/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-VariableLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/thin002_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 02:57:00,777 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 02:57:00,780 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 02:57:00,791 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 02:57:00,792 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 02:57:00,793 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 02:57:00,794 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 02:57:00,796 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 02:57:00,798 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 02:57:00,799 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 02:57:00,800 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 02:57:00,801 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 02:57:00,801 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 02:57:00,802 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 02:57:00,803 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 02:57:00,804 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 02:57:00,805 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 02:57:00,806 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 02:57:00,807 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 02:57:00,809 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 02:57:00,811 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 02:57:00,812 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 02:57:00,813 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 02:57:00,814 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 02:57:00,816 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 02:57:00,816 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 02:57:00,817 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 02:57:00,817 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 02:57:00,818 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 02:57:00,819 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 02:57:00,819 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 02:57:00,820 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 02:57:00,820 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 02:57:00,821 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 02:57:00,822 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 02:57:00,823 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 02:57:00,823 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 02:57:00,823 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 02:57:00,824 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 02:57:00,825 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 02:57:00,825 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 02:57:00,826 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-VariableLbe.epf [2020-04-18 02:57:00,841 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 02:57:00,841 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 02:57:00,842 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 02:57:00,842 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 02:57:00,842 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 02:57:00,843 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 02:57:00,843 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 02:57:00,843 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 02:57:00,843 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 02:57:00,844 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 02:57:00,844 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 02:57:00,844 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 02:57:00,844 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 02:57:00,844 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 02:57:00,845 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 02:57:00,845 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 02:57:00,845 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 02:57:00,845 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 02:57:00,845 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 02:57:00,846 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 02:57:00,846 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 02:57:00,846 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 02:57:00,846 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 02:57:00,846 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 02:57:00,847 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 02:57:00,847 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-18 02:57:00,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 02:57:00,847 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 02:57:00,847 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 02:57:00,848 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 02:57:01,187 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 02:57:01,202 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 02:57:01,206 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 02:57:01,208 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 02:57:01,209 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 02:57:01,210 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin002_tso.oepc.i [2020-04-18 02:57:01,287 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de06e7f1e/6d1d3e5c533c4f6a9bc9718740778fae/FLAGeda9c8718 [2020-04-18 02:57:01,848 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 02:57:01,849 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_tso.oepc.i [2020-04-18 02:57:01,877 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de06e7f1e/6d1d3e5c533c4f6a9bc9718740778fae/FLAGeda9c8718 [2020-04-18 02:57:02,115 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de06e7f1e/6d1d3e5c533c4f6a9bc9718740778fae [2020-04-18 02:57:02,125 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 02:57:02,147 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 02:57:02,149 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 02:57:02,149 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 02:57:02,152 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 02:57:02,153 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:57:02" (1/1) ... [2020-04-18 02:57:02,156 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2748702d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:57:02, skipping insertion in model container [2020-04-18 02:57:02,156 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:57:02" (1/1) ... [2020-04-18 02:57:02,165 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 02:57:02,233 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 02:57:02,868 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:57:02,884 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 02:57:02,958 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:57:03,034 INFO L208 MainTranslator]: Completed translation [2020-04-18 02:57:03,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:57:03 WrapperNode [2020-04-18 02:57:03,034 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 02:57:03,035 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 02:57:03,035 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 02:57:03,036 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 02:57:03,044 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:57:03" (1/1) ... [2020-04-18 