/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe000_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 19:10:42,440 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 19:10:42,443 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 19:10:42,460 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 19:10:42,460 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 19:10:42,461 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 19:10:42,463 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 19:10:42,465 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 19:10:42,466 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 19:10:42,467 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 19:10:42,468 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 19:10:42,469 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 19:10:42,469 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 19:10:42,470 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 19:10:42,471 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 19:10:42,473 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 19:10:42,473 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 19:10:42,474 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 19:10:42,476 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 19:10:42,478 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 19:10:42,479 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 19:10:42,481 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 19:10:42,482 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 19:10:42,483 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 19:10:42,485 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 19:10:42,485 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 19:10:42,486 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 19:10:42,486 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 19:10:42,487 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 19:10:42,488 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 19:10:42,488 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 19:10:42,489 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 19:10:42,490 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 19:10:42,490 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 19:10:42,491 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 19:10:42,492 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 19:10:42,492 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 19:10:42,493 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 19:10:42,493 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 19:10:42,494 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 19:10:42,494 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 19:10:42,495 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-McrStrategy.epf [2020-04-18 19:10:42,516 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 19:10:42,516 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 19:10:42,517 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 19:10:42,517 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 19:10:42,518 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 19:10:42,518 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 19:10:42,518 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 19:10:42,518 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 19:10:42,518 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 19:10:42,519 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 19:10:42,519 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 19:10:42,519 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 19:10:42,519 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 19:10:42,519 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 19:10:42,520 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 19:10:42,520 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 19:10:42,520 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 19:10:42,520 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 19:10:42,520 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 19:10:42,520 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 19:10:42,521 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 19:10:42,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 19:10:42,521 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 19:10:42,521 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 19:10:42,521 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 19:10:42,522 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 19:10:42,522 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 19:10:42,522 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-04-18 19:10:42,522 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 19:10:42,522 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 19:10:42,523 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 19:10:42,819 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 19:10:42,838 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 19:10:42,843 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 19:10:42,844 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 19:10:42,845 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 19:10:42,846 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe000_tso.opt.i [2020-04-18 19:10:42,923 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e302c5f60/d0d3ff6f2fa541c2a4f65904a1beeee6/FLAG02ec19bc7 [2020-04-18 19:10:43,504 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 19:10:43,506 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe000_tso.opt.i [2020-04-18 19:10:43,520 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e302c5f60/d0d3ff6f2fa541c2a4f65904a1beeee6/FLAG02ec19bc7 [2020-04-18 19:10:43,787 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e302c5f60/d0d3ff6f2fa541c2a4f65904a1beeee6 [2020-04-18 19:10:43,798 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 19:10:43,819 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 19:10:43,821 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 19:10:43,821 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 19:10:43,825 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 19:10:43,826 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:10:43" (1/1) ... [2020-04-18 19:10:43,829 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@543987cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:10:43, skipping insertion in model container [2020-04-18 19:10:43,829 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:10:43" (1/1) ... [2020-04-18 19:10:43,837 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 19:10:43,895 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 19:10:44,453 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 19:10:44,470 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 19:10:44,523 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 19:10:44,597 INFO L208 MainTranslator]: Completed translation [2020-04-18 19:10:44,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:10:44 WrapperNode [2020-04-18 19:10:44,598 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 19:10:44,599 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 19:10:44,599 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 19:10:44,599 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 19:10:44,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:10:44" (1/1) ... [2020-04-18 19:10:44,626 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:10:44" (1/1) ... [2020-04-18 19:10:44,648 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 19:10:44,649 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 19:10:44,649 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 19:10:44,649 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 19:10:44,657 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:10:44" (1/1) ... [2020-04-18 19:10:44,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:10:44" (1/1) ... [2020-04-18 