09,349 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe000_pso.oepc.i [2020-04-18 19:10:09,426 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ed18c96f/452e37050c6a4f9aabe9a6d8b3ec272a/FLAG06d10989a [2020-04-18 19:10:09,989 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 19:10:09,992 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe000_pso.oepc.i [2020-04-18 19:10:10,018 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ed18c96f/452e37050c6a4f9aabe9a6d8b3ec272a/FLAG06d10989a [2020-04-18 19:10:10,270 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ed18c96f/452e37050c6a4f9aabe9a6d8b3ec272a [2020-04-18 19:10:10,282 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 19:10:10,307 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 19:10:10,310 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 19:10:10,310 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 19:10:10,314 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 19:10:10,315 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:10:10" (1/1) ... [2020-04-18 19:10:10,318 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48fceb37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:10:10, skipping insertion in model container [2020-04-18 19:10:10,319 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:10:10" (1/1) ... [2020-04-18 19:10:10,327 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 19:10:10,366 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 19:10:10,886 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 19:10:10,900 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 19:10:10,962 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 19:10:11,043 INFO L208 MainTranslator]: Completed translation [2020-04-18 19:10:11,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:10:11 WrapperNode [2020-04-18 19:10:11,044 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 19:10:11,045 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 19:10:11,045 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 19:10:11,045 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 19:10:11,055 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:10:11" (1/1) ... [2020-04-18 19:10:11,077 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:10:11" (1/1) ... [2020-04-18 19:10:11,102 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 19:10:11,102 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 19:10:11,102 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 19:10:11,103 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 19:10:11,113 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:10:11" (1/1) ... [2020-04-18 19:10:11,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:10:11" (1/1) ... [2020-04-18 19:10:11,116 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:10:11" (1/1) ... [2020-04-18 19:10:11,117 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:10:11" (1/1) ... [2020-04-18 19:10:11,127 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:10:11" (1/1) ... [2020-04-18 19:10:11,129 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:10:11" (1/1) ... [2020-04-18 19:10:11,132 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:10:11" (1/1) ... [2020-04-18 19:10:11,136 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 19:10:11,137 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 19:10:11,137 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 19:10:11,137 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 19:10:11,138 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:10:11" (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 [2020-04-18 19:10:11,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 19:10:11,208 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 19:10:11,208 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 19:10:11,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 19:10:11,208 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 19:10:11,208 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 19:10:11,208 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 19:10:11,209 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 19:10:11,209 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 19:10:11,209 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 19:10:11,209 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 19:10:11,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 19:10:11,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 19:10:11,211 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 19:10:11,564 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 19:10:11,564 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 19:10:11,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:10:11 BoogieIcfgContainer [2020-04-18 19:10:11,569 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 19:10:11,570 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 19:10:11,570 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 19:10:11,580 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 19:10:11,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 07:10:10" (1/3) ... [2020-04-18 19:10:11,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57bbd37a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:10:11, skipping insertion in model container [2020-04-18 19:10:11,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:10:11" (2/3) ... [2020-04-18 19:10:11,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57bbd37a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:10:11, skipping insertion in model container [2020-04-18 19:10:11,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:10:11" (3/3) ... [2020-04-18 19:10:11,583 INFO L109 eAbstractionObserver]: Analyzing ICFG safe000_pso.oepc.i [2020-04-18 19:10:11,593 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 19:10:11,593 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 19:10:11,599 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 19:10:11,600 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 19:10:11,638 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:11,638 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:11,639 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:11,640 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:11,640 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:11,640 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:11,641 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:11,641 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:11,642 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:11,642 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:11,642 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:11,643 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:11,643 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:11,644 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:11,644 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:11,644 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:11,644 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:11,645 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:11,651 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:11,652 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:11,652 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:11,652 