/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/thin002_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 20:08:50,616 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 20:08:50,618 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 20:08:50,630 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 20:08:50,630 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 20:08:50,631 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 20:08:50,633 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 20:08:50,635 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 20:08:50,636 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 20:08:50,637 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 20:08:50,638 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 20:08:50,639 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 20:08:50,639 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 20:08:50,644 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 20:08:50,645 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 20:08:50,646 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 20:08:50,650 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 20:08:50,651 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 20:08:50,652 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 20:08:50,654 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 20:08:50,656 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 20:08:50,658 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 20:08:50,659 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 20:08:50,663 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 20:08:50,668 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 20:08:50,669 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 20:08:50,669 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 20:08:50,670 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 20:08:50,671 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 20:08:50,672 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 20:08:50,672 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 20:08:50,675 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 20:08:50,676 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 20:08:50,677 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 20:08:50,679 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 20:08:50,679 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 20:08:50,679 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 20:08:50,680 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 20:08:50,680 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 20:08:50,683 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 20:08:50,684 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 20:08:50,685 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 20:08:50,710 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 20:08:50,710 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 20:08:50,712 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 20:08:50,713 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 20:08:50,713 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 20:08:50,713 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 20:08:50,713 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 20:08:50,713 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 20:08:50,714 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 20:08:50,714 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 20:08:50,715 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 20:08:50,715 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 20:08:50,715 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 20:08:50,716 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 20:08:50,716 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 20:08:50,716 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 20:08:50,716 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 20:08:50,717 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 20:08:50,717 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 20:08:50,717 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 20:08:50,717 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 20:08:50,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 20:08:50,718 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 20:08:50,718 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 20:08:50,718 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 20:08:50,718 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 20:08:50,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 20:08:50,719 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-04-18 20:08:50,719 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 20:08:50,719 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 20:08:50,720 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 20:08:51,001 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 20:08:51,017 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 20:08:51,020 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 20:08:51,022 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 20:08:51,022 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 20:08:51,024 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin002_tso.opt.i [2020-04-18 20:08:51,111 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60578de4b/b7c9599d7a994fc9adb606065437d105/FLAGb4bdc4710 [2020-04-18 20:08:51,682 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 20:08:51,683 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_tso.opt.i [2020-04-18 20:08:51,706 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60578de4b/b7c9599d7a994fc9adb606065437d105/FLAGb4bdc4710 [2020-04-18 20:08:52,034 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60578de4b/b7c9599d7a994fc9adb606065437d105 [2020-04-18 20:08:52,041 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 20:08:52,064 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 20:08:52,065 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 20:08:52,065 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 20:08:52,068 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 20:08:52,069 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 08:08:52" (1/1) ... [2020-04-18 20:08:52,072 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38ed5182 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:08:52, skipping insertion in model container [2020-04-18 20:08:52,072 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 08:08:52" (1/1) ... [2020-04-18 20:08:52,080 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 20:08:52,135 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 20:08:52,611 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 20:08:52,626 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 20:08:52,684 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 20:08:52,794 INFO L208 MainTranslator]: Completed translation [2020-04-18 20:08:52,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:08:52 WrapperNode [2020-04-18 20:08:52,795 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 20:08:52,796 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 20:08:52,796 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 