/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-VariableLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe028_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 15:32:19,966 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 15:32:19,968 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 15:32:19,986 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 15:32:19,987 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 15:32:19,989 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 15:32:19,991 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 15:32:19,993 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 15:32:19,999 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 15:32:20,000 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 15:32:20,001 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 15:32:20,002 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 15:32:20,002 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 15:32:20,003 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 15:32:20,005 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 15:32:20,006 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 15:32:20,007 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 15:32:20,008 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 15:32:20,009 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 15:32:20,015 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 15:32:20,019 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 15:32:20,020 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 15:32:20,024 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 15:32:20,025 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 15:32:20,027 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 15:32:20,028 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 15:32:20,028 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 15:32:20,030 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 15:32:20,031 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 15:32:20,033 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 15:32:20,033 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 15:32:20,034 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 15:32:20,035 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 15:32:20,036 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 15:32:20,038 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 15:32:20,038 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 15:32:20,039 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 15:32:20,039 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 15:32:20,039 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 15:32:20,040 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 15:32:20,041 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 15:32:20,042 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-VariableLbe-McrStrategy.epf [2020-04-18 15:32:20,077 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 15:32:20,077 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 15:32:20,078 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 15:32:20,078 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 15:32:20,078 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 15:32:20,079 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 15:32:20,079 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 15:32:20,081 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 15:32:20,081 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 15:32:20,082 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 15:32:20,082 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 15:32:20,082 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 15:32:20,082 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 15:32:20,082 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 15:32:20,083 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 15:32:20,083 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 15:32:20,083 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 15:32:20,083 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 15:32:20,083 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 15:32:20,083 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 15:32:20,084 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 15:32:20,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 15:32:20,085 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 15:32:20,085 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 15:32:20,085 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 15:32:20,086 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 15:32:20,086 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 15:32:20,086 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 15:32:20,086 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 15:32:20,087 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 15:32:20,087 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 15:32:20,368 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 15:32:20,389 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 15:32:20,393 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 15:32:20,394 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 15:32:20,395 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 15:32:20,396 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe028_pso.opt.i [2020-04-18 15:32:20,469 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cbd163d36/0a415b636fc4477480d0f5eaa9fd4f47/FLAG45136050e [2020-04-18 15:32:21,040 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 15:32:21,040 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe028_pso.opt.i [2020-04-18 15:32:21,062 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cbd163d36/0a415b636fc4477480d0f5eaa9fd4f47/FLAG45136050e [2020-04-18 15:32:21,293 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cbd163d36/0a415b636fc4477480d0f5eaa9fd4f47 [2020-04-18 15:32:21,301 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 15:32:21,324 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 15:32:21,325 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 15:32:21,326 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 15:32:21,329 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 15:32:21,330 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:32:21" (1/1) ... [2020-04-18 15:32:21,333 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51600ac4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:32:21, skipping insertion in model container [2020-04-18 15:32:21,333 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:32:21" (1/1) ... [2020-04-18 15:32:21,341 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 15:32:21,401 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 15:32:21,895 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:32:21,910 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 15:32:21,985 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:32:22,063 INFO L208 MainTranslator]: Completed translation [2020-04-18 15:32:22,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:32:22 WrapperNode [2020-04-18 15:32:22,063 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 15:32:22,064 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 15:32:22,064 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 15:32:22,065 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 