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:11,664 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:11,665 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:11,665 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:11,665 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:11,680 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:11,680 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:11,681 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:11,681 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:11,703 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 19:10:11,721 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 19:10:11,721 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 19:10:11,721 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 19:10:11,721 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 19:10:11,721 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 19:10:11,722 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 19:10:11,722 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 19:10:11,722 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 19:10:11,736 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 19:10:12,246 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 8472 states. [2020-04-18 19:10:12,249 INFO L276 IsEmpty]: Start isEmpty. Operand 8472 states. [2020-04-18 19:10:12,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-04-18 19:10:12,276 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:10:12,277 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:10:12,278 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:10:12,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:10:12,284 INFO L82 PathProgramCache]: Analyzing trace with hash -927851968, now seen corresponding path program 1 times [2020-04-18 19:10:12,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:10:12,292 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [559034876] [2020-04-18 19:10:12,309 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:10:12,324 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 36 transitions. [2020-04-18 19:10:12,326 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-04-18 19:10:12,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-04-18 19:10:12,327 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:10:12,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:10:12,328 INFO L82 PathProgramCache]: Analyzing trace with hash -927851968, now seen corresponding path program 2 times [2020-04-18 19:10:12,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:10:12,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878225376] [2020-04-18 19:10:12,332 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:10:12,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:10:12,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:10:12,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878225376] [2020-04-18 19:10:12,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:10:12,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:10:12,818 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:10:12,823 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:10:12,835 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 36 transitions. [2020-04-18 19:10:12,836 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:10:12,898 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:10:12,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:10:12,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 19:10:12,905 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 6 states. [2020-04-18 19:10:13,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:10:13,032 INFO L93 Difference]: Finished difference Result 37 states and 36 transitions. [2020-04-18 19:10:13,032 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 36 transitions. [2020-04-18 19:10:13,033 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:10:13,034 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [559034876] [2020-04-18 19:10:13,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:10:13,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 19:10:13,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [559034876] [2020-04-18 19:10:13,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 19:10:13,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:10:13,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:10:13,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-04-18 19:10:13,042 INFO L87 Difference]: Start difference. First operand 8472 states. Second operand 6 states. [2020-04-18 19:10:13,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:10:13,477 INFO L93 Difference]: Finished difference Result 20344 states and 70386 transitions. [2020-04-18 19:10:13,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 19:10:13,479 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-04-18 19:10:13,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:10:13,566 INFO L225 Difference]: With dead ends: 20344 [2020-04-18 19:10:13,567 INFO L226 Difference]: Without dead ends: 6604 [2020-04-18 19:10:13,572 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-04-18 19:10:13,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6604 states. [2020-04-18 19:10:14,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6604 to 5470. [2020-04-18 19:10:14,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5470 states. [2020-04-18 19:10:14,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5470 states to 5470 states and 18555 transitions. [2020-04-18 19:10:14,039 INFO L78 Accepts]: Start accepts. Automaton has 5470 states and 18555 transitions. Word has length 36 [2020-04-18 19:10:14,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:10:14,041 INFO L479 AbstractCegarLoop]: Abstraction has 5470 states and 18555 transitions. [2020-04-18 19:10:14,044 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 19:10:14,045 INFO L276 IsEmpty]: Start isEmpty. Operand 5470 states and 18555 transitions. [2020-04-18 19:10:14,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 19:10:14,060 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:10:14,068 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:10:14,068 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:10:14,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:10:14,069 INFO L82 PathProgramCache]: Analyzing trace with hash 57831617, now seen corresponding path program 1 times [2020-04-18 19:10:14,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:10:14,070 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1412151167] [2020-04-18 19:10:14,071 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:10:14,077 INFO L259 McrAutomatonBuilder]: Finished intersection with 79 states and 118 transitions. [2020-04-18 19:10:14,080 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states. [2020-04-18 19:10:14,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 19:10:14,082 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:10:14,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:10:14,083 INFO L82 PathProgramCache]: Analyzing trace with hash 57831617, now seen corresponding path program 2 times [2020-04-18 19:10:14,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:10:14,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012921769] [2020-04-18 19:10:14,084 