20:08:52,797 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 20:08:52,809 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:08:52" (1/1) ... [2020-04-18 20:08:52,831 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:08:52" (1/1) ... [2020-04-18 20:08:52,853 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 20:08:52,853 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 20:08:52,853 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 20:08:52,853 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 20:08:52,863 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:08:52" (1/1) ... [2020-04-18 20:08:52,863 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:08:52" (1/1) ... [2020-04-18 20:08:52,867 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:08:52" (1/1) ... [2020-04-18 20:08:52,867 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:08:52" (1/1) ... [2020-04-18 20:08:52,874 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:08:52" (1/1) ... [2020-04-18 20:08:52,877 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:08:52" (1/1) ... [2020-04-18 20:08:52,879 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:08:52" (1/1) ... [2020-04-18 20:08:52,883 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 20:08:52,883 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 20:08:52,883 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 20:08:52,884 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 20:08:52,884 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:08:52" (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 20:08:52,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 20:08:52,964 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 20:08:52,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 20:08:52,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 20:08:52,965 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 20:08:52,965 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 20:08:52,965 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 20:08:52,965 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 20:08:52,966 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 20:08:52,966 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 20:08:52,966 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-04-18 20:08:52,966 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-04-18 20:08:52,966 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 20:08:52,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 20:08:52,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 20:08:52,968 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 20:08:53,447 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 20:08:53,448 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 20:08:53,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 08:08:53 BoogieIcfgContainer [2020-04-18 20:08:53,459 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 20:08:53,462 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 20:08:53,462 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 20:08:53,466 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 20:08:53,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 08:08:52" (1/3) ... [2020-04-18 20:08:53,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2febbe93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 08:08:53, skipping insertion in model container [2020-04-18 20:08:53,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:08:52" (2/3) ... [2020-04-18 20:08:53,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2febbe93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 08:08:53, skipping insertion in model container [2020-04-18 20:08:53,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 08:08:53" (3/3) ... [2020-04-18 20:08:53,471 INFO L109 eAbstractionObserver]: Analyzing ICFG thin002_tso.opt.i [2020-04-18 20:08:53,480 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 20:08:53,480 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 20:08:53,488 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 20:08:53,489 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 20:08:53,518 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:08:53,519 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:08:53,519 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:08:53,520 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:08:53,520 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:08:53,520 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:08:53,521 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:08:53,522 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:08:53,522 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:08:53,522 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:08:53,524 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:08:53,524 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:08:53,525 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:08:53,525 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:08:53,526 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:08:53,526 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:08:53,526 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:08:53,527 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:08:53,527 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:08:53,527 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:08:53,527 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:08:53,528 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:08:53,528 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:08:53,529 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:08:53,532 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:08:53,533 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:08:53,533 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:08:53,533 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:08:53,540 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:08:53,540 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:08:53,540 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:08:53,540 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:08:53,543 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:08:53,543 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:08:53,543 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:08:53,543 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:08:53,546 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:08:53,546 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:08:53,546 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:08:53,547 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:08:53,562 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-04-18 20:08:53,579 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 20:08:53,579 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 20:08:53,580 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 20:08:53,580 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 20:08:53,580 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 20:08:53,580 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 20:08:53,580 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 20:08:53,580 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 