/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe003_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 19:15:29,980 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 19:15:29,983 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 19:15:29,997 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 19:15:29,998 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 19:15:30,000 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 19:15:30,002 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 19:15:30,005 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 19:15:30,013 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 19:15:30,014 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 19:15:30,015 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 19:15:30,017 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 19:15:30,018 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 19:15:30,019 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 19:15:30,022 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 19:15:30,023 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 19:15:30,024 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 19:15:30,025 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 19:15:30,029 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 19:15:30,032 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 19:15:30,036 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 19:15:30,037 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 19:15:30,040 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 19:15:30,041 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 19:15:30,044 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 19:15:30,045 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 19:15:30,045 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 19:15:30,047 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 19:15:30,048 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 19:15:30,050 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 19:15:30,051 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 19:15:30,052 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 19:15:30,053 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 19:15:30,054 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 19:15:30,055 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 19:15:30,055 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 19:15:30,056 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 19:15:30,056 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 19:15:30,057 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 19:15:30,057 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 19:15:30,058 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 19:15:30,059 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-McrStrategy.epf [2020-04-18 19:15:30,087 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 19:15:30,088 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 19:15:30,089 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 19:15:30,089 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 19:15:30,089 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 19:15:30,090 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 19:15:30,090 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 19:15:30,090 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 19:15:30,090 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 19:15:30,090 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 19:15:30,090 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 19:15:30,091 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 19:15:30,091 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 19:15:30,093 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 19:15:30,093 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 19:15:30,093 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 19:15:30,093 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 19:15:30,094 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 19:15:30,094 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 19:15:30,094 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 19:15:30,094 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 19:15:30,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 19:15:30,095 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 19:15:30,095 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 19:15:30,095 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 19:15:30,095 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 19:15:30,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 19:15:30,096 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-04-18 19:15:30,096 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 19:15:30,096 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 19:15:30,097 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 19:15:30,380 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 19:15:30,402 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 19:15:30,405 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 19:15:30,407 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 19:15:30,407 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 19:15:30,409 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe003_tso.opt.i [2020-04-18 19:15:30,477 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84918608b/ee1e60bec13d4c06bdd128b49df7f238/FLAGdd6ba8005 [2020-04-18 19:15:31,000 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 19:15:31,001 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe003_tso.opt.i [2020-04-18 19:15:31,023 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84918608b/ee1e60bec13d4c06bdd128b49df7f238/FLAGdd6ba8005 [2020-04-18 19:15:31,314 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84918608b/ee1e60bec13d4c06bdd128b49df7f238 [2020-04-18 19:15:31,323 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 19:15:31,347 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 19:15:31,348 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 19:15:31,348 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 19:15:31,351 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 19:15:31,352 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:15:31" (1/1) ... [2020-04-18 19:15:31,355 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66ad39a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:15:31, skipping insertion in model container [2020-04-18 19:15:31,355 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:15:31" (1/1) ... [2020-04-18 19:15:31,363 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 19:15:31,424 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 19:15:31,915 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 19:15:31,927 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 19:15:31,998 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 19:15:32,096 INFO L208 MainTranslator]: Completed translation [2020-04-18 19:15:32,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:15:32 WrapperNode [2020-04-18 19:15:32,096 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 19:15:32,097 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 19:15:32,098 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 19:15:32,098 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 19:15:32,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:15:32" (1/1) ... [2020-04-18 19:15:32,125 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:15:32" (1/1) ... [2020-04-18 