15:32:22,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:32:22" (1/1) ... [2020-04-18 15:32:22,091 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:32:22" (1/1) ... [2020-04-18 15:32:22,114 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 15:32:22,114 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 15:32:22,114 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 15:32:22,115 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 15:32:22,124 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:32:22" (1/1) ... [2020-04-18 15:32:22,124 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:32:22" (1/1) ... [2020-04-18 15:32:22,127 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:32:22" (1/1) ... [2020-04-18 15:32:22,127 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:32:22" (1/1) ... [2020-04-18 15:32:22,134 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:32:22" (1/1) ... [2020-04-18 15:32:22,136 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:32:22" (1/1) ... [2020-04-18 15:32:22,138 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:32:22" (1/1) ... [2020-04-18 15:32:22,142 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 15:32:22,142 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 15:32:22,142 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 15:32:22,142 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 15:32:22,143 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:32:22" (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 15:32:22,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 15:32:22,205 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 15:32:22,206 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 15:32:22,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 15:32:22,206 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 15:32:22,206 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 15:32:22,206 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 15:32:22,206 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 15:32:22,207 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 15:32:22,207 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 15:32:22,207 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 15:32:22,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 15:32:22,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 15:32:22,208 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 15:32:22,569 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 15:32:22,569 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 15:32:22,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:32:22 BoogieIcfgContainer [2020-04-18 15:32:22,573 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 15:32:22,575 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 15:32:22,575 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 15:32:22,578 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 15:32:22,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:32:21" (1/3) ... [2020-04-18 15:32:22,579 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77b552fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:32:22, skipping insertion in model container [2020-04-18 15:32:22,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:32:22" (2/3) ... [2020-04-18 15:32:22,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77b552fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:32:22, skipping insertion in model container [2020-04-18 15:32:22,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:32:22" (3/3) ... [2020-04-18 15:32:22,582 INFO L109 eAbstractionObserver]: Analyzing ICFG safe028_pso.opt.i [2020-04-18 15:32:22,592 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 15:32:22,592 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 15:32:22,598 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 15:32:22,599 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 15:32:22,635 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:32:22,635 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:32:22,635 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:32:22,636 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:32:22,637 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:32:22,637 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:32:22,638 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:32:22,638 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:32:22,639 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:32:22,639 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:32:22,639 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:32:22,639 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:32:22,640 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:32:22,641 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:32:22,641 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:32:22,641 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:32:22,642 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:32:22,642 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:32:22,649 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:32:22,650 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:32:22,650 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:32:22,650 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:32:22,657 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:32:22,658 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:32:22,658 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:32:22,658 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:32:22,661 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:32:22,661 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:32:22,661 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:32:22,662 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:32:22,677 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 15:32:22,694 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 15:32:22,694 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 15:32:22,695 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 15:32:22,695 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 15:32:22,695 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 15:32:22,695 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 15:32:22,695 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 15:32:22,695 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 15:32:22,711 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-04-18 15:32:22,713 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-18 15:32:22,756 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-18 15:32:22,756 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:32:22,761 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-04-18 15:32:22,764 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-18 15:32:22,787 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-18 15:32:22,788 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:32:22,789 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-04-18 15:32:22,791 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1178 [2020-04-18 15:32:22,792 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 15:32:24,400 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2037 [2020-04-18 15:32:24,401 INFO L214 etLargeBlockEncoding]: Total number of compositions: 54 [2020-04-18 15:32:24,405 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 20 transitions, 55 flow [2020-04-18 15:32:24,428 