/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 13:40:15,631 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 13:40:15,634 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 13:40:15,678 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 13:40:15,679 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 13:40:15,680 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 13:40:15,690 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 13:40:15,694 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 13:40:15,697 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 13:40:15,699 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 13:40:15,700 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 13:40:15,701 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 13:40:15,702 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 13:40:15,704 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 13:40:15,706 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 13:40:15,708 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 13:40:15,710 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 13:40:15,712 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 13:40:15,714 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 13:40:15,721 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 13:40:15,723 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 13:40:15,724 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 13:40:15,725 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 13:40:15,726 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 13:40:15,739 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 13:40:15,745 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 13:40:15,746 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 13:40:15,747 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 13:40:15,747 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 13:40:15,750 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 13:40:15,751 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 13:40:15,751 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 13:40:15,752 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 13:40:15,752 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 13:40:15,752 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 13:40:15,758 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 13:40:15,759 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-10-16 13:40:15,797 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 13:40:15,797 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 13:40:15,800 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 13:40:15,800 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 13:40:15,800 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 13:40:15,800 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 13:40:15,800 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 13:40:15,801 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 13:40:15,801 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 13:40:15,801 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 13:40:15,802 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 13:40:15,802 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 13:40:15,802 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 13:40:15,803 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 13:40:15,803 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 13:40:15,803 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 13:40:15,803 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 13:40:15,804 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 13:40:15,804 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 13:40:15,804 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 13:40:15,804 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 13:40:15,804 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 13:40:15,805 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 13:40:15,805 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-16 13:40:15,805 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 13:40:15,806 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 13:40:15,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 13:40:15,806 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-16 13:40:15,806 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-16 13:40:15,806 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 13:40:15,806 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-16 13:40:16,117 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 13:40:16,127 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 13:40:16,130 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 13:40:16,131 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 13:40:16,132 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 13:40:16,133 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.oepc.i [2020-10-16 13:40:16,197 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/507805818/640f7b396a464e70b851ed71ab47998d/FLAGa9c2b4957 [2020-10-16 13:40:16,745 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 13:40:16,749 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe017_tso.oepc.i [2020-10-16 13:40:16,772 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/507805818/640f7b396a464e70b851ed71ab47998d/FLAGa9c2b4957 [2020-10-16 13:40:17,060 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/507805818/640f7b396a464e70b851ed71ab47998d [2020-10-16 13:40:17,070 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 13:40:17,072 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 13:40:17,073 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 13:40:17,073 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 13:40:17,076 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 13:40:17,077 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:40:17" (1/1) ... [2020-10-16 13:40:17,080 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f018203 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:40:17, skipping insertion in model container [2020-10-16 13:40:17,081 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:40:17" (1/1) ... [2020-10-16 13:40:17,089 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 13:40:17,131 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 13:40:17,607 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 13:40:17,618 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 13:40:17,662 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 13:40:17,752 INFO L208 MainTranslator]: Completed translation [2020-10-16 13:40:17,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:40:17 WrapperNode [2020-10-16 13:40:17,754 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 13:40:17,755 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 13:40:17,755 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 13:40:17,755 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 13:40:17,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:40:17" (1/1) ... [2020-10-16 13:40:17,811 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:40:17" (1/1) ... [2020-10-16 13:40:17,845 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 13:40:17,846 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 13:40:17,846 