/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-nondet/nondet-array-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-60655ea [2020-09-16 01:44:10,974 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-16 01:44:10,979 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-16 01:44:11,008 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-16 01:44:11,009 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-16 01:44:11,010 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-16 01:44:11,011 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-16 01:44:11,013 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-16 01:44:11,015 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-16 01:44:11,016 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-16 01:44:11,017 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-16 01:44:11,018 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-16 01:44:11,018 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-16 01:44:11,020 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-16 01:44:11,021 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-16 01:44:11,022 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-16 01:44:11,023 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-16 01:44:11,024 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-16 01:44:11,026 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-16 01:44:11,028 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-16 01:44:11,030 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-16 01:44:11,031 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-16 01:44:11,033 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-16 01:44:11,034 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-16 01:44:11,037 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-16 01:44:11,040 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-16 01:44:11,041 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-16 01:44:11,042 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-16 01:44:11,043 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-16 01:44:11,044 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-16 01:44:11,045 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-16 01:44:11,045 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-16 01:44:11,046 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-16 01:44:11,046 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-16 01:44:11,047 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-16 01:44:11,048 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-16 01:44:11,049 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 [2020-09-16 01:44:11,080 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-16 01:44:11,080 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-16 01:44:11,082 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-16 01:44:11,082 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-16 01:44:11,082 INFO L138 SettingsManager]: * Use SBE=true [2020-09-16 01:44:11,082 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-16 01:44:11,083 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-16 01:44:11,083 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-16 01:44:11,083 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-16 01:44:11,083 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-16 01:44:11,083 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-16 01:44:11,084 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-16 01:44:11,084 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-16 01:44:11,084 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-16 01:44:11,084 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-16 01:44:11,084 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-16 01:44:11,085 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-16 01:44:11,085 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-16 01:44:11,085 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-16 01:44:11,085 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-16 01:44:11,086 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-16 01:44:11,086 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-16 01:44:11,086 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-16 01:44:11,086 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-16 01:44:11,086 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-16 01:44:11,087 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-16 01:44:11,087 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-16 01:44:11,087 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-16 01:44:11,087 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-16 01:44:11,087 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-16 01:44:11,088 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-16 01:44:11,529 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-16 01:44:11,548 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-16 01:44:11,552 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-16 01:44:11,554 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-16 01:44:11,555 INFO L275 PluginConnector]: CDTParser initialized [2020-09-16 01:44:11,556 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-nondet/nondet-array-1.i [2020-09-16 01:44:11,640 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a0676654a/8103a369230e45989147cb2cd2003f80/FLAG970b00b1a [2020-09-16 01:44:12,301 INFO L306 CDTParser]: Found 1 translation units. [2020-09-16 01:44:12,302 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-nondet/nondet-array-1.i [2020-09-16 01:44:12,317 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a0676654a/8103a369230e45989147cb2cd2003f80/FLAG970b00b1a [2020-09-16 01:44:12,568 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a0676654a/8103a369230e45989147cb2cd2003f80 [2020-09-16 01:44:12,588 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-16 01:44:12,596 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-16 01:44:12,598 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-16 01:44:12,599 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-16 01:44:12,603 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-16 01:44:12,605 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 01:44:12" (1/1) ... [2020-09-16 01:44:12,611 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a152199 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:44:12, skipping insertion in model container [2020-09-16 01:44:12,612 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 01:44:12" (1/1) ... [2020-09-16 01:44:12,623 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-16 01:44:12,694 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-16 01:44:13,307 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-16 01:44:13,326 INFO L203 MainTranslator]: Completed pre-run [2020-09-16 01:44:13,407 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-16 01:44:13,483 INFO L208 MainTranslator]: Completed translation [2020-09-16 01:44:13,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:44:13 WrapperNode [2020-09-16 01:44:13,483 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-16 01:44:13,484 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-16 01:44:13,485 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-16 01:44:13,485 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-16 01:44:13,496 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:44:13" (1/1) ... [2020-09-16 01:44:13,517 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:44:13" (1/1) ... [2020-09-16 01:44:13,548 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-16 01:44:13,548 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-16 01:44:13,548 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-16 01:44:13,549 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-16 01:44:13,560 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:44:13" (1/1) ... [2020-09-16 01:44:13,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:44:13" (1/1) ... [2020-09-16 01:44:13,563 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:44:13" (1/1) ... [2020-09-16 01:44:13,564 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:44:13" (1/1) ... [2020-09-16 01:44:13,573 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:44:13" (1/1) ... [2020-09-16 01:44:13,579 