20:08:53,594 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 97 places, 86 transitions, 192 flow [2020-04-18 20:09:03,408 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 64041 states. [2020-04-18 20:09:03,410 INFO L276 IsEmpty]: Start isEmpty. Operand 64041 states. [2020-04-18 20:09:03,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 20:09:03,494 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 20:09:03,496 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 20:09:03,496 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 20:09:03,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:09:03,503 INFO L82 PathProgramCache]: Analyzing trace with hash 1376710148, now seen corresponding path program 1 times [2020-04-18 20:09:03,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 20:09:03,511 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [226702099] [2020-04-18 20:09:03,527 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:09:03,544 INFO L259 McrAutomatonBuilder]: Finished intersection with 44 states and 43 transitions. [2020-04-18 20:09:03,546 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-04-18 20:09:03,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 20:09:03,547 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 20:09:03,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:09:03,548 INFO L82 PathProgramCache]: Analyzing trace with hash 1376710148, now seen corresponding path program 2 times [2020-04-18 20:09:03,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:09:03,552 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338458133] [2020-04-18 20:09:03,552 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:09:03,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:09:04,111 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 20:09:04,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338458133] [2020-04-18 20:09:04,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:09:04,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 20:09:04,115 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:09:04,120 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:09:04,132 INFO L259 McrAutomatonBuilder]: Finished intersection with 44 states and 43 transitions. [2020-04-18 20:09:04,132 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:09:04,208 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 20:09:04,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 20:09:04,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 20:09:04,216 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 7 states. [2020-04-18 20:09:04,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:09:04,298 INFO L93 Difference]: Finished difference Result 44 states and 43 transitions. [2020-04-18 20:09:04,298 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 43 transitions. [2020-04-18 20:09:04,299 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 20:09:04,300 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [226702099] [2020-04-18 20:09:04,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 20:09:04,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 20:09:04,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [226702099] [2020-04-18 20:09:04,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 20:09:04,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 20:09:04,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 20:09:04,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-04-18 20:09:04,307 INFO L87 Difference]: Start difference. First operand 64041 states. Second operand 7 states. [2020-04-18 20:09:06,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:09:06,568 INFO L93 Difference]: Finished difference Result 90109 states and 391525 transitions. [2020-04-18 20:09:06,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-04-18 20:09:06,572 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 43 [2020-04-18 20:09:06,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 20:09:06,833 INFO L225 Difference]: With dead ends: 90109 [2020-04-18 20:09:06,834 INFO L226 Difference]: Without dead ends: 28712 [2020-04-18 20:09:06,846 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-04-18 20:09:07,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28712 states. [2020-04-18 20:09:09,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28712 to 28712. [2020-04-18 20:09:09,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28712 states. [2020-04-18 20:09:09,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28712 states to 28712 states and 122515 transitions. [2020-04-18 20:09:09,992 INFO L78 Accepts]: Start accepts. Automaton has 28712 states and 122515 transitions. Word has length 43 [2020-04-18 20:09:09,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 20:09:09,994 INFO L479 AbstractCegarLoop]: Abstraction has 28712 states and 122515 transitions. [2020-04-18 20:09:09,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 20:09:09,994 INFO L276 IsEmpty]: Start isEmpty. Operand 28712 states and 122515 transitions. [2020-04-18 20:09:10,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 20:09:10,035 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 20:09:10,035 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 20:09:10,036 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 20:09:10,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:09:10,036 INFO L82 PathProgramCache]: Analyzing trace with hash 1523533381, now seen corresponding path program 1 times [2020-04-18 20:09:10,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 20:09:10,037 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1056083936] [2020-04-18 20:09:10,038 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:09:10,041 INFO L259 McrAutomatonBuilder]: Finished intersection with 86 states and 125 transitions. [2020-04-18 20:09:10,042 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states. [2020-04-18 20:09:10,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 20:09:10,043 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 20:09:10,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:09:10,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1523533381, now seen corresponding path program 2 times [2020-04-18 20:09:10,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:09:10,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710385464] [2020-04-18 20:09:10,044 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:09:10,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:09:10,302 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 20:09:10,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710385464] [2020-04-18 20:09:10,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:09:10,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 20:09:10,304 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:09:10,308 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:09:10,317 INFO L259 McrAutomatonBuilder]: Finished intersection with 74 states and 101 transitions. [2020-04-18 20:09:10,317 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:09:10,378 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 20:09:10,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 20:09:10,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-04-18 20:09:10,379 