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 13:40:17,846 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 13:40:17,855 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:40:17" (1/1) ... [2020-10-16 13:40:17,856 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:40:17" (1/1) ... [2020-10-16 13:40:17,862 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:40:17" (1/1) ... [2020-10-16 13:40:17,862 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:40:17" (1/1) ... [2020-10-16 13:40:17,869 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:40:17" (1/1) ... [2020-10-16 13:40:17,871 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:40:17" (1/1) ... [2020-10-16 13:40:17,873 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:40:17" (1/1) ... [2020-10-16 13:40:17,876 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 13:40:17,877 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 13:40:17,877 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 13:40:17,877 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 13:40:17,878 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:40:17" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 13:40:17,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 13:40:17,947 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 13:40:17,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 13:40:17,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 13:40:17,947 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 13:40:17,947 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 13:40:17,947 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 13:40:17,948 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 13:40:17,948 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 13:40:17,948 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 13:40:17,948 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 13:40:17,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 13:40:17,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 13:40:17,950 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 13:40:18,320 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 13:40:18,321 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 13:40:18,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:40:18 BoogieIcfgContainer [2020-10-16 13:40:18,323 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 13:40:18,325 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 13:40:18,325 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 13:40:18,328 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 13:40:18,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:40:17" (1/3) ... [2020-10-16 13:40:18,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2df24ab9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:40:18, skipping insertion in model container [2020-10-16 13:40:18,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:40:17" (2/3) ... [2020-10-16 13:40:18,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2df24ab9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:40:18, skipping insertion in model container [2020-10-16 13:40:18,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:40:18" (3/3) ... [2020-10-16 13:40:18,332 INFO L111 eAbstractionObserver]: Analyzing ICFG safe017_tso.oepc.i [2020-10-16 13:40:18,344 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 13:40:18,345 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-16 13:40:18,353 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 13:40:18,354 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 13:40:18,382 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:40:18,383 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:40:18,383 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:40:18,383 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:40:18,384 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:40:18,384 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:40:18,385 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:40:18,385 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:40:18,385 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:40:18,386 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:40:18,386 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:40:18,386 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:40:18,387 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:40:18,387 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:40:18,387 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:40:18,387 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:40:18,388 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:40:18,388 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:40:18,392 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:40:18,393 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:40:18,393 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:40:18,393 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:40:18,400 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:40:18,400 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:40:18,401 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:40:18,401 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:40:18,406 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:40:18,406 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:40:18,406 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:40:18,406 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:40:18,408 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 13:40:18,423 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 13:40:18,443 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 13:40:18,444 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 13:40:18,444 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 13:40:18,444 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-16 13:40:18,444 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 13:40:18,444 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 13:40:18,444 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 13:40:18,445 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 13:40:18,456 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 13:40:18,457 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 67 transitions, 149 flow [2020-10-16 13:40:18,459 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 75 places, 67 transitions, 149 flow [2020-10-16 13:40:18,461 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 75 places, 67 transitions, 149 flow [2020-10-16 13:40:18,501 INFO L129 PetriNetUnfolder]: 2/64 cut-off events. [2020-10-16 13:40:18,501 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 13:40:18,506 INFO L80 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 64 events. 