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:44:13" (1/1) ... [2020-09-16 01:44:13,582 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:44:13" (1/1) ... [2020-09-16 01:44:13,587 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-16 01:44:13,588 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-16 01:44:13,588 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-16 01:44:13,588 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-16 01:44:13,589 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:44:13" (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 [2020-09-16 01:44:13,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-09-16 01:44:13,685 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-16 01:44:13,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-16 01:44:13,685 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2020-09-16 01:44:13,686 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2020-09-16 01:44:13,686 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-16 01:44:13,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-16 01:44:13,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-16 01:44:13,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-16 01:44:13,691 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-16 01:44:14,113 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-16 01:44:14,113 INFO L295 CfgBuilder]: Removed 11 assume(true) statements. [2020-09-16 01:44:14,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 01:44:14 BoogieIcfgContainer [2020-09-16 01:44:14,118 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-16 01:44:14,119 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-16 01:44:14,119 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-16 01:44:14,123 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-16 01:44:14,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 01:44:12" (1/3) ... [2020-09-16 01:44:14,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ec42a6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 01:44:14, skipping insertion in model container [2020-09-16 01:44:14,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:44:13" (2/3) ... [2020-09-16 01:44:14,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ec42a6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 01:44:14, skipping insertion in model container [2020-09-16 01:44:14,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 01:44:14" (3/3) ... [2020-09-16 01:44:14,128 INFO L109 eAbstractionObserver]: Analyzing ICFG nondet-array-1.i [2020-09-16 01:44:14,140 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-16 01:44:14,141 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-16 01:44:14,151 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-16 01:44:14,152 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-16 01:44:14,181 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:14,181 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:14,182 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:14,182 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:14,182 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:14,183 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:14,183 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:14,191 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:14,191 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:14,192 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:14,192 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:14,192 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:14,226 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-09-16 01:44:14,254 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-16 01:44:14,255 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-16 01:44:14,255 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-16 01:44:14,255 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-16 01:44:14,255 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-16 01:44:14,255 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-16 01:44:14,256 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-16 01:44:14,256 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-16 01:44:14,273 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 67 places, 71 transitions, 150 flow [2020-09-16 01:44:14,275 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 67 places, 71 transitions, 150 flow [2020-09-16 01:44:14,342 INFO L129 PetriNetUnfolder]: 12/103 cut-off events. [2020-09-16 01:44:14,342 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-09-16 01:44:14,349 INFO L80 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 103 events. 12/103 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 206 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 55. Up to 4 conditions per place. [2020-09-16 01:44:14,352 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 67 places, 71 transitions, 150 flow [2020-09-16 01:44:14,380 INFO L129 PetriNetUnfolder]: 12/103 cut-off events. [2020-09-16 01:44:14,381 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-09-16 01:44:14,381 INFO L80 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 103 events. 12/103 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 206 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 55. Up to 4 conditions per place. [2020-09-16 01:44:14,383 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 370 [2020-09-16 01:44:14,385 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-16 01:44:15,794 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2020-09-16 01:44:16,105 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2020-09-16 01:44:16,287 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2020-09-16 01:44:16,385 INFO L206 etLargeBlockEncoding]: Checked pairs total: 264 [2020-09-16 01:44:16,385 INFO L214 etLargeBlockEncoding]: Total number of compositions: 66 [2020-09-16 01:44:16,390 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 15 places, 14 transitions, 36 flow [2020-09-16 01:44:16,402 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 27 states. [2020-09-16 01:44:16,405 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-09-16 01:44:16,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-09-16 01:44:16,414 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 01:44:16,415 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-09-16 01:44:16,415 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 01:44:16,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 01:44:16,423 INFO L82 PathProgramCache]: Analyzing trace with hash 8680406, now seen corresponding path program 1 times [2020-09-16 01:44:16,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 01:44:16,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435003102] [2020-09-16 01:44:16,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 01:44:16,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:44:16,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 01:44:16,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435003102] [2020-09-16 01:44:16,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 01:44:16,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-16 01:44:16,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1187099178] [2020-09-16 01:44:16,662 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 01:44:16,665 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 01:44:16,681 INFO L274 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-09-16 01:44:16,681 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 01:44:16,683 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 01:44:16,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-16 01:44:16,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 01:44:16,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-16 01:44:16,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 01:44:16,706 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 3 states. [2020-09-16 01:44:16,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 01:44:16,759 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2020-09-16 01:44:16,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-16 01:44:16,762 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-09-16 01:44:16,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 01:44:16,778 INFO L225 