02:57:03,064 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:57:03" (1/1) ... [2020-04-18 02:57:03,087 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 02:57:03,088 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 02:57:03,088 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 02:57:03,088 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 02:57:03,098 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:57:03" (1/1) ... [2020-04-18 02:57:03,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:57:03" (1/1) ... [2020-04-18 02:57:03,103 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:57:03" (1/1) ... [2020-04-18 02:57:03,103 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:57:03" (1/1) ... [2020-04-18 02:57:03,112 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:57:03" (1/1) ... [2020-04-18 02:57:03,115 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:57:03" (1/1) ... [2020-04-18 02:57:03,120 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:57:03" (1/1) ... [2020-04-18 02:57:03,123 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 02:57:03,124 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 02:57:03,124 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 02:57:03,124 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 02:57:03,125 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:57:03" (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 02:57:03,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 02:57:03,188 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 02:57:03,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 02:57:03,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 02:57:03,188 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 02:57:03,189 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 02:57:03,189 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 02:57:03,189 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 02:57:03,189 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 02:57:03,189 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 02:57:03,190 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-04-18 02:57:03,190 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-04-18 02:57:03,190 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 02:57:03,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 02:57:03,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 02:57:03,192 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 02:57:03,635 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 02:57:03,635 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 02:57:03,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:57:03 BoogieIcfgContainer [2020-04-18 02:57:03,640 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 02:57:03,641 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 02:57:03,642 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 02:57:03,645 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 02:57:03,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 02:57:02" (1/3) ... [2020-04-18 02:57:03,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7860165c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:57:03, skipping insertion in model container [2020-04-18 02:57:03,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:57:03" (2/3) ... [2020-04-18 02:57:03,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7860165c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:57:03, skipping insertion in model container [2020-04-18 02:57:03,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:57:03" (3/3) ... [2020-04-18 02:57:03,649 INFO L109 eAbstractionObserver]: Analyzing ICFG thin002_tso.oepc.i [2020-04-18 02:57:03,659 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 02:57:03,660 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 02:57:03,667 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 02:57:03,669 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 02:57:03,702 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:57:03,702 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:57:03,703 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:57:03,703 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:57:03,703 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:57:03,703 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:57:03,704 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:57:03,704 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:57:03,704 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:57:03,704 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:57:03,705 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:57:03,705 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:57:03,706 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:57:03,706 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:57:03,706 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:57:03,706 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:57:03,707 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:57:03,707 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:57:03,707 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:57:03,707 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:57:03,708 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:57:03,708 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:57:03,708 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:57:03,708 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:57:03,713 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:57:03,713 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:57:03,713 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:57:03,713 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:57:03,719 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:57:03,719 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:57:03,719 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:57:03,720 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:57:03,722 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:57:03,722 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:57:03,722 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:57:03,723 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:57:03,725 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:57:03,725 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:57:03,725 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:57:03,725 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:57:03,738 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-04-18 02:57:03,756 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 02:57:03,757 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 02:57:03,757 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 02:57:03,757 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 02:57:03,757 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 02:57:03,757 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 02:57:03,757 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 02:57:03,757 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 02:57:03,773 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 86 transitions, 192 flow [2020-04-18 02:57:03,775 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 97 places, 86 transitions, 192 flow [2020-04-18 02:57:03,823 INFO L129 PetriNetUnfolder]: 2/82 cut-off events. [2020-04-18 02:57:03,823 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:57:03,829 