/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/safe021_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 19:42:46,634 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 19:42:46,637 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 19:42:46,655 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 19:42:46,656 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 19:42:46,658 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 19:42:46,659 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 19:42:46,669 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 19:42:46,673 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 19:42:46,675 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 19:42:46,677 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 19:42:46,679 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 19:42:46,679 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 19:42:46,681 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 19:42:46,684 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 19:42:46,685 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 19:42:46,686 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 19:42:46,687 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 19:42:46,689 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 19:42:46,693 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 19:42:46,698 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 19:42:46,702 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 19:42:46,703 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 19:42:46,703 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 19:42:46,705 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 19:42:46,706 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 19:42:46,706 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 19:42:46,707 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 19:42:46,709 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 19:42:46,710 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 19:42:46,710 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 19:42:46,712 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 19:42:46,713 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 19:42:46,714 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 19:42:46,715 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 19:42:46,715 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 19:42:46,716 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 19:42:46,716 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 19:42:46,716 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 19:42:46,717 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 19:42:46,718 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 19:42:46,719 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-McrStrategy.epf [2020-04-18 19:42:46,747 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 19:42:46,747 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 19:42:46,748 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 19:42:46,748 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 19:42:46,748 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 19:42:46,749 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 19:42:46,749 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 19:42:46,749 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 19:42:46,749 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 19:42:46,749 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 19:42:46,750 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 19:42:46,750 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 19:42:46,750 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 19:42:46,750 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 19:42:46,750 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 19:42:46,751 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 19:42:46,751 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 19:42:46,751 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 19:42:46,751 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 19:42:46,752 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 19:42:46,752 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 19:42:46,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 19:42:46,752 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 19:42:46,752 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 19:42:46,752 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 19:42:46,753 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 19:42:46,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 19:42:46,753 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-04-18 19:42:46,753 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 19:42:46,753 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 19:42:46,754 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 19:42:47,019 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 19:42:47,035 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 19:42:47,038 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 19:42:47,039 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 19:42:47,040 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 19:42:47,041 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe021_tso.opt.i [2020-04-18 19:42:47,110 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c28e3de06/31f39b5522164d518993b516f31f3628/FLAG4b74c6c8c [2020-04-18 19:42:47,639 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 19:42:47,640 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe021_tso.opt.i [2020-04-18 19:42:47,666 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c28e3de06/31f39b5522164d518993b516f31f3628/FLAG4b74c6c8c [2020-04-18 19:42:47,981 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c28e3de06/31f39b5522164d518993b516f31f3628 [2020-04-18 19:42:47,991 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 19:42:48,012 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 19:42:48,013 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 19:42:48,013 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 19:42:48,017 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 19:42:48,018 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:42:47" (1/1) ... [2020-04-18 19:42:48,021 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60020494 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:42:48, skipping insertion in model container [2020-04-18 19:42:48,021 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:42:47" (1/1) ... [2020-04-18 19:42:48,029 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 19:42:48,092 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 19:42:48,572 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 19:42:48,584 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 19:42:48,639 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 19:42:48,732 INFO L208 MainTranslator]: Completed translation [2020-04-18 19:42:48,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:42:48 WrapperNode [2020-04-18 19:42:48,733 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 19:42:48,734 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 19:42:48,734 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 19:42:48,734 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 19:42:48,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:42:48" (1/1) ... [2020-04-18 19:42:48,764 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:42:48" (1/1) ... [2020-04-18 19:42:48,787 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 19:42:48,787 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 19:42:48,787 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 19:42:48,787 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 19:42:48,796 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:42:48" (1/1) ... [2020-04-18 19:42:48,796 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:42:48" (1/1) ... [2020-04-18 19:42:48,799 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:42:48" (1/1) ... [2020-04-18 19:42:48,799 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:42:48" (1/1) ... [2020-04-18 19:42:48,806 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:42:48" (1/1) ... [2020-04-18 19:42:48,808 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:42:48" (1/1) ... [2020-04-18 19:42:48,811 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:42:48" (1/1) ... [2020-04-18 19:42:48,814 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 19:42:48,815 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 19:42:48,815 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 19:42:48,815 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 19:42:48,816 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:42:48" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 19:42:48,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 19:42:48,886 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 