19:15:32,150 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 19:15:32,150 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 19:15:32,150 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 19:15:32,150 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 19:15:32,159 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:15:32" (1/1) ... [2020-04-18 19:15:32,159 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:15:32" (1/1) ... [2020-04-18 19:15:32,163 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:15:32" (1/1) ... [2020-04-18 19:15:32,163 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:15:32" (1/1) ... [2020-04-18 19:15:32,170 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:15:32" (1/1) ... [2020-04-18 19:15:32,173 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:15:32" (1/1) ... [2020-04-18 19:15:32,175 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:15:32" (1/1) ... [2020-04-18 19:15:32,180 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 19:15:32,181 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 19:15:32,181 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 19:15:32,181 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 19:15:32,182 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:15:32" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 19:15:32,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 19:15:32,241 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 19:15:32,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 19:15:32,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 19:15:32,241 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 19:15:32,242 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 19:15:32,242 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 19:15:32,242 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 19:15:32,242 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 19:15:32,242 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 19:15:32,242 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 19:15:32,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 19:15:32,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 19:15:32,245 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 19:15:32,677 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 19:15:32,677 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 19:15:32,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:15:32 BoogieIcfgContainer [2020-04-18 19:15:32,685 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 19:15:32,686 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 19:15:32,686 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 19:15:32,690 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 19:15:32,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 07:15:31" (1/3) ... [2020-04-18 19:15:32,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ef2805c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:15:32, skipping insertion in model container [2020-04-18 19:15:32,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:15:32" (2/3) ... [2020-04-18 19:15:32,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ef2805c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:15:32, skipping insertion in model container [2020-04-18 19:15:32,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:15:32" (3/3) ... [2020-04-18 19:15:32,694 INFO L109 eAbstractionObserver]: Analyzing ICFG safe003_tso.opt.i [2020-04-18 19:15:32,705 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 19:15:32,706 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 19:15:32,712 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 19:15:32,713 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 19:15:32,739 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:15:32,739 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:15:32,740 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:15:32,740 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:15:32,741 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:15:32,741 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:15:32,741 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:15:32,742 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:15:32,742 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:15:32,742 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:15:32,742 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:15:32,743 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:15:32,743 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:15:32,743 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:15:32,744 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:15:32,744 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:15:32,744 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:15:32,745 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:15:32,749 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:15:32,749 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:15:32,749 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:15:32,750 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:15:32,756 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:15:32,756 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:15:32,757 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:15:32,757 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:15:32,761 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:15:32,762 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:15:32,762 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:15:32,762 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:15:32,785 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 19:15:32,808 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 19:15:32,808 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 19:15:32,808 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 19:15:32,808 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 19:15:32,809 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 19:15:32,809 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 19:15:32,809 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 19:15:32,809 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 19:15:32,822 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 19:15:33,305 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 8472 states. [2020-04-18 19:15:33,308 INFO L276 IsEmpty]: Start isEmpty. Operand 8472 states. [2020-04-18 19:15:33,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-04-18 19:15:33,349 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:15:33,350 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:15:33,350 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:15:33,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:15:33,357 INFO L82 PathProgramCache]: Analyzing trace with hash -927851968, now seen corresponding path program 1 times [2020-04-18 19:15:33,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:15:33,365 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1797322051] [2020-04-18 19:15:33,382 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:15:33,399 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 36 transitions. [2020-04-18 19:15:33,401 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-04-18 19:15:33,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-04-18 19:15:33,402 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:15:33,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:15:33,403 