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:10:14,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:10:14,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:10:14,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012921769] [2020-04-18 19:10:14,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:10:14,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:10:14,274 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:10:14,278 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:10:14,290 INFO L259 McrAutomatonBuilder]: Finished intersection with 67 states and 94 transitions. [2020-04-18 19:10:14,290 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:10:14,335 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:10:14,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:10:14,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:10:14,336 INFO L87 Difference]: Start difference. First operand 79 states. Second operand 7 states. [2020-04-18 19:10:14,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:10:14,410 INFO L93 Difference]: Finished difference Result 79 states and 118 transitions. [2020-04-18 19:10:14,410 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 118 transitions. [2020-04-18 19:10:14,410 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:10:14,411 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1412151167] [2020-04-18 19:10:14,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:10:14,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:10:14,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1412151167] [2020-04-18 19:10:14,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 19:10:14,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:10:14,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:10:14,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-04-18 19:10:14,416 INFO L87 Difference]: Start difference. First operand 5470 states and 18555 transitions. Second operand 7 states. [2020-04-18 19:10:14,772 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2020-04-18 19:10:14,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:10:14,820 INFO L93 Difference]: Finished difference Result 7572 states and 25260 transitions. [2020-04-18 19:10:14,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 19:10:14,821 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-04-18 19:10:14,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:10:14,867 INFO L225 Difference]: With dead ends: 7572 [2020-04-18 19:10:14,867 INFO L226 Difference]: Without dead ends: 6028 [2020-04-18 19:10:14,878 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-04-18 19:10:14,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6028 states. [2020-04-18 19:10:15,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6028 to 4884. [2020-04-18 19:10:15,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4884 states. [2020-04-18 19:10:15,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4884 states to 4884 states and 16403 transitions. [2020-04-18 19:10:15,079 INFO L78 Accepts]: Start accepts. Automaton has 4884 states and 16403 transitions. Word has length 38 [2020-04-18 19:10:15,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:10:15,080 INFO L479 AbstractCegarLoop]: Abstraction has 4884 states and 16403 transitions. [2020-04-18 19:10:15,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 19:10:15,080 INFO L276 IsEmpty]: Start isEmpty. Operand 4884 states and 16403 transitions. [2020-04-18 19:10:15,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 19:10:15,091 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:10:15,091 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:10:15,091 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:10:15,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:10:15,092 INFO L82 PathProgramCache]: Analyzing trace with hash 628816319, now seen corresponding path program 1 times [2020-04-18 19:10:15,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:10:15,092 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1398264476] [2020-04-18 19:10:15,094 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:10:15,095 INFO L259 McrAutomatonBuilder]: Finished intersection with 71 states and 102 transitions. [2020-04-18 19:10:15,096 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states. [2020-04-18 19:10:15,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 19:10:15,097 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:10:15,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:10:15,097 INFO L82 PathProgramCache]: Analyzing trace with hash 628816319, now seen corresponding path program 2 times [2020-04-18 19:10:15,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:10:15,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759698764] [2020-04-18 19:10:15,098 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:10:15,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:10:15,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:10:15,268 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759698764] [2020-04-18 19:10:15,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:10:15,269 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:10:15,269 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:10:15,273 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:10:15,279 INFO L259 McrAutomatonBuilder]: Finished intersection with 59 states and 78 transitions. [2020-04-18 19:10:15,279 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:10:15,421 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 19:10:15,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:10:15,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-04-18 19:10:15,421 INFO L87 Difference]: Start difference. First operand 71 states. Second operand 8 states. [2020-04-18 19:10:15,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:10:15,558 INFO L93 Difference]: Finished difference Result 71 states and 102 transitions. [2020-04-18 19:10:15,558 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 102 transitions. [2020-04-18 19:10:15,558 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:10:15,559 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1398264476] [2020-04-18 19:10:15,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:10:15,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:10:15,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1398264476] [2020-04-18 19:10:15,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 19:10:15,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:10:15,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:10:15,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-04-18 19:10:15,561 INFO L87 Difference]: Start difference. First operand 4884 states and 16403 transitions. Second operand 8 states. [2020-04-18 19:10:16,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:10:16,118 INFO L93 Difference]: Finished difference Result 7997 states and 26470 transitions. [2020-04-18 19:10:16,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-04-18 19:10:16,119 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2020-04-18 19:10:16,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:10:16,169 INFO L225 Difference]: With dead ends: 7997 [2020-04-18 19:10:16,170 INFO L226 Difference]: Without dead ends: 6017 [2020-04-18 19:10:16,170 