19:42:48,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 19:42:48,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 19:42:48,886 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 19:42:48,886 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 19:42:48,887 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 19:42:48,887 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 19:42:48,887 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 19:42:48,887 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 19:42:48,887 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 19:42:48,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 19:42:48,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 19:42:48,889 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 19:42:49,240 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 19:42:49,240 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 19:42:49,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:42:49 BoogieIcfgContainer [2020-04-18 19:42:49,245 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 19:42:49,246 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 19:42:49,247 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 19:42:49,250 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 19:42:49,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 07:42:47" (1/3) ... [2020-04-18 19:42:49,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b781f34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:42:49, skipping insertion in model container [2020-04-18 19:42:49,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:42:48" (2/3) ... [2020-04-18 19:42:49,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b781f34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:42:49, skipping insertion in model container [2020-04-18 19:42:49,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:42:49" (3/3) ... [2020-04-18 19:42:49,254 INFO L109 eAbstractionObserver]: Analyzing ICFG safe021_tso.opt.i [2020-04-18 19:42:49,265 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 19:42:49,265 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 19:42:49,271 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 19:42:49,272 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 19:42:49,312 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:42:49,313 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:42:49,315 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:42:49,315 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:42:49,316 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:42:49,316 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:42:49,317 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:42:49,317 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:42:49,317 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:42:49,317 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:42:49,318 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:42:49,318 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:42:49,319 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:42:49,319 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:42:49,320 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:42:49,320 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:42:49,321 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:42:49,321 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:42:49,329 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:42:49,329 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:42:49,329 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:42:49,330 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:42:49,343 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:42:49,343 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:42:49,344 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:42:49,344 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:42:49,348 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:42:49,348 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:42:49,348 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:42:49,348 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:42:49,373 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 19:42:49,390 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 19:42:49,391 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 19:42:49,391 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 19:42:49,391 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 19:42:49,391 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 19:42:49,391 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 19:42:49,392 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 19:42:49,392 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 19:42:49,405 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 19:42:49,914 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 8472 states. [2020-04-18 19:42:49,917 INFO L276 IsEmpty]: Start isEmpty. Operand 8472 states. [2020-04-18 19:42:49,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-04-18 19:42:49,945 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:42:49,946 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:42:49,947 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:42:49,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:42:49,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1121550976, now seen corresponding path program 1 times [2020-04-18 19:42:49,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:42:49,962 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1487551330] [2020-04-18 19:42:49,979 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:42:49,995 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 36 transitions. [2020-04-18 19:42:49,997 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-04-18 19:42:49,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-04-18 19:42:49,998 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:42:49,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:42:49,999 INFO L82 PathProgramCache]: Analyzing trace with hash -1121550976, now seen corresponding path program 2 times [2020-04-18 19:42:50,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:42:50,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710710598] [2020-04-18 19:42:50,003 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:42:50,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:42:50,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:42:50,527 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710710598] [2020-04-18 19:42:50,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:42:50,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:42:50,529 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:42:50,533 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:42:50,541 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 36 transitions. [2020-04-18 19:42:50,541 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:42:50,607 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:42:50,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:42:50,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 19:42:50,614 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 6 states. [2020-04-18 19:42:50,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:42:50,741 INFO L93 Difference]: Finished difference Result 37 states and 36 transitions. [2020-04-18 19:42:50,742 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 36 transitions. [2020-04-18 19:42:50,742 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:42:50,743 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1487551330] [2020-04-18 19:42:50,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:42:50,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 19:42:50,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1487551330] [2020-04-18 19:42:50,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 19:42:50,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:42:50,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:42:50,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-04-18 19:42:50,753 INFO L87 Difference]: Start difference. First operand 8472 states. Second operand 6 states. [2020-04-18 19:42:51,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:42:51,232 INFO L93 Difference]: Finished difference Result 19746 states and 68130 transitions. [2020-04-18 19:42:51,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 19:42:51,234 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-04-18 19:42:51,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:42:51,321 INFO L225 Difference]: With dead ends: 19746 [2020-04-18 19:42:51,321 INFO L226 Difference]: Without dead ends: 6391 [2020-04-18 19:42:51,325 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-04-18 19:42:51,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6391 states. [2020-04-18 19:42:51,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6391 to 5311. [2020-04-18 19:42:51,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5311 