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 226 states. [2020-04-18 15:32:24,430 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states. [2020-04-18 15:32:24,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 15:32:24,438 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:32:24,439 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:32:24,439 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:32:24,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:32:24,445 INFO L82 PathProgramCache]: Analyzing trace with hash 2007579917, now seen corresponding path program 1 times [2020-04-18 15:32:24,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:32:24,450 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [56343041] [2020-04-18 15:32:24,466 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:32:24,479 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 15:32:24,481 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 15:32:24,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 15:32:24,482 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:32:24,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:32:24,482 INFO L82 PathProgramCache]: Analyzing trace with hash 2007579917, now seen corresponding path program 2 times [2020-04-18 15:32:24,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:32:24,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251427293] [2020-04-18 15:32:24,487 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:32:24,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:32:24,690 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 15:32:24,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251427293] [2020-04-18 15:32:24,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:32:24,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 15:32:24,693 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:32:24,694 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:32:24,697 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 15:32:24,698 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:32:24,705 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:32:24,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:32:24,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:32:24,711 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2020-04-18 15:32:24,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:32:24,715 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-04-18 15:32:24,715 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-04-18 15:32:24,716 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:32:24,716 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [56343041] [2020-04-18 15:32:24,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:32:24,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 15:32:24,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [56343041] [2020-04-18 15:32:24,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 15:32:24,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:32:24,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:32:24,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:32:24,723 INFO L87 Difference]: Start difference. First operand 226 states. Second operand 3 states. [2020-04-18 15:32:24,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:32:24,749 INFO L93 Difference]: Finished difference Result 214 states and 593 transitions. [2020-04-18 15:32:24,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 15:32:24,751 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 15:32:24,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:32:24,765 INFO L225 Difference]: With dead ends: 214 [2020-04-18 15:32:24,765 INFO L226 Difference]: Without dead ends: 166 [2020-04-18 15:32:24,767 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:32:24,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-04-18 15:32:24,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2020-04-18 15:32:24,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-04-18 15:32:24,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 441 transitions. [2020-04-18 15:32:24,828 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 441 transitions. Word has length 8 [2020-04-18 15:32:24,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:32:24,829 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 441 transitions. [2020-04-18 15:32:24,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 15:32:24,830 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 441 transitions. [2020-04-18 15:32:24,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:32:24,831 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:32:24,831 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:32:24,832 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:32:24,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:32:24,832 INFO L82 PathProgramCache]: Analyzing trace with hash 2105434478, now seen corresponding path program 1 times [2020-04-18 15:32:24,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:32:24,833 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [76601982] [2020-04-18 15:32:24,833 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:32:24,834 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 13 transitions. [2020-04-18 15:32:24,834 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-04-18 15:32:24,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:32:24,835 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:32:24,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:32:24,835 INFO L82 PathProgramCache]: Analyzing trace with hash 2105434478, now seen corresponding path program 2 times [2020-04-18 15:32:24,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:32:24,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358600076] [2020-04-18 15:32:24,836 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:32:24,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:32:24,913 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 15:32:24,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358600076] [2020-04-18 15:32:24,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:32:24,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:32:24,918 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:32:24,919 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:32:24,922 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 11 transitions. [2020-04-18 15:32:24,923 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:32:24,942 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:32:24,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:32:24,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:32:24,943 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 4 states. [2020-04-18 15:32:24,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:32:24,954 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2020-04-18 15:32:24,954 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2020-04-18 15:32:24,955 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:32:24,955 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [76601982] [2020-04-18 15:32:24,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:32:24,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:32:24,955 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [76601982] [2020-04-18 15:32:24,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 15:32:24,956 