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=116, Invalid=264, Unknown=0, NotChecked=0, Total=380 [2020-04-18 19:10:16,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6017 states. [2020-04-18 19:10:16,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6017 to 4836. [2020-04-18 19:10:16,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4836 states. [2020-04-18 19:10:16,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4836 states to 4836 states and 16175 transitions. [2020-04-18 19:10:16,377 INFO L78 Accepts]: Start accepts. Automaton has 4836 states and 16175 transitions. Word has length 38 [2020-04-18 19:10:16,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:10:16,377 INFO L479 AbstractCegarLoop]: Abstraction has 4836 states and 16175 transitions. [2020-04-18 19:10:16,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 19:10:16,378 INFO L276 IsEmpty]: Start isEmpty. Operand 4836 states and 16175 transitions. [2020-04-18 19:10:16,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-04-18 19:10:16,392 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:10:16,396 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:10:16,396 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:10:16,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:10:16,397 INFO L82 PathProgramCache]: Analyzing trace with hash 795573810, now seen corresponding path program 1 times [2020-04-18 19:10:16,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:10:16,398 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [261279169] [2020-04-18 19:10:16,399 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:10:16,403 INFO L259 McrAutomatonBuilder]: Finished intersection with 181 states and 384 transitions. [2020-04-18 19:10:16,405 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states. [2020-04-18 19:10:16,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-04-18 19:10:16,406 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:10:16,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:10:16,407 INFO L82 PathProgramCache]: Analyzing trace with hash -1317030912, now seen corresponding path program 2 times [2020-04-18 19:10:16,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:10:16,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167831067] [2020-04-18 19:10:16,408 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:10:16,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:10:16,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:10:16,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167831067] [2020-04-18 19:10:16,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:10:16,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:10:16,591 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:10:16,595 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:10:16,611 INFO L259 McrAutomatonBuilder]: Finished intersection with 133 states and 264 transitions. [2020-04-18 19:10:16,611 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:10:16,752 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 11 times. [2020-04-18 19:10:16,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 19:10:16,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-04-18 19:10:16,753 INFO L87 Difference]: Start difference. First operand 181 states. Second operand 10 states. [2020-04-18 19:10:16,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:10:16,833 INFO L93 Difference]: Finished difference Result 181 states and 384 transitions. [2020-04-18 19:10:16,833 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 384 transitions. [2020-04-18 19:10:16,833 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:10:16,834 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [261279169] [2020-04-18 19:10:16,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:10:16,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:10:16,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [261279169] [2020-04-18 19:10:16,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-04-18 19:10:16,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:10:16,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 19:10:16,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2020-04-18 19:10:16,836 INFO L87 Difference]: Start difference. First operand 4836 states and 16175 transitions. Second operand 10 states. [2020-04-18 19:10:17,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:10:17,139 INFO L93 Difference]: Finished difference Result 6638 states and 21843 transitions. [2020-04-18 19:10:17,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-04-18 19:10:17,140 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2020-04-18 19:10:17,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:10:17,169 INFO L225 Difference]: With dead ends: 6638 [2020-04-18 19:10:17,169 INFO L226 Difference]: Without dead ends: 4834 [2020-04-18 19:10:17,170 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=201, Unknown=0, NotChecked=0, Total=306 [2020-04-18 19:10:17,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4834 states. [2020-04-18 19:10:17,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4834 to 3537. [2020-04-18 19:10:17,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3537 states. [2020-04-18 19:10:17,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3537 states to 3537 states and 11616 transitions. [2020-04-18 19:10:17,317 INFO L78 Accepts]: Start accepts. Automaton has 3537 states and 11616 transitions. Word has length 40 [2020-04-18 19:10:17,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:10:17,319 INFO L479 AbstractCegarLoop]: Abstraction has 3537 states and 11616 transitions. [2020-04-18 19:10:17,319 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-04-18 19:10:17,319 INFO L276 IsEmpty]: Start isEmpty. Operand 3537 states and 11616 transitions. [2020-04-18 19:10:17,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 19:10:17,329 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:10:17,329 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:10:17,329 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:10:17,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:10:17,330 INFO L82 PathProgramCache]: Analyzing trace with hash -393434084, now seen corresponding path program 1 times [2020-04-18 19:10:17,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:10:17,331 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [128678855] [2020-04-18 19:10:17,332 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:10:17,337 INFO L259 McrAutomatonBuilder]: Finished intersection with 188 states and 405 transitions. [2020-04-18 19:10:17,339 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states. [2020-04-18 19:10:17,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 19:10:17,340 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:10:17,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:10:17,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1396861788, now seen corresponding path program 2 times [2020-04-18 19:10:17,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:10:17,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830028106] [2020-04-18 19:10:17,342 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:10:17,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:10:17,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:10:17,505 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830028106] [2020-04-18 