INFO L82 PathProgramCache]: Analyzing trace with hash -927851968, now seen corresponding path program 2 times [2020-04-18 19:15:33,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:15:33,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49877199] [2020-04-18 19:15:33,407 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:15:33,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:15:33,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:15:33,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49877199] [2020-04-18 19:15:33,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:15:33,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:15:33,892 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:15:33,896 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:15:33,906 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 36 transitions. [2020-04-18 19:15:33,906 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:15:33,971 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:15:33,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:15:33,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 19:15:33,978 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 6 states. [2020-04-18 19:15:34,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:15:34,117 INFO L93 Difference]: Finished difference Result 37 states and 36 transitions. [2020-04-18 19:15:34,117 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 36 transitions. [2020-04-18 19:15:34,118 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:15:34,119 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1797322051] [2020-04-18 19:15:34,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:15:34,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 19:15:34,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1797322051] [2020-04-18 19:15:34,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 19:15:34,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:15:34,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:15:34,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-04-18 19:15:34,128 INFO L87 Difference]: Start difference. First operand 8472 states. Second operand 6 states. [2020-04-18 19:15:34,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:15:34,667 INFO L93 Difference]: Finished difference Result 21456 states and 74348 transitions. [2020-04-18 19:15:34,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 19:15:34,669 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-04-18 19:15:34,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:15:34,759 INFO L225 Difference]: With dead ends: 21456 [2020-04-18 19:15:34,760 INFO L226 Difference]: Without dead ends: 6301 [2020-04-18 19:15:34,764 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-04-18 19:15:34,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6301 states. [2020-04-18 19:15:35,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6301 to 4951. [2020-04-18 19:15:35,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4951 states. [2020-04-18 19:15:35,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4951 states to 4951 states and 16329 transitions. [2020-04-18 19:15:35,231 INFO L78 Accepts]: Start accepts. Automaton has 4951 states and 16329 transitions. Word has length 36 [2020-04-18 19:15:35,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:15:35,234 INFO L479 AbstractCegarLoop]: Abstraction has 4951 states and 16329 transitions. [2020-04-18 19:15:35,238 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 19:15:35,239 INFO L276 IsEmpty]: Start isEmpty. Operand 4951 states and 16329 transitions. [2020-04-18 19:15:35,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 19:15:35,253 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:15:35,261 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:15:35,262 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:15:35,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:15:35,262 INFO L82 PathProgramCache]: Analyzing trace with hash 57831617, now seen corresponding path program 1 times [2020-04-18 19:15:35,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:15:35,263 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1979103663] [2020-04-18 19:15:35,265 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:15:35,269 INFO L259 McrAutomatonBuilder]: Finished intersection with 79 states and 118 transitions. [2020-04-18 19:15:35,272 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states. [2020-04-18 19:15:35,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 19:15:35,275 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:15:35,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:15:35,276 INFO L82 PathProgramCache]: Analyzing trace with hash 57831617, now seen corresponding path program 2 times [2020-04-18 19:15:35,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:15:35,277 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645981304] [2020-04-18 19:15:35,277 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:15:35,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:15:35,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:15:35,535 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645981304] [2020-04-18 19:15:35,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:15:35,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:15:35,536 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:15:35,540 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:15:35,549 INFO L259 McrAutomatonBuilder]: Finished intersection with 67 states and 94 transitions. [2020-04-18 19:15:35,549 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:15:35,606 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:15:35,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:15:35,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:15:35,607 INFO L87 Difference]: Start difference. First operand 79 states. Second operand 7 states. [2020-04-18 19:15:35,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:15:35,682 INFO L93 Difference]: Finished difference Result 79 states and 118 transitions. [2020-04-18 19:15:35,682 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 118 transitions. [2020-04-18 19:15:35,683 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:15:35,684 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1979103663] [2020-04-18 19:15:35,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:15:35,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:15:35,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1979103663] [2020-04-18 19:15:35,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 19:15:35,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:15:35,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:15:35,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-04-18 19:15:35,687 INFO L87 Difference]: Start difference. First operand 4951 states and 16329 transitions. Second operand 7 states. [2020-04-18 19:15:35,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:15:35,979 INFO L93 Difference]: Finished difference Result 6661 states and 21852 transitions. [2020-04-18 19:15:35,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 19:15:35,980 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-04-18 19:15:35,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:15:36,021 INFO L225 Difference]: With dead ends: 6661 [2020-04-18 19:15:36,022 INFO L226 Difference]: Without dead ends: 5581 [2020-04-18 19:15:36,037 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-04-18 