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:32:24,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:32:24,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:32:24,957 INFO L87 Difference]: Start difference. First operand 166 states and 441 transitions. Second operand 4 states. [2020-04-18 15:32:24,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:32:24,977 INFO L93 Difference]: Finished difference Result 202 states and 516 transitions. [2020-04-18 15:32:24,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 15:32:24,978 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-18 15:32:24,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:32:24,980 INFO L225 Difference]: With dead ends: 202 [2020-04-18 15:32:24,980 INFO L226 Difference]: Without dead ends: 130 [2020-04-18 15:32:24,982 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:32:24,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-04-18 15:32:24,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2020-04-18 15:32:24,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-04-18 15:32:24,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 322 transitions. [2020-04-18 15:32:24,996 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 322 transitions. Word has length 9 [2020-04-18 15:32:24,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:32:24,996 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 322 transitions. [2020-04-18 15:32:24,996 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 15:32:24,996 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 322 transitions. [2020-04-18 15:32:24,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:32:24,997 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:32:24,998 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:32:24,998 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:32:24,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:32:24,998 INFO L82 PathProgramCache]: Analyzing trace with hash 857303980, now seen corresponding path program 1 times [2020-04-18 15:32:24,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:32:24,999 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1622343427] [2020-04-18 15:32:24,999 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:32:25,000 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 30 transitions. [2020-04-18 15:32:25,000 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-04-18 15:32:25,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:32:25,001 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:32:25,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:32:25,001 INFO L82 PathProgramCache]: Analyzing trace with hash 857303980, now seen corresponding path program 2 times [2020-04-18 15:32:25,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:32:25,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290217198] [2020-04-18 15:32:25,002 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:32:25,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:32:25,096 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 15:32:25,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290217198] [2020-04-18 15:32:25,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:32:25,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:32:25,097 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:32:25,098 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:32:25,100 INFO L259 McrAutomatonBuilder]: Finished intersection with 15 states and 18 transitions. [2020-04-18 15:32:25,100 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:32:25,107 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:32:25,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:32:25,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:32:25,108 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 4 states. [2020-04-18 15:32:25,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:32:25,115 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2020-04-18 15:32:25,115 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 30 transitions. [2020-04-18 15:32:25,116 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:32:25,116 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1622343427] [2020-04-18 15:32:25,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:32:25,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:32:25,117 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1622343427] [2020-04-18 15:32:25,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 15:32:25,117 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:32:25,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:32:25,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:32:25,118 INFO L87 Difference]: Start difference. First operand 130 states and 322 transitions. Second operand 4 states. [2020-04-18 15:32:25,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:32:25,149 INFO L93 Difference]: Finished difference Result 148 states and 336 transitions. [2020-04-18 15:32:25,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 15:32:25,150 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-04-18 15:32:25,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:32:25,152 INFO L225 Difference]: With dead ends: 148 [2020-04-18 15:32:25,152 INFO L226 Difference]: Without dead ends: 112 [2020-04-18 15:32:25,153 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:32:25,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-04-18 15:32:25,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2020-04-18 15:32:25,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-04-18 15:32:25,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 253 transitions. [2020-04-18 15:32:25,163 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 253 transitions. Word has length 10 [2020-04-18 15:32:25,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:32:25,163 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 253 transitions. [2020-04-18 15:32:25,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 15:32:25,163 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 253 transitions. [2020-04-18 15:32:25,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:32:25,164 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:32:25,164 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:32:25,165 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:32:25,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:32:25,165 INFO L82 PathProgramCache]: Analyzing trace with hash 806230555, now seen corresponding path program 1 times [2020-04-18 15:32:25,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:32:25,165 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2077138498] [2020-04-18 15:32:25,166 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:32:25,167 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 47 transitions. [2020-04-18 15:32:25,167 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-04-18 15:32:25,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:32:25,168 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:32:25,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:32:25,168 INFO L82 PathProgramCache]: Analyzing trace with hash 806634175, now seen corresponding path program 2 times [2020-04-18 15:32:25,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:32:25,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254661698] [2020-04-18 15:32:25,169 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:32:25,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:32:25,256 