/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/safe023_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 19:45:20,270 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 19:45:20,272 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 19:45:20,286 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 19:45:20,286 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 19:45:20,287 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 19:45:20,289 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 19:45:20,291 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 19:45:20,292 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 19:45:20,293 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 19:45:20,294 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 19:45:20,295 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 19:45:20,296 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 19:45:20,297 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 19:45:20,298 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 19:45:20,299 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 19:45:20,300 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 19:45:20,301 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 19:45:20,302 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 19:45:20,306 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 19:45:20,311 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 19:45:20,315 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 19:45:20,316 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 19:45:20,317 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 19:45:20,320 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 19:45:20,321 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 19:45:20,321 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 19:45:20,322 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 19:45:20,322 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 19:45:20,323 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 19:45:20,323 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 19:45:20,324 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 19:45:20,325 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 19:45:20,326 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 19:45:20,326 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 19:45:20,327 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 19:45:20,327 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 19:45:20,328 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 19:45:20,328 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 19:45:20,329 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 19:45:20,329 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 19:45:20,330 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 19:45:20,350 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 19:45:20,351 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 19:45:20,353 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 19:45:20,353 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 19:45:20,353 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 19:45:20,353 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 19:45:20,353 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 19:45:20,354 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 19:45:20,354 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 19:45:20,355 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 19:45:20,355 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 19:45:20,355 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 19:45:20,355 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 19:45:20,356 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 19:45:20,356 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 19:45:20,356 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 19:45:20,356 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 19:45:20,356 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 19:45:20,357 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 19:45:20,357 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 19:45:20,357 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 19:45:20,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 19:45:20,359 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 19:45:20,359 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 19:45:20,359 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 19:45:20,359 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 19:45:20,359 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 19:45:20,360 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-04-18 19:45:20,360 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 19:45:20,360 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 19:45:20,361 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 19:45:20,631 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 19:45:20,641 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 19:45:20,648 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 19:45:20,649 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 19:45:20,650 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 19:45:20,651 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.opt.i [2020-04-18 19:45:20,713 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bef06dc0/4bda3eb555324788980705c0611c0355/FLAGac0113fd3 [2020-04-18 19:45:21,234 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 19:45:21,234 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe023_tso.opt.i [2020-04-18 19:45:21,255 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bef06dc0/4bda3eb555324788980705c0611c0355/FLAGac0113fd3 [2020-04-18 19:45:21,528 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bef06dc0/4bda3eb555324788980705c0611c0355 [2020-04-18 19:45:21,536 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 19:45:21,552 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 19:45:21,554 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 19:45:21,554 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 19:45:21,557 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 19:45:21,558 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:45:21" (1/1) ... [2020-04-18 19:45:21,561 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36b347a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:45:21, skipping insertion in model container [2020-04-18 19:45:21,562 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:45:21" (1/1) ... [2020-04-18 19:45:21,569 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 19:45:21,619 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 19:45:22,165 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 19:45:22,182 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 19:45:22,250 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 19:45:22,327 INFO L208 MainTranslator]: Completed translation [2020-04-18 19:45:22,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:45:22 WrapperNode [2020-04-18 19:45:22,328 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 19:45:22,329 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 19:45:22,329 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 19:45:22,329 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 19:45:22,339 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:45:22" (1/1) ... [2020-04-18 19:45:22,364 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:45:22" (1/1) ... [2020-04-18 19:45:22,387 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 19:45:22,387 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 19:45:22,388 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 19:45:22,388 