19:15:36,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5581 states. [2020-04-18 19:15:36,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5581 to 4181. [2020-04-18 19:15:36,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4181 states. [2020-04-18 19:15:36,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4181 states to 4181 states and 13583 transitions. [2020-04-18 19:15:36,326 INFO L78 Accepts]: Start accepts. Automaton has 4181 states and 13583 transitions. Word has length 38 [2020-04-18 19:15:36,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:15:36,326 INFO L479 AbstractCegarLoop]: Abstraction has 4181 states and 13583 transitions. [2020-04-18 19:15:36,327 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 19:15:36,327 INFO L276 IsEmpty]: Start isEmpty. Operand 4181 states and 13583 transitions. [2020-04-18 19:15:36,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 19:15:36,334 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:15:36,335 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:15:36,335 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:15:36,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:15:36,335 INFO L82 PathProgramCache]: Analyzing trace with hash 628816319, now seen corresponding path program 1 times [2020-04-18 19:15:36,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:15:36,336 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [867012087] [2020-04-18 19:15:36,337 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:15:36,340 INFO L259 McrAutomatonBuilder]: Finished intersection with 71 states and 102 transitions. [2020-04-18 19:15:36,341 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states. [2020-04-18 19:15:36,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 19:15:36,341 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:15:36,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:15:36,342 INFO L82 PathProgramCache]: Analyzing trace with hash 628816319, now seen corresponding path program 2 times [2020-04-18 19:15:36,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:15:36,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715104630] [2020-04-18 19:15:36,342 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:15:36,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:15:36,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:15:36,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715104630] [2020-04-18 19:15:36,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:15:36,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:15:36,501 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:15:36,504 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:15:36,514 INFO L259 McrAutomatonBuilder]: Finished intersection with 59 states and 78 transitions. [2020-04-18 19:15:36,514 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:15:36,643 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 19:15:36,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:15:36,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-04-18 19:15:36,644 INFO L87 Difference]: Start difference. First operand 71 states. Second operand 8 states. [2020-04-18 19:15:36,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:15:36,789 INFO L93 Difference]: Finished difference Result 71 states and 102 transitions. [2020-04-18 19:15:36,789 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 102 transitions. [2020-04-18 19:15:36,789 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:15:36,790 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [867012087] [2020-04-18 19:15:36,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:15:36,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:15:36,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [867012087] [2020-04-18 19:15:36,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 19:15:36,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:15:36,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:15:36,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-04-18 19:15:36,791 INFO L87 Difference]: Start difference. First operand 4181 states and 13583 transitions. Second operand 8 states. [2020-04-18 19:15:37,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:15:37,151 INFO L93 Difference]: Finished difference Result 7046 states and 22625 transitions. [2020-04-18 19:15:37,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-04-18 19:15:37,152 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2020-04-18 19:15:37,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:15:37,210 INFO L225 Difference]: With dead ends: 7046 [2020-04-18 19:15:37,210 INFO L226 Difference]: Without dead ends: 5101 [2020-04-18 19:15:37,211 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=116, Invalid=264, Unknown=0, NotChecked=0, Total=380 [2020-04-18 19:15:37,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5101 states. [2020-04-18 19:15:37,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5101 to 3691. [2020-04-18 19:15:37,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3691 states. [2020-04-18 19:15:37,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3691 states to 3691 states and 11794 transitions. [2020-04-18 19:15:37,769 INFO L78 Accepts]: Start accepts. Automaton has 3691 states and 11794 transitions. Word has length 38 [2020-04-18 19:15:37,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:15:37,769 INFO L479 AbstractCegarLoop]: Abstraction has 3691 states and 11794 transitions. [2020-04-18 19:15:37,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 19:15:37,770 INFO L276 IsEmpty]: Start isEmpty. Operand 3691 states and 11794 transitions. [2020-04-18 19:15:37,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-04-18 19:15:37,777 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:15:37,778 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:15:37,778 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:15:37,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:15:37,779 INFO L82 PathProgramCache]: Analyzing trace with hash 795573810, now seen corresponding path program 1 times [2020-04-18 19:15:37,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:15:37,779 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [827890955] [2020-04-18 19:15:37,780 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:15:37,784 INFO L259 McrAutomatonBuilder]: Finished intersection with 181 states and 384 transitions. [2020-04-18 19:15:37,785 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states. [2020-04-18 19:15:37,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-04-18 19:15:37,786 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:15:37,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:15:37,786 INFO L82 PathProgramCache]: Analyzing trace with hash -1317030912, now seen corresponding path program 2 times [2020-04-18 19:15:37,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:15:37,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619193981] [2020-04-18 19:15:37,787 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:15:37,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:15:37,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:15:37,907 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619193981] [2020-04-18 19:15:37,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:15:37,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:15:37,908 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:15:37,912 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:15:37,926 INFO L259 McrAutomatonBuilder]: Finished