INFO L87 Difference]: Start difference. First operand 86 states. Second operand 7 states. [2020-04-18 20:09:10,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:09:10,520 INFO L93 Difference]: Finished difference Result 86 states and 125 transitions. [2020-04-18 20:09:10,520 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 125 transitions. [2020-04-18 20:09:10,520 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 20:09:10,521 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1056083936] [2020-04-18 20:09:10,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 20:09:10,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 20:09:10,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1056083936] [2020-04-18 20:09:10,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 20:09:10,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 20:09:10,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 20:09:10,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-04-18 20:09:10,523 INFO L87 Difference]: Start difference. First operand 28712 states and 122515 transitions. Second operand 7 states. [2020-04-18 20:09:11,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:09:11,737 INFO L93 Difference]: Finished difference Result 54757 states and 231756 transitions. [2020-04-18 20:09:11,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-04-18 20:09:11,738 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 45 [2020-04-18 20:09:11,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 20:09:11,959 INFO L225 Difference]: With dead ends: 54757 [2020-04-18 20:09:11,959 INFO L226 Difference]: Without dead ends: 36822 [2020-04-18 20:09:11,961 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2020-04-18 20:09:12,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36822 states. [2020-04-18 20:09:15,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36822 to 36822. [2020-04-18 20:09:15,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36822 states. [2020-04-18 20:09:15,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36822 states to 36822 states and 156298 transitions. [2020-04-18 20:09:15,438 INFO L78 Accepts]: Start accepts. Automaton has 36822 states and 156298 transitions. Word has length 45 [2020-04-18 20:09:15,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 20:09:15,439 INFO L479 AbstractCegarLoop]: Abstraction has 36822 states and 156298 transitions. [2020-04-18 20:09:15,439 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 20:09:15,439 INFO L276 IsEmpty]: Start isEmpty. Operand 36822 states and 156298 transitions. [2020-04-18 20:09:15,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-04-18 20:09:15,499 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 20:09:15,499 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 20:09:15,499 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 20:09:15,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:09:15,499 INFO L82 PathProgramCache]: Analyzing trace with hash 944695778, now seen corresponding path program 1 times [2020-04-18 20:09:15,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 20:09:15,500 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1327557790] [2020-04-18 20:09:15,504 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:09:15,510 INFO L259 McrAutomatonBuilder]: Finished intersection with 220 states and 471 transitions. [2020-04-18 20:09:15,513 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states. [2020-04-18 20:09:15,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-04-18 20:09:15,515 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 20:09:15,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:09:15,516 INFO L82 PathProgramCache]: Analyzing trace with hash -42200762, now seen corresponding path program 2 times [2020-04-18 20:09:15,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:09:15,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894089491] [2020-04-18 20:09:15,517 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:09:15,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:09:15,708 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 20:09:15,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894089491] [2020-04-18 20:09:15,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:09:15,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 20:09:15,710 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:09:15,716 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:09:15,740 INFO L259 McrAutomatonBuilder]: Finished intersection with 172 states and 351 transitions. [2020-04-18 20:09:15,741 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:09:15,832 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 20:09:15,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 20:09:15,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-04-18 20:09:15,833 INFO L87 Difference]: Start difference. First operand 220 states. Second operand 9 states. [2020-04-18 20:09:15,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:09:15,953 INFO L93 Difference]: Finished difference Result 220 states and 471 transitions. [2020-04-18 20:09:15,953 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 471 transitions. [2020-04-18 20:09:15,955 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 20:09:15,956 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1327557790] [2020-04-18 20:09:15,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 20:09:15,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 20:09:15,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1327557790] [2020-04-18 20:09:15,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 20:09:15,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 20:09:15,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 20:09:15,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-04-18 20:09:15,959 INFO L87 Difference]: Start difference. First operand 36822 states and 156298 transitions. Second operand 9 states. [2020-04-18 20:09:16,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:09:16,487 INFO L93 Difference]: Finished difference Result 48732 states and 204461 transitions. [2020-04-18 20:09:16,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-04-18 20:09:16,487 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 47 [2020-04-18 20:09:16,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 20:09:16,583 INFO L225 Difference]: With dead ends: 48732 [2020-04-18 20:09:16,583 INFO L226 Difference]: Without dead ends: 21087 [2020-04-18 20:09:16,584 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2020-04-18 20:09:16,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21087 states. [2020-04-18 20:09:17,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21087 to 17737. [2020-04-18 20:09:17,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17737 states. [2020-04-18 20:09:17,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17737 states to 17737 states and 73353 transitions. [2020-04-18 20:09:17,599 INFO L78 Accepts]: Start accepts. Automaton has 17737 states and 73353 transitions. Word has length 47 [2020-04-18 20:09:17,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 20:09:17,600 INFO L479 AbstractCegarLoop]: Abstraction has 17737 states and 73353 transitions. [2020-04-18 