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 19:45:22,397 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:45:22" (1/1) ... [2020-04-18 19:45:22,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:45:22" (1/1) ... [2020-04-18 19:45:22,400 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:45:22" (1/1) ... [2020-04-18 19:45:22,401 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:45:22" (1/1) ... [2020-04-18 19:45:22,407 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:45:22" (1/1) ... [2020-04-18 19:45:22,410 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:45:22" (1/1) ... [2020-04-18 19:45:22,414 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:45:22" (1/1) ... [2020-04-18 19:45:22,418 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 19:45:22,419 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 19:45:22,419 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 19:45:22,419 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 19:45:22,420 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:45:22" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 19:45:22,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 19:45:22,488 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 19:45:22,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 19:45:22,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 19:45:22,488 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 19:45:22,488 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 19:45:22,489 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 19:45:22,489 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 19:45:22,489 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 19:45:22,489 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 19:45:22,489 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 19:45:22,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 19:45:22,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 19:45:22,491 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 19:45:22,905 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 19:45:22,905 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 19:45:22,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:45:22 BoogieIcfgContainer [2020-04-18 19:45:22,909 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 19:45:22,911 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 19:45:22,911 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 19:45:22,914 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 19:45:22,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 07:45:21" (1/3) ... [2020-04-18 19:45:22,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dbcd474 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:45:22, skipping insertion in model container [2020-04-18 19:45:22,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:45:22" (2/3) ... [2020-04-18 19:45:22,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dbcd474 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:45:22, skipping insertion in model container [2020-04-18 19:45:22,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:45:22" (3/3) ... [2020-04-18 19:45:22,918 INFO L109 eAbstractionObserver]: Analyzing ICFG safe023_tso.opt.i [2020-04-18 19:45:22,926 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 19:45:22,926 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 19:45:22,933 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 19:45:22,935 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 19:45:22,966 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:45:22,966 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:45:22,967 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:45:22,967 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:45:22,968 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:45:22,968 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:45:22,969 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:45:22,969 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:45:22,970 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:45:22,970 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:45:22,970 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:45:22,971 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:45:22,972 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:45:22,972 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:45:22,972 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:45:22,973 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:45:22,974 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:45:22,975 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:45:22,983 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:45:22,983 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:45:22,983 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:45:22,984 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:45:22,992 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:45:22,992 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:45:22,993 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:45:22,993 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:45:23,003 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:45:23,004 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:45:23,004 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:45:23,004 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:45:23,019 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 19:45:23,035 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 19:45:23,036 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 19:45:23,036 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 19:45:23,036 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 19:45:23,036 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 19:45:23,036 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 19:45:23,037 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 19:45:23,037 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 19:45:23,052 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 19:45:23,545 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 8472 states. [2020-04-18 19:45:23,547 INFO L276 IsEmpty]: Start isEmpty. Operand 8472 states. [2020-04-18 19:45:23,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-04-18 19:45:23,581 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:45:23,582 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 19:45:23,583 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:45:23,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:45:23,590 INFO L82 PathProgramCache]: Analyzing trace with hash -2081382383, now seen corresponding path program 1 times [2020-04-18 19:45:23,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:45:23,598 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2091980774] [2020-04-18 19:45:23,610 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:45:23,629 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 36 transitions. [2020-04-18 19:45:23,631 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-04-18 19:45:23,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-04-18 19:45:23,632 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:45:23,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:45:23,633 INFO L82 PathProgramCache]: Analyzing trace with hash -2081382383, now seen corresponding path program 2 times [2020-04-18 19:45:23,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:45:23,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286745309] [2020-04-18 19:45:23,638 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:45:23,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:45:24,190 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 