/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/safe032_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 20:00:42,759 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 20:00:42,762 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 20:00:42,773 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 20:00:42,773 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 20:00:42,774 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 20:00:42,776 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 20:00:42,777 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 20:00:42,779 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 20:00:42,780 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 20:00:42,781 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 20:00:42,782 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 20:00:42,782 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 20:00:42,783 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 20:00:42,784 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 20:00:42,785 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 20:00:42,786 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 20:00:42,787 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 20:00:42,789 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 20:00:42,791 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 20:00:42,792 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 20:00:42,793 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 20:00:42,794 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 20:00:42,795 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 20:00:42,797 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 20:00:42,797 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 20:00:42,798 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 20:00:42,798 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 20:00:42,799 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 20:00:42,800 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 20:00:42,800 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 20:00:42,801 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 20:00:42,802 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 20:00:42,802 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 20:00:42,803 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 20:00:42,803 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 20:00:42,804 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 20:00:42,804 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 20:00:42,805 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 20:00:42,805 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 20:00:42,806 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 20:00:42,807 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-McrStrategy.epf [2020-04-18 20:00:42,825 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 20:00:42,826 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 20:00:42,827 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 20:00:42,827 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 20:00:42,827 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 20:00:42,828 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 20:00:42,828 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 20:00:42,828 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 20:00:42,829 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 20:00:42,829 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 20:00:42,829 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 20:00:42,829 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 20:00:42,830 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 20:00:42,830 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 20:00:42,831 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 20:00:42,831 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 20:00:42,831 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 20:00:42,831 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 20:00:42,832 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 20:00:42,832 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 20:00:42,832 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 20:00:42,832 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 20:00:42,832 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 20:00:42,833 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 20:00:42,833 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 20:00:42,833 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 20:00:42,833 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 20:00:42,833 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-04-18 20:00:42,834 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 20:00:42,834 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 20:00:42,835 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 20:00:43,087 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 20:00:43,099 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 20:00:43,103 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 20:00:43,104 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 20:00:43,104 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 20:00:43,105 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe032_tso.opt.i [2020-04-18 20:00:43,166 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb6424330/b9574eb41a9e470ca394e774bdd613c1/FLAG31f8560c8 [2020-04-18 20:00:43,714 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 20:00:43,715 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe032_tso.opt.i [2020-04-18 20:00:43,730 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb6424330/b9574eb41a9e470ca394e774bdd613c1/FLAG31f8560c8 [2020-04-18 20:00:43,984 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb6424330/b9574eb41a9e470ca394e774bdd613c1 [2020-04-18 20:00:43,994 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 20:00:44,018 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 20:00:44,020 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 20:00:44,020 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 20:00:44,024 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 20:00:44,024 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 08:00:43" (1/1) ... [2020-04-18 20:00:44,027 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ee12d02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:00:44, skipping insertion in model container [2020-04-18 20:00:44,027 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 08:00:43" (1/1) ... [2020-04-18 20:00:44,036 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 20:00:44,094 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 20:00:44,549 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 20:00:44,560 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 20:00:44,609 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 20:00:44,687 INFO L208 MainTranslator]: Completed translation [2020-04-18 20:00:44,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:00:44 WrapperNode [2020-04-18 20:00:44,687 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 20:00:44,688 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 20:00:44,688 