/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe020_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c7e336b [2020-10-05 22:50:37,717 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-05 22:50:37,720 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-05 22:50:37,760 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-05 22:50:37,760 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-05 22:50:37,771 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-05 22:50:37,774 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-05 22:50:37,776 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-05 22:50:37,778 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-05 22:50:37,779 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-05 22:50:37,780 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-05 22:50:37,782 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-05 22:50:37,783 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-05 22:50:37,786 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-05 22:50:37,788 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-05 22:50:37,790 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-05 22:50:37,791 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-05 22:50:37,794 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-05 22:50:37,795 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-05 22:50:37,801 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-05 22:50:37,803 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-05 22:50:37,805 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-05 22:50:37,806 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-05 22:50:37,806 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-05 22:50:37,811 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-05 22:50:37,811 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-05 22:50:37,811 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-05 22:50:37,814 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-05 22:50:37,815 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-05 22:50:37,816 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-05 22:50:37,817 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-05 22:50:37,817 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-05 22:50:37,818 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-05 22:50:37,819 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-05 22:50:37,820 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-05 22:50:37,820 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-05 22:50:37,821 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-05 22:50:37,821 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-05 22:50:37,821 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-05 22:50:37,822 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-05 22:50:37,823 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-05 22:50:37,824 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-05 22:50:37,864 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-05 22:50:37,864 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-05 22:50:37,866 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-05 22:50:37,866 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-05 22:50:37,866 INFO L138 SettingsManager]: * Use SBE=true [2020-10-05 22:50:37,866 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-05 22:50:37,867 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-05 22:50:37,867 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-05 22:50:37,867 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-05 22:50:37,867 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-05 22:50:37,868 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-05 22:50:37,868 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-05 22:50:37,869 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-05 22:50:37,869 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-05 22:50:37,869 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-05 22:50:37,869 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-05 22:50:37,870 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-05 22:50:37,870 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-05 22:50:37,870 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-05 22:50:37,870 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-05 22:50:37,870 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-05 22:50:37,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-05 22:50:37,871 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-05 22:50:37,871 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-05 22:50:37,871 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-05 22:50:37,871 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-05 22:50:37,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-05 22:50:37,872 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-05 22:50:37,872 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-05 22:50:37,872 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-05 22:50:38,130 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-05 22:50:38,141 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-05 22:50:38,144 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-05 22:50:38,146 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-05 22:50:38,146 INFO L275 PluginConnector]: CDTParser initialized [2020-10-05 22:50:38,147 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe020_pso.oepc.i [2020-10-05 22:50:38,201 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de3b08235/c6528e8885744184a849a0583ec932c2/FLAGf3af565a3 [2020-10-05 22:50:38,691 INFO L306 CDTParser]: Found 1 translation units. [2020-10-05 22:50:38,692 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_pso.oepc.i [2020-10-05 22:50:38,720 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de3b08235/c6528e8885744184a849a0583ec932c2/FLAGf3af565a3 [2020-10-05 22:50:39,007 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de3b08235/c6528e8885744184a849a0583ec932c2 [2020-10-05 22:50:39,015 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-05 22:50:39,016 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-05 22:50:39,017 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-05 22:50:39,017 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-05 22:50:39,020 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-05 22:50:39,021 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 10:50:39" (1/1) ... [2020-10-05 22:50:39,024 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14ed2d6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:50:39, skipping insertion in model container [2020-10-05 22:50:39,024 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 10:50:39" (1/1) ... [2020-10-05 22:50:39,032 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-05 22:50:39,096 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-05 22:50:39,509 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-05 22:50:39,520 INFO L203 MainTranslator]: Completed pre-run [2020-10-05 22:50:39,565 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-05 22:50:39,645 INFO L208 MainTranslator]: Completed translation [2020-10-05 22:50:39,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:50:39 WrapperNode [2020-10-05 22:50:39,646 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-05 22:50:39,646 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-05 22:50:39,646 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-05 22:50:39,647 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-05 22:50:39,656 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:50:39" (1/1) ... [2020-10-05 22:50:39,672 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:50:39" (1/1) ... [2020-10-05 22:50:39,694 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-05 22:50:39,695 