19:45:24,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286745309] [2020-04-18 19:45:24,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:45:24,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:45:24,194 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:45:24,198 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:45:24,206 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 36 transitions. [2020-04-18 19:45:24,206 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:45:24,273 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:45:24,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:45:24,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:45:24,278 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 7 states. [2020-04-18 19:45:24,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:45:24,367 INFO L93 Difference]: Finished difference Result 37 states and 36 transitions. [2020-04-18 19:45:24,368 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 36 transitions. [2020-04-18 19:45:24,368 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:45:24,369 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2091980774] [2020-04-18 19:45:24,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:45:24,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:45:24,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2091980774] [2020-04-18 19:45:24,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 19:45:24,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:45:24,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:45:24,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-04-18 19:45:24,381 INFO L87 Difference]: Start difference. First operand 8472 states. Second operand 7 states. [2020-04-18 19:45:24,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:45:24,949 INFO L93 Difference]: Finished difference Result 18356 states and 63378 transitions. [2020-04-18 19:45:24,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 19:45:24,951 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-04-18 19:45:24,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:45:25,015 INFO L225 Difference]: With dead ends: 18356 [2020-04-18 19:45:25,015 INFO L226 Difference]: Without dead ends: 5231 [2020-04-18 19:45:25,017 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-04-18 19:45:25,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5231 states. [2020-04-18 19:45:25,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5231 to 4181. [2020-04-18 19:45:25,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4181 states. [2020-04-18 19:45:25,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4181 states to 4181 states and 13603 transitions. [2020-04-18 19:45:25,488 INFO L78 Accepts]: Start accepts. Automaton has 4181 states and 13603 transitions. Word has length 36 [2020-04-18 19:45:25,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:45:25,491 INFO L479 AbstractCegarLoop]: Abstraction has 4181 states and 13603 transitions. [2020-04-18 19:45:25,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 19:45:25,494 INFO L276 IsEmpty]: Start isEmpty. Operand 4181 states and 13603 transitions. [2020-04-18 19:45:25,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 19:45:25,510 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:45:25,518 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 19:45:25,519 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:45:25,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:45:25,519 INFO L82 PathProgramCache]: Analyzing trace with hash -119523886, now seen corresponding path program 1 times [2020-04-18 19:45:25,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:45:25,520 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2091006919] [2020-04-18 19:45:25,522 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:45:25,524 INFO L259 McrAutomatonBuilder]: Finished intersection with 63 states and 86 transitions. [2020-04-18 19:45:25,527 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states. [2020-04-18 19:45:25,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 19:45:25,530 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:45:25,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:45:25,531 INFO L82 PathProgramCache]: Analyzing trace with hash -2092436526, now seen corresponding path program 2 times [2020-04-18 19:45:25,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:45:25,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238145600] [2020-04-18 19:45:25,531 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:45:25,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:45:25,756 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 19:45:25,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238145600] [2020-04-18 19:45:25,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:45:25,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:45:25,757 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:45:25,762 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:45:25,769 INFO L259 McrAutomatonBuilder]: Finished intersection with 56 states and 72 transitions. [2020-04-18 19:45:25,769 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:45:25,837 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 19:45:25,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:45:25,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:45:25,838 INFO L87 Difference]: Start difference. First operand 63 states. Second operand 7 states. [2020-04-18 19:45:25,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:45:25,955 INFO L93 Difference]: Finished difference Result 69 states and 91 transitions. [2020-04-18 19:45:25,955 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 91 transitions. [2020-04-18 19:45:25,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 19:45:25,956 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:45:25,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:45:25,956 INFO L82 PathProgramCache]: Analyzing trace with hash -119523886, now seen corresponding path program 3 times [2020-04-18 19:45:25,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:45:25,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171002813] [2020-04-18 19:45:25,957 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:45:25,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:45:26,124 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 19:45:26,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171002813] [2020-04-18 19:45:26,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:45:26,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:45:26,125 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:45:26,129 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:45:26,134 INFO L259 McrAutomatonBuilder]: Finished intersection with 51 states and 62 transitions. [2020-04-18 19:45:26,134 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:45:26,320 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 19:45:26,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 19:45:26,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-04-18 19:45:26,322 INFO L87 Difference]: Start difference. First operand 69 states and 91 transitions. Second operand 11 states. [2020-04-18 19:45:26,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:45:26,397 INFO L93 Difference]: Finished difference Result 69 states and 91 transitions. [2020-04-18 19:45:26,398 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 91 transitions. [2020-04-18 19:45:26,398 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:45:26,398 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2091006919] [2020-04-18 