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 20:00:44,689 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 20:00:44,697 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:00:44" (1/1) ... [2020-04-18 20:00:44,723 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:00:44" (1/1) ... [2020-04-18 20:00:44,753 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 20:00:44,753 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 20:00:44,753 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 20:00:44,753 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 20:00:44,762 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:00:44" (1/1) ... [2020-04-18 20:00:44,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:00:44" (1/1) ... [2020-04-18 20:00:44,766 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:00:44" (1/1) ... [2020-04-18 20:00:44,766 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:00:44" (1/1) ... [2020-04-18 20:00:44,783 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:00:44" (1/1) ... [2020-04-18 20:00:44,786 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:00:44" (1/1) ... [2020-04-18 20:00:44,788 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:00:44" (1/1) ... [2020-04-18 20:00:44,791 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 20:00:44,792 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 20:00:44,792 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 20:00:44,792 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 20:00:44,793 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:00:44" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 20:00:44,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 20:00:44,861 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 20:00:44,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 20:00:44,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 20:00:44,862 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 20:00:44,862 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 20:00:44,862 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 20:00:44,862 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 20:00:44,863 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 20:00:44,863 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 20:00:44,863 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 20:00:44,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 20:00:44,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 20:00:44,864 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 20:00:45,220 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 20:00:45,220 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 20:00:45,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 08:00:45 BoogieIcfgContainer [2020-04-18 20:00:45,226 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 20:00:45,228 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 20:00:45,228 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 20:00:45,232 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 20:00:45,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 08:00:43" (1/3) ... [2020-04-18 20:00:45,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2feb7506 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 08:00:45, skipping insertion in model container [2020-04-18 20:00:45,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:00:44" (2/3) ... [2020-04-18 20:00:45,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2feb7506 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 08:00:45, skipping insertion in model container [2020-04-18 20:00:45,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 08:00:45" (3/3) ... [2020-04-18 20:00:45,237 INFO L109 eAbstractionObserver]: Analyzing ICFG safe032_tso.opt.i [2020-04-18 20:00:45,248 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 20:00:45,248 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 20:00:45,255 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 20:00:45,256 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 20:00:45,281 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:00:45,281 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:00:45,281 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:00:45,282 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:00:45,282 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:00:45,283 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:00:45,283 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:00:45,283 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:00:45,284 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:00:45,284 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:00:45,284 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:00:45,285 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:00:45,285 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:00:45,285 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:00:45,285 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:00:45,286 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:00:45,286 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:00:45,286 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:00:45,291 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:00:45,291 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:00:45,291 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:00:45,292 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:00:45,297 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:00:45,298 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:00:45,298 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:00:45,298 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:00:45,301 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:00:45,301 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:00:45,301 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:00:45,301 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:00:45,319 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 20:00:45,339 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 20:00:45,339 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 20:00:45,339 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 20:00:45,339 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 20:00:45,340 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 20:00:45,340 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 20:00:45,340 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 20:00:45,340 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 20:00:45,354 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 77 places, 69 transitions, 153 flow [2020-04-18 20:00:45,789 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 8471 states. [2020-04-18 20:00:45,793 INFO L276 IsEmpty]: Start isEmpty. Operand 8471 states. [2020-04-18 20:00:45,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-04-18 20:00:45,826 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 20:00:45,827 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] [2020-04-18 20:00:45,827 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 20:00:45,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:00:45,834 INFO L82 PathProgramCache]: Analyzing trace with hash 60883713, now seen corresponding path program 1 