20:09:17,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 20:09:17,600 INFO L276 IsEmpty]: Start isEmpty. Operand 17737 states and 73353 transitions. [2020-04-18 20:09:17,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-04-18 20:09:17,632 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 20:09:17,633 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, 1, 1, 1, 1] [2020-04-18 20:09:17,633 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 20:09:17,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:09:17,633 INFO L82 PathProgramCache]: Analyzing trace with hash -1811649531, now seen corresponding path program 1 times [2020-04-18 20:09:17,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 20:09:17,634 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [295581574] [2020-04-18 20:09:17,636 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:09:17,649 INFO L259 McrAutomatonBuilder]: Finished intersection with 571 states and 1614 transitions. [2020-04-18 20:09:17,653 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states. [2020-04-18 20:09:17,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-04-18 20:09:17,655 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 20:09:17,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:09:17,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1030303245, now seen corresponding path program 2 times [2020-04-18 20:09:17,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:09:17,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124123762] [2020-04-18 20:09:17,656 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:09:17,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:09:17,817 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 20:09:17,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124123762] [2020-04-18 20:09:17,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:09:17,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 20:09:17,819 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:09:17,824 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:09:17,877 INFO L259 McrAutomatonBuilder]: Finished intersection with 325 states and 818 transitions. [2020-04-18 20:09:17,877 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:09:17,990 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 11 times. [2020-04-18 20:09:17,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 20:09:17,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-04-18 20:09:17,991 INFO L87 Difference]: Start difference. First operand 571 states. Second operand 10 states. [2020-04-18 20:09:18,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:09:18,123 INFO L93 Difference]: Finished difference Result 571 states and 1614 transitions. [2020-04-18 20:09:18,124 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 1614 transitions. [2020-04-18 20:09:18,125 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 20:09:18,126 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [295581574] [2020-04-18 20:09:18,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 20:09:18,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 20:09:18,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [295581574] [2020-04-18 20:09:18,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-04-18 20:09:18,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 20:09:18,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 20:09:18,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-04-18 20:09:18,129 INFO L87 Difference]: Start difference. First operand 17737 states and 73353 transitions. Second operand 10 states. [2020-04-18 20:09:18,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:09:18,374 INFO L93 Difference]: Finished difference Result 19337 states and 79413 transitions. [2020-04-18 20:09:18,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-04-18 20:09:18,374 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 50 [2020-04-18 20:09:18,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 20:09:18,430 INFO L225 Difference]: With dead ends: 19337 [2020-04-18 20:09:18,431 INFO L226 Difference]: Without dead ends: 16537 [2020-04-18 20:09:18,431 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2020-04-18 20:09:18,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16537 states. [2020-04-18 20:09:18,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16537 to 15137. [2020-04-18 20:09:18,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15137 states. [2020-04-18 20:09:18,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15137 states to 15137 states and 62243 transitions. [2020-04-18 20:09:18,948 INFO L78 Accepts]: Start accepts. Automaton has 15137 states and 62243 transitions. Word has length 50 [2020-04-18 20:09:18,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 20:09:18,949 INFO L479 AbstractCegarLoop]: Abstraction has 15137 states and 62243 transitions. [2020-04-18 20:09:18,949 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-04-18 20:09:18,949 INFO L276 IsEmpty]: Start isEmpty. Operand 15137 states and 62243 transitions. [2020-04-18 20:09:19,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-04-18 20:09:19,403 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 20:09:19,404 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, 1, 1, 1, 1, 1, 1] [2020-04-18 20:09:19,404 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 20:09:19,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:09:19,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1216857402, now seen corresponding path program 1 times [2020-04-18 20:09:19,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 20:09:19,405 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1118436247] [2020-04-18 20:09:19,407 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:09:19,447 INFO L259 McrAutomatonBuilder]: Finished intersection with 1579 states and 5604 transitions. [2020-04-18 20:09:19,460 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states. [2020-04-18 20:09:19,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-04-18 20:09:19,465 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 20:09:19,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:09:19,465 INFO L82 PathProgramCache]: Analyzing trace with hash 765364398, now seen corresponding path program 2 times [2020-04-18 20:09:19,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:09:19,466 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266699905] [2020-04-18 20:09:19,466 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:09:19,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:09:19,602 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 20:09:19,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266699905] [2020-04-18 20:09:19,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:09:19,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 20:09:19,603 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:09:19,611 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:09:19,810 INFO L259 McrAutomatonBuilder]: Finished intersection with 817 states and 2664 transitions. [2020-04-18 20:09:19,810 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:09:20,237 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 39 times. [2020-04-18 20:09:20,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-04-18 