/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/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe009_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 13:37:00,712 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 13:37:00,715 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 13:37:00,755 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 13:37:00,756 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 13:37:00,767 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 13:37:00,769 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 13:37:00,772 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 13:37:00,775 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 13:37:00,778 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 13:37:00,779 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 13:37:00,781 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 13:37:00,781 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 13:37:00,784 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 13:37:00,786 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 13:37:00,788 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 13:37:00,789 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 13:37:00,790 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 13:37:00,792 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 13:37:00,799 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 13:37:00,800 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 13:37:00,801 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 13:37:00,802 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 13:37:00,803 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 13:37:00,808 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 13:37:00,809 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 13:37:00,809 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 13:37:00,812 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 13:37:00,812 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 13:37:00,813 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 13:37:00,813 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 13:37:00,815 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 13:37:00,816 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 13:37:00,816 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 13:37:00,817 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 13:37:00,818 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 13:37:00,818 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 13:37:00,818 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 13:37:00,819 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 13:37:00,819 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 13:37:00,821 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 13:37:00,822 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-10-16 13:37:00,864 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 13:37:00,864 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 13:37:00,866 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 13:37:00,866 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 13:37:00,866 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 13:37:00,867 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 13:37:00,867 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 13:37:00,867 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 13:37:00,867 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 13:37:00,868 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 13:37:00,869 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 13:37:00,869 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 13:37:00,869 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 13:37:00,869 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 13:37:00,870 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 13:37:00,870 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 13:37:00,870 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 13:37:00,870 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 13:37:00,870 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 13:37:00,871 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 13:37:00,871 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 13:37:00,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 13:37:00,871 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 13:37:00,871 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-16 13:37:00,872 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 13:37:00,872 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 13:37:00,872 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 13:37:00,872 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-16 13:37:00,872 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-16 13:37:00,873 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 13:37:00,873 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-16 13:37:01,158 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 13:37:01,171 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 13:37:01,174 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 13:37:01,176 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 13:37:01,176 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 13:37:01,177 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe009_tso.oepc.i [2020-10-16 13:37:01,238 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7a66ebb08/7d5a9e5ae7eb4c8c934226a9175da825/FLAG496b1b2b0 [2020-10-16 13:37:01,811 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 13:37:01,812 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe009_tso.oepc.i [2020-10-16 13:37:01,836 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7a66ebb08/7d5a9e5ae7eb4c8c934226a9175da825/FLAG496b1b2b0 [2020-10-16 13:37:02,078 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7a66ebb08/7d5a9e5ae7eb4c8c934226a9175da825 [2020-10-16 13:37:02,088 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 13:37:02,090 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 13:37:02,091 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 13:37:02,091 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 13:37:02,095 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 13:37:02,096 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:37:02" (1/1) ... [2020-10-16 13:37:02,099 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e86d97c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:02, skipping insertion in model container [2020-10-16 13:37:02,099 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:37:02" (1/1) ... [2020-10-16 13:37:02,107 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 13:37:02,161 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 13:37:02,623 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 13:37:02,635 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 13:37:02,685 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 13:37:02,767 INFO L208 MainTranslator]: Completed translation [2020-10-16 13:37:02,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:02 WrapperNode [2020-10-16 13:37:02,768 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 13:37:02,769 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 13:37:02,769 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 13:37:02,769 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 13:37:02,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:02" (1/1) ... [2020-10-16 13:37:02,795 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:02" (1/1) ... [2020-10-16 13:37:02,818 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 13:37:02,819 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 13:37:02,819 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 13:37:02,819 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 13:37:02,828 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:02" (1/1) ... [2020-10-16 13:37:02,828 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:02" (1/1) ... [2020-10-16 13:37:02,831 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:02" (1/1) ... [2020-10-16 13:37:02,832 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:02" (1/1) ... [2020-10-16 