Difference]: With dead ends: 27 [2020-09-16 01:44:16,779 INFO L226 Difference]: Without dead ends: 23 [2020-09-16 01:44:16,781 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 01:44:16,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-09-16 01:44:16,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-09-16 01:44:16,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-09-16 01:44:16,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 32 transitions. [2020-09-16 01:44:16,828 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 32 transitions. Word has length 4 [2020-09-16 01:44:16,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 01:44:16,829 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 32 transitions. [2020-09-16 01:44:16,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-16 01:44:16,829 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 32 transitions. [2020-09-16 01:44:16,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-09-16 01:44:16,831 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 01:44:16,831 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2020-09-16 01:44:16,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-16 01:44:16,832 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 01:44:16,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 01:44:16,833 INFO L82 PathProgramCache]: Analyzing trace with hash -256835414, now seen corresponding path program 1 times [2020-09-16 01:44:16,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 01:44:16,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202231493] [2020-09-16 01:44:16,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 01:44:16,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-16 01:44:16,918 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-16 01:44:16,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-16 01:44:16,944 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-16 01:44:16,973 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-16 01:44:16,973 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-16 01:44:16,975 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-16 01:44:16,975 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-16 01:44:16,976 WARN L363 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-16 01:44:16,977 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-09-16 01:44:16,983 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:16,984 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:16,984 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:16,984 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:16,984 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:16,985 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:16,985 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:16,985 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:16,985 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:16,986 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:16,986 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:16,986 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:16,986 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:16,986 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:16,987 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:16,987 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:16,987 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:16,988 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:16,988 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:16,990 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:16,990 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:16,991 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:16,991 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:16,991 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:16,997 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-09-16 01:44:16,997 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-16 01:44:16,998 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-16 01:44:16,998 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-16 01:44:16,998 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-16 01:44:16,998 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-16 01:44:16,998 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-16 01:44:16,998 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-16 01:44:16,998 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-16 01:44:17,001 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 78 transitions, 174 flow [2020-09-16 01:44:17,001 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 75 places, 78 transitions, 174 flow [2020-09-16 01:44:17,037 INFO L129 PetriNetUnfolder]: 23/183 cut-off events. [2020-09-16 01:44:17,037 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2020-09-16 01:44:17,038 INFO L80 FinitePrefix]: Finished finitePrefix Result has 197 conditions, 183 events. 23/183 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 456 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 105. Up to 8 conditions per place. [2020-09-16 01:44:17,041 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 75 places, 78 transitions, 174 flow [2020-09-16 01:44:17,069 INFO L129 PetriNetUnfolder]: 23/183 cut-off events. [2020-09-16 01:44:17,070 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2020-09-16 01:44:17,070 INFO L80 FinitePrefix]: Finished finitePrefix Result has 197 conditions, 183 events. 23/183 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 456 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 105. Up to 8 conditions per place. [2020-09-16 01:44:17,073 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 900 [2020-09-16 01:44:17,073 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-16 01:44:18,380 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2020-09-16 01:44:18,714 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2020-09-16 01:44:18,828 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-09-16 01:44:19,011 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 67 [2020-09-16 01:44:19,102 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1723 [2020-09-16 01:44:19,102 INFO L214 etLargeBlockEncoding]: Total number of compositions: 62 [2020-09-16 01:44:19,103 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 25 places, 23 transitions, 64 flow [2020-09-16 01:44:19,115 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 242 states. [2020-09-16 01:44:19,115 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states. [2020-09-16 01:44:19,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-09-16 01:44:19,116 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 01:44:19,116 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-09-16 01:44:19,116 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 01:44:19,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 01:44:19,117 INFO L82 PathProgramCache]: Analyzing trace with hash 13452069, now seen corresponding path program 1 times [2020-09-16 01:44:19,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 01:44:19,118 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440907133] [2020-09-16 01:44:19,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 01:44:19,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:44:19,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 01:44:19,165 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440907133] [2020-09-16 01:44:19,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 01:44:19,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-16 01:44:19,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [198494813] [2020-09-16 01:44:19,166 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 01:44:19,166 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 01:44:19,167 INFO L274 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-09-16 01:44:19,168 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 01:44:19,168 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 01:44:19,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-16 01:44:19,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 01:44:19,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-16 01:44:19,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 01:44:19,169 INFO L87 Difference]: Start difference. First operand 242 