19:10:17,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:10:17,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:10:17,506 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:10:17,510 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:10:17,522 INFO L259 McrAutomatonBuilder]: Finished intersection with 98 states and 165 transitions. [2020-04-18 19:10:17,522 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:10:17,610 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 12 times. [2020-04-18 19:10:17,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:10:17,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-04-18 19:10:17,611 INFO L87 Difference]: Start difference. First operand 188 states. Second operand 8 states. [2020-04-18 19:10:17,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:10:17,843 INFO L93 Difference]: Finished difference Result 223 states and 448 transitions. [2020-04-18 19:10:17,844 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 448 transitions. [2020-04-18 19:10:17,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 19:10:17,845 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:10:17,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:10:17,845 INFO L82 PathProgramCache]: Analyzing trace with hash -393434084, now seen corresponding path program 3 times [2020-04-18 19:10:17,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:10:17,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526287259] [2020-04-18 19:10:17,846 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:10:17,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:10:17,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:10:17,990 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526287259] [2020-04-18 19:10:17,990 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:10:17,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:10:17,991 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:10:17,996 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:10:18,014 INFO L259 McrAutomatonBuilder]: Finished intersection with 122 states and 237 transitions. [2020-04-18 19:10:18,014 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:10:18,808 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 32 times. [2020-04-18 19:10:18,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-04-18 19:10:18,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=672, Unknown=0, NotChecked=0, Total=870 [2020-04-18 19:10:18,810 INFO L87 Difference]: Start difference. First operand 223 states and 448 transitions. Second operand 21 states. [2020-04-18 19:10:19,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:10:19,030 INFO L93 Difference]: Finished difference Result 223 states and 448 transitions. [2020-04-18 19:10:19,031 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 448 transitions. [2020-04-18 19:10:19,031 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:10:19,032 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [128678855] [2020-04-18 19:10:19,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:10:19,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 19:10:19,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [128678855] [2020-04-18 19:10:19,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-04-18 19:10:19,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:10:19,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-04-18 19:10:19,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=377, Invalid=1029, Unknown=0, NotChecked=0, Total=1406 [2020-04-18 19:10:19,034 INFO L87 Difference]: Start difference. First operand 3537 states and 11616 transitions. Second operand 23 states. [2020-04-18 19:10:19,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:10:19,401 INFO L93 Difference]: Finished difference Result 5161 states and 16970 transitions. [2020-04-18 19:10:19,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-04-18 19:10:19,402 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 41 [2020-04-18 19:10:19,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:10:19,413 INFO L225 Difference]: With dead ends: 5161 [2020-04-18 19:10:19,413 INFO L226 Difference]: Without dead ends: 2830 [2020-04-18 19:10:19,414 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=547, Invalid=1345, Unknown=0, NotChecked=0, Total=1892 [2020-04-18 19:10:19,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2830 states. [2020-04-18 19:10:19,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2830 to 2578. [2020-04-18 19:10:19,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2578 states. [2020-04-18 19:10:19,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2578 states to 2578 states and 8358 transitions. [2020-04-18 19:10:19,496 INFO L78 Accepts]: Start accepts. Automaton has 2578 states and 8358 transitions. Word has length 41 [2020-04-18 19:10:19,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:10:19,496 INFO L479 AbstractCegarLoop]: Abstraction has 2578 states and 8358 transitions. [2020-04-18 19:10:19,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-04-18 19:10:19,496 INFO L276 IsEmpty]: Start isEmpty. Operand 2578 states and 8358 transitions. [2020-04-18 19:10:19,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 19:10:19,503 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:10:19,503 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:10:19,503 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:10:19,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:10:19,503 INFO L82 PathProgramCache]: Analyzing trace with hash -296220260, now seen corresponding path program 1 times [2020-04-18 19:10:19,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:10:19,504 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [570230180] [2020-04-18 19:10:19,505 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:10:19,510 INFO L259 McrAutomatonBuilder]: Finished intersection with 244 states and 552 transitions. [2020-04-18 19:10:19,512 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states. [2020-04-18 19:10:19,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 19:10:19,513 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:10:19,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:10:19,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1494075612, now seen corresponding path program 2 times [2020-04-18 19:10:19,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:10:19,514 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091799125] [2020-04-18 19:10:19,514 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:10:19,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:10:19,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:10:19,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091799125] [2020-04-18 19:10:19,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:10:19,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:10:19,599 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:10:19,603 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:10:19,616 INFO L259 McrAutomatonBuilder]: Finished intersection with 116 states and 206 transitions. [2020-04-18 19:10:19,616 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:10:19,678 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 13 times. [2020-04-18 