13:37:02,838 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:02" (1/1) ... [2020-10-16 13:37:02,840 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:02" (1/1) ... [2020-10-16 13:37:02,842 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:02" (1/1) ... [2020-10-16 13:37:02,845 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 13:37:02,846 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 13:37:02,846 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 13:37:02,846 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 13:37:02,847 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:02" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 13:37:02,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 13:37:02,915 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 13:37:02,916 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 13:37:02,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 13:37:02,916 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 13:37:02,916 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 13:37:02,916 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 13:37:02,917 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 13:37:02,917 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 13:37:02,917 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 13:37:02,917 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 13:37:02,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 13:37:02,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 13:37:02,919 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 13:37:03,279 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 13:37:03,279 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 13:37:03,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:37:03 BoogieIcfgContainer [2020-10-16 13:37:03,282 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 13:37:03,284 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 13:37:03,284 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 13:37:03,288 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 13:37:03,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:37:02" (1/3) ... [2020-10-16 13:37:03,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6070bc1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:37:03, skipping insertion in model container [2020-10-16 13:37:03,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:02" (2/3) ... [2020-10-16 13:37:03,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6070bc1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:37:03, skipping insertion in model container [2020-10-16 13:37:03,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:37:03" (3/3) ... [2020-10-16 13:37:03,291 INFO L111 eAbstractionObserver]: Analyzing ICFG safe009_tso.oepc.i [2020-10-16 13:37:03,304 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 13:37:03,304 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-16 13:37:03,312 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 13:37:03,313 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 13:37:03,343 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:37:03,344 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:37:03,344 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:37:03,345 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:37:03,345 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:37:03,346 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:37:03,346 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:37:03,346 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:37:03,347 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:37:03,347 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:37:03,347 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:37:03,348 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:37:03,348 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:37:03,348 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:37:03,349 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:37:03,349 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:37:03,349 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:37:03,350 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:37:03,359 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:37:03,360 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:37:03,360 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:37:03,361 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:37:03,367 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:37:03,368 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:37:03,368 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:37:03,368 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:37:03,372 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:37:03,372 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:37:03,372 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:37:03,372 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:37:03,375 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 13:37:03,389 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 13:37:03,409 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 13:37:03,410 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 13:37:03,410 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 13:37:03,410 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-16 13:37:03,410 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 13:37:03,411 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 13:37:03,411 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 13:37:03,411 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 13:37:03,424 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 13:37:03,425 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 68 transitions, 151 flow [2020-10-16 13:37:03,428 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 76 places, 68 transitions, 151 flow [2020-10-16 13:37:03,430 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-10-16 13:37:03,475 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-10-16 13:37:03,476 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 13:37:03,481 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-10-16 13:37:03,483 INFO L117 LiptonReduction]: Number of co-enabled transitions 1186 [2020-10-16 13:37:04,804 INFO L132 LiptonReduction]: Checked pairs total: 2093 [2020-10-16 13:37:04,805 INFO L134 LiptonReduction]: Total number of compositions: 56 [2020-10-16 13:37:04,812 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 20 transitions, 55 flow [2020-10-16 13:37:04,835 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 234 states. [2020-10-16 13:37:04,837 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states. [2020-10-16 13:37:04,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 13:37:04,845 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:37:04,846 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:37:04,846 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:37:04,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:37:04,852 INFO L82 PathProgramCache]: Analyzing trace with hash 364476878, now seen corresponding path program 1 times [2020-10-16 13:37:04,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:37:04,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028490765] [2020-10-16 13:37:04,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:37:04,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:37:05,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:37:05,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028490765] [2020-10-16 13:37:05,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:37:05,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 13:37:05,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1180952954] [2020-10-16 13:37:05,081 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:37:05,084 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:37:05,099 INFO L258 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-16 13:37:05,099 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:37:05,103 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:37:05,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 