19:10:44,660 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:10:44" (1/1) ... [2020-04-18 19:10:44,660 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:10:44" (1/1) ... [2020-04-18 19:10:44,667 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:10:44" (1/1) ... [2020-04-18 19:10:44,670 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:10:44" (1/1) ... [2020-04-18 19:10:44,672 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:10:44" (1/1) ... [2020-04-18 19:10:44,675 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 19:10:44,676 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 19:10:44,676 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 19:10:44,676 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 19:10:44,677 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:10:44" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 19:10:44,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 19:10:44,746 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 19:10:44,746 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 19:10:44,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 19:10:44,746 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 19:10:44,747 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 19:10:44,747 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 19:10:44,747 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 19:10:44,747 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 19:10:44,747 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 19:10:44,748 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 19:10:44,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 19:10:44,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 19:10:44,750 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 19:10:45,134 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 19:10:45,134 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 19:10:45,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:10:45 BoogieIcfgContainer [2020-04-18 19:10:45,138 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 19:10:45,140 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 19:10:45,140 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 19:10:45,145 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 19:10:45,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 07:10:43" (1/3) ... [2020-04-18 19:10:45,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c6ab807 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:10:45, skipping insertion in model container [2020-04-18 19:10:45,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:10:44" (2/3) ... [2020-04-18 19:10:45,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c6ab807 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:10:45, skipping insertion in model container [2020-04-18 19:10:45,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:10:45" (3/3) ... [2020-04-18 19:10:45,149 INFO L109 eAbstractionObserver]: Analyzing ICFG safe000_tso.opt.i [2020-04-18 19:10:45,160 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 19:10:45,160 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 19:10:45,168 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 19:10:45,169 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 19:10:45,196 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:45,197 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:45,197 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:45,199 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:45,199 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:45,200 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:45,201 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:45,202 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:45,202 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:45,202 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:45,203 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:45,203 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:45,204 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:45,204 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:45,204 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:45,205 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:45,206 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:45,206 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:45,210 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:45,211 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:45,211 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:45,211 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:45,217 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:45,218 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:45,218 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:45,218 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:45,220 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:45,221 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:45,221 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:45,221 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:45,238 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 19:10:45,259 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 19:10:45,259 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 19:10:45,260 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 19:10:45,260 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 19:10:45,260 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 19:10:45,260 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 19:10:45,260 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 19:10:45,261 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 19:10:45,275 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 19:10:45,770 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 8472 states. [2020-04-18 19:10:45,774 INFO L276 IsEmpty]: Start isEmpty. Operand 8472 states. [2020-04-18 19:10:45,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-04-18 19:10:45,818 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:10:45,820 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:10:45,820 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:10:45,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:10:45,828 INFO L82 PathProgramCache]: Analyzing trace with hash -927851968, now seen corresponding path program 1 times [2020-04-18 19:10:45,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:10:45,837 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1972867322] [2020-04-18 19:10:45,857 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:10:45,876 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 36 transitions. [2020-04-18 19:10:45,879 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-04-18 19:10:45,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-04-18 19:10:45,880 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:10:45,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:10:45,881 INFO L82 PathProgramCache]: Analyzing trace with hash -927851968, now seen corresponding path program 2 times [2020-04-18 19:10:45,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:10:45,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534886531] [2020-04-18 19:10:45,886 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:10:46,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:10:46,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:10:46,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534886531] [2020-04-18 19:10:46,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:10:46,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:10:46,414 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:10:46,417 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:10:46,425 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 36 transitions. [2020-04-18 19:10:46,425 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:10:46,478 