intersection with 133 states and 264 transitions. [2020-04-18 19:15:37,926 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:15:38,073 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 11 times. [2020-04-18 19:15:38,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 19:15:38,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-04-18 19:15:38,074 INFO L87 Difference]: Start difference. First operand 181 states. Second operand 10 states. [2020-04-18 19:15:38,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:15:38,182 INFO L93 Difference]: Finished difference Result 181 states and 384 transitions. [2020-04-18 19:15:38,182 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 384 transitions. [2020-04-18 19:15:38,182 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:15:38,183 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [827890955] [2020-04-18 19:15:38,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:15:38,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:15:38,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [827890955] [2020-04-18 19:15:38,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-04-18 19:15:38,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:15:38,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 19:15:38,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-04-18 19:15:38,185 INFO L87 Difference]: Start difference. First operand 3691 states and 11794 transitions. Second operand 10 states. [2020-04-18 19:15:38,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:15:38,596 INFO L93 Difference]: Finished difference Result 7222 states and 22962 transitions. [2020-04-18 19:15:38,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-04-18 19:15:38,596 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2020-04-18 19:15:38,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:15:38,612 INFO L225 Difference]: With dead ends: 7222 [2020-04-18 19:15:38,612 INFO L226 Difference]: Without dead ends: 4417 [2020-04-18 19:15:38,613 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=176, Invalid=376, Unknown=0, NotChecked=0, Total=552 [2020-04-18 19:15:38,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4417 states. [2020-04-18 19:15:38,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4417 to 3323. [2020-04-18 19:15:38,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3323 states. [2020-04-18 19:15:38,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3323 states to 3323 states and 10550 transitions. [2020-04-18 19:15:38,762 INFO L78 Accepts]: Start accepts. Automaton has 3323 states and 10550 transitions. Word has length 40 [2020-04-18 19:15:38,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:15:38,762 INFO L479 AbstractCegarLoop]: Abstraction has 3323 states and 10550 transitions. [2020-04-18 19:15:38,762 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-04-18 19:15:38,763 INFO L276 IsEmpty]: Start isEmpty. Operand 3323 states and 10550 transitions. [2020-04-18 19:15:38,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 19:15:38,770 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:15:38,770 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:15:38,770 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:15:38,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:15:38,771 INFO L82 PathProgramCache]: Analyzing trace with hash -796962008, now seen corresponding path program 1 times [2020-04-18 19:15:38,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:15:38,771 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [809613178] [2020-04-18 19:15:38,772 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:15:38,777 INFO L259 McrAutomatonBuilder]: Finished intersection with 236 states and 525 transitions. [2020-04-18 19:15:38,779 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states. [2020-04-18 19:15:38,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 19:15:38,780 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:15:38,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:15:38,780 INFO L82 PathProgramCache]: Analyzing trace with hash -796962008, now seen corresponding path program 2 times [2020-04-18 19:15:38,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:15:38,781 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262659210] [2020-04-18 19:15:38,781 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:15:38,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:15:38,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:15:38,907 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262659210] [2020-04-18 19:15:38,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:15:38,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:15:38,907 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:15:38,911 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:15:38,926 INFO L259 McrAutomatonBuilder]: Finished intersection with 137 states and 261 transitions. [2020-04-18 19:15:38,927 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:15:39,009 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 19:15:39,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:15:39,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-04-18 19:15:39,011 INFO L87 Difference]: Start difference. First operand 236 states. Second operand 8 states. [2020-04-18 19:15:39,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:15:39,080 INFO L93 Difference]: Finished difference Result 236 states and 525 transitions. [2020-04-18 19:15:39,080 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 525 transitions. [2020-04-18 19:15:39,082 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:15:39,082 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [809613178] [2020-04-18 19:15:39,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:15:39,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:15:39,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [809613178] [2020-04-18 19:15:39,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 19:15:39,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:15:39,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:15:39,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-04-18 19:15:39,084 INFO L87 Difference]: Start difference. First operand 3323 states and 10550 transitions. Second operand 8 states. [2020-04-18 19:15:39,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:15:39,228 INFO L93 Difference]: Finished difference Result 4353 states and 13756 transitions. [2020-04-18 19:15:39,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-04-18 19:15:39,228 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2020-04-18 19:15:39,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:15:39,239 INFO L225 Difference]: With dead ends: 4353 [2020-04-18 19:15:39,239 INFO L226 Difference]: Without dead ends: 3446 [2020-04-18 19:15:39,240 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2020-04-18 19:15:39,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3446 states. [2020-04-18 19:15:39,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3446 to 2616. [2020-04-18 19:15:39,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2616 states. [2020-04-18 19:15:39,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2616 states to 2616 states and 8293 transitions. [2020-04-18 19:15:39,349 INFO L78 Accepts]: Start accepts. Automaton has 2616 states and 8293 transitions. Word has length 41 [2020-04-18 19:15:39,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:15:39,350 INFO L479 AbstractCegarLoop]: Abstraction has 2616 