states. [2020-04-18 19:42:51,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5311 states to 5311 states and 17983 transitions. [2020-04-18 19:42:51,797 INFO L78 Accepts]: Start accepts. Automaton has 5311 states and 17983 transitions. Word has length 36 [2020-04-18 19:42:51,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:42:51,800 INFO L479 AbstractCegarLoop]: Abstraction has 5311 states and 17983 transitions. [2020-04-18 19:42:51,803 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 19:42:51,803 INFO L276 IsEmpty]: Start isEmpty. Operand 5311 states and 17983 transitions. [2020-04-18 19:42:51,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 19:42:51,821 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:42:51,829 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:42:51,830 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:42:51,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:42:51,831 INFO L82 PathProgramCache]: Analyzing trace with hash -431346913, now seen corresponding path program 1 times [2020-04-18 19:42:51,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:42:51,832 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2126491193] [2020-04-18 19:42:51,833 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:42:51,835 INFO L259 McrAutomatonBuilder]: Finished intersection with 71 states and 102 transitions. [2020-04-18 19:42:51,838 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states. [2020-04-18 19:42:51,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 19:42:51,840 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:42:51,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:42:51,841 INFO L82 PathProgramCache]: Analyzing trace with hash -431346913, now seen corresponding path program 2 times [2020-04-18 19:42:51,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:42:51,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809558601] [2020-04-18 19:42:51,842 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:42:51,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:42:52,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:42:52,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809558601] [2020-04-18 19:42:52,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:42:52,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:42:52,035 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:42:52,039 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:42:52,045 INFO L259 McrAutomatonBuilder]: Finished intersection with 59 states and 78 transitions. [2020-04-18 19:42:52,045 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:42:52,087 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:42:52,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:42:52,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 19:42:52,088 INFO L87 Difference]: Start difference. First operand 71 states. Second operand 6 states. [2020-04-18 19:42:52,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:42:52,155 INFO L93 Difference]: Finished difference Result 71 states and 102 transitions. [2020-04-18 19:42:52,156 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 102 transitions. [2020-04-18 19:42:52,157 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:42:52,158 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2126491193] [2020-04-18 19:42:52,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:42:52,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 19:42:52,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2126491193] [2020-04-18 19:42:52,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 19:42:52,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:42:52,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:42:52,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-04-18 19:42:52,161 INFO L87 Difference]: Start difference. First operand 5311 states and 17983 transitions. Second operand 6 states. [2020-04-18 19:42:52,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:42:52,342 INFO L93 Difference]: Finished difference Result 5871 states and 19716 transitions. [2020-04-18 19:42:52,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 19:42:52,343 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-04-18 19:42:52,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:42:52,382 INFO L225 Difference]: With dead ends: 5871 [2020-04-18 19:42:52,382 INFO L226 Difference]: Without dead ends: 4891 [2020-04-18 19:42:52,399 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-04-18 19:42:52,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4891 states. [2020-04-18 19:42:52,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4891 to 4531. [2020-04-18 19:42:52,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4531 states. [2020-04-18 19:42:52,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4531 states to 4531 states and 15289 transitions. [2020-04-18 19:42:52,663 INFO L78 Accepts]: Start accepts. Automaton has 4531 states and 15289 transitions. Word has length 38 [2020-04-18 19:42:52,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:42:52,664 INFO L479 AbstractCegarLoop]: Abstraction has 4531 states and 15289 transitions. [2020-04-18 19:42:52,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 19:42:52,664 INFO L276 IsEmpty]: Start isEmpty. Operand 4531 states and 15289 transitions. [2020-04-18 19:42:52,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 19:42:52,673 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:42:52,674 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:42:52,674 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:42:52,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:42:52,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1576932841, now seen corresponding path program 1 times [2020-04-18 19:42:52,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:42:52,677 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1317565229] [2020-04-18 19:42:52,678 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:42:52,680 INFO L259 McrAutomatonBuilder]: Finished intersection with 63 states and 86 transitions. [2020-04-18 19:42:52,682 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states. [2020-04-18 19:42:52,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 19:42:52,682 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:42:52,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:42:52,683 INFO L82 PathProgramCache]: Analyzing trace with hash -687974097, now seen corresponding path program 2 times [2020-04-18 19:42:52,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:42:52,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008288613] [2020-04-18 19:42:52,684 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:42:52,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:42:52,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:42:52,891 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008288613] [2020-04-18 19:42:52,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:42:52,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:42:52,892 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:42:52,896 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:42:52,901 INFO L259 McrAutomatonBuilder]: Finished intersection with 56 states and 72 transitions. [2020-04-18 19:42:52,902 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:42:52,974 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 19:42:52,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:42:52,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:42:52,975 INFO L87 Difference]: Start difference. First operand 63 states. Second operand 7 states. [2020-04-18 19:42:53,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:42:53,110 INFO L93 Difference]: Finished difference Result 69 states and 91 transitions. [2020-04-18 19:42:53,110 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 91 transitions. [2020-04-18 19:42:53,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 19:42:53,111 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:42:53,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:42:53,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1576932841, now seen corresponding path program 3 times [2020-04-18 19:42:53,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:42:53,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11699568] [2020-04-18 19:42:53,112 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:42:53,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:42:53,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:42:53,231 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11699568] [2020-04-18 19:42:53,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:42:53,232 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:42:53,232 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:42:53,235 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:42:53,240 INFO L259 McrAutomatonBuilder]: Finished intersection with 51 states and 62 transitions. [2020-04-18 19:42:53,241 