20:09:20,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2020-04-18 20:09:20,238 INFO L87 Difference]: Start difference. First operand 1579 states. Second operand 19 states. [2020-04-18 20:09:20,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:09:20,704 INFO L93 Difference]: Finished difference Result 1579 states and 5604 transitions. [2020-04-18 20:09:20,705 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 5604 transitions. [2020-04-18 20:09:20,710 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 20:09:20,711 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1118436247] [2020-04-18 20:09:20,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 20:09:20,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 20:09:20,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1118436247] [2020-04-18 20:09:20,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-04-18 20:09:20,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 20:09:20,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-04-18 20:09:20,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=505, Unknown=0, NotChecked=0, Total=702 [2020-04-18 20:09:20,712 INFO L87 Difference]: Start difference. First operand 15137 states and 62243 transitions. Second operand 19 states. [2020-04-18 20:09:21,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:09:21,072 INFO L93 Difference]: Finished difference Result 22417 states and 91719 transitions. [2020-04-18 20:09:21,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-04-18 20:09:21,073 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 52 [2020-04-18 20:09:21,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 20:09:21,096 INFO L225 Difference]: With dead ends: 22417 [2020-04-18 20:09:21,096 INFO L226 Difference]: Without dead ends: 10127 [2020-04-18 20:09:21,097 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=233, Invalid=637, Unknown=0, NotChecked=0, Total=870 [2020-04-18 20:09:21,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10127 states. [2020-04-18 20:09:21,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10127 to 10127. [2020-04-18 20:09:21,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10127 states. [2020-04-18 20:09:21,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10127 states to 10127 states and 40341 transitions. [2020-04-18 20:09:21,363 INFO L78 Accepts]: Start accepts. Automaton has 10127 states and 40341 transitions. Word has length 52 [2020-04-18 20:09:21,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 20:09:21,364 INFO L479 AbstractCegarLoop]: Abstraction has 10127 states and 40341 transitions. [2020-04-18 20:09:21,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-04-18 20:09:21,364 INFO L276 IsEmpty]: Start isEmpty. Operand 10127 states and 40341 transitions. [2020-04-18 20:09:21,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-04-18 20:09:21,381 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 20:09:21,382 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, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 20:09:21,382 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 20:09:21,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:09:21,382 INFO L82 PathProgramCache]: Analyzing trace with hash -1818310354, now seen corresponding path program 1 times [2020-04-18 20:09:21,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 20:09:21,382 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [388352915] [2020-04-18 20:09:21,384 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:09:21,420 INFO L259 McrAutomatonBuilder]: Finished intersection with 2083 states and 7599 transitions. [2020-04-18 20:09:21,438 INFO L276 IsEmpty]: Start isEmpty. Operand 2083 states. [2020-04-18 20:09:21,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-04-18 20:09:21,442 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 20:09:21,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:09:21,442 INFO L82 PathProgramCache]: Analyzing trace with hash -2043504398, now seen corresponding path program 2 times [2020-04-18 20:09:21,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:09:21,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302927732] [2020-04-18 20:09:21,443 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:09:21,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:09:21,580 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 20:09:21,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302927732] [2020-04-18 20:09:21,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:09:21,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 20:09:21,581 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:09:21,587 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:09:21,915 INFO L259 McrAutomatonBuilder]: Finished intersection with 913 states and 2969 transitions. [2020-04-18 20:09:21,915 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:09:22,310 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 35 times. [2020-04-18 20:09:22,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-04-18 20:09:22,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2020-04-18 20:09:22,311 INFO L87 Difference]: Start difference. First operand 2083 states. Second operand 19 states. [2020-04-18 20:09:22,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:09:22,626 INFO L93 Difference]: Finished difference Result 2083 states and 7599 transitions. [2020-04-18 20:09:22,626 INFO L276 IsEmpty]: Start isEmpty. Operand 2083 states and 7599 transitions. [2020-04-18 20:09:22,630 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 20:09:22,631 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [388352915] [2020-04-18 20:09:22,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 20:09:22,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 20:09:22,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [388352915] [2020-04-18 20:09:22,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-04-18 20:09:22,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 20:09:22,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-04-18 20:09:22,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=473, Unknown=0, NotChecked=0, Total=650 [2020-04-18 20:09:22,633 INFO L87 Difference]: Start difference. First operand 10127 states and 40341 transitions. Second operand 19 states. [2020-04-18 20:09:22,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:09:22,874 INFO L93 Difference]: Finished difference Result 13487 states and 53589 transitions. [2020-04-18 20:09:22,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 20:09:22,875 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 53 [2020-04-18 20:09:22,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 20:09:22,892 INFO L225 Difference]: With dead ends: 13487 [2020-04-18 20:09:22,892 INFO L226 Difference]: Without dead ends: 6387 [2020-04-18 20:09:22,893 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=219, Invalid=593, Unknown=0, NotChecked=0, Total=812 [2020-04-18 20:09:22,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6387 states. [2020-04-18 20:09:23,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6387 to 6387. [2020-04-18 20:09:23,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6387 states. [2020-04-18 20:09:23,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6387 