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-05 22:50:39,695 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-05 22:50:39,695 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-05 22:50:39,704 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:50:39" (1/1) ... [2020-10-05 22:50:39,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:50:39" (1/1) ... [2020-10-05 22:50:39,707 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:50:39" (1/1) ... [2020-10-05 22:50:39,707 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:50:39" (1/1) ... [2020-10-05 22:50:39,714 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:50:39" (1/1) ... [2020-10-05 22:50:39,716 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:50:39" (1/1) ... [2020-10-05 22:50:39,717 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:50:39" (1/1) ... [2020-10-05 22:50:39,720 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-05 22:50:39,721 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-05 22:50:39,721 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-05 22:50:39,721 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-05 22:50:39,722 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:50:39" (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 [2020-10-05 22:50:39,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-05 22:50:39,790 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-05 22:50:39,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-05 22:50:39,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-05 22:50:39,790 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-05 22:50:39,790 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-05 22:50:39,791 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-05 22:50:39,791 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-05 22:50:39,791 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-05 22:50:39,791 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-05 22:50:39,791 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-05 22:50:39,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-05 22:50:39,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-05 22:50:39,793 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-05 22:50:40,147 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-05 22:50:40,147 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-05 22:50:40,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 10:50:40 BoogieIcfgContainer [2020-10-05 22:50:40,150 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-05 22:50:40,152 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-05 22:50:40,152 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-05 22:50:40,155 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-05 22:50:40,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.10 10:50:39" (1/3) ... [2020-10-05 22:50:40,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f2f5d31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 10:50:40, skipping insertion in model container [2020-10-05 22:50:40,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:50:39" (2/3) ... [2020-10-05 22:50:40,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f2f5d31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 10:50:40, skipping insertion in model container [2020-10-05 22:50:40,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 10:50:40" (3/3) ... [2020-10-05 22:50:40,159 INFO L109 eAbstractionObserver]: Analyzing ICFG safe020_pso.oepc.i [2020-10-05 22:50:40,169 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-05 22:50:40,169 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-05 22:50:40,177 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-05 22:50:40,178 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-05 22:50:40,204 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:40,205 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:40,205 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:40,205 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:40,206 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:40,206 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:40,207 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:40,207 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:40,207 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:40,207 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:40,208 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:40,208 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:40,209 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:40,209 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:40,209 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:40,209 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:40,210 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:40,210 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:40,214 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:40,214 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:40,214 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:40,214 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:40,221 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:40,221 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:40,222 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:40,222 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:40,227 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:40,227 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:40,228 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:40,228 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:40,249 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-05 22:50:40,271 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-05 22:50:40,271 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-05 22:50:40,271 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-05 22:50:40,272 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-05 22:50:40,272 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-05 22:50:40,273 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-05 22:50:40,273 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-05 22:50:40,273 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-05 22:50:40,291 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 68 transitions, 151 flow [2020-10-05 22:50:40,292 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-10-05 22:50:40,330 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-10-05 22:50:40,330 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-05 22:50:40,335 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 45 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. [2020-10-05 22:50:40,338 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-10-05 22:50:40,358 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-10-05 22:50:40,359 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-05 22:50:40,359 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 45 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. [2020-10-05 22:50:40,361 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1178 [2020-10-05 22:50:40,363 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-10-05 22:50:41,668 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2244 [2020-10-05 22:50:41,668 INFO L214 etLargeBlockEncoding]: Total number of compositions: 56 [2020-10-05 22:50:41,672 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-05 22:50:41,695 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 274 states. [2020-10-05 22:50:41,697 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states. [2020-10-05 22:50:41,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-05 22:50:41,705 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:50:41,706 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:50:41,706 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:50:41,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:50:41,712 