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 15:32:25,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254661698] [2020-04-18 15:32:25,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:32:25,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:32:25,257 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:32:25,258 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:32:25,260 INFO L259 McrAutomatonBuilder]: Finished intersection with 18 states and 23 transitions. [2020-04-18 15:32:25,260 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:32:25,268 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:32:25,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:32:25,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:32:25,269 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 4 states. [2020-04-18 15:32:25,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:32:25,287 INFO L93 Difference]: Finished difference Result 32 states and 51 transitions. [2020-04-18 15:32:25,287 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 51 transitions. [2020-04-18 15:32:25,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:32:25,288 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:32:25,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:32:25,288 INFO L82 PathProgramCache]: Analyzing trace with hash 806230555, now seen corresponding path program 3 times [2020-04-18 15:32:25,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:32:25,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910270368] [2020-04-18 15:32:25,289 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:32:25,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:32:25,392 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 15:32:25,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910270368] [2020-04-18 15:32:25,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:32:25,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:32:25,393 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:32:25,394 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:32:25,396 INFO L259 McrAutomatonBuilder]: Finished intersection with 18 states and 23 transitions. [2020-04-18 15:32:25,396 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:32:25,469 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:32:25,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:32:25,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:32:25,470 INFO L87 Difference]: Start difference. First operand 32 states and 51 transitions. Second operand 6 states. [2020-04-18 15:32:25,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:32:25,495 INFO L93 Difference]: Finished difference Result 32 states and 51 transitions. [2020-04-18 15:32:25,496 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 51 transitions. [2020-04-18 15:32:25,496 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:32:25,496 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2077138498] [2020-04-18 15:32:25,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:32:25,497 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 15:32:25,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2077138498] [2020-04-18 15:32:25,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 15:32:25,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:32:25,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:32:25,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:32:25,498 INFO L87 Difference]: Start difference. First operand 112 states and 253 transitions. Second operand 6 states. [2020-04-18 15:32:25,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:32:25,586 INFO L93 Difference]: Finished difference Result 109 states and 227 transitions. [2020-04-18 15:32:25,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 15:32:25,587 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-04-18 15:32:25,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:32:25,588 INFO L225 Difference]: With dead ends: 109 [2020-04-18 15:32:25,588 INFO L226 Difference]: Without dead ends: 85 [2020-04-18 15:32:25,588 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:32:25,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-04-18 15:32:25,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2020-04-18 15:32:25,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-04-18 15:32:25,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 173 transitions. [2020-04-18 15:32:25,595 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 173 transitions. Word has length 11 [2020-04-18 15:32:25,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:32:25,595 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 173 transitions. [2020-04-18 15:32:25,595 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 15:32:25,595 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 173 transitions. [2020-04-18 15:32:25,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:32:25,596 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:32:25,596 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:32:25,597 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:32:25,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:32:25,597 INFO L82 PathProgramCache]: Analyzing trace with hash 1664906609, now seen corresponding path program 1 times [2020-04-18 15:32:25,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:32:25,597 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [720082782] [2020-04-18 15:32:25,600 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:32:25,601 INFO L259 McrAutomatonBuilder]: Finished intersection with 46 states and 89 transitions. [2020-04-18 15:32:25,603 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2020-04-18 15:32:25,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:32:25,604 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:32:25,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:32:25,604 INFO L82 PathProgramCache]: Analyzing trace with hash 2081333969, now seen corresponding path program 2 times [2020-04-18 15:32:25,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:32:25,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008364253] [2020-04-18 15:32:25,605 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:32:25,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:32:25,726 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 15:32:25,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008364253] [2020-04-18 15:32:25,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:32:25,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:32:25,728 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:32:25,729 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:32:25,732 INFO L259 McrAutomatonBuilder]: Finished intersection with 21 states and 27 transitions. [2020-04-18 15:32:25,732 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:32:25,742 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:32:25,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:32:25,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:32:25,743 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 4 states. [2020-04-18 15:32:25,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:32:25,771 INFO L93 Difference]: Finished difference Result 58 states and 105 transitions. [2020-04-18 15:32:25,772 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 105 transitions. [2020-04-18 15:32:25,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:32:25,773 