2/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-10-16 13:40:18,509 INFO L117 LiptonReduction]: Number of co-enabled transitions 1178 [2020-10-16 13:40:19,801 INFO L132 LiptonReduction]: Checked pairs total: 1902 [2020-10-16 13:40:19,801 INFO L134 LiptonReduction]: Total number of compositions: 54 [2020-10-16 13:40:19,808 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 20 transitions, 55 flow [2020-10-16 13:40:19,830 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 226 states. [2020-10-16 13:40:19,833 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states. [2020-10-16 13:40:19,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 13:40:19,840 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:40:19,841 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:40:19,842 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:40:19,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:40:19,848 INFO L82 PathProgramCache]: Analyzing trace with hash -540517404, now seen corresponding path program 1 times [2020-10-16 13:40:19,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:40:19,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61796998] [2020-10-16 13:40:19,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:40:19,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:40:20,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:40:20,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61796998] [2020-10-16 13:40:20,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:40:20,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 13:40:20,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1588362394] [2020-10-16 13:40:20,091 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:40:20,094 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:40:20,109 INFO L258 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-16 13:40:20,110 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:40:20,114 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:40:20,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 13:40:20,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:40:20,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 13:40:20,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:40:20,132 INFO L87 Difference]: Start difference. First operand 226 states. Second operand 3 states. [2020-10-16 13:40:20,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:40:20,165 INFO L93 Difference]: Finished difference Result 220 states and 612 transitions. [2020-10-16 13:40:20,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 13:40:20,167 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-16 13:40:20,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:40:20,181 INFO L225 Difference]: With dead ends: 220 [2020-10-16 13:40:20,181 INFO L226 Difference]: Without dead ends: 172 [2020-10-16 13:40:20,182 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:40:20,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-16 13:40:20,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2020-10-16 13:40:20,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-16 13:40:20,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 460 transitions. [2020-10-16 13:40:20,244 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 460 transitions. Word has length 8 [2020-10-16 13:40:20,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:40:20,245 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 460 transitions. [2020-10-16 13:40:20,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 13:40:20,245 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 460 transitions. [2020-10-16 13:40:20,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 13:40:20,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:40:20,247 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:40:20,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 13:40:20,247 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:40:20,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:40:20,248 INFO L82 PathProgramCache]: Analyzing trace with hash 533202091, now seen corresponding path program 1 times [2020-10-16 13:40:20,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:40:20,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121183557] [2020-10-16 13:40:20,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:40:20,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:40:20,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:40:20,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121183557] [2020-10-16 13:40:20,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:40:20,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 13:40:20,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1173026899] [2020-10-16 13:40:20,309 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:40:20,310 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:40:20,313 INFO L258 McrAutomatonBuilder]: Finished intersection with 15 states and 19 transitions. [2020-10-16 13:40:20,313 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:40:20,370 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:40:20,372 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 13:40:20,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:40:20,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 13:40:20,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:40:20,373 INFO L87 Difference]: Start difference. First operand 172 states and 460 transitions. Second operand 3 states. [2020-10-16 13:40:20,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:40:20,381 INFO L93 Difference]: Finished difference Result 163 states and 430 transitions. [2020-10-16 13:40:20,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 13:40:20,382 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-16 13:40:20,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:40:20,385 INFO L225 Difference]: With dead ends: 163 [2020-10-16 13:40:20,385 INFO L226 Difference]: Without dead ends: 163 [2020-10-16 13:40:20,386 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:40:20,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-16 13:40:20,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-10-16 13:40:20,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-16 13:40:20,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 430 transitions. [2020-10-16 13:40:20,405 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 430 transitions. Word has length 9 [2020-10-16 13:40:20,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:40:20,406 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 430 transitions. [2020-10-16 13:40:20,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 13:40:20,406 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 430 transitions. [2020-10-16 13:40:20,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 13:40:20,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:40:20,407 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:40:20,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 13:40:20,408 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:40:20,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:40:20,408 INFO L82 PathProgramCache]: Analyzing trace with hash -650627585, now seen corresponding path program 1 times [2020-10-16 13:40:20,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:40:20,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812848583] [2020-10-16 13:40:20,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:40:20,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:40:20,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:40:20,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812848583] [2020-10-16 13:40:20,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:40:20,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:40:20,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1441989005] [2020-10-16 