states and 8293 transitions. [2020-04-18 19:15:39,350 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 19:15:39,350 INFO L276 IsEmpty]: Start isEmpty. Operand 2616 states and 8293 transitions. [2020-04-18 19:15:39,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 19:15:39,356 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:15:39,356 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:15:39,357 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:15:39,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:15:39,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1429253103, now seen corresponding path program 1 times [2020-04-18 19:15:39,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:15:39,358 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1796833856] [2020-04-18 19:15:39,359 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:15:39,372 INFO L259 McrAutomatonBuilder]: Finished intersection with 532 states and 1527 transitions. [2020-04-18 19:15:39,376 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states. [2020-04-18 19:15:39,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 19:15:39,378 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:15:39,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:15:39,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1861919001, now seen corresponding path program 2 times [2020-04-18 19:15:39,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:15:39,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716900384] [2020-04-18 19:15:39,385 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:15:39,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:15:39,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:15:39,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716900384] [2020-04-18 19:15:39,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:15:39,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:15:39,550 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:15:39,554 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:15:39,585 INFO L259 McrAutomatonBuilder]: Finished intersection with 214 states and 499 transitions. [2020-04-18 19:15:39,586 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:15:39,717 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 15 times. [2020-04-18 19:15:39,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 19:15:39,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-04-18 19:15:39,718 INFO L87 Difference]: Start difference. First operand 532 states. Second operand 10 states. [2020-04-18 19:15:40,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:15:40,202 INFO L93 Difference]: Finished difference Result 730 states and 1928 transitions. [2020-04-18 19:15:40,202 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 1928 transitions. [2020-04-18 19:15:40,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 19:15:40,204 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:15:40,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:15:40,205 INFO L82 PathProgramCache]: Analyzing trace with hash 313946459, now seen corresponding path program 3 times [2020-04-18 19:15:40,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:15:40,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083557692] [2020-04-18 19:15:40,205 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:15:40,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:15:40,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:15:40,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083557692] [2020-04-18 19:15:40,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:15:40,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:15:40,369 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:15:40,374 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:15:40,420 INFO L259 McrAutomatonBuilder]: Finished intersection with 243 states and 605 transitions. [2020-04-18 19:15:40,420 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:15:40,779 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 23 times. [2020-04-18 19:15:40,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-04-18 19:15:40,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2020-04-18 19:15:40,780 INFO L87 Difference]: Start difference. First operand 730 states and 1928 transitions. Second operand 18 states. [2020-04-18 19:15:40,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:15:40,990 INFO L93 Difference]: Finished difference Result 730 states and 1928 transitions. [2020-04-18 19:15:40,990 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 1928 transitions. [2020-04-18 19:15:40,992 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:15:40,992 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1796833856] [2020-04-18 19:15:40,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:15:40,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 19:15:40,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1796833856] [2020-04-18 19:15:40,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-04-18 19:15:40,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:15:40,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-04-18 19:15:40,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=438, Invalid=1044, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 19:15:40,994 INFO L87 Difference]: Start difference. First operand 2616 states and 8293 transitions. Second operand 21 states. [2020-04-18 19:15:41,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:15:41,606 INFO L93 Difference]: Finished difference Result 3976 states and 12357 transitions. [2020-04-18 19:15:41,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-04-18 19:15:41,606 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 43 [2020-04-18 19:15:41,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:15:41,610 INFO L225 Difference]: With dead ends: 3976 [2020-04-18 19:15:41,610 INFO L226 Difference]: Without dead ends: 1162 [2020-04-18 19:15:41,612 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 666 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=678, Invalid=1674, Unknown=0, NotChecked=0, Total=2352 [2020-04-18 19:15:41,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2020-04-18 19:15:41,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 1162. [2020-04-18 19:15:41,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1162 states. [2020-04-18 19:15:41,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1162 states to 1162 states and 3527 transitions. [2020-04-18 19:15:41,641 INFO L78 Accepts]: Start accepts. Automaton has 1162 states and 3527 transitions. Word has length 43 [2020-04-18 19:15:41,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:15:41,641 INFO L479 AbstractCegarLoop]: Abstraction has 1162 states and 3527 transitions. [2020-04-18 19:15:41,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-04-18 19:15:41,642 INFO L276 IsEmpty]: Start isEmpty. Operand 1162 states and 3527 transitions. [2020-04-18 19:15:41,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:15:41,644 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:15:41,644 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:15:41,644 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:15:41,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:15:41,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1256862559, now seen corresponding path program 1 times [2020-04-18 19:15:41,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:15:41,645 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [363932468] [2020-04-18 