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:32:25,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:32:25,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1693455149, now seen corresponding path program 3 times [2020-04-18 15:32:25,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:32:25,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757621254] [2020-04-18 15:32:25,775 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:32:25,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:32:25,866 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 15:32:25,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757621254] [2020-04-18 15:32:25,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:32:25,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:32:25,868 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:32:25,870 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:32:25,871 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 25 transitions. [2020-04-18 15:32:25,872 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:32:25,908 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:32:25,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:32:25,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:32:25,909 INFO L87 Difference]: Start difference. First operand 58 states and 105 transitions. Second operand 6 states. [2020-04-18 15:32:25,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:32:25,965 INFO L93 Difference]: Finished difference Result 60 states and 106 transitions. [2020-04-18 15:32:25,965 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 106 transitions. [2020-04-18 15:32:25,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:32:25,966 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:32:25,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:32:25,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1664906609, now seen corresponding path program 4 times [2020-04-18 15:32:25,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:32:25,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78190120] [2020-04-18 15:32:25,967 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:32:25,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:32:26,063 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 15:32:26,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78190120] [2020-04-18 15:32:26,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:32:26,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:32:26,064 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:32:26,066 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:32:26,068 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 25 transitions. [2020-04-18 15:32:26,068 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:32:26,093 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:32:26,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:32:26,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-04-18 15:32:26,094 INFO L87 Difference]: Start difference. First operand 60 states and 106 transitions. Second operand 7 states. [2020-04-18 15:32:26,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:32:26,153 INFO L93 Difference]: Finished difference Result 60 states and 106 transitions. [2020-04-18 15:32:26,153 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 106 transitions. [2020-04-18 15:32:26,153 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:32:26,154 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [720082782] [2020-04-18 15:32:26,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:32:26,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 15:32:26,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [720082782] [2020-04-18 15:32:26,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 15:32:26,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:32:26,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:32:26,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-04-18 15:32:26,155 INFO L87 Difference]: Start difference. First operand 85 states and 173 transitions. Second operand 7 states. [2020-04-18 15:32:26,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:32:26,208 INFO L93 Difference]: Finished difference Result 80 states and 161 transitions. [2020-04-18 15:32:26,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 15:32:26,209 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-04-18 15:32:26,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:32:26,209 INFO L225 Difference]: With dead ends: 80 [2020-04-18 15:32:26,210 INFO L226 Difference]: Without dead ends: 72 [2020-04-18 15:32:26,210 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 4 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-04-18 15:32:26,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-04-18 15:32:26,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-04-18 15:32:26,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-04-18 15:32:26,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 147 transitions. [2020-04-18 15:32:26,215 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 147 transitions. Word has length 13 [2020-04-18 15:32:26,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:32:26,215 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 147 transitions. [2020-04-18 15:32:26,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 15:32:26,215 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 147 transitions. [2020-04-18 15:32:26,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:32:26,216 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:32:26,216 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:32:26,216 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:32:26,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:32:26,217 INFO L82 PathProgramCache]: Analyzing trace with hash 399497030, now seen corresponding path program 1 times [2020-04-18 15:32:26,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:32:26,217 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1236602730] [2020-04-18 15:32:26,218 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:32:26,221 INFO L259 McrAutomatonBuilder]: Finished intersection with 178 states and 482 transitions. [2020-04-18 15:32:26,223 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states. [2020-04-18 15:32:26,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:32:26,225 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:32:26,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:32:26,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1909222784, now seen corresponding path program 2 times [2020-04-18 15:32:26,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:32:26,226 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008412434] [2020-04-18 15:32:26,226 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:32:26,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:32:26,294 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 15:32:26,294 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008412434] [2020-04-18 15:32:26,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:32:26,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:32:26,296 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:32:26,298 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:32:26,302 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 34 transitions. [2020-04-18 15:32:26,302 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:32:26,318 