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:10:46,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:10:46,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 19:10:46,485 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 6 states. [2020-04-18 19:10:46,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:10:46,599 INFO L93 Difference]: Finished difference Result 37 states and 36 transitions. [2020-04-18 19:10:46,599 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 36 transitions. [2020-04-18 19:10:46,600 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:10:46,600 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1972867322] [2020-04-18 19:10:46,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:10:46,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 19:10:46,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1972867322] [2020-04-18 19:10:46,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 19:10:46,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:10:46,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:10:46,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-04-18 19:10:46,609 INFO L87 Difference]: Start difference. First operand 8472 states. Second operand 6 states. [2020-04-18 19:10:47,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:10:47,111 INFO L93 Difference]: Finished difference Result 20344 states and 70386 transitions. [2020-04-18 19:10:47,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 19:10:47,113 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-04-18 19:10:47,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:10:47,203 INFO L225 Difference]: With dead ends: 20344 [2020-04-18 19:10:47,204 INFO L226 Difference]: Without dead ends: 6604 [2020-04-18 19:10:47,207 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-04-18 19:10:47,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6604 states. [2020-04-18 19:10:47,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6604 to 5470. [2020-04-18 19:10:47,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5470 states. [2020-04-18 19:10:47,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5470 states to 5470 states and 18555 transitions. [2020-04-18 19:10:47,694 INFO L78 Accepts]: Start accepts. Automaton has 5470 states and 18555 transitions. Word has length 36 [2020-04-18 19:10:47,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:10:47,697 INFO L479 AbstractCegarLoop]: Abstraction has 5470 states and 18555 transitions. [2020-04-18 19:10:47,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 19:10:47,701 INFO L276 IsEmpty]: Start isEmpty. Operand 5470 states and 18555 transitions. [2020-04-18 19:10:47,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 19:10:47,714 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:10:47,722 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:10:47,722 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:10:47,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:10:47,723 INFO L82 PathProgramCache]: Analyzing trace with hash 57831617, now seen corresponding path program 1 times [2020-04-18 19:10:47,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:10:47,723 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [302412986] [2020-04-18 19:10:47,725 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:10:47,727 INFO L259 McrAutomatonBuilder]: Finished intersection with 79 states and 118 transitions. [2020-04-18 19:10:47,730 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states. [2020-04-18 19:10:47,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 19:10:47,732 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:10:47,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:10:47,733 INFO L82 PathProgramCache]: Analyzing trace with hash 57831617, now seen corresponding path program 2 times [2020-04-18 19:10:47,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:10:47,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986672937] [2020-04-18 19:10:47,734 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:10:47,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:10:47,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:10:47,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986672937] [2020-04-18 19:10:47,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:10:47,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:10:47,994 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:10:47,998 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:10:48,004 INFO L259 McrAutomatonBuilder]: Finished intersection with 67 states and 94 transitions. [2020-04-18 19:10:48,005 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:10:48,058 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:10:48,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:10:48,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:10:48,059 INFO L87 Difference]: Start difference. First operand 79 states. Second operand 7 states. [2020-04-18 19:10:48,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:10:48,146 INFO L93 Difference]: Finished difference Result 79 states and 118 transitions. [2020-04-18 19:10:48,149 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 118 transitions. [2020-04-18 19:10:48,150 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:10:48,150 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [302412986] [2020-04-18 19:10:48,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:10:48,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:10:48,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [302412986] [2020-04-18 19:10:48,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 19:10:48,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:10:48,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:10:48,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-04-18 19:10:48,154 INFO L87 Difference]: Start difference. First operand 5470 states and 18555 transitions. Second operand 7 states. [2020-04-18 19:10:48,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:10:48,448 INFO L93 Difference]: Finished difference Result 7572 states and 25260 transitions. [2020-04-18 19:10:48,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 19:10:48,449 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-04-18 19:10:48,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:10:48,496 INFO L225 Difference]: With dead ends: 7572 [2020-04-18 19:10:48,497 INFO L226 Difference]: Without dead ends: 6028 [2020-04-18 19:10:48,508 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 19:10:48,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6028 states. [2020-04-18 19:10:48,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6028 to 4884. [2020-04-18 19:10:48,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4884 states. [2020-04-18 19:10:48,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4884 states to 4884 states and 16403 transitions. [2020-04-18 19:10:48,853 INFO L78 Accepts]: Start accepts. Automaton has 4884 states and 16403 transitions. Word has length 38 [2020-04-18 19:10:48,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:10:48,856 INFO L479 AbstractCegarLoop]: Abstraction has 4884 states and 16403 transitions. [2020-04-18 19:10:48,856 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 19:10:48,856 INFO L276 IsEmpty]: Start isEmpty. Operand 4884 states and 16403 transitions. [2020-04-18 19:10:48,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 19:10:48,867 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:10:48,868 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:10:48,868 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:10:48,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:10:48,871 INFO L82 PathProgramCache]: Analyzing trace with hash 628816319, now seen corresponding path program 1 times [2020-04-18 19:10:48,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:10:48,872 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [483063201] [2020-04-18 