INFO L80 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 66 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2020-04-18 02:57:03,833 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 97 places, 86 transitions, 192 flow [2020-04-18 02:57:03,859 INFO L129 PetriNetUnfolder]: 2/82 cut-off events. [2020-04-18 02:57:03,860 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:57:03,861 INFO L80 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 66 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2020-04-18 02:57:03,865 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2016 [2020-04-18 02:57:03,866 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 02:57:05,459 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-04-18 02:57:05,548 INFO L206 etLargeBlockEncoding]: Checked pairs total: 4485 [2020-04-18 02:57:05,548 INFO L214 etLargeBlockEncoding]: Total number of compositions: 67 [2020-04-18 02:57:05,553 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 29 transitions, 78 flow [2020-04-18 02:57:05,686 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1450 states. [2020-04-18 02:57:05,689 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states. [2020-04-18 02:57:05,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 02:57:05,704 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:57:05,705 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:57:05,705 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:57:05,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:57:05,712 INFO L82 PathProgramCache]: Analyzing trace with hash 546901279, now seen corresponding path program 1 times [2020-04-18 02:57:05,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:57:05,722 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434867624] [2020-04-18 02:57:05,723 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:57:05,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:57:05,968 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 02:57:05,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434867624] [2020-04-18 02:57:05,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:57:05,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:57:05,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658397087] [2020-04-18 02:57:05,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-18 02:57:05,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:57:05,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 02:57:05,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 02:57:05,993 INFO L87 Difference]: Start difference. First operand 1450 states. Second operand 2 states. [2020-04-18 02:57:06,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:57:06,067 INFO L93 Difference]: Finished difference Result 1450 states and 5376 transitions. [2020-04-18 02:57:06,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-18 02:57:06,072 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-04-18 02:57:06,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:57:06,126 INFO L225 Difference]: With dead ends: 1450 [2020-04-18 02:57:06,127 INFO L226 Difference]: Without dead ends: 1194 [2020-04-18 02:57:06,136 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 02:57:06,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2020-04-18 02:57:06,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1194. [2020-04-18 02:57:06,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1194 states. [2020-04-18 02:57:06,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 4352 transitions. [2020-04-18 02:57:06,298 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 4352 transitions. Word has length 10 [2020-04-18 02:57:06,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:57:06,304 INFO L479 AbstractCegarLoop]: Abstraction has 1194 states and 4352 transitions. [2020-04-18 02:57:06,304 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-18 02:57:06,304 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 4352 transitions. [2020-04-18 02:57:06,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 02:57:06,315 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:57:06,315 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:57:06,316 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:57:06,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:57:06,318 INFO L82 PathProgramCache]: Analyzing trace with hash -225951647, now seen corresponding path program 1 times [2020-04-18 02:57:06,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:57:06,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126953377] [2020-04-18 02:57:06,318 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:57:06,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:57:06,523 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 02:57:06,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126953377] [2020-04-18 02:57:06,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:57:06,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:57:06,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404875888] [2020-04-18 02:57:06,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:57:06,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:57:06,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:57:06,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:57:06,527 INFO L87 Difference]: Start difference. First operand 1194 states and 4352 transitions. Second operand 4 states. [2020-04-18 02:57:06,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:57:06,591 INFO L93 Difference]: Finished difference Result 1322 states and 4640 transitions. [2020-04-18 02:57:06,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:57:06,592 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-18 02:57:06,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:57:06,602 INFO L225 Difference]: With dead ends: 1322 [2020-04-18 02:57:06,602 INFO L226 Difference]: Without dead ends: 1066 [2020-04-18 02:57:06,603 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:57:06,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2020-04-18 02:57:06,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2020-04-18 02:57:06,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1066 states. [2020-04-18 02:57:06,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 3808 transitions. [2020-04-18 02:57:06,646 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 3808 transitions. Word has length 11 [2020-04-18 02:57:06,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:57:06,646 INFO L479 AbstractCegarLoop]: Abstraction has 1066 states and 3808 transitions. [2020-04-18 02:57:06,646 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:57:06,647 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 3808 transitions. [2020-04-18 02:57:06,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 02:57:06,648 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:57:06,648 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:57:06,649 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:57:06,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:57:06,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1527944373, now seen corresponding path program 1 times [2020-04-18 02:57:06,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:57:06,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085733478] [2020-04-18 02:57:06,650 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:57:06,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:57:06,789 