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:32:26,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:32:26,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:32:26,319 INFO L87 Difference]: Start difference. First operand 178 states. Second operand 4 states. [2020-04-18 15:32:26,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:32:26,347 INFO L93 Difference]: Finished difference Result 238 states and 612 transitions. [2020-04-18 15:32:26,347 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 612 transitions. [2020-04-18 15:32:26,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:32:26,349 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:32:26,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:32:26,349 INFO L82 PathProgramCache]: Analyzing trace with hash 1953593056, now seen corresponding path program 3 times [2020-04-18 15:32:26,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:32:26,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904936672] [2020-04-18 15:32:26,350 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:32:26,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:32:26,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:32:26,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904936672] [2020-04-18 15:32:26,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:32:26,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:32:26,411 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:32:26,413 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:32:26,415 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 28 transitions. [2020-04-18 15:32:26,416 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:32:26,448 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 15:32:26,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:32:26,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:32:26,448 INFO L87 Difference]: Start difference. First operand 238 states and 612 transitions. Second operand 6 states. [2020-04-18 15:32:26,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:32:26,522 INFO L93 Difference]: Finished difference Result 256 states and 637 transitions. [2020-04-18 15:32:26,522 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 637 transitions. [2020-04-18 15:32:26,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:32:26,523 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:32:26,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:32:26,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1206368608, now seen corresponding path program 4 times [2020-04-18 15:32:26,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:32:26,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006567310] [2020-04-18 15:32:26,525 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:32:26,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:32:26,551 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 15:32:26,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006567310] [2020-04-18 15:32:26,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:32:26,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:32:26,552 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:32:26,553 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:32:26,556 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 34 transitions. [2020-04-18 15:32:26,556 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:32:26,611 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 15:32:26,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:32:26,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-04-18 15:32:26,612 INFO L87 Difference]: Start difference. First operand 256 states and 637 transitions. Second operand 5 states. [2020-04-18 15:32:26,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:32:26,643 INFO L93 Difference]: Finished difference Result 378 states and 878 transitions. [2020-04-18 15:32:26,644 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 878 transitions. [2020-04-18 15:32:26,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:32:26,645 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 15:32:26,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:32:26,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1263359428, now seen corresponding path program 5 times [2020-04-18 15:32:26,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:32:26,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051395056] [2020-04-18 15:32:26,646 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:32:26,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:32:26,705 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 15:32:26,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051395056] [2020-04-18 15:32:26,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:32:26,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 15:32:26,707 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:32:26,708 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:32:26,712 INFO L259 McrAutomatonBuilder]: Finished intersection with 27 states and 36 transitions. [2020-04-18 15:32:26,712 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:32:26,741 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 15:32:26,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:32:26,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-04-18 15:32:26,742 INFO L87 Difference]: Start difference. First operand 378 states and 878 transitions. Second operand 7 states. [2020-04-18 15:32:26,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:32:26,852 INFO L93 Difference]: Finished difference Result 382 states and 880 transitions. [2020-04-18 15:32:26,853 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 880 transitions. [2020-04-18 15:32:26,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:32:26,854 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 15:32:26,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:32:26,854 INFO L82 PathProgramCache]: Analyzing trace with hash 936627168, now seen corresponding path program 6 times [2020-04-18 15:32:26,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:32:26,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573879670] [2020-04-18 15:32:26,855 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:32:26,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:32:26,887 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 15:32:26,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573879670] [2020-04-18 15:32:26,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:32:26,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:32:26,888 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:32:26,890 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:32:26,892 INFO L259 McrAutomatonBuilder]: Finished intersection with 18 states and 18 transitions. [2020-04-18 15:32:26,892 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:32:26,917 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:32:26,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:32:26,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2020-04-18 15:32:26,918 INFO L87 Difference]: Start difference. First operand 382 states and 880 transitions. Second operand 4 states. [2020-04-18 15:32:26,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:32:26,942 INFO L93 Difference]: Finished difference Result 596 states and 1327 transitions. [2020-04-18 15:32:26,942 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 1327 transitions. [2020-04-18 