19:10:19,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:10:19,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:10:19,679 INFO L87 Difference]: Start difference. First operand 244 states. Second operand 7 states. [2020-04-18 19:10:19,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:10:19,899 INFO L93 Difference]: Finished difference Result 338 states and 740 transitions. [2020-04-18 19:10:19,899 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 740 transitions. [2020-04-18 19:10:19,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 19:10:19,900 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:10:19,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:10:19,901 INFO L82 PathProgramCache]: Analyzing trace with hash -296220260, now seen corresponding path program 3 times [2020-04-18 19:10:19,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:10:19,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345501311] [2020-04-18 19:10:19,901 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:10:19,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:10:20,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:10:20,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345501311] [2020-04-18 19:10:20,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:10:20,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:10:20,003 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:10:20,007 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:10:20,021 INFO L259 McrAutomatonBuilder]: Finished intersection with 112 states and 198 transitions. [2020-04-18 19:10:20,021 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:10:20,244 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 10 times. [2020-04-18 19:10:20,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 19:10:20,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2020-04-18 19:10:20,245 INFO L87 Difference]: Start difference. First operand 338 states and 740 transitions. Second operand 13 states. [2020-04-18 19:10:20,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:10:20,354 INFO L93 Difference]: Finished difference Result 338 states and 740 transitions. [2020-04-18 19:10:20,354 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 740 transitions. [2020-04-18 19:10:20,355 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:10:20,356 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [570230180] [2020-04-18 19:10:20,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:10:20,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 19:10:20,357 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [570230180] [2020-04-18 19:10:20,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-04-18 19:10:20,357 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:10:20,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-18 19:10:20,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=357, Unknown=0, NotChecked=0, Total=506 [2020-04-18 19:10:20,358 INFO L87 Difference]: Start difference. First operand 2578 states and 8358 transitions. Second operand 14 states. [2020-04-18 19:10:20,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:10:20,601 INFO L93 Difference]: Finished difference Result 3658 states and 11752 transitions. [2020-04-18 19:10:20,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-04-18 19:10:20,602 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 42 [2020-04-18 19:10:20,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:10:20,609 INFO L225 Difference]: With dead ends: 3658 [2020-04-18 19:10:20,609 INFO L226 Difference]: Without dead ends: 1600 [2020-04-18 19:10:20,609 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=203, Invalid=447, Unknown=0, NotChecked=0, Total=650 [2020-04-18 19:10:20,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1600 states. [2020-04-18 19:10:20,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1600 to 1600. [2020-04-18 19:10:20,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1600 states. [2020-04-18 19:10:20,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1600 states to 1600 states and 4950 transitions. [2020-04-18 19:10:20,649 INFO L78 Accepts]: Start accepts. Automaton has 1600 states and 4950 transitions. Word has length 42 [2020-04-18 19:10:20,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:10:20,649 INFO L479 AbstractCegarLoop]: Abstraction has 1600 states and 4950 transitions. [2020-04-18 19:10:20,649 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-04-18 19:10:20,650 INFO L276 IsEmpty]: Start isEmpty. Operand 1600 states and 4950 transitions. [2020-04-18 19:10:20,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:10:20,654 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:10:20,654 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:10:20,654 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:10:20,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:10:20,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1666156165, now seen corresponding path program 1 times [2020-04-18 19:10:20,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:10:20,655 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [564752622] [2020-04-18 19:10:20,657 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:10:20,675 INFO L259 McrAutomatonBuilder]: Finished intersection with 928 states and 2844 transitions. [2020-04-18 19:10:20,682 INFO L276 IsEmpty]: Start isEmpty. Operand 928 states. [2020-04-18 19:10:20,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:10:20,686 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:10:20,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:10:20,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1097895237, now seen corresponding path program 2 times [2020-04-18 19:10:20,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:10:20,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380778225] [2020-04-18 19:10:20,687 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:10:20,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:10:20,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:10:20,794 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380778225] [2020-04-18 19:10:20,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:10:20,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:10:20,794 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:10:20,799 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:10:20,838 INFO L259 McrAutomatonBuilder]: Finished intersection with 236 states and 530 transitions. [2020-04-18 19:10:20,838 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:10:20,902 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 9 times. [2020-04-18 19:10:20,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:10:20,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:10:20,903 INFO L87 Difference]: Start difference. First operand 928 states. Second operand 7 states. [2020-04-18 19:10:21,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:10:21,123 INFO L93 Difference]: Finished difference Result 1554 states and 4613 transitions. [2020-04-18 19:10:21,123 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 4613 transitions. [2020-04-18 19:10:21,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:10:21,127 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:10:21,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:10:21,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1666156165, now