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:42:53,349 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 19:42:53,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 19:42:53,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-04-18 19:42:53,351 INFO L87 Difference]: Start difference. First operand 69 states and 91 transitions. Second operand 11 states. [2020-04-18 19:42:53,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:42:53,432 INFO L93 Difference]: Finished difference Result 69 states and 91 transitions. [2020-04-18 19:42:53,433 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 91 transitions. [2020-04-18 19:42:53,433 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:42:53,433 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1317565229] [2020-04-18 19:42:53,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:42:53,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:42:53,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1317565229] [2020-04-18 19:42:53,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-04-18 19:42:53,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:42:53,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 19:42:53,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=263, Unknown=0, NotChecked=0, Total=380 [2020-04-18 19:42:53,435 INFO L87 Difference]: Start difference. First operand 4531 states and 15289 transitions. Second operand 12 states. [2020-04-18 19:42:53,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:42:53,754 INFO L93 Difference]: Finished difference Result 6459 states and 21400 transitions. [2020-04-18 19:42:54,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-04-18 19:42:54,226 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 38 [2020-04-18 19:42:54,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:42:54,279 INFO L225 Difference]: With dead ends: 6459 [2020-04-18 19:42:54,279 INFO L226 Difference]: Without dead ends: 4951 [2020-04-18 19:42:54,281 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2020-04-18 19:42:54,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4951 states. [2020-04-18 19:42:54,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4951 to 4351. [2020-04-18 19:42:54,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4351 states. [2020-04-18 19:42:54,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4351 states to 4351 states and 14605 transitions. [2020-04-18 19:42:54,455 INFO L78 Accepts]: Start accepts. Automaton has 4351 states and 14605 transitions. Word has length 38 [2020-04-18 19:42:54,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:42:54,455 INFO L479 AbstractCegarLoop]: Abstraction has 4351 states and 14605 transitions. [2020-04-18 19:42:54,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-04-18 19:42:54,456 INFO L276 IsEmpty]: Start isEmpty. Operand 4351 states and 14605 transitions. [2020-04-18 19:42:54,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-04-18 19:42:54,469 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:42:54,469 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:42:54,470 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:42:54,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:42:54,470 INFO L82 PathProgramCache]: Analyzing trace with hash 284208118, now seen corresponding path program 1 times [2020-04-18 19:42:54,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:42:54,471 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1797297443] [2020-04-18 19:42:54,473 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:42:54,477 INFO L259 McrAutomatonBuilder]: Finished intersection with 149 states and 304 transitions. [2020-04-18 19:42:54,479 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states. [2020-04-18 19:42:54,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-04-18 19:42:54,479 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:42:54,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:42:54,480 INFO L82 PathProgramCache]: Analyzing trace with hash 1173166862, now seen corresponding path program 2 times [2020-04-18 19:42:54,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:42:54,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029153280] [2020-04-18 19:42:54,481 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:42:54,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:42:54,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:42:54,642 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029153280] [2020-04-18 19:42:54,642 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:42:54,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:42:54,642 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:42:54,646 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:42:54,657 INFO L259 McrAutomatonBuilder]: Finished intersection with 92 states and 154 transitions. [2020-04-18 19:42:54,658 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:42:54,697 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 19:42:54,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:42:54,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 19:42:54,698 INFO L87 Difference]: Start difference. First operand 149 states. Second operand 6 states. [2020-04-18 19:42:54,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:42:54,801 INFO L93 Difference]: Finished difference Result 167 states and 331 transitions. [2020-04-18 19:42:54,801 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 331 transitions. [2020-04-18 19:42:54,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-04-18 19:42:54,802 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:42:54,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:42:54,802 INFO L82 PathProgramCache]: Analyzing trace with hash 284208118, now seen corresponding path program 3 times [2020-04-18 19:42:54,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:42:54,803 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477994228] [2020-04-18 19:42:54,803 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:42:54,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:42:54,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:42:54,937 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477994228] [2020-04-18 19:42:54,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:42:54,937 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:42:54,938 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:42:54,942 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:42:54,953 INFO L259 McrAutomatonBuilder]: Finished intersection with 101 states and 184 transitions. [2020-04-18 19:42:54,953 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:42:55,181 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 16 times. [2020-04-18 19:42:55,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 19:42:55,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2020-04-18 19:42:55,182 INFO L87 Difference]: Start difference. First operand 167 states and 331 transitions. Second operand 16 states. [2020-04-18 19:42:55,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:42:55,731 INFO L93 Difference]: Finished difference Result 185 states and 358 transitions. [2020-04-18 19:42:55,731 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 358 transitions. [2020-04-18 19:42:55,731 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:42:55,732 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1797297443] [2020-04-18 19:42:55,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:42:55,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:42:55,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1797297443] [2020-04-18 19:42:55,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-04-18 19:42:55,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:42:55,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-04-18 19:42:55,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=318, Invalid=942, Unknown=0, NotChecked=0, Total=1260 [2020-04-18 19:42:55,734 INFO L87 Difference]: Start difference. First operand 4351 states and 14605 transitions. Second operand 17 states. [2020-04-18 19:42:55,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:42:55,976 INFO L93 Difference]: Finished difference Result 6333 states and 20940 transitions. [2020-04-18 19:42:55,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-04-18 19:42:55,976 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 40 [2020-04-18 19:42:55,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:42:55,989 INFO L225 Difference]: With dead ends: 6333 [2020-04-18 19:42:55,989 INFO L226 Difference]: Without dead ends: 3338 [2020-04-18 19:42:55,990 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=433, Invalid=1127, Unknown=0, NotChecked=0, Total=1560 [2020-04-18 19:42:56,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3338 states. [2020-04-18 19:42:56,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3338 to 2858. [2020-04-18 19:42:56,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2858 states. [2020-04-18 