INFO L82 PathProgramCache]: Analyzing trace with hash 278619754, now seen corresponding path program 1 times [2020-10-05 22:50:41,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:50:41,722 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065815523] [2020-10-05 22:50:41,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:50:41,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:50:41,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:50:41,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065815523] [2020-10-05 22:50:41,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:50:41,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 22:50:41,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537847857] [2020-10-05 22:50:41,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-05 22:50:41,909 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:50:41,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-05 22:50:41,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-05 22:50:41,926 INFO L87 Difference]: Start difference. First operand 274 states. Second operand 2 states. [2020-10-05 22:50:41,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:50:41,973 INFO L93 Difference]: Finished difference Result 274 states and 786 transitions. [2020-10-05 22:50:41,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-05 22:50:41,975 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-05 22:50:41,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:50:41,997 INFO L225 Difference]: With dead ends: 274 [2020-10-05 22:50:41,997 INFO L226 Difference]: Without dead ends: 226 [2020-10-05 22:50:41,999 INFO L675 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 [2020-10-05 22:50:42,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-05 22:50:42,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-10-05 22:50:42,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-10-05 22:50:42,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 634 transitions. [2020-10-05 22:50:42,059 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 634 transitions. Word has length 8 [2020-10-05 22:50:42,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:50:42,060 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 634 transitions. [2020-10-05 22:50:42,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-05 22:50:42,060 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 634 transitions. [2020-10-05 22:50:42,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-05 22:50:42,061 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:50:42,061 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:50:42,062 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-05 22:50:42,062 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:50:42,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:50:42,063 INFO L82 PathProgramCache]: Analyzing trace with hash 47263938, now seen corresponding path program 1 times [2020-10-05 22:50:42,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:50:42,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880213554] [2020-10-05 22:50:42,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:50:42,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:50:42,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:50:42,201 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880213554] [2020-10-05 22:50:42,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:50:42,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 22:50:42,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361722966] [2020-10-05 22:50:42,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-05 22:50:42,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:50:42,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-05 22:50:42,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-05 22:50:42,205 INFO L87 Difference]: Start difference. First operand 226 states and 634 transitions. Second operand 5 states. [2020-10-05 22:50:42,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:50:42,270 INFO L93 Difference]: Finished difference Result 250 states and 668 transitions. [2020-10-05 22:50:42,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-05 22:50:42,271 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-05 22:50:42,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:50:42,273 INFO L225 Difference]: With dead ends: 250 [2020-10-05 22:50:42,274 INFO L226 Difference]: Without dead ends: 202 [2020-10-05 22:50:42,275 INFO L675 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 [2020-10-05 22:50:42,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-05 22:50:42,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-10-05 22:50:42,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-05 22:50:42,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 552 transitions. [2020-10-05 22:50:42,292 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 552 transitions. Word has length 9 [2020-10-05 22:50:42,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:50:42,292 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 552 transitions. [2020-10-05 22:50:42,293 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-05 22:50:42,293 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 552 transitions. [2020-10-05 22:50:42,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-05 22:50:42,294 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:50:42,294 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:50:42,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-05 22:50:42,295 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:50:42,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:50:42,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1465143248, now seen corresponding path program 1 times [2020-10-05 22:50:42,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:50:42,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387403439] [2020-10-05 22:50:42,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:50:42,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:50:42,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:50:42,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387403439] [2020-10-05 22:50:42,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:50:42,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 22:50:42,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864571161] [2020-10-05 22:50:42,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 22:50:42,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:50:42,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 22:50:42,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-05 22:50:42,388 INFO L87 Difference]: Start difference. First operand 202 states and 552 transitions. Second operand 4 states. [2020-10-05 22:50:42,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:50:42,411 INFO L93 Difference]: Finished difference Result 232 states and 608 transitions. [2020-10-05 22:50:42,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-05 22:50:42,411 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-05 22:50:42,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:50:42,415 INFO L225 Difference]: With dead ends: 232 [2020-10-05 22:50:42,415 INFO L226 Difference]: Without dead ends: 196 [2020-10-05 22:50:42,416 INFO L675 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 [2020-10-05 22:50:42,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-05 22:50:42,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2020-10-05 22:50:42,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-05 22:50:42,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 530 transitions. [2020-10-05 22:50:42,443 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 530 transitions. Word has length 10 [2020-10-05 22:50:42,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:50:42,444 