13:37:05,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:37:05,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 13:37:05,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:37:05,121 INFO L87 Difference]: Start difference. First operand 234 states. Second operand 3 states. [2020-10-16 13:37:05,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:37:05,153 INFO L93 Difference]: Finished difference Result 222 states and 615 transitions. [2020-10-16 13:37:05,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 13:37:05,155 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-16 13:37:05,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:37:05,169 INFO L225 Difference]: With dead ends: 222 [2020-10-16 13:37:05,169 INFO L226 Difference]: Without dead ends: 174 [2020-10-16 13:37:05,171 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:37:05,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-16 13:37:05,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2020-10-16 13:37:05,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-10-16 13:37:05,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 463 transitions. [2020-10-16 13:37:05,232 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 463 transitions. Word has length 8 [2020-10-16 13:37:05,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:37:05,234 INFO L481 AbstractCegarLoop]: Abstraction has 174 states and 463 transitions. [2020-10-16 13:37:05,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 13:37:05,234 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 463 transitions. [2020-10-16 13:37:05,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 13:37:05,235 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:37:05,236 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:37:05,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 13:37:05,236 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:37:05,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:37:05,237 INFO L82 PathProgramCache]: Analyzing trace with hash -273417231, now seen corresponding path program 1 times [2020-10-16 13:37:05,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:37:05,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048057493] [2020-10-16 13:37:05,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:37:05,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:37:05,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:37:05,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048057493] [2020-10-16 13:37:05,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:37:05,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:37:05,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [539375103] [2020-10-16 13:37:05,359 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:37:05,360 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:37:05,363 INFO L258 McrAutomatonBuilder]: Finished intersection with 15 states and 19 transitions. [2020-10-16 13:37:05,364 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:37:05,424 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:37:05,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:37:05,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:37:05,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:37:05,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:37:05,427 INFO L87 Difference]: Start difference. First operand 174 states and 463 transitions. Second operand 4 states. [2020-10-16 13:37:05,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:37:05,457 INFO L93 Difference]: Finished difference Result 240 states and 615 transitions. [2020-10-16 13:37:05,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 13:37:05,458 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-16 13:37:05,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:37:05,460 INFO L225 Difference]: With dead ends: 240 [2020-10-16 13:37:05,460 INFO L226 Difference]: Without dead ends: 138 [2020-10-16 13:37:05,461 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:37:05,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-16 13:37:05,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2020-10-16 13:37:05,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-16 13:37:05,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 351 transitions. [2020-10-16 13:37:05,477 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 351 transitions. Word has length 9 [2020-10-16 13:37:05,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:37:05,478 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 351 transitions. [2020-10-16 13:37:05,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:37:05,478 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 351 transitions. [2020-10-16 13:37:05,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 13:37:05,479 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:37:05,479 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:37:05,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 13:37:05,480 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:37:05,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:37:05,480 INFO L82 PathProgramCache]: Analyzing trace with hash -1925064459, now seen corresponding path program 1 times [2020-10-16 13:37:05,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:37:05,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158095399] [2020-10-16 13:37:05,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:37:05,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:37:05,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:37:05,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158095399] [2020-10-16 13:37:05,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:37:05,534 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 13:37:05,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [110755008] [2020-10-16 13:37:05,535 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:37:05,536 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:37:05,538 INFO L258 McrAutomatonBuilder]: Finished intersection with 13 states and 14 transitions. [2020-10-16 13:37:05,538 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:37:05,555 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:37:05,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 13:37:05,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:37:05,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 13:37:05,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:37:05,557 INFO L87 Difference]: Start difference. First operand 138 states and 351 transitions. Second operand 3 states. [2020-10-16 13:37:05,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:37:05,571 INFO L93 Difference]: Finished difference Result 132 states and 332 transitions. [2020-10-16 13:37:05,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 13:37:05,571 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-16 13:37:05,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:37:05,573 INFO L225 Difference]: With dead ends: 132 [2020-10-16 13:37:05,573 INFO L226 Difference]: Without dead ends: 132 [2020-10-16 13:37:05,574 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:37:05,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-10-16 13:37:05,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2020-10-16 13:37:05,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-16 13:37:05,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 332 transitions. [2020-10-16 13:37:05,594 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 332 transitions. Word has length 10 [2020-10-16 13:37:05,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:37:05,595 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 332 transitions. [2020-10-16 13:37:05,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 13:37:05,595 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 332 transitions. [2020-10-16 13:37:05,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 13:37:05,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:37:05,599 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:37:05,600 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 13:37:05,600 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:37:05,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:37:05,600 