19:10:48,874 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:10:48,876 INFO L259 McrAutomatonBuilder]: Finished intersection with 71 states and 102 transitions. [2020-04-18 19:10:48,878 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states. [2020-04-18 19:10:48,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 19:10:48,879 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:10:48,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:10:48,879 INFO L82 PathProgramCache]: Analyzing trace with hash 628816319, now seen corresponding path program 2 times [2020-04-18 19:10:48,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:10:48,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545623321] [2020-04-18 19:10:48,880 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:10:48,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:10:49,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:10:49,096 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545623321] [2020-04-18 19:10:49,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:10:49,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:10:49,097 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:10:49,103 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:10:49,110 INFO L259 McrAutomatonBuilder]: Finished intersection with 59 states and 78 transitions. [2020-04-18 19:10:49,111 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:10:49,233 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 19:10:49,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:10:49,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-04-18 19:10:49,233 INFO L87 Difference]: Start difference. First operand 71 states. Second operand 8 states. [2020-04-18 19:10:49,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:10:49,353 INFO L93 Difference]: Finished difference Result 71 states and 102 transitions. [2020-04-18 19:10:49,353 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 102 transitions. [2020-04-18 19:10:49,353 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:10:49,354 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [483063201] [2020-04-18 19:10:49,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:10:49,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:10:49,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [483063201] [2020-04-18 19:10:49,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 19:10:49,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:10:49,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:10:49,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-04-18 19:10:49,356 INFO L87 Difference]: Start difference. First operand 4884 states and 16403 transitions. Second operand 8 states. [2020-04-18 19:10:49,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:10:49,736 INFO L93 Difference]: Finished difference Result 7997 states and 26470 transitions. [2020-04-18 19:10:49,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-04-18 19:10:49,737 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2020-04-18 19:10:49,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:10:49,786 INFO L225 Difference]: With dead ends: 7997 [2020-04-18 19:10:49,786 INFO L226 Difference]: Without dead ends: 6017 [2020-04-18 19:10:49,787 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 19:10:49,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6017 states. [2020-04-18 19:10:50,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6017 to 4836. [2020-04-18 19:10:50,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4836 states. [2020-04-18 19:10:50,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4836 states to 4836 states and 16175 transitions. [2020-04-18 19:10:50,487 INFO L78 Accepts]: Start accepts. Automaton has 4836 states and 16175 transitions. Word has length 38 [2020-04-18 19:10:50,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:10:50,487 INFO L479 AbstractCegarLoop]: Abstraction has 4836 states and 16175 transitions. [2020-04-18 19:10:50,487 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 19:10:50,487 INFO L276 IsEmpty]: Start isEmpty. Operand 4836 states and 16175 transitions. [2020-04-18 19:10:50,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-04-18 19:10:50,499 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:10:50,499 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:10:50,500 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:10:50,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:10:50,500 INFO L82 PathProgramCache]: Analyzing trace with hash 795573810, now seen corresponding path program 1 times [2020-04-18 19:10:50,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:10:50,501 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [678674086] [2020-04-18 19:10:50,502 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:10:50,505 INFO L259 McrAutomatonBuilder]: Finished intersection with 181 states and 384 transitions. [2020-04-18 19:10:50,507 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states. [2020-04-18 19:10:50,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-04-18 19:10:50,508 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:10:50,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:10:50,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1317030912, now seen corresponding path program 2 times [2020-04-18 19:10:50,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:10:50,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654114832] [2020-04-18 19:10:50,509 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:10:50,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:10:50,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:10:50,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654114832] [2020-04-18 19:10:50,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:10:50,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:10:50,646 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:10:50,650 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:10:50,665 INFO L259 McrAutomatonBuilder]: Finished intersection with 133 states and 264 transitions. [2020-04-18 19:10:50,665 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:10:50,784 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 11 times. [2020-04-18 19:10:50,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 19:10:50,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-04-18 19:10:50,785 INFO L87 Difference]: Start difference. First operand 181 states. Second operand 10 states. [2020-04-18 19:10:50,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:10:50,853 INFO L93 Difference]: Finished difference Result 181 states and 384 transitions. [2020-04-18 19:10:50,853 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 384 transitions. [2020-04-18 19:10:50,854 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:10:50,854 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [678674086] [2020-04-18 19:10:50,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:10:50,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:10:50,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [678674086] [2020-04-18 19:10:50,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-04-18 19:10:50,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:10:50,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 19:10:50,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2020-04-18 19:10:50,856 INFO L87 Difference]: Start difference. First operand 4836 states and 16175 transitions. Second operand 10 states. [2020-04-18 19:10:51,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:10:51,089 INFO L93 Difference]: Finished difference Result 6638 states and 21843 transitions. [2020-04-18 19:10:51,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-04-18 19:10:51,089 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2020-04-18 19:10:51,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:10:51,109 INFO L225 Difference]: With dead ends: 6638 [2020-04-18 