seen corresponding path program 3 times [2020-04-18 19:10:21,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:10:21,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041077097] [2020-04-18 19:10:21,128 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:10:21,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:10:21,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:10:21,203 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041077097] [2020-04-18 19:10:21,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:10:21,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:10:21,204 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:10:21,208 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:10:21,243 INFO L259 McrAutomatonBuilder]: Finished intersection with 232 states and 522 transitions. [2020-04-18 19:10:21,243 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:10:21,269 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:10:21,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:10:21,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-04-18 19:10:21,270 INFO L87 Difference]: Start difference. First operand 1554 states and 4613 transitions. Second operand 7 states. [2020-04-18 19:10:21,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:10:21,459 INFO L93 Difference]: Finished difference Result 1874 states and 5287 transitions. [2020-04-18 19:10:21,460 INFO L276 IsEmpty]: Start isEmpty. Operand 1874 states and 5287 transitions. [2020-04-18 19:10:21,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:10:21,463 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:10:21,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:10:21,464 INFO L82 PathProgramCache]: Analyzing trace with hash 445351109, now seen corresponding path program 4 times [2020-04-18 19:10:21,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:10:21,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636411273] [2020-04-18 19:10:21,465 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:10:21,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:10:21,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:10:21,561 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636411273] [2020-04-18 19:10:21,561 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:10:21,561 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:10:21,562 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:10:21,568 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:10:21,609 INFO L259 McrAutomatonBuilder]: Finished intersection with 252 states and 578 transitions. [2020-04-18 19:10:21,609 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:10:21,719 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 20 times. [2020-04-18 19:10:21,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:10:21,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=360, Unknown=0, NotChecked=0, Total=506 [2020-04-18 19:10:21,720 INFO L87 Difference]: Start difference. First operand 1874 states and 5287 transitions. Second operand 9 states. [2020-04-18 19:10:22,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:10:22,040 INFO L93 Difference]: Finished difference Result 1928 states and 5364 transitions. [2020-04-18 19:10:22,040 INFO L276 IsEmpty]: Start isEmpty. Operand 1928 states and 5364 transitions. [2020-04-18 19:10:22,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:10:22,044 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 19:10:22,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:10:22,045 INFO L82 PathProgramCache]: Analyzing trace with hash 1013612037, now seen corresponding path program 5 times [2020-04-18 19:10:22,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:10:22,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883700302] [2020-04-18 19:10:22,046 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:10:22,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:10:22,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:10:22,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883700302] [2020-04-18 19:10:22,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:10:22,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:10:22,144 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:10:22,148 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:10:22,175 INFO L259 McrAutomatonBuilder]: Finished intersection with 258 states and 598 transitions. [2020-04-18 19:10:22,175 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:10:22,331 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 27 times. [2020-04-18 19:10:22,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-18 19:10:22,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=722, Unknown=0, NotChecked=0, Total=992 [2020-04-18 19:10:22,333 INFO L87 Difference]: Start difference. First operand 1928 states and 5364 transitions. Second operand 14 states. [2020-04-18 19:10:22,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:10:22,958 INFO L93 Difference]: Finished difference Result 1978 states and 5437 transitions. [2020-04-18 19:10:22,958 INFO L276 IsEmpty]: Start isEmpty. Operand 1978 states and 5437 transitions. [2020-04-18 19:10:22,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:10:22,963 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 19:10:22,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:10:22,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1590955707, now seen corresponding path program 6 times [2020-04-18 19:10:22,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:10:22,964 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660676649] [2020-04-18 19:10:22,964 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:10:22,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:10:23,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:10:23,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660676649] [2020-04-18 19:10:23,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:10:23,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:10:23,056 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:10:23,059 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:10:23,090 INFO L259 McrAutomatonBuilder]: Finished intersection with 222 states and 502 transitions. [2020-04-18 19:10:23,090 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:10:23,170 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 16 times. [2020-04-18 19:10:23,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 19:10:23,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=413, Invalid=1309, Unknown=0, NotChecked=0, Total=1722 [2020-04-18 19:10:23,172 INFO L87 Difference]: Start difference. First operand 1978 states and 5437 transitions. Second operand 13 states. [2020-04-18 19:10:23,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:10:23,600 INFO L93 Difference]: Finished difference Result 2250 states and 5978 transitions. [2020-04-18 19:10:23,600 INFO L276 IsEmpty]: Start isEmpty. Operand 2250 states and 5978 transitions. [2020-04-18 19:10:23,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:10:23,605 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 19:10:23,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:10:23,606 INFO L82 PathProgramCache]: Analyzing trace with hash -1858029571, now seen corresponding path program 7 times [2020-04-18 