19:42:56,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2858 states to 2858 states and 9228 transitions. [2020-04-18 19:42:56,075 INFO L78 Accepts]: Start accepts. Automaton has 2858 states and 9228 transitions. Word has length 40 [2020-04-18 19:42:56,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:42:56,076 INFO L479 AbstractCegarLoop]: Abstraction has 2858 states and 9228 transitions. [2020-04-18 19:42:56,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-04-18 19:42:56,076 INFO L276 IsEmpty]: Start isEmpty. Operand 2858 states and 9228 transitions. [2020-04-18 19:42:56,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 19:42:56,082 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:42:56,083 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:42:56,083 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:42:56,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:42:56,083 INFO L82 PathProgramCache]: Analyzing trace with hash -56529516, now seen corresponding path program 1 times [2020-04-18 19:42:56,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:42:56,084 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1538588310] [2020-04-18 19:42:56,085 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:42:56,089 INFO L259 McrAutomatonBuilder]: Finished intersection with 192 states and 413 transitions. [2020-04-18 19:42:56,090 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states. [2020-04-18 19:42:56,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 19:42:56,091 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:42:56,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:42:56,092 INFO L82 PathProgramCache]: Analyzing trace with hash 832429228, now seen corresponding path program 2 times [2020-04-18 19:42:56,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:42:56,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263164235] [2020-04-18 19:42:56,093 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:42:56,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:42:56,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:42:56,187 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263164235] [2020-04-18 19:42:56,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:42:56,188 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:42:56,188 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:42:56,192 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:42:56,206 INFO L259 McrAutomatonBuilder]: Finished intersection with 122 states and 225 transitions. [2020-04-18 19:42:56,206 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:42:56,315 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 13 times. [2020-04-18 19:42:56,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:42:56,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-04-18 19:42:56,316 INFO L87 Difference]: Start difference. First operand 192 states. Second operand 8 states. [2020-04-18 19:42:56,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:42:56,443 INFO L93 Difference]: Finished difference Result 216 states and 451 transitions. [2020-04-18 19:42:56,443 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 451 transitions. [2020-04-18 19:42:56,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 19:42:56,444 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:42:56,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:42:56,444 INFO L82 PathProgramCache]: Analyzing trace with hash -56529516, now seen corresponding path program 3 times [2020-04-18 19:42:56,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:42:56,445 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982074516] [2020-04-18 19:42:56,445 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:42:56,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:42:56,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:42:56,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982074516] [2020-04-18 19:42:56,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:42:56,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:42:56,598 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:42:56,605 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:42:56,622 INFO L259 McrAutomatonBuilder]: Finished intersection with 105 states and 185 transitions. [2020-04-18 19:42:56,623 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:42:56,797 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 16 times. [2020-04-18 19:42:56,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:42:56,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2020-04-18 19:42:56,798 INFO L87 Difference]: Start difference. First operand 216 states and 451 transitions. Second operand 6 states. [2020-04-18 19:42:56,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:42:56,881 INFO L93 Difference]: Finished difference Result 216 states and 451 transitions. [2020-04-18 19:42:56,881 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 451 transitions. [2020-04-18 19:42:56,882 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:42:56,882 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1538588310] [2020-04-18 19:42:56,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:42:56,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 19:42:56,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1538588310] [2020-04-18 19:42:56,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-04-18 19:42:56,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:42:56,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 19:42:56,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2020-04-18 19:42:56,885 INFO L87 Difference]: Start difference. First operand 2858 states and 9228 transitions. Second operand 12 states. [2020-04-18 19:42:57,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:42:57,507 INFO L93 Difference]: Finished difference Result 4053 states and 12840 transitions. [2020-04-18 19:42:57,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-04-18 19:42:57,507 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 41 [2020-04-18 19:42:57,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:42:57,518 INFO L225 Difference]: With dead ends: 4053 [2020-04-18 19:42:57,518 INFO L226 Difference]: Without dead ends: 3037 [2020-04-18 19:42:57,520 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=251, Invalid=939, Unknown=0, NotChecked=0, Total=1190 [2020-04-18 19:42:57,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3037 states. [2020-04-18 19:42:57,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3037 to 2605. [2020-04-18 19:42:57,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2605 states. [2020-04-18 19:42:57,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2605 states to 2605 states and 8281 transitions. [2020-04-18 19:42:57,599 INFO L78 Accepts]: Start accepts. Automaton has 2605 states and 8281 transitions. Word has length 41 [2020-04-18 19:42:57,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:42:57,600 INFO L479 AbstractCegarLoop]: Abstraction has 2605 states and 8281 transitions. [2020-04-18 19:42:57,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-04-18 19:42:57,600 INFO L276 IsEmpty]: Start isEmpty. Operand 2605 states and 8281 transitions. [2020-04-18 19:42:57,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 19:42:57,606 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:42:57,606 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:42:57,606 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:42:57,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:42:57,607 INFO L82 PathProgramCache]: Analyzing trace with hash 1759947093, now seen corresponding path program 1 times [2020-04-18 19:42:57,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:42:57,608 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [341587374] [2020-04-18 19:42:57,609 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:42:57,614 INFO L259 McrAutomatonBuilder]: Finished intersection with 235 states and 522 transitions. [2020-04-18 19:42:57,616 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states. [2020-04-18 19:42:57,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 19:42:57,617 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:42:57,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:42:57,617 INFO L82 PathProgramCache]: Analyzing trace with hash -1646061459, now seen corresponding path program 2 times [2020-04-18 19:42:57,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:42:57,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963431633] [2020-04-18 19:42:57,618 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:42:57,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:42:57,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:42:57,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963431633] [2020-04-18 19:42:57,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:42:57,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:42:57,739 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:42:57,742 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:42:57,752 