INFO L82 PathProgramCache]: Analyzing trace with hash 452543204, now seen corresponding path program 1 times [2020-10-16 13:37:05,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:37:05,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277555765] [2020-10-16 13:37:05,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:37:05,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:37:05,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:37:05,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277555765] [2020-10-16 13:37:05,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:37:05,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:37:05,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [644698911] [2020-10-16 13:37:05,657 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:37:05,658 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:37:05,661 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 31 transitions. [2020-10-16 13:37:05,661 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:37:05,710 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:37:05,711 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:37:05,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:37:05,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:37:05,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:37:05,712 INFO L87 Difference]: Start difference. First operand 132 states and 332 transitions. Second operand 4 states. [2020-10-16 13:37:05,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:37:05,730 INFO L93 Difference]: Finished difference Result 144 states and 346 transitions. [2020-10-16 13:37:05,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 13:37:05,730 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-16 13:37:05,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:37:05,732 INFO L225 Difference]: With dead ends: 144 [2020-10-16 13:37:05,732 INFO L226 Difference]: Without dead ends: 60 [2020-10-16 13:37:05,732 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:37:05,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-16 13:37:05,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-10-16 13:37:05,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-16 13:37:05,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 129 transitions. [2020-10-16 13:37:05,737 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 129 transitions. Word has length 11 [2020-10-16 13:37:05,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:37:05,737 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 129 transitions. [2020-10-16 13:37:05,738 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:37:05,738 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 129 transitions. [2020-10-16 13:37:05,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 13:37:05,738 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:37:05,739 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:37:05,739 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 13:37:05,739 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:37:05,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:37:05,740 INFO L82 PathProgramCache]: Analyzing trace with hash 1143893480, now seen corresponding path program 1 times [2020-10-16 13:37:05,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:37:05,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322273463] [2020-10-16 13:37:05,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:37:05,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:37:05,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:37:05,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322273463] [2020-10-16 13:37:05,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:37:05,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:37:05,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [420205766] [2020-10-16 13:37:05,812 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:37:05,813 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:37:05,816 INFO L258 McrAutomatonBuilder]: Finished intersection with 17 states and 20 transitions. [2020-10-16 13:37:05,816 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:37:05,833 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:37:05,858 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:37:05,873 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:37:05,887 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:37:05,893 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2315#(not (= 3 ~__unbuffered_cnt~0))] [2020-10-16 13:37:05,894 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:37:05,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:37:05,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:37:05,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:37:05,895 INFO L87 Difference]: Start difference. First operand 60 states and 129 transitions. Second operand 5 states. [2020-10-16 13:37:05,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:37:05,951 INFO L93 Difference]: Finished difference Result 59 states and 111 transitions. [2020-10-16 13:37:05,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 13:37:05,952 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-16 13:37:05,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:37:05,968 INFO L225 Difference]: With dead ends: 59 [2020-10-16 13:37:05,968 INFO L226 Difference]: Without dead ends: 38 [2020-10-16 13:37:05,968 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:37:05,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-16 13:37:05,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-10-16 13:37:05,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-16 13:37:05,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 61 transitions. [2020-10-16 13:37:05,971 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 61 transitions. Word has length 12 [2020-10-16 13:37:05,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:37:05,972 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 61 transitions. [2020-10-16 13:37:05,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:37:05,972 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 61 transitions. [2020-10-16 13:37:05,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 13:37:05,973 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:37:05,973 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:37:05,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 13:37:05,973 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:37:05,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:37:05,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1757733921, now seen corresponding path program 1 times [2020-10-16 13:37:05,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:37:05,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464084132] [2020-10-16 13:37:05,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:37:05,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:37:06,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:37:06,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464084132] [2020-10-16 13:37:06,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:37:06,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 13:37:06,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1914017507] [2020-10-16 13:37:06,046 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:37:06,048 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:37:06,051 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 24 transitions. [2020-10-16 13:37:06,052 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:37:06,073 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:37:06,123 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [2461#(not (= 3 ~__unbuffered_cnt~0)), 2462#(not (= ~__unbuffered_cnt~0 2)), 2463#(not (= ~__unbuffered_cnt~0 1))] [2020-10-16 13:37:06,124 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 13:37:06,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:37:06,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 13:37:06,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-16 13:37:06,125 INFO L87 Difference]: Start difference. First operand 38 states and 61 transitions. Second operand 9 