19:10:23,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:10:23,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450723410] [2020-04-18 19:10:23,606 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:10:23,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:10:23,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:10:23,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450723410] [2020-04-18 19:10:23,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:10:23,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:10:23,709 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:10:23,712 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:10:23,746 INFO L259 McrAutomatonBuilder]: Finished intersection with 199 states and 448 transitions. [2020-04-18 19:10:23,746 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:10:23,915 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 20 times. [2020-04-18 19:10:23,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 19:10:23,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=556, Invalid=2306, Unknown=0, NotChecked=0, Total=2862 [2020-04-18 19:10:23,917 INFO L87 Difference]: Start difference. First operand 2250 states and 5978 transitions. Second operand 16 states. [2020-04-18 19:10:24,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:10:24,480 INFO L93 Difference]: Finished difference Result 2592 states and 6613 transitions. [2020-04-18 19:10:24,480 INFO L276 IsEmpty]: Start isEmpty. Operand 2592 states and 6613 transitions. [2020-04-18 19:10:24,485 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:10:24,485 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [564752622] [2020-04-18 19:10:24,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:10:24,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 19:10:24,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [564752622] [2020-04-18 19:10:24,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-04-18 19:10:24,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:10:24,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-04-18 19:10:24,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=713, Invalid=3069, Unknown=0, NotChecked=0, Total=3782 [2020-04-18 19:10:24,488 INFO L87 Difference]: Start difference. First operand 1600 states and 4950 transitions. Second operand 25 states. [2020-04-18 19:10:24,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:10:24,797 INFO L93 Difference]: Finished difference Result 1472 states and 4534 transitions. [2020-04-18 19:10:24,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-04-18 19:10:24,798 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 45 [2020-04-18 19:10:24,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:10:24,798 INFO L225 Difference]: With dead ends: 1472 [2020-04-18 19:10:24,799 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 19:10:24,800 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 388 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1642 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=880, Invalid=4090, Unknown=0, NotChecked=0, Total=4970 [2020-04-18 19:10:24,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 19:10:24,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 19:10:24,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 19:10:24,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 19:10:24,801 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 45 [2020-04-18 19:10:24,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:10:24,801 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 19:10:24,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-04-18 19:10:24,801 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 19:10:24,801 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:10:24,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 07:10:24 BasicIcfg [2020-04-18 19:10:24,806 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 19:10:24,807 INFO L168 Benchmark]: Toolchain (without parser) took 14522.94 ms. Allocated memory was 138.9 MB in the beginning and 638.6 MB in the end (delta: 499.6 MB). Free memory was 102.8 MB in the beginning and 337.6 MB in the end (delta: -234.8 MB). Peak memory consumption was 264.8 MB. Max. memory is 7.1 GB. [2020-04-18 19:10:24,808 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 138.9 MB. Free memory was 122.1 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-04-18 19:10:24,809 INFO L168 Benchmark]: CACSL2BoogieTranslator took 734.69 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 100.8 MB in the beginning and 157.5 MB in the end (delta: -56.7 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2020-04-18 19:10:24,810 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.10 ms. Allocated memory is still 202.4 MB. Free memory was 156.8 MB in the beginning and 154.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 19:10:24,810 INFO L168 Benchmark]: Boogie Preprocessor took 34.05 ms. Allocated memory is still 202.4 MB. Free memory was 154.8 MB in the beginning and 153.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 19:10:24,811 INFO L168 Benchmark]: RCFGBuilder took 432.37 ms. Allocated memory is still 202.4 MB. Free memory was 153.5 MB in the beginning and 131.0 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2020-04-18 19:10:24,812 INFO L168 Benchmark]: TraceAbstraction took 13235.45 ms. Allocated memory was 202.4 MB in the beginning and 638.6 MB in the end (delta: 436.2 MB). Free memory was 131.0 MB in the beginning and 337.6 MB in the end (delta: -206.6 MB). Peak memory consumption was 229.6 MB. Max. memory is 7.1 GB. [2020-04-18 19:10:24,815 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 138.9 MB. Free memory was 122.1 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 734.69 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 100.8 MB in the beginning and 157.5 MB in the end (delta: -56.7 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 57.10 ms. Allocated memory is still 202.4 MB. Free memory was 156.8 MB in the beginning and 154.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 34.05 ms. Allocated memory is still 202.4 MB. Free memory was 154.8 MB in the beginning and 153.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 432.37 ms. Allocated memory is still 202.4 MB. Free memory was 153.5 MB in the beginning and 131.0 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13235.45 ms. Allocated memory was 202.4 MB in the beginning and 638.6 MB in the end (delta: 436.2 MB). Free memory was 131.0 MB in the beginning and 337.6 MB in the end (delta: -206.6 MB). Peak memory consumption was 229.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: 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 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 13.0s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.5s, HoareTripleCheckerStatistics: 723 SDtfs, 2321 SDslu, 3759 SDs, 0 SdLazy, 568 SolverSat, 130 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 947 GetRequests, 754 SyntacticMatches, 2 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2319 ImplicationChecksByTransitivity, 4.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8472occurred 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: 1.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 5008 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...