19:45:26,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:45:26,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:45:26,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2091006919] [2020-04-18 19:45:26,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-04-18 19:45:26,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:45:26,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 19:45:26,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=263, Unknown=0, NotChecked=0, Total=380 [2020-04-18 19:45:26,401 INFO L87 Difference]: Start difference. First operand 4181 states and 13603 transitions. Second operand 12 states. [2020-04-18 19:45:26,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:45:26,702 INFO L93 Difference]: Finished difference Result 5411 states and 17347 transitions. [2020-04-18 19:45:26,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-04-18 19:45:26,702 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 38 [2020-04-18 19:45:26,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:45:26,727 INFO L225 Difference]: With dead ends: 5411 [2020-04-18 19:45:26,728 INFO L226 Difference]: Without dead ends: 3506 [2020-04-18 19:45:26,729 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2020-04-18 19:45:26,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3506 states. [2020-04-18 19:45:26,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3506 to 3012. [2020-04-18 19:45:26,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3012 states. [2020-04-18 19:45:26,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3012 states to 3012 states and 9699 transitions. [2020-04-18 19:45:26,852 INFO L78 Accepts]: Start accepts. Automaton has 3012 states and 9699 transitions. Word has length 38 [2020-04-18 19:45:26,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:45:26,853 INFO L479 AbstractCegarLoop]: Abstraction has 3012 states and 9699 transitions. [2020-04-18 19:45:26,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-04-18 19:45:26,853 INFO L276 IsEmpty]: Start isEmpty. Operand 3012 states and 9699 transitions. [2020-04-18 19:45:26,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 19:45:26,862 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:45:26,862 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 19:45:26,862 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:45:26,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:45:26,863 INFO L82 PathProgramCache]: Analyzing trace with hash 991033051, now seen corresponding path program 1 times [2020-04-18 19:45:26,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:45:26,865 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1394936976] [2020-04-18 19:45:26,867 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:45:26,872 INFO L259 McrAutomatonBuilder]: Finished intersection with 204 states and 437 transitions. [2020-04-18 19:45:26,875 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states. [2020-04-18 19:45:26,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 19:45:26,878 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:45:26,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:45:26,878 INFO L82 PathProgramCache]: Analyzing trace with hash -981879589, now seen corresponding path program 2 times [2020-04-18 19:45:26,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:45:26,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970765034] [2020-04-18 19:45:26,879 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:45:26,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:45:27,072 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 19:45:27,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970765034] [2020-04-18 19:45:27,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:45:27,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:45:27,074 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:45:27,079 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:45:27,095 INFO L259 McrAutomatonBuilder]: Finished intersection with 122 states and 219 transitions. [2020-04-18 19:45:27,095 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:45:27,154 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 19:45:27,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:45:27,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:45:27,155 INFO L87 Difference]: Start difference. First operand 204 states. Second operand 7 states. [2020-04-18 19:45:27,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:45:27,392 INFO L93 Difference]: Finished difference Result 228 states and 475 transitions. [2020-04-18 19:45:27,392 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 475 transitions. [2020-04-18 19:45:27,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 19:45:27,393 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:45:27,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:45:27,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1573538809, now seen corresponding path program 3 times [2020-04-18 19:45:27,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:45:27,395 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837078732] [2020-04-18 19:45:27,395 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:45:27,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:45:27,672 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 19:45:27,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837078732] [2020-04-18 19:45:27,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:45:27,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:45:27,673 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:45:27,679 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:45:27,691 INFO L259 McrAutomatonBuilder]: Finished intersection with 98 states and 165 transitions. [2020-04-18 19:45:27,691 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:45:27,825 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 21 times. [2020-04-18 19:45:27,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 19:45:27,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2020-04-18 19:45:27,825 INFO L87 Difference]: Start difference. First operand 228 states and 475 transitions. Second operand 11 states. [2020-04-18 19:45:28,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:45:28,021 INFO L93 Difference]: Finished difference Result 228 states and 475 transitions. [2020-04-18 19:45:28,021 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 475 transitions. [2020-04-18 19:45:28,022 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:45:28,023 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1394936976] [2020-04-18 19:45:28,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:45:28,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:45:28,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1394936976] [2020-04-18 19:45:28,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-04-18 19:45:28,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:45:28,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 19:45:28,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=424, Unknown=0, NotChecked=0, Total=600 [2020-04-18 19:45:28,025 INFO L87 Difference]: Start difference. First operand 3012 states and 9699 transitions. Second operand 12 states. [2020-04-18 19:45:28,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:45:28,468 INFO L93 Difference]: Finished difference Result 5702 states and 17946 transitions. [2020-04-18 19:45:28,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-04-18 19:45:28,468 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 41 [2020-04-18 19:45:28,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:45:28,493 INFO L225 Difference]: With dead ends: 5702 [2020-04-18 19:45:28,493 INFO L226 Difference]: Without dead ends: 3432 [2020-04-18 19:45:28,494 