times [2020-04-18 20:00:45,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 20:00:45,841 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1899065929] [2020-04-18 20:00:45,857 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:00:45,873 INFO L259 McrAutomatonBuilder]: Finished intersection with 36 states and 35 transitions. [2020-04-18 20:00:45,876 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-04-18 20:00:45,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-04-18 20:00:45,877 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 20:00:45,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:00:45,877 INFO L82 PathProgramCache]: Analyzing trace with hash 60883713, now seen corresponding path program 2 times [2020-04-18 20:00:45,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:00:45,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574348226] [2020-04-18 20:00:45,881 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:00:46,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:00:46,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 20:00:46,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574348226] [2020-04-18 20:00:46,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:00:46,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 20:00:46,364 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:00:46,368 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:00:46,375 INFO L259 McrAutomatonBuilder]: Finished intersection with 36 states and 35 transitions. [2020-04-18 20:00:46,375 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:00:46,453 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 20:00:46,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 20:00:46,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 20:00:46,460 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 7 states. [2020-04-18 20:00:46,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:00:46,551 INFO L93 Difference]: Finished difference Result 36 states and 35 transitions. [2020-04-18 20:00:46,551 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 35 transitions. [2020-04-18 20:00:46,552 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 20:00:46,553 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1899065929] [2020-04-18 20:00:46,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 20:00:46,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 20:00:46,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1899065929] [2020-04-18 20:00:46,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 20:00:46,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 20:00:46,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 20:00:46,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-04-18 20:00:46,563 INFO L87 Difference]: Start difference. First operand 8471 states. Second operand 7 states. [2020-04-18 20:00:47,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:00:47,128 INFO L93 Difference]: Finished difference Result 15571 states and 54621 transitions. [2020-04-18 20:00:47,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 20:00:47,130 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-04-18 20:00:47,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 20:00:47,185 INFO L225 Difference]: With dead ends: 15571 [2020-04-18 20:00:47,185 INFO L226 Difference]: Without dead ends: 4260 [2020-04-18 20:00:47,187 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-04-18 20:00:47,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4260 states. [2020-04-18 20:00:47,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4260 to 3786. [2020-04-18 20:00:47,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3786 states. [2020-04-18 20:00:47,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3786 states to 3786 states and 12301 transitions. [2020-04-18 20:00:47,435 INFO L78 Accepts]: Start accepts. Automaton has 3786 states and 12301 transitions. Word has length 35 [2020-04-18 20:00:47,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 20:00:47,437 INFO L479 AbstractCegarLoop]: Abstraction has 3786 states and 12301 transitions. [2020-04-18 20:00:47,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 20:00:47,440 INFO L276 IsEmpty]: Start isEmpty. Operand 3786 states and 12301 transitions. [2020-04-18 20:00:47,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-04-18 20:00:47,500 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 20:00:47,500 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] [2020-04-18 20:00:47,500 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 20:00:47,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:00:47,501 INFO L82 PathProgramCache]: Analyzing trace with hash -513234750, now seen corresponding path program 1 times [2020-04-18 20:00:47,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 20:00:47,502 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2113237026] [2020-04-18 20:00:47,503 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:00:47,510 INFO L259 McrAutomatonBuilder]: Finished intersection with 62 states and 85 transitions. [2020-04-18 20:00:47,511 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states. [2020-04-18 20:00:47,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-04-18 20:00:47,512 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 20:00:47,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:00:47,515 INFO L82 PathProgramCache]: Analyzing trace with hash -513234750, now seen corresponding path program 2 times [2020-04-18 20:00:47,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:00:47,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606018259] [2020-04-18 20:00:47,516 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:00:47,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:00:47,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 20:00:47,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606018259] [2020-04-18 20:00:47,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:00:47,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 20:00:47,735 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:00:47,739 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:00:47,748 INFO L259 McrAutomatonBuilder]: Finished intersection with 50 states and 61 transitions. [2020-04-18 20:00:47,748 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:00:47,798 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 20:00:47,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 20:00:47,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 20:00:47,799 INFO L87 Difference]: Start difference. First operand 62 states. Second operand 7 states. [2020-04-18 20:00:47,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:00:47,861 INFO L93 Difference]: Finished difference Result 62 states and 85 transitions. [2020-04-18 20:00:47,862 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 85 transitions. [2020-04-18 20:00:47,862 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 20:00:47,862 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2113237026] [2020-04-18 20:00:47,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 20:00:47,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 20:00:47,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2113237026] [2020-04-18 