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 530 transitions. [2020-10-05 22:50:42,444 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 22:50:42,444 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 530 transitions. [2020-10-05 22:50:42,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 22:50:42,446 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:50:42,446 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:50:42,447 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-05 22:50:42,447 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:50:42,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:50:42,447 INFO L82 PathProgramCache]: Analyzing trace with hash 462854661, now seen corresponding path program 1 times [2020-10-05 22:50:42,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:50:42,448 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182715357] [2020-10-05 22:50:42,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:50:42,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:50:42,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:50:42,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182715357] [2020-10-05 22:50:42,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:50:42,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 22:50:42,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862244590] [2020-10-05 22:50:42,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-05 22:50:42,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:50:42,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-05 22:50:42,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-05 22:50:42,566 INFO L87 Difference]: Start difference. First operand 196 states and 530 transitions. Second operand 5 states. [2020-10-05 22:50:42,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:50:42,618 INFO L93 Difference]: Finished difference Result 255 states and 672 transitions. [2020-10-05 22:50:42,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-05 22:50:42,618 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-05 22:50:42,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:50:42,620 INFO L225 Difference]: With dead ends: 255 [2020-10-05 22:50:42,620 INFO L226 Difference]: Without dead ends: 150 [2020-10-05 22:50:42,620 INFO L675 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 [2020-10-05 22:50:42,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-05 22:50:42,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2020-10-05 22:50:42,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-05 22:50:42,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 378 transitions. [2020-10-05 22:50:42,628 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 378 transitions. Word has length 11 [2020-10-05 22:50:42,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:50:42,628 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 378 transitions. [2020-10-05 22:50:42,628 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-05 22:50:42,628 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 378 transitions. [2020-10-05 22:50:42,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:50:42,630 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:50:42,630 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:50:42,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-05 22:50:42,630 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:50:42,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:50:42,631 INFO L82 PathProgramCache]: Analyzing trace with hash 266026162, now seen corresponding path program 1 times [2020-10-05 22:50:42,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:50:42,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198418284] [2020-10-05 22:50:42,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:50:42,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:50:42,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:50:42,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198418284] [2020-10-05 22:50:42,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:50:42,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 22:50:42,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735484980] [2020-10-05 22:50:42,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 22:50:42,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:50:42,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 22:50:42,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-05 22:50:42,687 INFO L87 Difference]: Start difference. First operand 150 states and 378 transitions. Second operand 4 states. [2020-10-05 22:50:42,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:50:42,734 INFO L93 Difference]: Finished difference Result 164 states and 376 transitions. [2020-10-05 22:50:42,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-05 22:50:42,734 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-05 22:50:42,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:50:42,737 INFO L225 Difference]: With dead ends: 164 [2020-10-05 22:50:42,737 INFO L226 Difference]: Without dead ends: 128 [2020-10-05 22:50:42,738 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-05 22:50:42,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-05 22:50:42,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2020-10-05 22:50:42,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-05 22:50:42,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 293 transitions. [2020-10-05 22:50:42,750 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 293 transitions. Word has length 12 [2020-10-05 22:50:42,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:50:42,751 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 293 transitions. [2020-10-05 22:50:42,751 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 22:50:42,751 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 293 transitions. [2020-10-05 22:50:42,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:50:42,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:50:42,753 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:50:42,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-05 22:50:42,753 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:50:42,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:50:42,754 INFO L82 PathProgramCache]: Analyzing trace with hash -1292455845, now seen corresponding path program 1 times [2020-10-05 22:50:42,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:50:42,758 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20188466] [2020-10-05 22:50:42,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:50:42,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:50:42,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:50:42,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20188466] [2020-10-05 22:50:42,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:50:42,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-05 22:50:42,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711849338] [2020-10-05 22:50:42,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-05 22:50:42,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:50:42,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-05 22:50:42,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-05 22:50:42,808 INFO L87 Difference]: Start difference. First operand 128 states and 293 transitions. Second operand 5 states. [2020-10-05 22:50:42,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:50:42,849 INFO L93 Difference]: Finished difference Result 116 states and 240 transitions. [2020-10-05 22:50:42,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-05 22:50:42,849 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-05 22:50:42,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:50:42,850 INFO L225 Difference]: With dead ends: 116 [2020-10-05 22:50:42,850 INFO L226 Difference]: Without dead ends: 92 [2020-10-05 22:50:42,851 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-05 22:50:42,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-05 22:50:42,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-10-05 22:50:42,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-05 22:50:42,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 186 transitions. [2020-10-05 22:50:42,854 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 186 transitions. Word has length 13 [2020-10-05 22:50:42,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:50:42,854 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 186 transitions. [2020-10-05 22:50:42,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-05 22:50:42,855 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 186 transitions. [2020-10-05 22:50:42,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:50:42,856 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:50:42,856 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:50:42,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-05 22:50:42,856 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:50:42,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:50:42,857 INFO L82 PathProgramCache]: Analyzing trace with hash -228576461, now seen corresponding path program 1 times [2020-10-05 22:50:42,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:50:42,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656886213] [2020-10-05 22:50:42,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:50:42,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:50:42,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:50:42,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656886213] [2020-10-05 22:50:42,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:50:42,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 22:50:42,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320287786] [2020-10-05 22:50:42,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 22:50:42,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:50:42,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 22:50:42,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-05 22:50:42,899 INFO L87 Difference]: Start difference. First operand 92 states and 186 transitions. Second operand 4 states. [2020-10-05 22:50:42,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:50:42,916 INFO L93 Difference]: Finished difference Result 120 states and 228 transitions. [2020-10-05 22:50:42,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-05 22:50:42,917 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-05 22:50:42,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:50:42,918 INFO L225 Difference]: With dead ends: 120 [2020-10-05 22:50:42,918 INFO L226 Difference]: Without dead ends: 94 [2020-10-05 22:50:42,918 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-05 22:50:42,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-05 22:50:42,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 90. [2020-10-05 22:50:42,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-05 22:50:42,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 175 transitions. [2020-10-05 22:50:42,922 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 175 transitions. Word has length 14 [2020-10-05 22:50:42,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:50:42,922 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 175 transitions. [2020-10-05 22:50:42,922 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 22:50:42,922 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 175 transitions. [2020-10-05 22:50:42,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-05 22:50:42,923 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:50:42,923 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:50:42,923 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-05 22:50:42,924 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:50:42,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:50:42,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1357686433, now seen corresponding path program 1 times [2020-10-05 22:50:42,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:50:42,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963784187] [2020-10-05 22:50:42,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:50:42,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:50:43,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:50:43,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963784187] [2020-10-05 22:50:43,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:50:43,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-05 22:50:43,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496944554] [2020-10-05 22:50:43,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-05 22:50:43,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:50:43,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-05 22:50:43,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-05 22:50:43,010 INFO L87 Difference]: Start difference. First operand 90 states and 175 transitions. Second operand 9 states. [2020-10-05 22:50:43,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:50:43,144 INFO L93 Difference]: Finished difference Result 119 states and 221 transitions. [2020-10-05 22:50:43,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-05 22:50:43,144 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-10-05 22:50:43,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:50:43,145 INFO L225 Difference]: With dead ends: 119 [2020-10-05 22:50:43,145 INFO L226 Difference]: Without dead ends: 76 [2020-10-05 22:50:43,146 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-05 22:50:43,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-05 22:50:43,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 72. [2020-10-05 22:50:43,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-05 22:50:43,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 123 transitions. [2020-10-05 22:50:43,148 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 123 transitions. Word has length 15 [2020-10-05 22:50:43,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:50:43,149 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 123 transitions. [2020-10-05 22:50:43,149 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-05 22:50:43,149 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 123 transitions. [2020-10-05 22:50:43,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-05 22:50:43,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:50:43,150 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:50:43,150 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-05 22:50:43,150 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:50:43,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:50:43,151 INFO L82 PathProgramCache]: Analyzing trace with hash 1504039886, now seen corresponding path program 1 times [2020-10-05 22:50:43,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:50:43,151 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754616289] [2020-10-05 22:50:43,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:50:43,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:50:43,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:50:43,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754616289] [2020-10-05 22:50:43,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:50:43,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-05 22:50:43,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539528284] [2020-10-05 22:50:43,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-05 22:50:43,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:50:43,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-05 