INFO L259 McrAutomatonBuilder]: Finished intersection with 88 states and 136 transitions. [2020-04-18 19:42:57,752 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:42:57,832 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 9 times. [2020-04-18 19:42:57,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:42:57,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-04-18 19:42:57,833 INFO L87 Difference]: Start difference. First operand 235 states. Second operand 8 states. [2020-04-18 19:42:57,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:42:57,978 INFO L93 Difference]: Finished difference Result 265 states and 571 transitions. [2020-04-18 19:42:57,978 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 571 transitions. [2020-04-18 19:42:57,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 19:42:57,979 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:42:57,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:42:57,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1759947093, now seen corresponding path program 3 times [2020-04-18 19:42:57,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:42:57,980 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785815583] [2020-04-18 19:42:57,980 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:42:57,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:42:58,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:42:58,062 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785815583] [2020-04-18 19:42:58,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:42:58,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:42:58,063 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:42:58,066 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:42:58,076 INFO L259 McrAutomatonBuilder]: Finished intersection with 85 states and 131 transitions. [2020-04-18 19:42:58,076 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:42:58,194 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 9 times. [2020-04-18 19:42:58,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:42:58,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2020-04-18 19:42:58,195 INFO L87 Difference]: Start difference. First operand 265 states and 571 transitions. Second operand 8 states. [2020-04-18 19:42:58,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:42:58,376 INFO L93 Difference]: Finished difference Result 265 states and 571 transitions. [2020-04-18 19:42:58,376 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 571 transitions. [2020-04-18 19:42:58,377 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:42:58,377 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [341587374] [2020-04-18 19:42:58,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:42:58,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:42:58,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [341587374] [2020-04-18 19:42:58,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-04-18 19:42:58,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:42:58,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-18 19:42:58,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=481, Unknown=0, NotChecked=0, Total=600 [2020-04-18 19:42:58,379 INFO L87 Difference]: Start difference. First operand 2605 states and 8281 transitions. Second operand 14 states. [2020-04-18 19:42:58,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:42:58,974 INFO L93 Difference]: Finished difference Result 2941 states and 9021 transitions. [2020-04-18 19:42:58,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-04-18 19:42:58,975 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 42 [2020-04-18 19:42:58,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:42:58,982 INFO L225 Difference]: With dead ends: 2941 [2020-04-18 19:42:58,983 INFO L226 Difference]: Without dead ends: 2089 [2020-04-18 19:42:58,984 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=328, Invalid=1394, Unknown=0, NotChecked=0, Total=1722 [2020-04-18 19:42:58,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2089 states. [2020-04-18 19:42:59,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2089 to 1873. [2020-04-18 19:42:59,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1873 states. [2020-04-18 19:42:59,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1873 states to 1873 states and 5672 transitions. [2020-04-18 19:42:59,036 INFO L78 Accepts]: Start accepts. Automaton has 1873 states and 5672 transitions. Word has length 42 [2020-04-18 19:42:59,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:42:59,037 INFO L479 AbstractCegarLoop]: Abstraction has 1873 states and 5672 transitions. [2020-04-18 19:42:59,037 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-04-18 19:42:59,037 INFO L276 IsEmpty]: Start isEmpty. Operand 1873 states and 5672 transitions. [2020-04-18 19:42:59,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:42:59,042 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:42:59,042 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:42:59,042 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:42:59,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:42:59,043 INFO L82 PathProgramCache]: Analyzing trace with hash -560928260, now seen corresponding path program 1 times [2020-04-18 19:42:59,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:42:59,043 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1891917032] [2020-04-18 19:42:59,045 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:42:59,053 INFO L259 McrAutomatonBuilder]: Finished intersection with 365 states and 876 transitions. [2020-04-18 19:42:59,056 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states. [2020-04-18 19:42:59,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:42:59,058 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:42:59,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:42:59,058 INFO L82 PathProgramCache]: Analyzing trace with hash 1071017390, now seen corresponding path program 2 times [2020-04-18 19:42:59,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:42:59,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481016178] [2020-04-18 19:42:59,059 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:42:59,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:42:59,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:42:59,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481016178] [2020-04-18 19:42:59,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:42:59,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:42:59,166 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:42:59,170 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:42:59,183 INFO L259 McrAutomatonBuilder]: Finished intersection with 100 states and 158 transitions. [2020-04-18 19:42:59,183 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:42:59,247 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 13 times. [2020-04-18 19:42:59,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:42:59,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-04-18 19:42:59,248 INFO L87 Difference]: Start difference. First operand 365 states. Second operand 8 states. [2020-04-18 19:42:59,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:42:59,381 INFO L93 Difference]: Finished difference Result 455 states and 1083 transitions. [2020-04-18 19:42:59,381 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 1083 transitions. [2020-04-18 19:42:59,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:42:59,382 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:42:59,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:42:59,383 INFO L82 PathProgramCache]: Analyzing trace with hash -2004345514, now seen corresponding path program 3 times [2020-04-18 19:42:59,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:42:59,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460892435] [2020-04-18 19:42:59,383 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:42:59,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:42:59,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:42:59,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460892435] [2020-04-18 19:42:59,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:42:59,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:42:59,491 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:42:59,495 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:42:59,508 INFO L259 McrAutomatonBuilder]: Finished intersection with 105 states and 170 transitions. [2020-04-18 19:42:59,508 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:42:59,618 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 9 times. [2020-04-18 19:42:59,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:42:59,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2020-04-18 19:42:59,619 INFO L87 Difference]: Start difference. First operand 455 states and 1083 transitions. Second operand 8 states. [2020-04-18 19:42:59,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:42:59,905 INFO L93 