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=286, Invalid=706, Unknown=0, NotChecked=0, Total=992 [2020-04-18 19:45:28,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3432 states. [2020-04-18 19:45:28,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3432 to 2536. [2020-04-18 19:45:28,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2536 states. [2020-04-18 19:45:28,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2536 states to 2536 states and 8059 transitions. [2020-04-18 19:45:28,597 INFO L78 Accepts]: Start accepts. Automaton has 2536 states and 8059 transitions. Word has length 41 [2020-04-18 19:45:28,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:45:28,597 INFO L479 AbstractCegarLoop]: Abstraction has 2536 states and 8059 transitions. [2020-04-18 19:45:28,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-04-18 19:45:28,598 INFO L276 IsEmpty]: Start isEmpty. Operand 2536 states and 8059 transitions. [2020-04-18 19:45:28,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 19:45:28,605 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:45:28,605 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:45:28,606 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:45:28,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:45:28,606 INFO L82 PathProgramCache]: Analyzing trace with hash 263373782, now seen corresponding path program 1 times [2020-04-18 19:45:28,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:45:28,607 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [601714951] [2020-04-18 19:45:28,658 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:45:28,675 INFO L259 McrAutomatonBuilder]: Finished intersection with 548 states and 1567 transitions. [2020-04-18 19:45:28,680 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states. [2020-04-18 19:45:28,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 19:45:28,683 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:45:28,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:45:28,683 INFO L82 PathProgramCache]: Analyzing trace with hash -519856170, now seen corresponding path program 2 times [2020-04-18 19:45:28,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:45:28,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967093331] [2020-04-18 19:45:28,684 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:45:28,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:45:28,799 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 19:45:28,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967093331] [2020-04-18 19:45:28,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:45:28,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:45:28,800 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:45:28,804 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:45:28,840 INFO L259 McrAutomatonBuilder]: Finished intersection with 248 states and 578 transitions. [2020-04-18 19:45:28,840 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:45:28,888 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 19:45:28,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:45:28,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:45:28,889 INFO L87 Difference]: Start difference. First operand 548 states. Second operand 7 states. [2020-04-18 19:45:29,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:45:29,106 INFO L93 Difference]: Finished difference Result 722 states and 1944 transitions. [2020-04-18 19:45:29,106 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 1944 transitions. [2020-04-18 19:45:29,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 19:45:29,109 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:45:29,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:45:29,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1483833500, now seen corresponding path program 3 times [2020-04-18 19:45:29,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:45:29,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060372486] [2020-04-18 19:45:29,110 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:45:29,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:45:29,240 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 19:45:29,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060372486] [2020-04-18 19:45:29,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:45:29,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:45:29,241 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:45:29,245 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:45:29,298 INFO L259 McrAutomatonBuilder]: Finished intersection with 313 states and 796 transitions. [2020-04-18 19:45:29,299 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:45:29,886 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 39 times. [2020-04-18 19:45:29,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-04-18 19:45:29,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=937, Unknown=0, NotChecked=0, Total=1190 [2020-04-18 19:45:29,887 INFO L87 Difference]: Start difference. First operand 722 states and 1944 transitions. Second operand 26 states. [2020-04-18 19:45:30,270 WARN L192 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-04-18 19:45:31,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:45:31,844 INFO L93 Difference]: Finished difference Result 916 states and 2366 transitions. [2020-04-18 19:45:31,844 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 2366 transitions. [2020-04-18 19:45:31,847 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:45:31,847 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [601714951] [2020-04-18 19:45:31,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:45:31,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:45:31,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [601714951] [2020-04-18 19:45:31,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-04-18 19:45:31,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:45:31,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-04-18 19:45:31,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=846, Invalid=2814, Unknown=0, NotChecked=0, Total=3660 [2020-04-18 19:45:31,849 INFO L87 Difference]: Start difference. First operand 2536 states and 8059 transitions. Second operand 27 states. [2020-04-18 19:45:32,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:45:32,069 INFO L93 Difference]: Finished difference Result 2928 states and 9173 transitions. [2020-04-18 19:45:32,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 19:45:32,069 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 43 [2020-04-18 19:45:32,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:45:32,091 INFO L225 Difference]: With dead ends: 2928 [2020-04-18 19:45:32,091 INFO L226 Difference]: Without dead ends: 1338 [2020-04-18 19:45:32,095 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1144 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1078, Invalid=3212, Unknown=0, NotChecked=0, Total=4290 [2020-04-18 19:45:32,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1338 states. [2020-04-18 19:45:32,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1338 to 1338. [2020-04-18 19:45:32,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1338 states. [2020-04-18 19:45:32,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1338 states to 1338 states and 4013 transitions. [2020-04-18 19:45:32,140 INFO L78 Accepts]: Start accepts. Automaton has 1338 states and 4013 transitions. Word has length 43 [2020-04-18 19:45:32,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:45:32,142 INFO L479 AbstractCegarLoop]: Abstraction has 1338 states and 4013 transitions. [2020-04-18 19:45:32,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-04-18 19:45:32,142 INFO L276 IsEmpty]: Start isEmpty. Operand 1338 states