states. [2020-10-16 13:37:06,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:37:06,199 INFO L93 Difference]: Finished difference Result 35 states and 53 transitions. [2020-10-16 13:37:06,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 13:37:06,200 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2020-10-16 13:37:06,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:37:06,200 INFO L225 Difference]: With dead ends: 35 [2020-10-16 13:37:06,200 INFO L226 Difference]: Without dead ends: 29 [2020-10-16 13:37:06,201 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-16 13:37:06,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-16 13:37:06,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-16 13:37:06,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-16 13:37:06,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 43 transitions. [2020-10-16 13:37:06,203 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 43 transitions. Word has length 14 [2020-10-16 13:37:06,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:37:06,204 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 43 transitions. [2020-10-16 13:37:06,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 13:37:06,204 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 43 transitions. [2020-10-16 13:37:06,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-16 13:37:06,205 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:37:06,205 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:37:06,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 13:37:06,205 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:37:06,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:37:06,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1250665313, now seen corresponding path program 1 times [2020-10-16 13:37:06,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:37:06,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830957317] [2020-10-16 13:37:06,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:37:06,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:37:06,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:37:06,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830957317] [2020-10-16 13:37:06,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:37:06,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:37:06,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1934310452] [2020-10-16 13:37:06,237 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:37:06,239 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:37:06,243 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 28 transitions. [2020-10-16 13:37:06,243 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:37:06,249 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:37:06,249 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 13:37:06,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:37:06,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 13:37:06,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:37:06,250 INFO L87 Difference]: Start difference. First operand 29 states and 43 transitions. Second operand 3 states. [2020-10-16 13:37:06,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:37:06,257 INFO L93 Difference]: Finished difference Result 28 states and 42 transitions. [2020-10-16 13:37:06,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 13:37:06,257 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-10-16 13:37:06,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:37:06,258 INFO L225 Difference]: With dead ends: 28 [2020-10-16 13:37:06,258 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 13:37:06,258 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:37:06,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 13:37:06,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 13:37:06,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 13:37:06,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 13:37:06,259 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-10-16 13:37:06,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:37:06,260 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 13:37:06,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 13:37:06,260 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 13:37:06,260 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 13:37:06,260 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 13:37:06,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:37:06 BasicIcfg [2020-10-16 13:37:06,264 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 13:37:06,267 INFO L168 Benchmark]: Toolchain (without parser) took 4176.60 ms. Allocated memory was 141.6 MB in the beginning and 244.8 MB in the end (delta: 103.3 MB). Free memory was 102.1 MB in the beginning and 171.7 MB in the end (delta: -69.6 MB). Peak memory consumption was 33.6 MB. Max. memory is 7.1 GB. [2020-10-16 13:37:06,268 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 141.6 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-16 13:37:06,269 INFO L168 Benchmark]: CACSL2BoogieTranslator took 677.51 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 101.9 MB in the beginning and 161.3 MB in the end (delta: -59.4 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2020-10-16 13:37:06,270 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.32 ms. Allocated memory is still 204.5 MB. Free memory was 161.3 MB in the beginning and 159.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-16 13:37:06,271 INFO L168 Benchmark]: Boogie Preprocessor took 26.95 ms. Allocated memory is still 204.5 MB. Free memory was 159.3 MB in the beginning and 157.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-16 13:37:06,272 INFO L168 Benchmark]: RCFGBuilder took 436.41 ms. Allocated memory is still 204.5 MB. Free memory was 157.4 MB in the beginning and 135.9 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. [2020-10-16 13:37:06,273 INFO L168 Benchmark]: TraceAbstraction took 2980.77 ms. Allocated memory was 204.5 MB in the beginning and 244.8 MB in the end (delta: 40.4 MB). Free memory was 135.2 MB in the beginning and 171.7 MB in the end (delta: -36.5 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2020-10-16 13:37:06,277 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 141.6 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 677.51 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 101.9 MB in the beginning and 161.3 MB in the end (delta: -59.4 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 49.32 ms. Allocated memory is still 204.5 MB. Free memory was 161.3 MB in the beginning and 159.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.95 ms. Allocated memory is still 204.5 MB. Free memory was 159.3 MB in the beginning and 157.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 436.41 ms. Allocated memory is still 204.5 MB. Free memory was 157.4 MB in the beginning and 135.9 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2980.77 ms. Allocated memory was 204.5 MB in the beginning and 244.8 MB in the end (delta: 40.4 MB). Free memory was 135.2 MB in the beginning and 171.7 MB in the end (delta: -36.5 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 618 VarBasedMoverChecksPositive, 20 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 31 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.3s, 76 PlacesBefore, 30 PlacesAfterwards, 68 TransitionsBefore, 20 TransitionsAfterwards, 1186 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 56 TotalNumberOfCompositions, 2093 MoverChecksTotal - 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, 67 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.8s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 113 SDtfs, 88 SDslu, 126 SDs, 0 SdLazy, 101 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 50 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=234occurred 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: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 80 NumberOfCodeBlocks, 80 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 73 ConstructedInterpolants, 0 QuantifiedInterpolants, 2391 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, 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...