13:40:20,531 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:40:20,533 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:40:20,537 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 27 transitions. [2020-10-16 13:40:20,537 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:40:20,599 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:40:20,600 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:40:20,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:40:20,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:40:20,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:40:20,601 INFO L87 Difference]: Start difference. First operand 163 states and 430 transitions. Second operand 4 states. [2020-10-16 13:40:20,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:40:20,627 INFO L93 Difference]: Finished difference Result 218 states and 560 transitions. [2020-10-16 13:40:20,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 13:40:20,627 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-16 13:40:20,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:40:20,629 INFO L225 Difference]: With dead ends: 218 [2020-10-16 13:40:20,629 INFO L226 Difference]: Without dead ends: 146 [2020-10-16 13:40:20,630 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:40:20,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-16 13:40:20,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-10-16 13:40:20,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-16 13:40:20,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 370 transitions. [2020-10-16 13:40:20,645 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 370 transitions. Word has length 10 [2020-10-16 13:40:20,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:40:20,646 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 370 transitions. [2020-10-16 13:40:20,646 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:40:20,646 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 370 transitions. [2020-10-16 13:40:20,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 13:40:20,647 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:40:20,647 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:40:20,648 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 13:40:20,648 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:40:20,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:40:20,648 INFO L82 PathProgramCache]: Analyzing trace with hash 1306080051, now seen corresponding path program 1 times [2020-10-16 13:40:20,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:40:20,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634364681] [2020-10-16 13:40:20,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:40:20,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:40:20,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:40:20,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634364681] [2020-10-16 13:40:20,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:40:20,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:40:20,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1453332813] [2020-10-16 13:40:20,754 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:40:20,756 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:40:20,759 INFO L258 McrAutomatonBuilder]: Finished intersection with 27 states and 45 transitions. [2020-10-16 13:40:20,759 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:40:20,780 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:40:20,809 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:40:20,831 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:40:20,897 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:40:20,964 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:40:20,995 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2109#(not (= 3 ~__unbuffered_cnt~0))] [2020-10-16 13:40:20,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:40:20,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:40:20,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:40:20,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:40:20,997 INFO L87 Difference]: Start difference. First operand 146 states and 370 transitions. Second operand 5 states. [2020-10-16 13:40:21,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:40:21,054 INFO L93 Difference]: Finished difference Result 135 states and 311 transitions. [2020-10-16 13:40:21,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 13:40:21,055 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-16 13:40:21,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:40:21,056 INFO L225 Difference]: With dead ends: 135 [2020-10-16 13:40:21,056 INFO L226 Difference]: Without dead ends: 93 [2020-10-16 13:40:21,057 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:40:21,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-16 13:40:21,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2020-10-16 13:40:21,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-16 13:40:21,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 192 transitions. [2020-10-16 13:40:21,064 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 192 transitions. Word has length 11 [2020-10-16 13:40:21,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:40:21,065 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 192 transitions. [2020-10-16 13:40:21,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:40:21,065 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 192 transitions. [2020-10-16 13:40:21,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 13:40:21,066 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:40:21,066 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:40:21,067 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 13:40:21,067 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:40:21,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:40:21,067 INFO L82 PathProgramCache]: Analyzing trace with hash 589619789, now seen corresponding path program 1 times [2020-10-16 13:40:21,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:40:21,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158484878] [2020-10-16 13:40:21,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:40:21,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:40:21,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:40:21,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158484878] [2020-10-16 13:40:21,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:40:21,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:40:21,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1910370700] [2020-10-16 13:40:21,105 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:40:21,106 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:40:21,109 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 25 transitions. [2020-10-16 13:40:21,109 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:40:21,112 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:40:21,113 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 13:40:21,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:40:21,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 13:40:21,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:40:21,114 INFO L87 Difference]: Start difference. First operand 93 states and 192 transitions. Second