and 4013 transitions. [2020-04-18 19:45:32,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:45:32,145 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:45:32,146 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:45:32,146 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:45:32,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:45:32,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1879965384, now seen corresponding path program 1 times [2020-04-18 19:45:32,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:45:32,148 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1597246493] [2020-04-18 19:45:32,149 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:45:32,165 INFO L259 McrAutomatonBuilder]: Finished intersection with 720 states and 2132 transitions. [2020-04-18 19:45:32,171 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states. [2020-04-18 19:45:32,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:45:32,174 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:45:32,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:45:32,174 INFO L82 PathProgramCache]: Analyzing trace with hash -123724286, now seen corresponding path program 2 times [2020-04-18 19:45:32,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:45:32,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908158389] [2020-04-18 19:45:32,175 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:45:32,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:45:32,287 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 19:45:32,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908158389] [2020-04-18 19:45:32,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:45:32,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:45:32,288 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:45:32,292 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:45:32,343 INFO L259 McrAutomatonBuilder]: Finished intersection with 314 states and 749 transitions. [2020-04-18 19:45:32,343 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:45:32,373 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 19:45:32,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:45:32,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 19:45:32,376 INFO L87 Difference]: Start difference. First operand 720 states. Second operand 6 states. [2020-04-18 19:45:32,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:45:32,468 INFO L93 Difference]: Finished difference Result 816 states and 2356 transitions. [2020-04-18 19:45:32,468 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 2356 transitions. [2020-04-18 19:45:32,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:45:32,470 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:45:32,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:45:32,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1879965384, now seen corresponding path program 3 times [2020-04-18 19:45:32,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:45:32,470 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989974916] [2020-04-18 19:45:32,471 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:45:32,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:45:32,584 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 19:45:32,585 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989974916] [2020-04-18 19:45:32,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:45:32,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:45:32,586 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:45:32,590 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:45:32,642 INFO L259 McrAutomatonBuilder]: Finished intersection with 311 states and 742 transitions. [2020-04-18 19:45:32,642 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:45:32,700 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 23 times. [2020-04-18 19:45:32,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:45:32,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-04-18 19:45:32,701 INFO L87 Difference]: Start difference. First operand 816 states and 2356 transitions. Second operand 6 states. [2020-04-18 19:45:32,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:45:32,754 INFO L93 Difference]: Finished difference Result 816 states and 2356 transitions. [2020-04-18 19:45:32,754 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 2356 transitions. [2020-04-18 19:45:32,756 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:45:32,756 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1597246493] [2020-04-18 19:45:32,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:45:32,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 19:45:32,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1597246493] [2020-04-18 19:45:32,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-04-18 19:45:32,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:45:32,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 19:45:32,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2020-04-18 19:45:32,758 INFO L87 Difference]: Start difference. First operand 1338 states and 4013 transitions. Second operand 10 states. [2020-04-18 19:45:32,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:45:32,988 INFO L93 Difference]: Finished difference Result 1559 states and 4618 transitions. [2020-04-18 19:45:32,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-04-18 19:45:32,991 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 44 [2020-04-18 19:45:32,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:45:32,998 INFO L225 Difference]: With dead ends: 1559 [2020-04-18 19:45:32,999 INFO L226 Difference]: Without dead ends: 1183 [2020-04-18 19:45:32,999 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=143, Invalid=559, Unknown=0, NotChecked=0, Total=702 [2020-04-18 19:45:33,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2020-04-18 19:45:33,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 1183. [2020-04-18 19:45:33,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1183 states. [2020-04-18 19:45:33,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 3483 transitions. [2020-04-18 19:45:33,028 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 3483 transitions. Word has length 44 [2020-04-18 19:45:33,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:45:33,029 INFO L479 AbstractCegarLoop]: Abstraction has 1183 states and 3483 transitions. [2020-04-18 19:45:33,029 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-04-18 19:45:33,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 3483 transitions. [2020-04-18 19:45:33,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:45:33,031 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:45:33,032 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 19:45:33,032 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:45:33,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:45:33,032 INFO L82 PathProgramCache]: Analyzing trace with hash -2017855929, now seen corresponding path program 1 times [2020-04-18 19:45:33,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:45:33,033 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1121953933] [2020-04-18 19:45:33,034 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:45:33,055 INFO L259 McrAutomatonBuilder]: Finished intersection with 896 states and 2705 transitions. [2020-04-18 19:45:33,063 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states. [2020-04-18 19:45:33,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:45:33,066 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:45:33,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:45:33,066 INFO L82 PathProgramCache]: Analyzing trace with hash 273421697, now seen corresponding path program 2 times [2020-04-18 19:45:33,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:45:33,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402490937] [2020-04-18 19:45:33,067 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:45:33,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:45:33,154 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 19:45:33,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402490937] [2020-04-18 19:45:33,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:45:33,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:45:33,155 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:45:33,160 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:45:33,225 INFO L259 McrAutomatonBuilder]: Finished intersection with 250 states and 545 transitions. [2020-04-18 19:45:33,225 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:45:33,259 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 19:45:33,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:45:33,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 19:45:33,260 INFO L87 Difference]: Start difference. First operand 896 states. Second operand 6 states. [2020-04-18 19:45:33,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:45:33,354 INFO L93 Difference]: Finished difference Result 1016 states and 2991 transitions. [2020-04-18 19:45:33,354 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states and 2991 transitions. [2020-04-18 19:45:33,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:45:33,357 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:45:33,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:45:33,358 INFO L82 PathProgramCache]: Analyzing trace with hash -2017855929, now seen corresponding path program 3 times [2020-04-18 19:45:33,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:45:33,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065359288] [2020-04-18 19:45:33,358 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:45:33,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:45:33,446 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 19:45:33,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065359288] [2020-04-18 19:45:33,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:45:33,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:45:33,447 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:45:33,451 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:45:33,479 INFO L259 McrAutomatonBuilder]: Finished intersection with 239 states and 518 transitions. [2020-04-18 19:45:33,479 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:45:33,587 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 14 times. [2020-04-18 19:45:33,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:45:33,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2020-04-18 19:45:33,588 INFO L87 Difference]: Start difference. First operand 1016 states and 2991 transitions. Second operand 8 states. [2020-04-18 19:45:33,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:45:33,718 INFO L93 Difference]: Finished difference Result 1016 states and 2991 transitions. [2020-04-18 19:45:33,719 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states and 2991 transitions. [2020-04-18 19:45:33,720 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:45:33,721 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1121953933] [2020-04-18 19:45:33,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:45:33,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:45:33,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1121953933] [2020-04-18 19:45:33,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-04-18 19:45:33,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:45:33,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 19:45:33,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2020-04-18 19:45:33,723 INFO L87 Difference]: Start difference. First operand 1183 states and 3483 transitions. Second operand 12 states. [2020-04-18 19:45:34,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:45:34,015 INFO L93 Difference]: Finished difference Result 1069 states and 3044 transitions. [2020-04-18 19:45:34,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-04-18 19:45:34,023 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 45 [2020-04-18 19:45:34,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:45:34,028 INFO L225 Difference]: With dead ends: 1069 [2020-04-18 19:45:34,028 INFO L226 Difference]: Without dead ends: 793 [2020-04-18 19:45:34,029 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=200, Invalid=856, Unknown=0, NotChecked=0, Total=1056 [2020-04-18 19:45:34,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2020-04-18 19:45:34,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 793. [2020-04-18 19:45:34,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 793 states. [2020-04-18 19:45:34,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 2203 transitions. [2020-04-18 19:45:34,048 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 2203 transitions. Word has length 45 [2020-04-18 19:45:34,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:45:34,048 INFO L479 AbstractCegarLoop]: Abstraction has 793 states and 2203 transitions. [2020-04-18 19:45:34,048 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-04-18 19:45:34,048 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 2203 transitions. [2020-04-18 19:45:34,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 19:45:34,050 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:45:34,050 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, 1] [2020-04-18 19:45:34,050 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:45:34,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:45:34,051 INFO L82 PathProgramCache]: Analyzing trace with hash 1572381084, now seen corresponding path program 1 times [2020-04-18 19:45:34,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:45:34,051 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [741136282] [2020-04-18 19:45:34,053 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:45:34,076 INFO L259 McrAutomatonBuilder]: Finished intersection with 1111 states and 3422 transitions. [2020-04-18 19:45:34,084 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states. [2020-04-18 19:45:34,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 19:45:34,087 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:45:34,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:45:34,088 INFO L82 PathProgramCache]: Analyzing trace with hash -960675848, now seen corresponding path program 2 times [2020-04-18 19:45:34,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:45:34,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125484256] [2020-04-18 19:45:34,088 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:45:34,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:45:34,204 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 19:45:34,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125484256] [2020-04-18 19:45:34,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:45:34,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:45:34,205 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:45:34,209 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:45:34,245 INFO L259 McrAutomatonBuilder]: Finished intersection with 278 states and 615 transitions. [2020-04-18 19:45:34,245 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:45:34,285 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 11 times. [2020-04-18 19:45:34,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:45:34,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:45:34,286 INFO L87 Difference]: Start difference. First operand 1111 states. Second