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 02:57:06,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085733478] [2020-04-18 02:57:06,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:57:06,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:57:06,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376360310] [2020-04-18 02:57:06,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:57:06,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:57:06,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:57:06,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:57:06,792 INFO L87 Difference]: Start difference. First operand 1066 states and 3808 transitions. Second operand 4 states. [2020-04-18 02:57:06,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:57:06,829 INFO L93 Difference]: Finished difference Result 1162 states and 4016 transitions. [2020-04-18 02:57:06,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:57:06,830 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-18 02:57:06,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:57:06,839 INFO L225 Difference]: With dead ends: 1162 [2020-04-18 02:57:06,840 INFO L226 Difference]: Without dead ends: 970 [2020-04-18 02:57:06,840 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:57:06,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2020-04-18 02:57:06,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 970. [2020-04-18 02:57:06,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 970 states. [2020-04-18 02:57:06,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 3408 transitions. [2020-04-18 02:57:06,879 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 3408 transitions. Word has length 12 [2020-04-18 02:57:06,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:57:06,879 INFO L479 AbstractCegarLoop]: Abstraction has 970 states and 3408 transitions. [2020-04-18 02:57:06,880 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:57:06,880 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 3408 transitions. [2020-04-18 02:57:06,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 02:57:06,882 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:57:06,882 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:57:06,882 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:57:06,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:57:06,882 INFO L82 PathProgramCache]: Analyzing trace with hash 847962781, now seen corresponding path program 1 times [2020-04-18 02:57:06,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:57:06,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618180869] [2020-04-18 02:57:06,885 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:57:06,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:57:06,985 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 02:57:06,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618180869] [2020-04-18 02:57:06,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:57:06,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:57:06,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063483809] [2020-04-18 02:57:06,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:57:06,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:57:06,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:57:06,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:57:06,990 INFO L87 Difference]: Start difference. First operand 970 states and 3408 transitions. Second operand 5 states. [2020-04-18 02:57:07,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:57:07,052 INFO L93 Difference]: Finished difference Result 1270 states and 4334 transitions. [2020-04-18 02:57:07,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:57:07,053 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-04-18 02:57:07,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:57:07,058 INFO L225 Difference]: With dead ends: 1270 [2020-04-18 02:57:07,058 INFO L226 Difference]: Without dead ends: 622 [2020-04-18 02:57:07,058 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-18 02:57:07,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2020-04-18 02:57:07,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 622. [2020-04-18 02:57:07,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 622 states. [2020-04-18 02:57:07,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 2024 transitions. [2020-04-18 02:57:07,079 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 2024 transitions. Word has length 13 [2020-04-18 02:57:07,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:57:07,080 INFO L479 AbstractCegarLoop]: Abstraction has 622 states and 2024 transitions. [2020-04-18 02:57:07,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:57:07,080 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 2024 transitions. [2020-04-18 02:57:07,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 02:57:07,081 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:57:07,082 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:57:07,082 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:57:07,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:57:07,082 INFO L82 PathProgramCache]: Analyzing trace with hash 364219121, now seen corresponding path program 1 times [2020-04-18 02:57:07,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:57:07,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774264540] [2020-04-18 02:57:07,083 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:57:07,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:57:07,175 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 02:57:07,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774264540] [2020-04-18 02:57:07,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:57:07,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:57:07,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537202605] [2020-04-18 02:57:07,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:57:07,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:57:07,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:57:07,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:57:07,180 INFO L87 Difference]: Start difference. First operand 622 states and 2024 transitions. Second operand 5 states. [2020-04-18 02:57:07,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:57:07,247 INFO L93 Difference]: Finished difference Result 670 states and 2116 transitions. [2020-04-18 02:57:07,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 02:57:07,247 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-04-18 02:57:07,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:57:07,252 INFO L225 Difference]: With dead ends: 670 [2020-04-18 02:57:07,252 INFO L226 Difference]: Without dead ends: 574 [2020-04-18 02:57:07,253 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 02:57:07,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2020-04-18 02:57:07,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 574. [2020-04-18 02:57:07,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 574 states. [2020-04-18 02:57:07,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 1836 transitions. [2020-04-18 02:57:07,271 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 1836 transitions. Word has length 14 [2020-04-18 02:57:07,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:57:07,271 INFO L479 AbstractCegarLoop]: Abstraction has 574 states and 1836 transitions. [2020-04-18 02:57:07,271 