states. Second operand 3 states. [2020-09-16 01:44:19,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 01:44:19,204 INFO L93 Difference]: Finished difference Result 242 states and 550 transitions. [2020-09-16 01:44:19,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-16 01:44:19,207 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-09-16 01:44:19,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 01:44:19,213 INFO L225 Difference]: With dead ends: 242 [2020-09-16 01:44:19,214 INFO L226 Difference]: Without dead ends: 216 [2020-09-16 01:44:19,214 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 01:44:19,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-09-16 01:44:19,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2020-09-16 01:44:19,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-09-16 01:44:19,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 494 transitions. [2020-09-16 01:44:19,244 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 494 transitions. Word has length 4 [2020-09-16 01:44:19,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 01:44:19,244 INFO L479 AbstractCegarLoop]: Abstraction has 216 states and 494 transitions. [2020-09-16 01:44:19,244 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-16 01:44:19,244 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 494 transitions. [2020-09-16 01:44:19,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-16 01:44:19,245 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 01:44:19,245 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 01:44:19,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-16 01:44:19,246 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 01:44:19,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 01:44:19,246 INFO L82 PathProgramCache]: Analyzing trace with hash 76722491, now seen corresponding path program 1 times [2020-09-16 01:44:19,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 01:44:19,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917756625] [2020-09-16 01:44:19,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 01:44:19,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:44:19,306 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 01:44:19,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917756625] [2020-09-16 01:44:19,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625412315] [2020-09-16 01:44:19,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-16 01:44:19,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:44:19,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjunts are in the unsatisfiable core [2020-09-16 01:44:19,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-16 01:44:19,416 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 01:44:19,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-16 01:44:19,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-09-16 01:44:19,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1654163578] [2020-09-16 01:44:19,417 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 01:44:19,418 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 01:44:19,420 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-16 01:44:19,420 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 01:44:19,420 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 01:44:19,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-16 01:44:19,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 01:44:19,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-16 01:44:19,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-09-16 01:44:19,422 INFO L87 Difference]: Start difference. First operand 216 states and 494 transitions. Second operand 6 states. [2020-09-16 01:44:19,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 01:44:19,459 INFO L93 Difference]: Finished difference Result 216 states and 490 transitions. [2020-09-16 01:44:19,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-16 01:44:19,459 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-09-16 01:44:19,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 01:44:19,462 INFO L225 Difference]: With dead ends: 216 [2020-09-16 01:44:19,462 INFO L226 Difference]: Without dead ends: 216 [2020-09-16 01:44:19,463 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-09-16 01:44:19,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-09-16 01:44:19,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2020-09-16 01:44:19,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-09-16 01:44:19,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 490 transitions. [2020-09-16 01:44:19,484 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 490 transitions. Word has length 8 [2020-09-16 01:44:19,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 01:44:19,484 INFO L479 AbstractCegarLoop]: Abstraction has 216 states and 490 transitions. [2020-09-16 01:44:19,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-16 01:44:19,484 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 490 transitions. [2020-09-16 01:44:19,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-16 01:44:19,485 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 01:44:19,486 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2020-09-16 01:44:19,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-16 01:44:19,702 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 01:44:19,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 01:44:19,703 INFO L82 PathProgramCache]: Analyzing trace with hash 94633273, now seen corresponding path program 1 times [2020-09-16 01:44:19,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 01:44:19,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449310603] [2020-09-16 01:44:19,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 01:44:19,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-16 01:44:19,747 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-16 01:44:19,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-16 01:44:19,784 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-16 01:44:19,795 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-16 01:44:19,796 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-16 01:44:19,796 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-16 01:44:19,796 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-16 01:44:19,800 WARN L363 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-16 01:44:19,802 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-09-16 01:44:19,810 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:19,810 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:19,811 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:19,811 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:19,811 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:19,812 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:19,812 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:19,813 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:19,813 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:19,813 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:19,813 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:19,813 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:19,813 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:19,814 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:19,814 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:19,814 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:19,814 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:19,814 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:19,815 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:19,815 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:19,815 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:19,815 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:19,815 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:19,816 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:19,816 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:19,816 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:19,818 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:19,818 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:19,818 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:19,818 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:19,818 