operand 7 states. [2020-04-18 19:45:34,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:45:34,522 INFO L93 Difference]: Finished difference Result 1516 states and 4401 transitions. [2020-04-18 19:45:34,522 INFO L276 IsEmpty]: Start isEmpty. Operand 1516 states and 4401 transitions. [2020-04-18 19:45:34,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 19:45:34,526 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:45:34,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:45:34,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1043013822, now seen corresponding path program 3 times [2020-04-18 19:45:34,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:45:34,527 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696322093] [2020-04-18 19:45:34,527 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:45:34,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:45:34,642 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 19:45:34,642 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696322093] [2020-04-18 19:45:34,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:45:34,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:45:34,643 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:45:34,647 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:45:34,728 INFO L259 McrAutomatonBuilder]: Finished intersection with 260 states and 567 transitions. [2020-04-18 19:45:34,728 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:45:34,855 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 16 times. [2020-04-18 19:45:34,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:45:34,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2020-04-18 19:45:34,856 INFO L87 Difference]: Start difference. First operand 1516 states and 4401 transitions. Second operand 8 states. [2020-04-18 19:45:35,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:45:35,135 INFO L93 Difference]: Finished difference Result 1516 states and 4401 transitions. [2020-04-18 19:45:35,135 INFO L276 IsEmpty]: Start isEmpty. Operand 1516 states and 4401 transitions. [2020-04-18 19:45:35,137 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:45:35,137 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [741136282] [2020-04-18 19:45:35,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:45:35,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:45:35,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [741136282] [2020-04-18 19:45:35,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-04-18 19:45:35,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:45:35,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 19:45:35,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=657, Unknown=0, NotChecked=0, Total=812 [2020-04-18 19:45:35,139 INFO L87 Difference]: Start difference. First operand 793 states and 2203 transitions. Second operand 13 states. [2020-04-18 19:45:35,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:45:35,298 INFO L93 Difference]: Finished difference Result 496 states and 1312 transitions. [2020-04-18 19:45:35,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-04-18 19:45:35,298 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 46 [2020-04-18 19:45:35,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:45:35,299 INFO L225 Difference]: With dead ends: 496 [2020-04-18 19:45:35,299 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 19:45:35,300 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=216, Invalid=1044, Unknown=0, NotChecked=0, Total=1260 [2020-04-18 19:45:35,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 19:45:35,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 19:45:35,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 19:45:35,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 19:45:35,301 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 46 [2020-04-18 19:45:35,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:45:35,301 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 19:45:35,301 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-04-18 19:45:35,301 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 19:45:35,301 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:45:35,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 07:45:35 BasicIcfg [2020-04-18 19:45:35,307 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 19:45:35,308 INFO L168 Benchmark]: Toolchain (without parser) took 13770.69 ms. Allocated memory was 142.1 MB in the beginning and 604.0 MB in the end (delta: 461.9 MB). Free memory was 101.3 MB in the beginning and 416.8 MB in the end (delta: -315.5 MB). Peak memory consumption was 146.4 MB. Max. memory is 7.1 GB. [2020-04-18 19:45:35,309 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 142.1 MB. Free memory was 121.5 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-18 19:45:35,310 INFO L168 Benchmark]: CACSL2BoogieTranslator took 774.77 ms. Allocated memory was 142.1 MB in the beginning and 204.5 MB in the end (delta: 62.4 MB). Free memory was 99.3 MB in the beginning and 160.9 MB in the end (delta: -61.6 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. [2020-04-18 19:45:35,310 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.35 ms. Allocated memory is still 204.5 MB. Free memory was 160.9 MB in the beginning and 158.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 19:45:35,311 INFO L168 Benchmark]: Boogie Preprocessor took 31.07 ms. Allocated memory is still 204.5 MB. Free memory was 158.9 MB in the beginning and 157.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 19:45:35,312 INFO L168 Benchmark]: RCFGBuilder took 490.80 ms. Allocated memory is still 204.5 MB. Free memory was 157.6 MB in the beginning and 135.5 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-04-18 19:45:35,312 INFO L168 Benchmark]: TraceAbstraction took 12396.13 ms. Allocated memory was 204.5 MB in the beginning and 604.0 MB in the end (delta: 399.5 MB). Free memory was 134.8 MB in the beginning and 416.8 MB in the end (delta: -282.0 MB). Peak memory consumption was 117.6 MB. Max. memory is 7.1 GB. [2020-04-18 19:45:35,316 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 142.1 MB. Free memory was 121.5 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 774.77 ms. Allocated memory was 142.1 MB in the beginning and 204.5 MB in the end (delta: 62.4 MB). Free memory was 99.3 MB in the beginning and 160.9 MB in the end (delta: -61.6 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 58.35 ms. Allocated memory is still 204.5 MB. Free memory was 160.9 MB in the beginning and 158.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 31.07 ms. Allocated memory is still 204.5 MB. Free memory was 158.9 MB in the beginning and 157.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 490.80 ms. Allocated memory is still 204.5 MB. Free memory was 157.6 MB in the beginning and 135.5 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12396.13 ms. Allocated memory was 204.5 MB in the beginning and 604.0 MB in the end (delta: 399.5 MB). Free memory was 134.8 MB in the beginning and 416.8 MB in the end (delta: -282.0 MB). Peak memory consumption was 117.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 12.2s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.5s, HoareTripleCheckerStatistics: 617 SDtfs, 2938 SDslu, 3454 SDs, 0 SdLazy, 612 SolverSat, 184 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 875 GetRequests, 656 SyntacticMatches, 0 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2184 ImplicationChecksByTransitivity, 4.6s 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: 0.7s AutomataMinimizationTime, 7 MinimizatonAttempts, 2440 StatesRemovedByMinimization, 3 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...