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:57:07,271 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 1836 transitions. [2020-04-18 02:57:07,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 02:57:07,273 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:57:07,273 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:57:07,273 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:57:07,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:57:07,274 INFO L82 PathProgramCache]: Analyzing trace with hash -1594133171, now seen corresponding path program 1 times [2020-04-18 02:57:07,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:57:07,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454320641] [2020-04-18 02:57:07,275 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:57:07,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:57:07,337 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 02:57:07,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454320641] [2020-04-18 02:57:07,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:57:07,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:57:07,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54556611] [2020-04-18 02:57:07,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:57:07,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:57:07,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:57:07,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:57:07,340 INFO L87 Difference]: Start difference. First operand 574 states and 1836 transitions. Second operand 5 states. [2020-04-18 02:57:07,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:57:07,406 INFO L93 Difference]: Finished difference Result 610 states and 1902 transitions. [2020-04-18 02:57:07,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 02:57:07,406 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-04-18 02:57:07,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:57:07,410 INFO L225 Difference]: With dead ends: 610 [2020-04-18 02:57:07,411 INFO L226 Difference]: Without dead ends: 538 [2020-04-18 02:57:07,411 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 02:57:07,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2020-04-18 02:57:07,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 538. [2020-04-18 02:57:07,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2020-04-18 02:57:07,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 1698 transitions. [2020-04-18 02:57:07,428 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 1698 transitions. Word has length 15 [2020-04-18 02:57:07,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:57:07,428 INFO L479 AbstractCegarLoop]: Abstraction has 538 states and 1698 transitions. [2020-04-18 02:57:07,428 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:57:07,428 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 1698 transitions. [2020-04-18 02:57:07,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 02:57:07,430 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:57:07,430 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:57:07,430 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:57:07,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:57:07,431 INFO L82 PathProgramCache]: Analyzing trace with hash 2121425426, now seen corresponding path program 1 times [2020-04-18 02:57:07,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:57:07,431 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538350681] [2020-04-18 02:57:07,431 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:57:07,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:57:07,499 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 02:57:07,499 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538350681] [2020-04-18 02:57:07,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:57:07,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 02:57:07,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705312944] [2020-04-18 02:57:07,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 02:57:07,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:57:07,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 02:57:07,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-04-18 02:57:07,501 INFO L87 Difference]: Start difference. First operand 538 states and 1698 transitions. Second operand 6 states. [2020-04-18 02:57:07,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:57:07,613 INFO L93 Difference]: Finished difference Result 676 states and 2093 transitions. [2020-04-18 02:57:07,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-04-18 02:57:07,614 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-04-18 02:57:07,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:57:07,618 INFO L225 Difference]: With dead ends: 676 [2020-04-18 02:57:07,618 INFO L226 Difference]: Without dead ends: 382 [2020-04-18 02:57:07,619 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-04-18 02:57:07,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2020-04-18 02:57:07,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2020-04-18 02:57:07,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2020-04-18 02:57:07,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1116 transitions. [2020-04-18 02:57:07,631 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1116 transitions. Word has length 16 [2020-04-18 02:57:07,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:57:07,632 INFO L479 AbstractCegarLoop]: Abstraction has 382 states and 1116 transitions. [2020-04-18 02:57:07,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 02:57:07,632 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1116 transitions. [2020-04-18 02:57:07,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 02:57:07,633 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:57:07,633 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:57:07,633 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:57:07,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:57:07,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1339206906, now seen corresponding path program 1 times [2020-04-18 02:57:07,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:57:07,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741053326] [2020-04-18 02:57:07,635 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:57:07,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:57:07,749 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 02:57:07,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741053326] [2020-04-18 02:57:07,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:57:07,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 02:57:07,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111936259] [2020-04-18 02:57:07,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 02:57:07,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:57:07,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 02:57:07,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-04-18 02:57:07,752 INFO L87 Difference]: Start difference. First operand 382 states and 1116 transitions. Second operand 6 states. [2020-04-18 02:57:07,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:57:07,856 INFO L93 Difference]: Finished difference Result 532 states and 1520 transitions. [2020-04-18 02:57:07,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-04-18 02:57:07,857 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-04-18 