20:00:47,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 20:00:47,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 20:00:47,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 20:00:47,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-04-18 20:00:47,865 INFO L87 Difference]: Start difference. First operand 3786 states and 12301 transitions. Second operand 7 states. [2020-04-18 20:00:48,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:00:48,159 INFO L93 Difference]: Finished difference Result 4892 states and 15918 transitions. [2020-04-18 20:00:48,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 20:00:48,160 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2020-04-18 20:00:48,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 20:00:48,190 INFO L225 Difference]: With dead ends: 4892 [2020-04-18 20:00:48,190 INFO L226 Difference]: Without dead ends: 3780 [2020-04-18 20:00:48,207 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-04-18 20:00:48,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3780 states. [2020-04-18 20:00:48,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3780 to 3296. [2020-04-18 20:00:48,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3296 states. [2020-04-18 20:00:48,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3296 states to 3296 states and 10565 transitions. [2020-04-18 20:00:48,344 INFO L78 Accepts]: Start accepts. Automaton has 3296 states and 10565 transitions. Word has length 37 [2020-04-18 20:00:48,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 20:00:48,345 INFO L479 AbstractCegarLoop]: Abstraction has 3296 states and 10565 transitions. [2020-04-18 20:00:48,345 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 20:00:48,345 INFO L276 IsEmpty]: Start isEmpty. Operand 3296 states and 10565 transitions. [2020-04-18 20:00:48,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 20:00:48,357 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 20:00:48,357 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] [2020-04-18 20:00:48,357 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 20:00:48,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:00:48,420 INFO L82 PathProgramCache]: Analyzing trace with hash -1505338557, now seen corresponding path program 1 times [2020-04-18 20:00:48,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 20:00:48,421 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1100340514] [2020-04-18 20:00:48,424 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:00:48,428 INFO L259 McrAutomatonBuilder]: Finished intersection with 156 states and 319 transitions. [2020-04-18 20:00:48,431 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states. [2020-04-18 20:00:48,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 20:00:48,432 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 20:00:48,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:00:48,433 INFO L82 PathProgramCache]: Analyzing trace with hash -1505338557, now seen corresponding path program 2 times [2020-04-18 20:00:48,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:00:48,434 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005878935] [2020-04-18 20:00:48,434 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:00:48,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:00:48,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 20:00:48,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005878935] [2020-04-18 20:00:48,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:00:48,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 20:00:48,555 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:00:48,561 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:00:48,573 INFO L259 McrAutomatonBuilder]: Finished intersection with 108 states and 199 transitions. [2020-04-18 20:00:48,574 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:00:48,607 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 20:00:48,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 20:00:48,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 20:00:48,608 INFO L87 Difference]: Start difference. First operand 156 states. Second operand 6 states. [2020-04-18 20:00:48,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:00:48,671 INFO L93 Difference]: Finished difference Result 156 states and 319 transitions. [2020-04-18 20:00:48,672 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 319 transitions. [2020-04-18 20:00:48,672 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 20:00:48,673 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1100340514] [2020-04-18 20:00:48,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 20:00:48,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 20:00:48,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1100340514] [2020-04-18 20:00:48,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 20:00:48,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 20:00:48,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 20:00:48,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-04-18 20:00:48,675 INFO L87 Difference]: Start difference. First operand 3296 states and 10565 transitions. Second operand 6 states. [2020-04-18 20:00:48,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:00:48,778 INFO L93 Difference]: Finished difference Result 3686 states and 11717 transitions. [2020-04-18 20:00:48,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 20:00:48,779 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2020-04-18 20:00:48,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 20:00:48,797 INFO L225 Difference]: With dead ends: 3686 [2020-04-18 20:00:48,797 INFO L226 Difference]: Without dead ends: 2597 [2020-04-18 20:00:48,798 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 37 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 20:00:48,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2597 states. [2020-04-18 20:00:48,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2597 to 2579. [2020-04-18 20:00:48,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2579 states. [2020-04-18 20:00:48,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2579 states to 2579 states and 8146 transitions. [2020-04-18 20:00:48,890 INFO L78 Accepts]: Start accepts. Automaton has 2579 states and 8146 transitions. Word has length 39 [2020-04-18 20:00:48,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 20:00:48,890 INFO L479 AbstractCegarLoop]: Abstraction has 2579 states and 8146 transitions. [2020-04-18 20:00:48,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 20:00:48,890 INFO L276 IsEmpty]: Start isEmpty. Operand 2579 states and 8146 transitions. [2020-04-18 20:00:48,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-04-18 20:00:48,897 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 20:00:48,898 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 20:00:48,902 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 20:00:48,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:00:48,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1629181299, now seen corresponding path program 1 times [2020-04-18 20:00:48,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 20:00:48,903 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [149369152] [2020-04-18 20:00:48,910 