operand 3 states. [2020-10-16 13:40:21,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:40:21,121 INFO L93 Difference]: Finished difference Result 110 states and 218 transitions. [2020-10-16 13:40:21,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 13:40:21,122 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-10-16 13:40:21,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:40:21,123 INFO L225 Difference]: With dead ends: 110 [2020-10-16 13:40:21,123 INFO L226 Difference]: Without dead ends: 88 [2020-10-16 13:40:21,124 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:40:21,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-16 13:40:21,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2020-10-16 13:40:21,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-16 13:40:21,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 169 transitions. [2020-10-16 13:40:21,129 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 169 transitions. Word has length 13 [2020-10-16 13:40:21,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:40:21,130 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 169 transitions. [2020-10-16 13:40:21,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 13:40:21,130 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 169 transitions. [2020-10-16 13:40:21,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 13:40:21,131 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:40:21,131 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:40:21,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 13:40:21,132 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:40:21,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:40:21,132 INFO L82 PathProgramCache]: Analyzing trace with hash 205369494, now seen corresponding path program 1 times [2020-10-16 13:40:21,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:40:21,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846389231] [2020-10-16 13:40:21,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:40:21,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:40:21,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:40:21,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846389231] [2020-10-16 13:40:21,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:40:21,179 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:40:21,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [568149317] [2020-10-16 13:40:21,179 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:40:21,181 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:40:21,186 INFO L258 McrAutomatonBuilder]: Finished intersection with 38 states and 64 transitions. [2020-10-16 13:40:21,186 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:40:21,191 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:40:21,192 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 13:40:21,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:40:21,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 13:40:21,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:40:21,193 INFO L87 Difference]: Start difference. First operand 86 states and 169 transitions. Second operand 3 states. [2020-10-16 13:40:21,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:40:21,219 INFO L93 Difference]: Finished difference Result 104 states and 195 transitions. [2020-10-16 13:40:21,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 13:40:21,219 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-10-16 13:40:21,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:40:21,220 INFO L225 Difference]: With dead ends: 104 [2020-10-16 13:40:21,220 INFO L226 Difference]: Without dead ends: 66 [2020-10-16 13:40:21,221 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:40:21,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-16 13:40:21,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-16 13:40:21,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-16 13:40:21,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 111 transitions. [2020-10-16 13:40:21,225 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 111 transitions. Word has length 14 [2020-10-16 13:40:21,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:40:21,225 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 111 transitions. [2020-10-16 13:40:21,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 13:40:21,226 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 111 transitions. [2020-10-16 13:40:21,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 13:40:21,227 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:40:21,227 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:40:21,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 13:40:21,227 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:40:21,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:40:21,228 INFO L82 PathProgramCache]: Analyzing trace with hash -610616562, now seen corresponding path program 2 times [2020-10-16 13:40:21,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:40:21,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483008918] [2020-10-16 13:40:21,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:40:21,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:40:21,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:40:21,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483008918] [2020-10-16 13:40:21,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:40:21,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:40:21,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2094071819] [2020-10-16 13:40:21,266 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:40:21,268 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:40:21,273 INFO L258 McrAutomatonBuilder]: Finished intersection with 35 states and 56 transitions. [2020-10-16 13:40:21,273 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:40:21,289 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:40:21,289 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:40:21,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:40:21,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:40:21,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:40:21,290 INFO L87 Difference]: Start difference. First operand 65 states and 111 transitions. Second operand 4 states. [2020-10-16 13:40:21,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:40:21,309 INFO L93 Difference]: Finished difference Result 71 states and 116 transitions. [2020-10-16 13:40:21,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 13:40:21,310 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-16 13:40:21,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:40:21,311 INFO L225 Difference]: With dead ends: 71 [2020-10-16 13:40:21,311 INFO L226 Difference]: Without dead ends: 64 [2020-10-16 13:40:21,312 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:40:21,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-16 13:40:21,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-10-16 13:40:21,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-16 13:40:21,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 106 transitions. [2020-10-16 13:40:21,316 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 106 transitions. Word has length 14 [2020-10-16 