states to 6387 states and 24959 transitions. [2020-04-18 20:09:23,041 INFO L78 Accepts]: Start accepts. Automaton has 6387 states and 24959 transitions. Word has length 53 [2020-04-18 20:09:23,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 20:09:23,041 INFO L479 AbstractCegarLoop]: Abstraction has 6387 states and 24959 transitions. [2020-04-18 20:09:23,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-04-18 20:09:23,041 INFO L276 IsEmpty]: Start isEmpty. Operand 6387 states and 24959 transitions. [2020-04-18 20:09:23,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-04-18 20:09:23,048 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 20:09:23,049 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 20:09:23,049 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 20:09:23,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:09:23,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1152831262, now seen corresponding path program 1 times [2020-04-18 20:09:23,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 20:09:23,050 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2064662557] [2020-04-18 20:09:23,051 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:09:23,097 INFO L259 McrAutomatonBuilder]: Finished intersection with 2771 states and 10355 transitions. [2020-04-18 20:09:23,120 INFO L276 IsEmpty]: Start isEmpty. Operand 2771 states. [2020-04-18 20:09:23,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-04-18 20:09:23,129 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 20:09:23,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:09:23,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1180213840, now seen corresponding path program 2 times [2020-04-18 20:09:23,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:09:23,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080744314] [2020-04-18 20:09:23,130 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:09:23,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:09:23,260 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 20:09:23,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080744314] [2020-04-18 20:09:23,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:09:23,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 20:09:23,262 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:09:23,267 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:09:23,453 INFO L259 McrAutomatonBuilder]: Finished intersection with 973 states and 3121 transitions. [2020-04-18 20:09:23,453 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:09:23,937 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 36 times. [2020-04-18 20:09:23,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-04-18 20:09:23,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2020-04-18 20:09:23,938 INFO L87 Difference]: Start difference. First operand 2771 states. Second operand 19 states. [2020-04-18 20:09:24,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:09:24,489 INFO L93 Difference]: Finished difference Result 3179 states and 11521 transitions. [2020-04-18 20:09:24,490 INFO L276 IsEmpty]: Start isEmpty. Operand 3179 states and 11521 transitions. [2020-04-18 20:09:24,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-04-18 20:09:24,494 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 20:09:24,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:09:24,495 INFO L82 PathProgramCache]: Analyzing trace with hash 538879278, now seen corresponding path program 3 times [2020-04-18 20:09:24,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:09:24,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563565236] [2020-04-18 20:09:24,495 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:09:24,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:09:24,619 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 20:09:24,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563565236] [2020-04-18 20:09:24,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:09:24,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 20:09:24,620 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:09:24,625 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:09:24,789 INFO L259 McrAutomatonBuilder]: Finished intersection with 847 states and 2713 transitions. [2020-04-18 20:09:24,789 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:09:25,080 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 31 times. [2020-04-18 20:09:25,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-04-18 20:09:25,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=1201, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 20:09:25,082 INFO L87 Difference]: Start difference. First operand 3179 states and 11521 transitions. Second operand 17 states. [2020-04-18 20:09:25,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:09:25,714 INFO L93 Difference]: Finished difference Result 3555 states and 12360 transitions. [2020-04-18 20:09:25,714 INFO L276 IsEmpty]: Start isEmpty. Operand 3555 states and 12360 transitions. [2020-04-18 20:09:25,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-04-18 20:09:25,719 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 20:09:25,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:09:25,720 INFO L82 PathProgramCache]: Analyzing trace with hash -777470480, now seen corresponding path program 4 times [2020-04-18 20:09:25,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:09:25,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618299652] [2020-04-18 20:09:25,720 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:09:25,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:09:25,830 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 20:09:25,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618299652] [2020-04-18 20:09:25,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:09:25,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 20:09:25,831 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:09:25,837 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:09:26,001 INFO L259 McrAutomatonBuilder]: Finished intersection with 635 states and 1918 transitions. [2020-04-18 20:09:26,002 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:09:26,141 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 18 times. [2020-04-18 20:09:26,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 20:09:26,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=509, Invalid=2247, Unknown=0, NotChecked=0, Total=2756 [2020-04-18 20:09:26,143 INFO L87 Difference]: Start difference. First operand 3555 states and 12360 transitions. Second operand 13 states. [2020-04-18 20:09:26,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:09:26,644 INFO L93 Difference]: Finished difference Result 4164 states and 13890 transitions. [2020-04-18 20:09:26,644 INFO L276 IsEmpty]: Start isEmpty. Operand 4164 states and 13890 transitions. [2020-04-18 20:09:26,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-04-18 20:09:26,651 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 20:09:26,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:09:26,651 INFO L82 PathProgramCache]: Analyzing trace with hash -800983916, now seen corresponding path program 5 times [2020-04-18 