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:00:48,915 INFO L259 McrAutomatonBuilder]: Finished intersection with 231 states and 516 transitions. [2020-04-18 20:00:48,917 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states. [2020-04-18 20:00:48,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-04-18 20:00:48,918 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 20:00:48,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:00:48,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1193610027, now seen corresponding path program 2 times [2020-04-18 20:00:48,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:00:48,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239597456] [2020-04-18 20:00:48,919 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:00:48,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:00:49,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 20:00:49,098 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239597456] [2020-04-18 20:00:49,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:00:49,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 20:00:49,100 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:00:49,104 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:00:49,120 INFO L259 McrAutomatonBuilder]: Finished intersection with 165 states and 348 transitions. [2020-04-18 20:00:49,121 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:00:49,195 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 20:00:49,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 20:00:49,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-04-18 20:00:49,196 INFO L87 Difference]: Start difference. First operand 231 states. Second operand 8 states. [2020-04-18 20:00:49,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:00:49,373 INFO L93 Difference]: Finished difference Result 231 states and 516 transitions. [2020-04-18 20:00:49,373 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 516 transitions. [2020-04-18 20:00:49,374 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 20:00:49,374 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [149369152] [2020-04-18 20:00:49,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 20:00:49,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 20:00:49,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [149369152] [2020-04-18 20:00:49,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 20:00:49,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 20:00:49,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 20:00:49,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2020-04-18 20:00:49,379 INFO L87 Difference]: Start difference. First operand 2579 states and 8146 transitions. Second operand 8 states. [2020-04-18 20:00:49,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:00:49,687 INFO L93 Difference]: Finished difference Result 5185 states and 16193 transitions. [2020-04-18 20:00:49,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-04-18 20:00:49,688 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40 [2020-04-18 20:00:49,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 20:00:49,708 INFO L225 Difference]: With dead ends: 5185 [2020-04-18 20:00:49,708 INFO L226 Difference]: Without dead ends: 2705 [2020-04-18 20:00:49,709 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=116, Invalid=226, Unknown=0, NotChecked=0, Total=342 [2020-04-18 20:00:49,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2705 states. [2020-04-18 20:00:49,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2705 to 2057. [2020-04-18 20:00:49,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2057 states. [2020-04-18 20:00:49,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2057 states to 2057 states and 6375 transitions. [2020-04-18 20:00:49,776 INFO L78 Accepts]: Start accepts. Automaton has 2057 states and 6375 transitions. Word has length 40 [2020-04-18 20:00:49,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 20:00:49,777 INFO L479 AbstractCegarLoop]: Abstraction has 2057 states and 6375 transitions. [2020-04-18 20:00:49,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 20:00:49,777 INFO L276 IsEmpty]: Start isEmpty. Operand 2057 states and 6375 transitions. [2020-04-18 20:00:49,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 20:00:49,782 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 20:00:49,782 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 20:00:49,783 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 20:00:49,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:00:49,783 INFO L82 PathProgramCache]: Analyzing trace with hash -1032194322, now seen corresponding path program 1 times [2020-04-18 20:00:49,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 20:00:49,784 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [784667678] [2020-04-18 20:00:49,785 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:00:49,796 INFO L259 McrAutomatonBuilder]: Finished intersection with 543 states and 1558 transitions. [2020-04-18 20:00:49,799 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states. [2020-04-18 20:00:49,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 20:00:49,801 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 20:00:49,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:00:49,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1973776588, now seen corresponding path program 2 times [2020-04-18 20:00:49,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:00:49,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737276460] [2020-04-18 20:00:49,803 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:00:49,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:00:49,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 20:00:49,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737276460] [2020-04-18 20:00:49,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:00:49,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 20:00:49,921 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:00:49,925 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:00:49,959 INFO L259 McrAutomatonBuilder]: Finished intersection with 312 states and 803 transitions. [2020-04-18 20:00:49,959 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:00:50,015 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 28 times. [2020-04-18 20:00:50,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 20:00:50,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 20:00:50,016 INFO L87 Difference]: Start difference. First operand 543 states. Second operand 6 states. [2020-04-18 20:00:50,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:00:50,061 INFO L93 Difference]: Finished difference Result 543 states and 1558 transitions. [2020-04-18 20:00:50,061 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 1558 transitions. [2020-04-18 20:00:50,062 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 20:00:50,063 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [784667678] [2020-04-18 20:00:50,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 20:00:50,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 20:00:50,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [784667678] [2020-04-18 20:00:50,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 