15:32:26,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:32:26,944 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 15:32:26,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:32:26,944 INFO L82 PathProgramCache]: Analyzing trace with hash 967250296, now seen corresponding path program 7 times [2020-04-18 15:32:26,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:32:26,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043456911] [2020-04-18 15:32:26,945 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:32:26,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:32:26,977 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 15:32:26,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043456911] [2020-04-18 15:32:26,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:32:26,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:32:26,978 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:32:26,979 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:32:26,984 INFO L259 McrAutomatonBuilder]: Finished intersection with 40 states and 64 transitions. [2020-04-18 15:32:26,985 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:32:27,090 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 15:32:27,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:32:27,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2020-04-18 15:32:27,091 INFO L87 Difference]: Start difference. First operand 596 states and 1327 transitions. Second operand 6 states. [2020-04-18 15:32:27,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:32:27,127 INFO L93 Difference]: Finished difference Result 948 states and 1949 transitions. [2020-04-18 15:32:27,127 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1949 transitions. [2020-04-18 15:32:27,130 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:32:27,130 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1236602730] [2020-04-18 15:32:27,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:32:27,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 15:32:27,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1236602730] [2020-04-18 15:32:27,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 15:32:27,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:32:27,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 15:32:27,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2020-04-18 15:32:27,133 INFO L87 Difference]: Start difference. First operand 72 states and 147 transitions. Second operand 16 states. [2020-04-18 15:32:27,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:32:27,857 INFO L93 Difference]: Finished difference Result 109 states and 212 transitions. [2020-04-18 15:32:27,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-04-18 15:32:27,857 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 16 [2020-04-18 15:32:27,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:32:27,858 INFO L225 Difference]: With dead ends: 109 [2020-04-18 15:32:27,858 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 15:32:27,859 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 108 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 675 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=526, Invalid=2024, Unknown=0, NotChecked=0, Total=2550 [2020-04-18 15:32:27,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 15:32:27,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 15:32:27,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 15:32:27,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 15:32:27,860 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-04-18 15:32:27,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:32:27,861 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 15:32:27,861 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 15:32:27,861 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 15:32:27,861 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:32:27,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 03:32:27 BasicIcfg [2020-04-18 15:32:27,865 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 15:32:27,867 INFO L168 Benchmark]: Toolchain (without parser) took 6563.98 ms. Allocated memory was 137.9 MB in the beginning and 288.9 MB in the end (delta: 151.0 MB). Free memory was 101.3 MB in the beginning and 245.0 MB in the end (delta: -143.7 MB). Peak memory consumption was 7.3 MB. Max. memory is 7.1 GB. [2020-04-18 15:32:27,868 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-04-18 15:32:27,869 INFO L168 Benchmark]: CACSL2BoogieTranslator took 738.40 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 99.3 MB in the beginning and 159.8 MB in the end (delta: -60.4 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. [2020-04-18 15:32:27,870 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.92 ms. Allocated memory is still 202.4 MB. Free memory was 159.1 MB in the beginning and 157.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 15:32:27,871 INFO L168 Benchmark]: Boogie Preprocessor took 27.36 ms. Allocated memory is still 202.4 MB. Free memory was 157.1 MB in the beginning and 155.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-18 15:32:27,871 INFO L168 Benchmark]: RCFGBuilder took 431.42 ms. Allocated memory is still 202.4 MB. Free memory was 155.7 MB in the beginning and 133.7 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-04-18 15:32:27,872 INFO L168 Benchmark]: TraceAbstraction took 5290.45 ms. Allocated memory was 202.4 MB in the beginning and 288.9 MB in the end (delta: 86.5 MB). Free memory was 133.7 MB in the beginning and 245.0 MB in the end (delta: -111.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 15:32:27,875 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 738.40 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 99.3 MB in the beginning and 159.8 MB in the end (delta: -60.4 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 49.92 ms. Allocated memory is still 202.4 MB. Free memory was 159.1 MB in the beginning and 157.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.36 ms. Allocated memory is still 202.4 MB. Free memory was 157.1 MB in the beginning and 155.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 431.42 ms. Allocated memory is still 202.4 MB. Free memory was 155.7 MB in the beginning and 133.7 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5290.45 ms. Allocated memory was 202.4 MB in the beginning and 288.9 MB in the end (delta: 86.5 MB). Free memory was 133.7 MB in the beginning and 245.0 MB in the end (delta: -111.3 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 77 ProgramPointsBefore, 30 ProgramPointsAfterwards, 69 TransitionsBefore, 20 TransitionsAfterwards, 1178 CoEnabledTransitionPairs, 6 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 2 ChoiceCompositions, 627 VarBasedMoverChecksPositive, 24 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2037 CheckedPairsTotal, 54 TotalNumberOfCompositions - 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, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.1s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 103 SDtfs, 266 SDslu, 255 SDs, 0 SdLazy, 294 SolverSat, 89 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 267 GetRequests, 188 SyntacticMatches, 9 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 713 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=226occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 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...