19:10:51,109 INFO L226 Difference]: Without dead ends: 4834 [2020-04-18 19:10:51,110 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=201, Unknown=0, NotChecked=0, Total=306 [2020-04-18 19:10:51,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4834 states. [2020-04-18 19:10:51,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4834 to 3537. [2020-04-18 19:10:51,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3537 states. [2020-04-18 19:10:51,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3537 states to 3537 states and 11616 transitions. [2020-04-18 19:10:51,236 INFO L78 Accepts]: Start accepts. Automaton has 3537 states and 11616 transitions. Word has length 40 [2020-04-18 19:10:51,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:10:51,237 INFO L479 AbstractCegarLoop]: Abstraction has 3537 states and 11616 transitions. [2020-04-18 19:10:51,237 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-04-18 19:10:51,237 INFO L276 IsEmpty]: Start isEmpty. Operand 3537 states and 11616 transitions. [2020-04-18 19:10:51,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 19:10:51,246 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:10:51,246 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:10:51,246 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:10:51,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:10:51,246 INFO L82 PathProgramCache]: Analyzing trace with hash -393434084, now seen corresponding path program 1 times [2020-04-18 19:10:51,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:10:51,247 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1442192831] [2020-04-18 19:10:51,248 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:10:51,251 INFO L259 McrAutomatonBuilder]: Finished intersection with 188 states and 405 transitions. [2020-04-18 19:10:51,253 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states. [2020-04-18 19:10:51,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 19:10:51,254 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:10:51,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:10:51,254 INFO L82 PathProgramCache]: Analyzing trace with hash 1396861788, now seen corresponding path program 2 times [2020-04-18 19:10:51,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:10:51,255 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215576139] [2020-04-18 19:10:51,255 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:10:51,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:10:51,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:10:51,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215576139] [2020-04-18 19:10:51,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:10:51,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:10:51,449 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:10:51,452 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:10:51,465 INFO L259 McrAutomatonBuilder]: Finished intersection with 98 states and 165 transitions. [2020-04-18 19:10:51,466 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:10:51,542 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 12 times. [2020-04-18 19:10:51,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:10:51,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-04-18 19:10:51,543 INFO L87 Difference]: Start difference. First operand 188 states. Second operand 8 states. [2020-04-18 19:10:51,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:10:51,777 INFO L93 Difference]: Finished difference Result 223 states and 448 transitions. [2020-04-18 19:10:51,777 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 448 transitions. [2020-04-18 19:10:51,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 19:10:51,778 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:10:51,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:10:51,779 INFO L82 PathProgramCache]: Analyzing trace with hash -393434084, now seen corresponding path program 3 times [2020-04-18 19:10:51,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:10:51,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396504559] [2020-04-18 19:10:51,780 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:10:51,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:10:51,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:10:51,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396504559] [2020-04-18 19:10:51,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:10:51,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:10:51,883 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:10:51,885 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:10:51,896 INFO L259 McrAutomatonBuilder]: Finished intersection with 122 states and 237 transitions. [2020-04-18 19:10:51,896 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:10:52,245 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 32 times. [2020-04-18 19:10:52,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-04-18 19:10:52,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=672, Unknown=0, NotChecked=0, Total=870 [2020-04-18 19:10:52,246 INFO L87 Difference]: Start difference. First operand 223 states and 448 transitions. Second operand 21 states. [2020-04-18 19:10:52,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:10:52,481 INFO L93 Difference]: Finished difference Result 223 states and 448 transitions. [2020-04-18 19:10:52,481 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 448 transitions. [2020-04-18 19:10:52,482 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:10:52,483 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1442192831] [2020-04-18 19:10:52,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:10:52,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 19:10:52,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1442192831] [2020-04-18 19:10:52,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-04-18 19:10:52,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:10:52,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-04-18 19:10:52,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=377, Invalid=1029, Unknown=0, NotChecked=0, Total=1406 [2020-04-18 19:10:52,485 INFO L87 Difference]: Start difference. First operand 3537 states and 11616 transitions. Second operand 23 states. [2020-04-18 19:10:52,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:10:52,821 INFO L93 Difference]: Finished difference Result 5161 states and 16970 transitions. [2020-04-18 19:10:52,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-04-18 19:10:52,821 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 41 [2020-04-18 19:10:52,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:10:52,834 INFO L225 Difference]: With dead ends: 5161 [2020-04-18 19:10:52,834 INFO L226 Difference]: Without dead ends: 2830 [2020-04-18 19:10:52,835 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=547, Invalid=1345, Unknown=0, NotChecked=0, Total=1892 [2020-04-18 19:10:52,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2830 states. [2020-04-18 19:10:52,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2830 to 2578. [2020-04-18 19:10:52,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2578 states. [2020-04-18 19:10:52,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2578 states to 2578 states and 8358 transitions. [2020-04-18 19:10:52,910 INFO L78 Accepts]: Start accepts. Automaton has 2578 states and 8358 transitions. Word has length 41 [2020-04-18 19:10:52,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:10:52,910 INFO L479 AbstractCegarLoop]: Abstraction has 2578 states and 8358 transitions. [2020-04-18 19:10:52,911 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-04-18 19:10:52,911 INFO L276 IsEmpty]: Start isEmpty. Operand 2578 states and 8358 transitions. [2020-04-18 19:10:52,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 19:10:52,917 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:10:52,917 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:10:52,917 