20:00:50,064 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 20:00:50,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 20:00:50,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-04-18 20:00:50,065 INFO L87 Difference]: Start difference. First operand 2057 states and 6375 transitions. Second operand 6 states. [2020-04-18 20:00:50,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:00:50,141 INFO L93 Difference]: Finished difference Result 2534 states and 7733 transitions. [2020-04-18 20:00:50,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 20:00:50,142 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 42 [2020-04-18 20:00:50,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 20:00:50,155 INFO L225 Difference]: With dead ends: 2534 [2020-04-18 20:00:50,155 INFO L226 Difference]: Without dead ends: 1838 [2020-04-18 20:00:50,156 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-04-18 20:00:50,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1838 states. [2020-04-18 20:00:50,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1838 to 1838. [2020-04-18 20:00:50,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1838 states. [2020-04-18 20:00:50,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1838 states to 1838 states and 5580 transitions. [2020-04-18 20:00:50,202 INFO L78 Accepts]: Start accepts. Automaton has 1838 states and 5580 transitions. Word has length 42 [2020-04-18 20:00:50,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 20:00:50,203 INFO L479 AbstractCegarLoop]: Abstraction has 1838 states and 5580 transitions. [2020-04-18 20:00:50,203 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 20:00:50,203 INFO L276 IsEmpty]: Start isEmpty. Operand 1838 states and 5580 transitions. [2020-04-18 20:00:50,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 20:00:50,208 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 20:00:50,208 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 20:00:50,208 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 20:00:50,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:00:50,208 INFO L82 PathProgramCache]: Analyzing trace with hash 850515427, now seen corresponding path program 1 times [2020-04-18 20:00:50,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 20:00:50,209 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1470992423] [2020-04-18 20:00:50,210 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:00:50,226 INFO L259 McrAutomatonBuilder]: Finished intersection with 672 states and 1971 transitions. [2020-04-18 20:00:50,231 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states. [2020-04-18 20:00:50,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 20:00:50,234 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 20:00:50,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:00:50,234 INFO L82 PathProgramCache]: Analyzing trace with hash -453666875, now seen corresponding path program 2 times [2020-04-18 20:00:50,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:00:50,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789999965] [2020-04-18 20:00:50,235 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:00:50,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:00:50,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 20:00:50,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789999965] [2020-04-18 20:00:50,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:00:50,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 20:00:50,389 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:00:50,393 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:00:50,420 INFO L259 McrAutomatonBuilder]: Finished intersection with 222 states and 506 transitions. [2020-04-18 20:00:50,421 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:00:50,458 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 19 times. [2020-04-18 20:00:50,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 20:00:50,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 20:00:50,459 INFO L87 Difference]: Start difference. First operand 672 states. Second operand 7 states. [2020-04-18 20:00:50,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:00:50,557 INFO L93 Difference]: Finished difference Result 672 states and 1971 transitions. [2020-04-18 20:00:50,557 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 1971 transitions. [2020-04-18 20:00:50,559 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 20:00:50,560 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1470992423] [2020-04-18 20:00:50,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 20:00:50,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 20:00:50,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1470992423] [2020-04-18 20:00:50,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 20:00:50,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 20:00:50,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 20:00:50,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2020-04-18 20:00:50,561 INFO L87 Difference]: Start difference. First operand 1838 states and 5580 transitions. Second operand 7 states. [2020-04-18 20:00:50,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:00:50,649 INFO L93 Difference]: Finished difference Result 1775 states and 5214 transitions. [2020-04-18 20:00:50,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-04-18 20:00:50,649 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 43 [2020-04-18 20:00:50,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 20:00:50,655 INFO L225 Difference]: With dead ends: 1775 [2020-04-18 20:00:50,655 INFO L226 Difference]: Without dead ends: 1227 [2020-04-18 20:00:50,655 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-04-18 20:00:50,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1227 states. [2020-04-18 20:00:50,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1227 to 1227. [2020-04-18 20:00:50,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1227 states. [2020-04-18 20:00:50,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 3514 transitions. [2020-04-18 20:00:50,683 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 3514 transitions. Word has length 43 [2020-04-18 20:00:50,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 20:00:50,683 INFO L479 AbstractCegarLoop]: Abstraction has 1227 states and 3514 transitions. [2020-04-18 20:00:50,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 20:00:50,684 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 3514 transitions. [2020-04-18 20:00:50,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 20:00:50,686 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 20:00:50,686 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 20:00:50,687 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 20:00:50,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:00:50,687 INFO L82 PathProgramCache]: Analyzing trace with hash -381427612, now seen corresponding path program 1 times [2020-04-18 20:00:50,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 20:00:50,688 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [441071179] [2020-04-18 20:00:50,689 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:00:50,713 INFO L259 McrAutomatonBuilder]: Finished