22:50:43,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-05 22:50:43,242 INFO L87 Difference]: Start difference. First operand 72 states and 123 transitions. Second operand 6 states. [2020-10-05 22:50:43,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:50:43,291 INFO L93 Difference]: Finished difference Result 65 states and 108 transitions. [2020-10-05 22:50:43,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-05 22:50:43,292 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-05 22:50:43,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:50:43,292 INFO L225 Difference]: With dead ends: 65 [2020-10-05 22:50:43,293 INFO L226 Difference]: Without dead ends: 28 [2020-10-05 22:50:43,293 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-05 22:50:43,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-05 22:50:43,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-05 22:50:43,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-05 22:50:43,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2020-10-05 22:50:43,295 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 15 [2020-10-05 22:50:43,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:50:43,296 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2020-10-05 22:50:43,296 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-05 22:50:43,296 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2020-10-05 22:50:43,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-05 22:50:43,296 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:50:43,297 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:50:43,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-05 22:50:43,297 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:50:43,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:50:43,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1777188338, now seen corresponding path program 1 times [2020-10-05 22:50:43,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:50:43,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452984523] [2020-10-05 22:50:43,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:50:43,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:50:43,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:50:43,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452984523] [2020-10-05 22:50:43,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:50:43,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-05 22:50:43,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208247002] [2020-10-05 22:50:43,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-05 22:50:43,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:50:43,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-05 22:50:43,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-05 22:50:43,460 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand 10 states. [2020-10-05 22:50:43,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:50:43,532 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2020-10-05 22:50:43,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-05 22:50:43,532 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-10-05 22:50:43,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:50:43,533 INFO L225 Difference]: With dead ends: 27 [2020-10-05 22:50:43,533 INFO L226 Difference]: Without dead ends: 0 [2020-10-05 22:50:43,533 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-05 22:50:43,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-05 22:50:43,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-05 22:50:43,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-05 22:50:43,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-05 22:50:43,534 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-05 22:50:43,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:50:43,534 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-05 22:50:43,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-05 22:50:43,535 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-05 22:50:43,535 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-05 22:50:43,535 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-05 22:50:43,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.10 10:50:43 BasicIcfg [2020-10-05 22:50:43,539 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-05 22:50:43,541 INFO L168 Benchmark]: Toolchain (without parser) took 4524.30 ms. Allocated memory was 141.0 MB in the beginning and 245.4 MB in the end (delta: 104.3 MB). Free memory was 102.7 MB in the beginning and 93.8 MB in the end (delta: 8.9 MB). Peak memory consumption was 113.2 MB. Max. memory is 7.1 GB. [2020-10-05 22:50:43,542 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-10-05 22:50:43,543 INFO L168 Benchmark]: CACSL2BoogieTranslator took 629.06 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 102.5 MB in the beginning and 160.5 MB in the end (delta: -58.0 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. [2020-10-05 22:50:43,543 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.31 ms. Allocated memory is still 205.0 MB. Free memory was 159.8 MB in the beginning and 157.6 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2020-10-05 22:50:43,544 INFO L168 Benchmark]: Boogie Preprocessor took 25.75 ms. Allocated memory is still 205.0 MB. Free memory was 157.6 MB in the beginning and 156.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-05 22:50:43,545 INFO L168 Benchmark]: RCFGBuilder took 429.12 ms. Allocated memory is still 205.0 MB. Free memory was 156.3 MB in the beginning and 134.3 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-10-05 22:50:43,546 INFO L168 Benchmark]: TraceAbstraction took 3387.08 ms. Allocated memory was 205.0 MB in the beginning and 245.4 MB in the end (delta: 40.4 MB). Free memory was 133.7 MB in the beginning and 93.8 MB in the end (delta: 39.8 MB). Peak memory consumption was 80.2 MB. Max. memory is 7.1 GB. [2020-10-05 22:50:43,550 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 629.06 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 102.5 MB in the beginning and 160.5 MB in the end (delta: -58.0 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 48.31 ms. Allocated memory is still 205.0 MB. Free memory was 159.8 MB in the beginning and 157.6 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.75 ms. Allocated memory is still 205.0 MB. Free memory was 157.6 MB in the beginning and 156.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 429.12 ms. Allocated memory is still 205.0 MB. Free memory was 156.3 MB in the beginning and 134.3 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3387.08 ms. Allocated memory was 205.0 MB in the beginning and 245.4 MB in the end (delta: 40.4 MB). Free memory was 133.7 MB in the beginning and 93.8 MB in the end (delta: 39.8 MB). Peak memory consumption was 80.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.3s, 76 ProgramPointsBefore, 31 ProgramPointsAfterwards, 68 TransitionsBefore, 22 TransitionsAfterwards, 1178 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 609 VarBasedMoverChecksPositive, 27 VarBasedMoverChecksNegative, 8 SemBasedMoverChecksPositive, 28 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 2244 CheckedPairsTotal, 56 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 4 procedures, 67 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.2s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 192 SDtfs, 215 SDslu, 432 SDs, 0 SdLazy, 296 SolverSat, 45 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 57 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=274occurred 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: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 8 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 124 NumberOfCodeBlocks, 124 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 6142 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...