02:57:07,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:57:07,859 INFO L225 Difference]: With dead ends: 532 [2020-04-18 02:57:07,859 INFO L226 Difference]: Without dead ends: 220 [2020-04-18 02:57:07,860 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-04-18 02:57:07,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-04-18 02:57:07,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2020-04-18 02:57:07,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-04-18 02:57:07,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 592 transitions. [2020-04-18 02:57:07,867 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 592 transitions. Word has length 17 [2020-04-18 02:57:07,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:57:07,868 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 592 transitions. [2020-04-18 02:57:07,868 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 02:57:07,868 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 592 transitions. [2020-04-18 02:57:07,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 02:57:07,869 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:57:07,869 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:57:07,869 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:57:07,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:57:07,870 INFO L82 PathProgramCache]: Analyzing trace with hash 1157328918, now seen corresponding path program 1 times [2020-04-18 02:57:07,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:57:07,870 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131380175] [2020-04-18 02:57:07,871 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:57:07,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:57:07,921 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 02:57:07,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131380175] [2020-04-18 02:57:07,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:57:07,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:57:07,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840537291] [2020-04-18 02:57:07,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:57:07,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:57:07,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:57:07,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:57:07,924 INFO L87 Difference]: Start difference. First operand 220 states and 592 transitions. Second operand 5 states. [2020-04-18 02:57:07,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:57:07,959 INFO L93 Difference]: Finished difference Result 190 states and 497 transitions. [2020-04-18 02:57:07,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:57:07,959 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-04-18 02:57:07,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:57:07,960 INFO L225 Difference]: With dead ends: 190 [2020-04-18 02:57:07,960 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 02:57:07,961 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-18 02:57:07,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 02:57:07,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 02:57:07,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 02:57:07,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 02:57:07,962 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-04-18 02:57:07,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:57:07,962 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 02:57:07,962 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:57:07,962 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 02:57:07,963 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 02:57:07,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 02:57:07 BasicIcfg [2020-04-18 02:57:07,967 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 02:57:07,969 INFO L168 Benchmark]: Toolchain (without parser) took 5842.73 ms. Allocated memory was 143.1 MB in the beginning and 305.7 MB in the end (delta: 162.5 MB). Free memory was 99.3 MB in the beginning and 217.7 MB in the end (delta: -118.4 MB). Peak memory consumption was 44.1 MB. Max. memory is 7.1 GB. [2020-04-18 02:57:07,970 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 143.1 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-04-18 02:57:07,971 INFO L168 Benchmark]: CACSL2BoogieTranslator took 886.11 ms. Allocated memory was 143.1 MB in the beginning and 199.8 MB in the end (delta: 56.6 MB). Free memory was 97.3 MB in the beginning and 153.8 MB in the end (delta: -56.5 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. [2020-04-18 02:57:07,972 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.44 ms. Allocated memory is still 199.8 MB. Free memory was 153.8 MB in the beginning and 151.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-18 02:57:07,973 INFO L168 Benchmark]: Boogie Preprocessor took 35.42 ms. Allocated memory is still 199.8 MB. Free memory was 151.7 MB in the beginning and 150.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 02:57:07,974 INFO L168 Benchmark]: RCFGBuilder took 516.56 ms. Allocated memory is still 199.8 MB. Free memory was 150.2 MB in the beginning and 125.2 MB in the end (delta: 25.0 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. [2020-04-18 02:57:07,975 INFO L168 Benchmark]: TraceAbstraction took 4326.08 ms. Allocated memory was 199.8 MB in the beginning and 305.7 MB in the end (delta: 105.9 MB). Free memory was 124.5 MB in the beginning and 217.7 MB in the end (delta: -93.1 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-04-18 02:57:07,983 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 143.1 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 886.11 ms. Allocated memory was 143.1 MB in the beginning and 199.8 MB in the end (delta: 56.6 MB). Free memory was 97.3 MB in the beginning and 153.8 MB in the end (delta: -56.5 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 52.44 ms. Allocated memory is still 199.8 MB. Free memory was 153.8 MB in the beginning and 151.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 35.42 ms. Allocated memory is still 199.8 MB. Free memory was 151.7 MB in the beginning and 150.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 516.56 ms. Allocated memory is still 199.8 MB. Free memory was 150.2 MB in the beginning and 125.2 MB in the end (delta: 25.0 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4326.08 ms. Allocated memory was 199.8 MB in the beginning and 305.7 MB in the end (delta: 105.9 MB). Free memory was 124.5 MB in the beginning and 217.7 MB in the end (delta: -93.1 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 97 ProgramPointsBefore, 41 ProgramPointsAfterwards, 86 TransitionsBefore, 29 TransitionsAfterwards, 2016 CoEnabledTransitionPairs, 7 FixpointIterations, 17 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 1043 VarBasedMoverChecksPositive, 30 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 4485 CheckedPairsTotal, 67 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.2s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 234 SDtfs, 398 SDslu, 436 SDs, 0 SdLazy, 171 SolverSat, 43 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1450occurred 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: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 126 NumberOfCodeBlocks, 126 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 117 ConstructedInterpolants, 0 QuantifiedInterpolants, 7391 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...