20:09:26,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:09:26,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921834862] [2020-04-18 20:09:26,652 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:09:26,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:09:26,762 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 20:09:26,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921834862] [2020-04-18 20:09:26,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:09:26,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 20:09:26,763 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:09:26,768 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:09:26,851 INFO L259 McrAutomatonBuilder]: Finished intersection with 428 states and 1180 transitions. [2020-04-18 20:09:26,851 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:09:27,089 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 8 times. [2020-04-18 20:09:27,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 20:09:27,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=809, Invalid=3613, Unknown=0, NotChecked=0, Total=4422 [2020-04-18 20:09:27,091 INFO L87 Difference]: Start difference. First operand 4164 states and 13890 transitions. Second operand 9 states. [2020-04-18 20:09:27,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:09:27,199 INFO L93 Difference]: Finished difference Result 4164 states and 13890 transitions. [2020-04-18 20:09:27,199 INFO L276 IsEmpty]: Start isEmpty. Operand 4164 states and 13890 transitions. [2020-04-18 20:09:27,204 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 20:09:27,205 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2064662557] [2020-04-18 20:09:27,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 20:09:27,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 20:09:27,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2064662557] [2020-04-18 20:09:27,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-04-18 20:09:27,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 20:09:27,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-04-18 20:09:27,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=970, Invalid=4000, Unknown=0, NotChecked=0, Total=4970 [2020-04-18 20:09:27,207 INFO L87 Difference]: Start difference. First operand 6387 states and 24959 transitions. Second operand 35 states. [2020-04-18 20:09:27,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:09:27,525 INFO L93 Difference]: Finished difference Result 5747 states and 22367 transitions. [2020-04-18 20:09:27,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-04-18 20:09:27,525 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 54 [2020-04-18 20:09:27,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 20:09:27,526 INFO L225 Difference]: With dead ends: 5747 [2020-04-18 20:09:27,526 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 20:09:27,528 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1857 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1376, Invalid=5266, Unknown=0, NotChecked=0, Total=6642 [2020-04-18 20:09:27,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 20:09:27,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 20:09:27,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 20:09:27,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 20:09:27,529 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 54 [2020-04-18 20:09:27,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 20:09:27,529 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 20:09:27,529 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-04-18 20:09:27,529 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 20:09:27,529 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 20:09:27,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 08:09:27 BasicIcfg [2020-04-18 20:09:27,534 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 20:09:27,537 INFO L168 Benchmark]: Toolchain (without parser) took 35493.47 ms. Allocated memory was 138.4 MB in the beginning and 1.8 GB in the end (delta: 1.7 GB). Free memory was 101.8 MB in the beginning and 990.9 MB in the end (delta: -889.2 MB). Peak memory consumption was 809.5 MB. Max. memory is 7.1 GB. [2020-04-18 20:09:27,537 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 138.4 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-04-18 20:09:27,538 INFO L168 Benchmark]: CACSL2BoogieTranslator took 730.59 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 99.9 MB in the beginning and 158.4 MB in the end (delta: -58.6 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. [2020-04-18 20:09:27,539 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.11 ms. Allocated memory is still 201.9 MB. Free memory was 158.4 MB in the beginning and 156.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-18 20:09:27,540 INFO L168 Benchmark]: Boogie Preprocessor took 29.67 ms. Allocated memory is still 201.9 MB. Free memory was 156.3 MB in the beginning and 154.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 20:09:27,540 INFO L168 Benchmark]: RCFGBuilder took 576.40 ms. Allocated memory is still 201.9 MB. Free memory was 154.3 MB in the beginning and 129.6 MB in the end (delta: 24.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. [2020-04-18 20:09:27,541 INFO L168 Benchmark]: TraceAbstraction took 34072.34 ms. Allocated memory was 201.9 MB in the beginning and 1.8 GB in the end (delta: 1.6 GB). Free memory was 129.6 MB in the beginning and 990.9 MB in the end (delta: -861.3 MB). Peak memory consumption was 774.0 MB. Max. memory is 7.1 GB. [2020-04-18 20:09:27,545 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 138.4 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 730.59 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 99.9 MB in the beginning and 158.4 MB in the end (delta: -58.6 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 57.11 ms. Allocated memory is still 201.9 MB. Free memory was 158.4 MB in the beginning and 156.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.67 ms. Allocated memory is still 201.9 MB. Free memory was 156.3 MB in the beginning and 154.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 576.40 ms. Allocated memory is still 201.9 MB. Free memory was 154.3 MB in the beginning and 129.6 MB in the end (delta: 24.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 34072.34 ms. Allocated memory was 201.9 MB in the beginning and 1.8 GB in the end (delta: 1.6 GB). Free memory was 129.6 MB in the beginning and 990.9 MB in the end (delta: -861.3 MB). Peak memory consumption was 774.0 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 5 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 33.9s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 5.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 9.8s, HoareTripleCheckerStatistics: 867 SDtfs, 2984 SDslu, 4258 SDs, 0 SdLazy, 448 SolverSat, 127 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 816 GetRequests, 622 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2113 ImplicationChecksByTransitivity, 4.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=64041occurred 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: 8.5s AutomataMinimizationTime, 7 MinimizatonAttempts, 4750 StatesRemovedByMinimization, 2 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...