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:10:52,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:10:52,917 INFO L82 PathProgramCache]: Analyzing trace with hash -296220260, now seen corresponding path program 1 times [2020-04-18 19:10:52,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:10:52,918 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [663661269] [2020-04-18 19:10:52,919 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:10:52,923 INFO L259 McrAutomatonBuilder]: Finished intersection with 244 states and 552 transitions. [2020-04-18 19:10:52,925 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states. [2020-04-18 19:10:52,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 19:10:52,926 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:10:52,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:10:52,926 INFO L82 PathProgramCache]: Analyzing trace with hash 1494075612, now seen corresponding path program 2 times [2020-04-18 19:10:52,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:10:52,927 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308659452] [2020-04-18 19:10:52,927 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:10:52,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:10:53,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:10:53,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308659452] [2020-04-18 19:10:53,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:10:53,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:10:53,115 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:10:53,120 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:10:53,133 INFO L259 McrAutomatonBuilder]: Finished intersection with 116 states and 206 transitions. [2020-04-18 19:10:53,133 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:10:53,198 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 13 times. [2020-04-18 19:10:53,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:10:53,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:10:53,200 INFO L87 Difference]: Start difference. First operand 244 states. Second operand 7 states. [2020-04-18 19:10:53,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:10:53,424 INFO L93 Difference]: Finished difference Result 338 states and 740 transitions. [2020-04-18 19:10:53,424 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 740 transitions. [2020-04-18 19:10:53,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 19:10:53,426 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:10:53,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:10:53,427 INFO L82 PathProgramCache]: Analyzing trace with hash -296220260, now seen corresponding path program 3 times [2020-04-18 19:10:53,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:10:53,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671914697] [2020-04-18 19:10:53,427 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:10:53,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:10:53,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:10:53,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671914697] [2020-04-18 19:10:53,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:10:53,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:10:53,542 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:10:53,547 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:10:53,567 INFO L259 McrAutomatonBuilder]: Finished intersection with 112 states and 198 transitions. [2020-04-18 19:10:53,567 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:10:53,773 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 10 times. [2020-04-18 19:10:53,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 19:10:53,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2020-04-18 19:10:53,774 INFO L87 Difference]: Start difference. First operand 338 states and 740 transitions. Second operand 13 states. [2020-04-18 19:10:53,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:10:53,905 INFO L93 Difference]: Finished difference Result 338 states and 740 transitions. [2020-04-18 19:10:53,905 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 740 transitions. [2020-04-18 19:10:53,906 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:10:53,907 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [663661269] [2020-04-18 19:10:53,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:10:53,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 19:10:53,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [663661269] [2020-04-18 19:10:53,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-04-18 19:10:53,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:10:53,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-18 19:10:53,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=357, Unknown=0, NotChecked=0, Total=506 [2020-04-18 19:10:53,909 INFO L87 Difference]: Start difference. First operand 2578 states and 8358 transitions. Second operand 14 states. [2020-04-18 19:10:54,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:10:54,097 INFO L93 Difference]: Finished difference Result 3658 states and 11752 transitions. [2020-04-18 19:10:54,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-04-18 19:10:54,098 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 42 [2020-04-18 19:10:54,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:10:54,103 INFO L225 Difference]: With dead ends: 3658 [2020-04-18 19:10:54,103 INFO L226 Difference]: Without dead ends: 1600 [2020-04-18 19:10:54,104 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=203, Invalid=447, Unknown=0, NotChecked=0, Total=650 [2020-04-18 19:10:54,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1600 states. [2020-04-18 19:10:54,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1600 to 1600. [2020-04-18 19:10:54,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1600 states. [2020-04-18 19:10:54,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1600 states to 1600 states and 4950 transitions. [2020-04-18 19:10:54,144 INFO L78 Accepts]: Start accepts. Automaton has 1600 states and 4950 transitions. Word has length 42 [2020-04-18 19:10:54,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:10:54,144 INFO L479 AbstractCegarLoop]: Abstraction has 1600 states and 4950 transitions. [2020-04-18 19:10:54,144 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-04-18 19:10:54,144 INFO L276 IsEmpty]: Start isEmpty. Operand 1600 states and 4950 transitions. [2020-04-18 19:10:54,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:10:54,148 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:10:54,148 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:10:54,149 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:10:54,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:10:54,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1666156165, now seen corresponding path program 1 times [2020-04-18 19:10:54,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:10:54,150 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1959919265] [2020-04-18 19:10:54,151 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:10:54,170 INFO L259 McrAutomatonBuilder]: Finished intersection with 928 states and 2844 transitions. [2020-04-18 19:10:54,178 INFO L276 IsEmpty]: Start isEmpty. Operand 928 states. [2020-04-18 19:10:54,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:10:54,182 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:10:54,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:10:54,182 INFO L82 PathProgramCache]: Analyzing trace with hash 1097895237, now seen corresponding path program 2 times [2020-04-18 19:10:54,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:10:54,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434887460] [2020-04-18 19:10:54,183 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:10:54,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:10:54,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:10:54,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434887460] [2020-04-18 