Difference]: Finished difference Result 455 states and 1083 transitions. [2020-04-18 19:42:59,905 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 1083 transitions. [2020-04-18 19:42:59,906 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:42:59,906 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1891917032] [2020-04-18 19:42:59,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:42:59,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:42:59,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1891917032] [2020-04-18 19:42:59,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-04-18 19:42:59,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:42:59,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-18 19:42:59,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=567, Unknown=0, NotChecked=0, Total=702 [2020-04-18 19:42:59,909 INFO L87 Difference]: Start difference. First operand 1873 states and 5672 transitions. Second operand 14 states. [2020-04-18 19:43:00,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:43:00,414 INFO L93 Difference]: Finished difference Result 1648 states and 4796 transitions. [2020-04-18 19:43:00,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-04-18 19:43:00,414 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 44 [2020-04-18 19:43:00,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:43:00,419 INFO L225 Difference]: With dead ends: 1648 [2020-04-18 19:43:00,419 INFO L226 Difference]: Without dead ends: 841 [2020-04-18 19:43:00,420 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=259, Invalid=1223, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 19:43:00,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2020-04-18 19:43:00,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 827. [2020-04-18 19:43:00,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 827 states. [2020-04-18 19:43:00,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 2281 transitions. [2020-04-18 19:43:00,439 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 2281 transitions. Word has length 44 [2020-04-18 19:43:00,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:43:00,439 INFO L479 AbstractCegarLoop]: Abstraction has 827 states and 2281 transitions. [2020-04-18 19:43:00,439 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-04-18 19:43:00,439 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 2281 transitions. [2020-04-18 19:43:00,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 19:43:00,441 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:43:00,441 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] [2020-04-18 19:43:00,442 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:43:00,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:43:00,442 INFO L82 PathProgramCache]: Analyzing trace with hash -1980009150, now seen corresponding path program 1 times [2020-04-18 19:43:00,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:43:00,442 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [447776318] [2020-04-18 19:43:00,444 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:43:00,484 INFO L259 McrAutomatonBuilder]: Finished intersection with 1761 states and 5712 transitions. [2020-04-18 19:43:00,498 INFO L276 IsEmpty]: Start isEmpty. Operand 1761 states. [2020-04-18 19:43:00,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 19:43:00,504 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:43:00,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:43:00,504 INFO L82 PathProgramCache]: Analyzing trace with hash -274657862, now seen corresponding path program 2 times [2020-04-18 19:43:00,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:43:00,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749304610] [2020-04-18 19:43:00,505 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:43:00,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:43:00,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:43:00,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749304610] [2020-04-18 19:43:00,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:43:00,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:43:00,595 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:43:00,599 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:43:00,632 INFO L259 McrAutomatonBuilder]: Finished intersection with 244 states and 526 transitions. [2020-04-18 19:43:00,632 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:43:00,699 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 7 times. [2020-04-18 19:43:00,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:43:00,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-04-18 19:43:00,700 INFO L87 Difference]: Start difference. First operand 1761 states. Second operand 8 states. [2020-04-18 19:43:00,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:43:00,979 INFO L93 Difference]: Finished difference Result 2721 states and 8590 transitions. [2020-04-18 19:43:00,979 INFO L276 IsEmpty]: Start isEmpty. Operand 2721 states and 8590 transitions. [2020-04-18 19:43:00,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 19:43:00,986 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:43:00,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:43:00,986 INFO L82 PathProgramCache]: Analyzing trace with hash -1435952446, now seen corresponding path program 3 times [2020-04-18 19:43:00,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:43:00,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141460360] [2020-04-18 19:43:00,987 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:43:01,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:43:01,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:43:01,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141460360] [2020-04-18 19:43:01,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:43:01,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:43:01,091 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:43:01,095 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:43:01,134 INFO L259 McrAutomatonBuilder]: Finished intersection with 261 states and 564 transitions. [2020-04-18 19:43:01,134 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:43:01,290 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 13 times. [2020-04-18 19:43:01,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 19:43:01,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2020-04-18 19:43:01,291 INFO L87 Difference]: Start difference. First operand 2721 states and 8590 transitions. Second operand 13 states. [2020-04-18 19:43:02,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:43:02,019 INFO L93 Difference]: Finished difference Result 4265 states and 13122 transitions. [2020-04-18 19:43:02,019 INFO L276 IsEmpty]: Start isEmpty. Operand 4265 states and 13122 transitions. [2020-04-18 19:43:02,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 19:43:02,029 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:43:02,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:43:02,030 INFO L82 PathProgramCache]: Analyzing trace with hash -1391111264, now seen corresponding path program 4 times [2020-04-18 19:43:02,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:43:02,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870596899] [2020-04-18 19:43:02,031 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:43:02,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:43:02,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:43:02,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870596899] [2020-04-18 19:43:02,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:43:02,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:43:02,119 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:43:02,126 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:43:02,167 INFO L259 McrAutomatonBuilder]: Finished intersection with 249 states and 539 transitions. [2020-04-18 19:43:02,167 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:43:02,311 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 19:43:02,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:43:02,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=285, Invalid=1121, Unknown=0, NotChecked=0, Total=1406 [2020-04-18 19:43:02,312 INFO L87 Difference]: Start difference. First operand 4265 states and 13122 transitions. Second operand 9 states. [2020-04-18 19:43:02,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:43:02,738 INFO L93 Difference]: Finished difference Result 4295 states and 13149 transitions. [2020-04-18 19:43:02,738 INFO L276 IsEmpty]: Start isEmpty. Operand 4295 states and 13149 transitions. [2020-04-18 19:43:02,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 19:43:02,747 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 19:43:02,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:43:02,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1919969300, now seen corresponding path program 5 times [2020-04-18 