intersection with 1110 states and 3421 transitions. [2020-04-18 20:00:50,721 INFO L276 IsEmpty]: Start isEmpty. Operand 1110 states. [2020-04-18 20:00:50,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 20:00:50,725 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 20:00:50,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:00:50,725 INFO L82 PathProgramCache]: Analyzing trace with hash -808251066, now seen corresponding path program 2 times [2020-04-18 20:00:50,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:00:50,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308852027] [2020-04-18 20:00:50,726 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:00:50,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:00:50,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 20:00:50,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308852027] [2020-04-18 20:00:50,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:00:50,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 20:00:50,827 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:00:50,831 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:00:50,859 INFO L259 McrAutomatonBuilder]: Finished intersection with 190 states and 395 transitions. [2020-04-18 20:00:50,859 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:00:50,945 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 12 times. [2020-04-18 20:00:50,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 20:00:50,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-04-18 20:00:50,946 INFO L87 Difference]: Start difference. First operand 1110 states. Second operand 9 states. [2020-04-18 20:00:51,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:00:51,173 INFO L93 Difference]: Finished difference Result 1110 states and 3421 transitions. [2020-04-18 20:00:51,173 INFO L276 IsEmpty]: Start isEmpty. Operand 1110 states and 3421 transitions. [2020-04-18 20:00:51,179 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 20:00:51,179 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [441071179] [2020-04-18 20:00:51,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 20:00:51,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 20:00:51,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [441071179] [2020-04-18 20:00:51,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 20:00:51,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 20:00:51,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 20:00:51,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=199, Unknown=0, NotChecked=0, Total=306 [2020-04-18 20:00:51,181 INFO L87 Difference]: Start difference. First operand 1227 states and 3514 transitions. Second operand 9 states. [2020-04-18 20:00:51,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:00:51,236 INFO L93 Difference]: Finished difference Result 795 states and 2191 transitions. [2020-04-18 20:00:51,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-04-18 20:00:51,237 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 45 [2020-04-18 20:00:51,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 20:00:51,237 INFO L225 Difference]: With dead ends: 795 [2020-04-18 20:00:51,237 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 20:00:51,238 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=199, Unknown=0, NotChecked=0, Total=306 [2020-04-18 20:00:51,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 20:00:51,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 20:00:51,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 20:00:51,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 20:00:51,239 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 45 [2020-04-18 20:00:51,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 20:00:51,240 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 20:00:51,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 20:00:51,240 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 20:00:51,240 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 20:00:51,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 08:00:51 BasicIcfg [2020-04-18 20:00:51,245 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 20:00:51,248 INFO L168 Benchmark]: Toolchain (without parser) took 7252.06 ms. Allocated memory was 137.4 MB in the beginning and 388.0 MB in the end (delta: 250.6 MB). Free memory was 99.0 MB in the beginning and 107.4 MB in the end (delta: -8.4 MB). Peak memory consumption was 242.2 MB. Max. memory is 7.1 GB. [2020-04-18 20:00:51,249 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 137.4 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-04-18 20:00:51,250 INFO L168 Benchmark]: CACSL2BoogieTranslator took 667.76 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 97.0 MB in the beginning and 157.9 MB in the end (delta: -60.9 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2020-04-18 20:00:51,251 INFO L168 Benchmark]: Boogie Procedure Inliner took 64.78 ms. Allocated memory is still 201.3 MB. Free memory was 157.9 MB in the beginning and 155.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 20:00:51,252 INFO L168 Benchmark]: Boogie Preprocessor took 38.23 ms. Allocated memory is still 201.3 MB. Free memory was 155.8 MB in the beginning and 154.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 20:00:51,252 INFO L168 Benchmark]: RCFGBuilder took 434.88 ms. Allocated memory is still 201.3 MB. Free memory was 154.5 MB in the beginning and 132.7 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. [2020-04-18 20:00:51,254 INFO L168 Benchmark]: TraceAbstraction took 6017.75 ms. Allocated memory was 201.3 MB in the beginning and 388.0 MB in the end (delta: 186.6 MB). Free memory was 132.0 MB in the beginning and 107.4 MB in the end (delta: 24.6 MB). Peak memory consumption was 211.2 MB. Max. memory is 7.1 GB. [2020-04-18 20:00:51,258 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 137.4 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 667.76 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 97.0 MB in the beginning and 157.9 MB in the end (delta: -60.9 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 64.78 ms. Allocated memory is still 201.3 MB. Free memory was 157.9 MB in the beginning and 155.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 38.23 ms. Allocated memory is still 201.3 MB. Free memory was 155.8 MB in the beginning and 154.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 434.88 ms. Allocated memory is still 201.3 MB. Free memory was 154.5 MB in the beginning and 132.7 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6017.75 ms. Allocated memory was 201.3 MB in the beginning and 388.0 MB in the end (delta: 186.6 MB). Free memory was 132.0 MB in the beginning and 107.4 MB in the end (delta: 24.6 MB). Peak memory consumption was 211.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.9s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.4s, HoareTripleCheckerStatistics: 655 SDtfs, 1124 SDslu, 2189 SDs, 0 SdLazy, 346 SolverSat, 84 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 426 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8471occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 7 MinimizatonAttempts, 1624 StatesRemovedByMinimization, 4 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...