13:40:21,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:40:21,316 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 106 transitions. [2020-10-16 13:40:21,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:40:21,316 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 106 transitions. [2020-10-16 13:40:21,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 13:40:21,317 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:40:21,317 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:40:21,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 13:40:21,318 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:40:21,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:40:21,318 INFO L82 PathProgramCache]: Analyzing trace with hash -375565572, now seen corresponding path program 3 times [2020-10-16 13:40:21,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:40:21,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064664120] [2020-10-16 13:40:21,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:40:21,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:40:21,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:40:21,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064664120] [2020-10-16 13:40:21,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:40:21,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 13:40:21,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [67054823] [2020-10-16 13:40:21,413 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:40:21,415 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:40:21,421 INFO L258 McrAutomatonBuilder]: Finished intersection with 48 states and 82 transitions. [2020-10-16 13:40:21,421 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:40:21,441 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:40:21,549 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3166#(<= ~__unbuffered_cnt~0 0)] [2020-10-16 13:40:21,549 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 13:40:21,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:40:21,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 13:40:21,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:40:21,550 INFO L87 Difference]: Start difference. First operand 63 states and 106 transitions. Second operand 7 states. [2020-10-16 13:40:21,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:40:21,592 INFO L93 Difference]: Finished difference Result 58 states and 100 transitions. [2020-10-16 13:40:21,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 13:40:21,592 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-10-16 13:40:21,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:40:21,593 INFO L225 Difference]: With dead ends: 58 [2020-10-16 13:40:21,593 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 13:40:21,593 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-16 13:40:21,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 13:40:21,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 13:40:21,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 13:40:21,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 13:40:21,595 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-10-16 13:40:21,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:40:21,595 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 13:40:21,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 13:40:21,595 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 13:40:21,595 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 13:40:21,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 13:40:21,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:40:21 BasicIcfg [2020-10-16 13:40:21,600 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 13:40:21,607 INFO L168 Benchmark]: Toolchain (without parser) took 4530.29 ms. Allocated memory was 139.5 MB in the beginning and 248.0 MB in the end (delta: 108.5 MB). Free memory was 99.1 MB in the beginning and 159.8 MB in the end (delta: -60.8 MB). Peak memory consumption was 47.8 MB. Max. memory is 7.1 GB. [2020-10-16 13:40:21,609 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-16 13:40:21,610 INFO L168 Benchmark]: CACSL2BoogieTranslator took 681.24 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 98.9 MB in the beginning and 158.5 MB in the end (delta: -59.6 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2020-10-16 13:40:21,611 INFO L168 Benchmark]: Boogie Procedure Inliner took 90.39 ms. Allocated memory is still 202.4 MB. Free memory was 158.5 MB in the beginning and 155.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-10-16 13:40:21,611 INFO L168 Benchmark]: Boogie Preprocessor took 30.58 ms. Allocated memory is still 202.4 MB. Free memory was 155.9 MB in the beginning and 154.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-16 13:40:21,615 INFO L168 Benchmark]: RCFGBuilder took 446.82 ms. Allocated memory is still 202.4 MB. Free memory was 154.6 MB in the beginning and 132.9 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. [2020-10-16 13:40:21,617 INFO L168 Benchmark]: TraceAbstraction took 3275.08 ms. Allocated memory was 202.4 MB in the beginning and 248.0 MB in the end (delta: 45.6 MB). Free memory was 132.2 MB in the beginning and 159.8 MB in the end (delta: -27.6 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. [2020-10-16 13:40:21,623 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 681.24 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 98.9 MB in the beginning and 158.5 MB in the end (delta: -59.6 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 90.39 ms. Allocated memory is still 202.4 MB. Free memory was 158.5 MB in the beginning and 155.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 30.58 ms. Allocated memory is still 202.4 MB. Free memory was 155.9 MB in the beginning and 154.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 446.82 ms. Allocated memory is still 202.4 MB. Free memory was 154.6 MB in the beginning and 132.9 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3275.08 ms. Allocated memory was 202.4 MB in the beginning and 248.0 MB in the end (delta: 45.6 MB). Free memory was 132.2 MB in the beginning and 159.8 MB in the end (delta: -27.6 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 586 VarBasedMoverChecksPositive, 18 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 27 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.3s, 75 PlacesBefore, 30 PlacesAfterwards, 67 TransitionsBefore, 20 TransitionsAfterwards, 1178 CoEnabledTransitionPairs, 5 FixpointIterations, 12 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 54 TotalNumberOfCompositions, 1902 MoverChecksTotal - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 66 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.1s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.3s, HoareTripleCheckerStatistics: 147 SDtfs, 87 SDslu, 166 SDs, 0 SdLazy, 78 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 99 GetRequests, 72 SyntacticMatches, 6 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=226occurred 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, 8 MinimizatonAttempts, 4 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 93 NumberOfCodeBlocks, 93 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 85 ConstructedInterpolants, 0 QuantifiedInterpolants, 2229 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...