19:10:54,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:10:54,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:10:54,274 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:10:54,278 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:10:54,316 INFO L259 McrAutomatonBuilder]: Finished intersection with 236 states and 530 transitions. [2020-04-18 19:10:54,317 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:10:54,379 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 9 times. [2020-04-18 19:10:54,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:10:54,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:10:54,380 INFO L87 Difference]: Start difference. First operand 928 states. Second operand 7 states. [2020-04-18 19:10:54,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:10:54,687 INFO L93 Difference]: Finished difference Result 1554 states and 4613 transitions. [2020-04-18 19:10:54,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 4613 transitions. [2020-04-18 19:10:54,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:10:54,691 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:10:54,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:10:54,692 INFO L82 PathProgramCache]: Analyzing trace with hash 1666156165, now seen corresponding path program 3 times [2020-04-18 19:10:54,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:10:54,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256018065] [2020-04-18 19:10:54,692 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:10:54,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:10:54,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:10:54,777 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256018065] [2020-04-18 19:10:54,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:10:54,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:10:54,777 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:10:54,781 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:10:54,818 INFO L259 McrAutomatonBuilder]: Finished intersection with 232 states and 522 transitions. [2020-04-18 19:10:54,818 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:10:54,842 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:10:54,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:10:54,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-04-18 19:10:54,843 INFO L87 Difference]: Start difference. First operand 1554 states and 4613 transitions. Second operand 7 states. [2020-04-18 19:10:55,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:10:55,082 INFO L93 Difference]: Finished difference Result 1874 states and 5287 transitions. [2020-04-18 19:10:55,082 INFO L276 IsEmpty]: Start isEmpty. Operand 1874 states and 5287 transitions. [2020-04-18 19:10:55,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:10:55,086 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:10:55,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:10:55,086 INFO L82 PathProgramCache]: Analyzing trace with hash 445351109, now seen corresponding path program 4 times [2020-04-18 19:10:55,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:10:55,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052437994] [2020-04-18 19:10:55,087 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:10:55,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:10:55,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:10:55,177 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052437994] [2020-04-18 19:10:55,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:10:55,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:10:55,178 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:10:55,181 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:10:55,225 INFO L259 McrAutomatonBuilder]: Finished intersection with 252 states and 578 transitions. [2020-04-18 19:10:55,225 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:10:55,305 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 20 times. [2020-04-18 19:10:55,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:10:55,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=360, Unknown=0, NotChecked=0, Total=506 [2020-04-18 19:10:55,306 INFO L87 Difference]: Start difference. First operand 1874 states and 5287 transitions. Second operand 9 states. [2020-04-18 19:10:55,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:10:55,612 INFO L93 Difference]: Finished difference Result 1928 states and 5364 transitions. [2020-04-18 19:10:55,612 INFO L276 IsEmpty]: Start isEmpty. Operand 1928 states and 5364 transitions. [2020-04-18 19:10:55,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:10:55,617 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 19:10:55,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:10:55,617 INFO L82 PathProgramCache]: Analyzing trace with hash 1013612037, now seen corresponding path program 5 times [2020-04-18 19:10:55,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:10:55,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222772760] [2020-04-18 19:10:55,618 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:10:55,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:10:55,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:10:55,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222772760] [2020-04-18 19:10:55,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:10:55,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:10:55,725 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:10:55,728 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:10:55,774 INFO L259 McrAutomatonBuilder]: Finished intersection with 258 states and 598 transitions. [2020-04-18 19:10:55,774 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:10:55,974 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 27 times. [2020-04-18 19:10:55,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-18 19:10:55,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=722, Unknown=0, NotChecked=0, Total=992 [2020-04-18 19:10:55,976 INFO L87 Difference]: Start difference. First operand 1928 states and 5364 transitions. Second operand 14 states. [2020-04-18 19:10:56,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:10:56,706 INFO L93 Difference]: Finished difference Result 1978 states and 5437 transitions. [2020-04-18 19:10:56,706 INFO L276 IsEmpty]: Start isEmpty. Operand 1978 states and 5437 transitions. [2020-04-18 19:10:56,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:10:56,709 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 19:10:56,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:10:56,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1590955707, now seen corresponding path program 6 times [2020-04-18 19:10:56,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:10:56,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296235269] [2020-04-18 19:10:56,710 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:10:56,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:10:56,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:10:56,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296235269] [2020-04-18 19:10:56,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:10:56,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:10:56,843 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:10:56,847 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:10:56,879 INFO L259 McrAutomatonBuilder]: Finished intersection with 222 states and 502 transitions. [2020-04-18 19:10:56,880 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:10:56,960 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 16 times. [2020-04-18 19:10:56,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 19:10:56,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=413, Invalid=1309, Unknown=0, NotChecked=0, Total=1722 [2020-04-18 19:10:56,962 INFO L87 