19:15:41,647 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:15:41,661 INFO L259 McrAutomatonBuilder]: Finished intersection with 704 states and 2088 transitions. [2020-04-18 19:15:41,666 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states. [2020-04-18 19:15:41,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:15:41,669 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:15:41,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:15:41,669 INFO L82 PathProgramCache]: Analyzing trace with hash -436236609, now seen corresponding path program 2 times [2020-04-18 19:15:41,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:15:41,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593397145] [2020-04-18 19:15:41,670 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:15:41,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:15:41,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:15:41,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593397145] [2020-04-18 19:15:41,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:15:41,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:15:41,819 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:15:41,822 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:15:41,844 INFO L259 McrAutomatonBuilder]: Finished intersection with 218 states and 489 transitions. [2020-04-18 19:15:41,845 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:15:41,926 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 7 times. [2020-04-18 19:15:41,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:15:41,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-04-18 19:15:41,927 INFO L87 Difference]: Start difference. First operand 704 states. Second operand 8 states. [2020-04-18 19:15:42,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:15:42,176 INFO L93 Difference]: Finished difference Result 840 states and 2369 transitions. [2020-04-18 19:15:42,176 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 2369 transitions. [2020-04-18 19:15:42,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:15:42,179 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:15:42,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:15:42,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1643370671, now seen corresponding path program 3 times [2020-04-18 19:15:42,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:15:42,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497652112] [2020-04-18 19:15:42,180 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:15:42,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:15:42,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:15:42,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497652112] [2020-04-18 19:15:42,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:15:42,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:15:42,336 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:15:42,340 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:15:42,387 INFO L259 McrAutomatonBuilder]: Finished intersection with 270 states and 655 transitions. [2020-04-18 19:15:42,387 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:15:42,622 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 21 times. [2020-04-18 19:15:42,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 19:15:42,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=500, Unknown=0, NotChecked=0, Total=650 [2020-04-18 19:15:42,623 INFO L87 Difference]: Start difference. First operand 840 states and 2369 transitions. Second operand 16 states. [2020-04-18 19:15:43,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:15:43,614 INFO L93 Difference]: Finished difference Result 1324 states and 3598 transitions. [2020-04-18 19:15:43,615 INFO L276 IsEmpty]: Start isEmpty. Operand 1324 states and 3598 transitions. [2020-04-18 19:15:43,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:15:43,619 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:15:43,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:15:43,619 INFO L82 PathProgramCache]: Analyzing trace with hash -845482807, now seen corresponding path program 4 times [2020-04-18 19:15:43,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:15:43,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996863489] [2020-04-18 19:15:43,620 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:15:43,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:15:43,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:15:43,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996863489] [2020-04-18 19:15:43,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:15:43,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:15:43,737 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:15:43,740 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:15:43,789 INFO L259 McrAutomatonBuilder]: Finished intersection with 256 states and 630 transitions. [2020-04-18 19:15:43,789 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:15:44,053 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 29 times. [2020-04-18 19:15:44,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-04-18 19:15:44,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=415, Invalid=1655, Unknown=0, NotChecked=0, Total=2070 [2020-04-18 19:15:44,055 INFO L87 Difference]: Start difference. First operand 1324 states and 3598 transitions. Second operand 18 states. [2020-04-18 19:15:45,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:15:45,127 INFO L93 Difference]: Finished difference Result 1700 states and 4204 transitions. [2020-04-18 19:15:45,128 INFO L276 IsEmpty]: Start isEmpty. Operand 1700 states and 4204 transitions. [2020-04-18 19:15:45,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:15:45,132 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 19:15:45,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:15:45,133 INFO L82 PathProgramCache]: Analyzing trace with hash -87873135, now seen corresponding path program 5 times [2020-04-18 19:15:45,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:15:45,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992666265] [2020-04-18 19:15:45,133 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:15:45,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:15:45,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:15:45,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992666265] [2020-04-18 19:15:45,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:15:45,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:15:45,236 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:15:45,239 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:15:45,260 INFO L259 McrAutomatonBuilder]: Finished intersection with 193 states and 437 transitions. [2020-04-18 19:15:45,261 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:15:45,411 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 16 times. [2020-04-18 19:15:45,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 19:15:45,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=858, Invalid=3698, Unknown=0, NotChecked=0, Total=4556 [2020-04-18 19:15:45,413 INFO L87 Difference]: Start difference. First operand 1700 states and 4204 transitions. Second operand 16 states. [2020-04-18 19:15:45,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:15:45,744 INFO L93 Difference]: Finished difference Result 1759 states and 4281 transitions. [2020-04-18 19:15:45,745 INFO L276 IsEmpty]: Start isEmpty. Operand 1759 states and 4281 transitions. [2020-04-18 