19:43:02,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:43:02,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631860501] [2020-04-18 19:43:02,748 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:43:02,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:43:02,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:43:02,844 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631860501] [2020-04-18 19:43:02,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:43:02,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:43:02,844 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:43:02,849 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:43:02,900 INFO L259 McrAutomatonBuilder]: Finished intersection with 345 states and 804 transitions. [2020-04-18 19:43:02,900 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:43:03,029 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 33 times. [2020-04-18 19:43:03,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 19:43:03,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=469, Invalid=2183, Unknown=0, NotChecked=0, Total=2652 [2020-04-18 19:43:03,031 INFO L87 Difference]: Start difference. First operand 4295 states and 13149 transitions. Second operand 11 states. [2020-04-18 19:43:03,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:43:03,474 INFO L93 Difference]: Finished difference Result 5211 states and 15595 transitions. [2020-04-18 19:43:03,474 INFO L276 IsEmpty]: Start isEmpty. Operand 5211 states and 15595 transitions. [2020-04-18 19:43:03,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 19:43:03,482 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 19:43:03,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:43:03,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1809221374, now seen corresponding path program 6 times [2020-04-18 19:43:03,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:43:03,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516908676] [2020-04-18 19:43:03,483 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:43:03,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:43:03,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:43:03,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516908676] [2020-04-18 19:43:03,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:43:03,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:43:03,595 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:43:03,602 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:43:03,785 INFO L259 McrAutomatonBuilder]: Finished intersection with 519 states and 1378 transitions. [2020-04-18 19:43:03,786 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:43:04,175 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 69 times. [2020-04-18 19:43:04,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-04-18 19:43:04,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=907, Invalid=3785, Unknown=0, NotChecked=0, Total=4692 [2020-04-18 19:43:04,178 INFO L87 Difference]: Start difference. First operand 5211 states and 15595 transitions. Second operand 20 states. [2020-04-18 19:43:05,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:43:05,675 INFO L93 Difference]: Finished difference Result 8019 states and 23231 transitions. [2020-04-18 19:43:05,675 INFO L276 IsEmpty]: Start isEmpty. Operand 8019 states and 23231 transitions. [2020-04-18 19:43:05,690 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:43:05,691 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [447776318] [2020-04-18 19:43:05,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:43:05,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 19:43:05,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [447776318] [2020-04-18 19:43:05,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-04-18 19:43:05,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:43:05,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-04-18 19:43:05,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1553, Invalid=5929, Unknown=0, NotChecked=0, Total=7482 [2020-04-18 19:43:05,695 INFO L87 Difference]: Start difference. First operand 827 states and 2281 transitions. Second operand 37 states. [2020-04-18 19:43:06,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:43:06,474 INFO L93 Difference]: Finished difference Result 787 states and 2152 transitions. [2020-04-18 19:43:06,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-04-18 19:43:06,475 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 48 [2020-04-18 19:43:06,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:43:06,475 INFO L225 Difference]: With dead ends: 787 [2020-04-18 19:43:06,476 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 19:43:06,478 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 401 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3492 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2190, Invalid=8316, Unknown=0, NotChecked=0, Total=10506 [2020-04-18 19:43:06,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 19:43:06,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 19:43:06,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 19:43:06,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 19:43:06,479 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48 [2020-04-18 19:43:06,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:43:06,479 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 19:43:06,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-04-18 19:43:06,479 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 19:43:06,479 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:43:06,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 07:43:06 BasicIcfg [2020-04-18 19:43:06,483 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 19:43:06,486 INFO L168 Benchmark]: Toolchain (without parser) took 18493.04 ms. Allocated memory was 145.8 MB in the beginning and 642.8 MB in the end (delta: 497.0 MB). Free memory was 102.2 MB in the beginning and 89.2 MB in the end (delta: 13.0 MB). Peak memory consumption was 510.0 MB. Max. memory is 7.1 GB. [2020-04-18 19:43:06,487 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 145.8 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-18 19:43:06,487 INFO L168 Benchmark]: CACSL2BoogieTranslator took 720.54 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 100.2 MB in the beginning and 160.2 MB in the end (delta: -60.0 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. [2020-04-18 19:43:06,488 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.74 ms. Allocated memory is still 203.4 MB. Free memory was 160.2 MB in the beginning and 158.0 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2020-04-18 19:43:06,489 INFO L168 Benchmark]: Boogie Preprocessor took 27.11 ms. Allocated memory is still 203.4 MB. Free memory was 158.0 MB in the beginning and 156.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-18 19:43:06,489 INFO L168 Benchmark]: RCFGBuilder took 430.71 ms. Allocated memory is still 203.4 MB. Free memory was 156.0 MB in the beginning and 134.2 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. [2020-04-18 19:43:06,490 INFO L168 Benchmark]: TraceAbstraction took 17237.11 ms. Allocated memory was 203.4 MB in the beginning and 642.8 MB in the end (delta: 439.4 MB). Free memory was 133.5 MB in the beginning and 89.2 MB in the end (delta: 44.3 MB). Peak memory consumption was 483.6 MB. Max. memory is 7.1 GB. [2020-04-18 19:43:06,493 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 145.8 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 720.54 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 100.2 MB in the beginning and 160.2 MB in the end (delta: -60.0 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 52.74 ms. Allocated memory is still 203.4 MB. Free memory was 160.2 MB in the beginning and 158.0 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.11 ms. Allocated memory is still 203.4 MB. Free memory was 158.0 MB in the beginning and 156.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 430.71 ms. Allocated memory is still 203.4 MB. Free memory was 156.0 MB in the beginning and 134.2 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 17237.11 ms. Allocated memory was 203.4 MB in the beginning and 642.8 MB in the end (delta: 439.4 MB). Free memory was 133.5 MB in the beginning and 89.2 MB in the end (delta: 44.3 MB). Peak memory consumption was 483.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 17.0s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 4.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.5s, HoareTripleCheckerStatistics: 794 SDtfs, 3179 SDslu, 4684 SDs, 0 SdLazy, 963 SolverSat, 361 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1223 GetRequests, 934 SyntacticMatches, 0 SemanticMatches, 289 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4949 ImplicationChecksByTransitivity, 6.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8472occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 3182 StatesRemovedByMinimization, 7 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...