Difference]: Start difference. First operand 1978 states and 5437 transitions. Second operand 13 states. [2020-04-18 19:10:57,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:10:57,394 INFO L93 Difference]: Finished difference Result 2250 states and 5978 transitions. [2020-04-18 19:10:57,394 INFO L276 IsEmpty]: Start isEmpty. Operand 2250 states and 5978 transitions. [2020-04-18 19:10:57,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:10:57,397 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 19:10:57,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:10:57,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1858029571, now seen corresponding path program 7 times [2020-04-18 19:10:57,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:10:57,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042325802] [2020-04-18 19:10:57,398 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:10:57,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:10:57,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:10:57,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042325802] [2020-04-18 19:10:57,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:10:57,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:10:57,507 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:10:57,510 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:10:57,543 INFO L259 McrAutomatonBuilder]: Finished intersection with 199 states and 448 transitions. [2020-04-18 19:10:57,543 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:10:57,729 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 20 times. [2020-04-18 19:10:57,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 19:10:57,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=556, Invalid=2306, Unknown=0, NotChecked=0, Total=2862 [2020-04-18 19:10:57,730 INFO L87 Difference]: Start difference. First operand 2250 states and 5978 transitions. Second operand 16 states. [2020-04-18 19:10:58,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:10:58,275 INFO L93 Difference]: Finished difference Result 2592 states and 6613 transitions. [2020-04-18 19:10:58,275 INFO L276 IsEmpty]: Start isEmpty. Operand 2592 states and 6613 transitions. [2020-04-18 19:10:58,279 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:10:58,280 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1959919265] [2020-04-18 19:10:58,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:10:58,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 19:10:58,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1959919265] [2020-04-18 19:10:58,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-04-18 19:10:58,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:10:58,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-04-18 19:10:58,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=713, Invalid=3069, Unknown=0, NotChecked=0, Total=3782 [2020-04-18 19:10:58,283 INFO L87 Difference]: Start difference. First operand 1600 states and 4950 transitions. Second operand 25 states. [2020-04-18 19:10:58,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:10:58,561 INFO L93 Difference]: Finished difference Result 1472 states and 4534 transitions. [2020-04-18 19:10:58,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-04-18 19:10:58,562 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 45 [2020-04-18 19:10:58,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:10:58,563 INFO L225 Difference]: With dead ends: 1472 [2020-04-18 19:10:58,563 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 19:10:58,565 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 388 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1642 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=880, Invalid=4090, Unknown=0, NotChecked=0, Total=4970 [2020-04-18 19:10:58,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 19:10:58,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 19:10:58,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 19:10:58,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 19:10:58,566 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 45 [2020-04-18 19:10:58,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:10:58,566 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 19:10:58,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-04-18 19:10:58,566 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 19:10:58,566 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:10:58,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 07:10:58 BasicIcfg [2020-04-18 19:10:58,571 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 19:10:58,573 INFO L168 Benchmark]: Toolchain (without parser) took 14773.51 ms. Allocated memory was 142.6 MB in the beginning and 619.2 MB in the end (delta: 476.6 MB). Free memory was 99.1 MB in the beginning and 181.3 MB in the end (delta: -82.2 MB). Peak memory consumption was 394.4 MB. Max. memory is 7.1 GB. [2020-04-18 19:10:58,574 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 142.6 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-04-18 19:10:58,575 INFO L168 Benchmark]: CACSL2BoogieTranslator took 777.89 ms. Allocated memory was 142.6 MB in the beginning and 200.8 MB in the end (delta: 58.2 MB). Free memory was 97.1 MB in the beginning and 157.4 MB in the end (delta: -60.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. [2020-04-18 19:10:58,575 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.40 ms. Allocated memory is still 200.8 MB. Free memory was 157.4 MB in the beginning and 155.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2020-04-18 19:10:58,576 INFO L168 Benchmark]: Boogie Preprocessor took 26.60 ms. Allocated memory is still 200.8 MB. Free memory was 155.2 MB in the beginning and 153.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 19:10:58,577 INFO L168 Benchmark]: RCFGBuilder took 462.93 ms. Allocated memory is still 200.8 MB. Free memory was 153.8 MB in the beginning and 131.1 MB in the end (delta: 22.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-04-18 19:10:58,578 INFO L168 Benchmark]: TraceAbstraction took 13430.78 ms. Allocated memory was 200.8 MB in the beginning and 619.2 MB in the end (delta: 418.4 MB). Free memory was 131.1 MB in the beginning and 181.3 MB in the end (delta: -50.2 MB). Peak memory consumption was 368.2 MB. Max. memory is 7.1 GB. [2020-04-18 19:10:58,586 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 142.6 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 777.89 ms. Allocated memory was 142.6 MB in the beginning and 200.8 MB in the end (delta: 58.2 MB). Free memory was 97.1 MB in the beginning and 157.4 MB in the end (delta: -60.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 49.40 ms. Allocated memory is still 200.8 MB. Free memory was 157.4 MB in the beginning and 155.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.60 ms. Allocated memory is still 200.8 MB. Free memory was 155.2 MB in the beginning and 153.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 462.93 ms. Allocated memory is still 200.8 MB. Free memory was 153.8 MB in the beginning and 131.1 MB in the end (delta: 22.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13430.78 ms. Allocated memory was 200.8 MB in the beginning and 619.2 MB in the end (delta: 418.4 MB). Free memory was 131.1 MB in the beginning and 181.3 MB in the end (delta: -50.2 MB). Peak memory consumption was 368.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 13.3s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.5s, HoareTripleCheckerStatistics: 723 SDtfs, 2321 SDslu, 3759 SDs, 0 SdLazy, 568 SolverSat, 130 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 947 GetRequests, 754 SyntacticMatches, 2 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2319 ImplicationChecksByTransitivity, 3.7s 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: 1.7s AutomataMinimizationTime, 7 MinimizatonAttempts, 5008 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...