19:15:45,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:15:45,749 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 19:15:45,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:15:45,749 INFO L82 PathProgramCache]: Analyzing trace with hash 444730891, now seen corresponding path program 6 times [2020-04-18 19:15:45,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:15:45,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366277894] [2020-04-18 19:15:45,750 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:15:45,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:15:45,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:15:45,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366277894] [2020-04-18 19:15:45,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:15:45,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:15:45,923 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:15:45,925 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:15:45,949 INFO L259 McrAutomatonBuilder]: Finished intersection with 200 states and 457 transitions. [2020-04-18 19:15:45,949 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:15:46,291 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 29 times. [2020-04-18 19:15:46,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-04-18 19:15:46,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1102, Invalid=5540, Unknown=0, NotChecked=0, Total=6642 [2020-04-18 19:15:46,293 INFO L87 Difference]: Start difference. First operand 1759 states and 4281 transitions. Second operand 20 states. [2020-04-18 19:15:47,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:15:47,188 INFO L93 Difference]: Finished difference Result 1848 states and 4458 transitions. [2020-04-18 19:15:47,188 INFO L276 IsEmpty]: Start isEmpty. Operand 1848 states and 4458 transitions. [2020-04-18 19:15:47,191 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:15:47,192 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [363932468] [2020-04-18 19:15:47,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:15:47,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 19:15:47,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [363932468] [2020-04-18 19:15:47,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-04-18 19:15:47,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:15:47,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-04-18 19:15:47,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1272, Invalid=6384, Unknown=0, NotChecked=0, Total=7656 [2020-04-18 19:15:47,196 INFO L87 Difference]: Start difference. First operand 1162 states and 3527 transitions. Second operand 40 states. [2020-04-18 19:15:52,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:15:52,698 INFO L93 Difference]: Finished difference Result 2761 states and 8245 transitions. [2020-04-18 19:15:52,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2020-04-18 19:15:52,699 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 44 [2020-04-18 19:15:52,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:15:52,701 INFO L225 Difference]: With dead ends: 2761 [2020-04-18 19:15:52,701 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 19:15:52,712 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 576 GetRequests, 403 SyntacticMatches, 3 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9576 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=5275, Invalid=24137, Unknown=0, NotChecked=0, Total=29412 [2020-04-18 19:15:52,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 19:15:52,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 19:15:52,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 19:15:52,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 19:15:52,713 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 44 [2020-04-18 19:15:52,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:15:52,713 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 19:15:52,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-04-18 19:15:52,713 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 19:15:52,713 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:15:52,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 07:15:52 BasicIcfg [2020-04-18 19:15:52,719 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 19:15:52,723 INFO L168 Benchmark]: Toolchain (without parser) took 21396.48 ms. Allocated memory was 137.9 MB in the beginning and 707.8 MB in the end (delta: 569.9 MB). Free memory was 100.7 MB in the beginning and 448.6 MB in the end (delta: -348.0 MB). Peak memory consumption was 221.9 MB. Max. memory is 7.1 GB. [2020-04-18 19:15:52,723 INFO L168 Benchmark]: CDTParser took 0.21 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 19:15:52,724 INFO L168 Benchmark]: CACSL2BoogieTranslator took 748.94 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 98.8 MB in the beginning and 158.7 MB in the end (delta: -59.9 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. [2020-04-18 19:15:52,735 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.54 ms. Allocated memory is still 201.9 MB. Free memory was 158.0 MB in the beginning and 156.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 19:15:52,736 INFO L168 Benchmark]: Boogie Preprocessor took 30.37 ms. Allocated memory is still 201.9 MB. Free memory was 156.0 MB in the beginning and 154.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-18 19:15:52,737 INFO L168 Benchmark]: RCFGBuilder took 503.94 ms. Allocated memory is still 201.9 MB. Free memory was 154.6 MB in the beginning and 132.4 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-04-18 19:15:52,741 INFO L168 Benchmark]: TraceAbstraction took 20033.79 ms. Allocated memory was 201.9 MB in the beginning and 707.8 MB in the end (delta: 505.9 MB). Free memory was 132.4 MB in the beginning and 448.6 MB in the end (delta: -316.2 MB). Peak memory consumption was 189.7 MB. Max. memory is 7.1 GB. [2020-04-18 19:15:52,747 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 748.94 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 98.8 MB in the beginning and 158.7 MB in the end (delta: -59.9 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 52.54 ms. Allocated memory is still 201.9 MB. Free memory was 158.0 MB in the beginning and 156.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 30.37 ms. Allocated memory is still 201.9 MB. Free memory was 156.0 MB in the beginning and 154.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 503.94 ms. Allocated memory is still 201.9 MB. Free memory was 154.6 MB in the beginning and 132.4 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 20033.79 ms. Allocated memory was 201.9 MB in the beginning and 707.8 MB in the end (delta: 505.9 MB). Free memory was 132.4 MB in the beginning and 448.6 MB in the end (delta: -316.2 MB). Peak memory consumption was 189.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 19.9s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 8.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.4s, HoareTripleCheckerStatistics: 812 SDtfs, 4229 SDslu, 5187 SDs, 0 SdLazy, 1221 SolverSat, 498 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1003 GetRequests, 709 SyntacticMatches, 3 SemanticMatches, 291 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10439 ImplicationChecksByTransitivity, 9.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8472occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.5s AutomataMinimizationTime, 7 MinimizatonAttempts, 6084 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...