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:19,821 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:19,821 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:19,821 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:19,822 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:19,822 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:19,831 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-09-16 01:44:19,832 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-16 01:44:19,832 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-16 01:44:19,832 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-16 01:44:19,832 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-16 01:44:19,833 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-16 01:44:19,833 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-16 01:44:19,833 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-16 01:44:19,833 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-16 01:44:19,835 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 85 transitions, 200 flow [2020-09-16 01:44:19,835 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 83 places, 85 transitions, 200 flow [2020-09-16 01:44:19,879 INFO L129 PetriNetUnfolder]: 45/330 cut-off events. [2020-09-16 01:44:19,879 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2020-09-16 01:44:19,880 INFO L80 FinitePrefix]: Finished finitePrefix Result has 358 conditions, 330 events. 45/330 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1086 event pairs, 1 based on Foata normal form. 0/273 useless extension candidates. Maximal degree in co-relation 191. Up to 16 conditions per place. [2020-09-16 01:44:19,885 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 83 places, 85 transitions, 200 flow [2020-09-16 01:44:19,924 INFO L129 PetriNetUnfolder]: 45/330 cut-off events. [2020-09-16 01:44:19,924 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2020-09-16 01:44:19,925 INFO L80 FinitePrefix]: Finished finitePrefix Result has 358 conditions, 330 events. 45/330 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1086 event pairs, 1 based on Foata normal form. 0/273 useless extension candidates. Maximal degree in co-relation 191. Up to 16 conditions per place. [2020-09-16 01:44:19,931 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1470 [2020-09-16 01:44:19,931 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-16 01:44:21,371 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-09-16 01:44:21,499 INFO L206 etLargeBlockEncoding]: Checked pairs total: 3028 [2020-09-16 01:44:21,500 INFO L214 etLargeBlockEncoding]: Total number of compositions: 68 [2020-09-16 01:44:21,500 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 28 transitions, 86 flow [2020-09-16 01:44:21,554 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1150 states. [2020-09-16 01:44:21,554 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states. [2020-09-16 01:44:21,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-09-16 01:44:21,555 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 01:44:21,555 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-09-16 01:44:21,555 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 01:44:21,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 01:44:21,556 INFO L82 PathProgramCache]: Analyzing trace with hash 18528206, now seen corresponding path program 1 times [2020-09-16 01:44:21,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 01:44:21,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612169205] [2020-09-16 01:44:21,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 01:44:21,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:44:21,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 01:44:21,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612169205] [2020-09-16 01:44:21,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 01:44:21,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-16 01:44:21,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2000028901] [2020-09-16 01:44:21,594 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 01:44:21,595 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 01:44:21,596 INFO L274 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-09-16 01:44:21,596 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 01:44:21,596 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 01:44:21,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-16 01:44:21,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 01:44:21,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-16 01:44:21,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 01:44:21,597 INFO L87 Difference]: Start difference. First operand 1150 states. Second operand 3 states. [2020-09-16 01:44:21,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 01:44:21,640 INFO L93 Difference]: Finished difference Result 1150 states and 3360 transitions. [2020-09-16 01:44:21,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-16 01:44:21,640 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-09-16 01:44:21,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 01:44:21,654 INFO L225 Difference]: With dead ends: 1150 [2020-09-16 01:44:21,654 INFO L226 Difference]: Without dead ends: 1024 [2020-09-16 01:44:21,654 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 01:44:21,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2020-09-16 01:44:21,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 1024. [2020-09-16 01:44:21,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1024 states. [2020-09-16 01:44:21,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 3009 transitions. [2020-09-16 01:44:21,730 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 3009 transitions. Word has length 4 [2020-09-16 01:44:21,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 01:44:21,730 INFO L479 AbstractCegarLoop]: Abstraction has 1024 states and 3009 transitions. [2020-09-16 01:44:21,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-16 01:44:21,730 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 3009 transitions. [2020-09-16 01:44:21,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-16 01:44:21,731 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 01:44:21,731 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 01:44:21,731 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-16 01:44:21,732 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 01:44:21,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 01:44:21,732 INFO L82 PathProgramCache]: Analyzing trace with hash 949696130, now seen corresponding path program 1 times [2020-09-16 01:44:21,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 01:44:21,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435639574] [2020-09-16 01:44:21,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 01:44:21,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:44:21,785 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 01:44:21,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435639574] [2020-09-16 01:44:21,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101581214] [2020-09-16 01:44:21,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-16 01:44:21,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:44:21,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjunts are in the unsatisfiable core [2020-09-16 01:44:21,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-16 01:44:21,905 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 01:44:21,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-16 01:44:21,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-09-16 01:44:21,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [242737783] [2020-09-16 01:44:21,906 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 01:44:21,907 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 01:44:21,907 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-16 01:44:21,907 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 01:44:21,908 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 01:44:21,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-16 01:44:21,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 01:44:21,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-16 01:44:21,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-09-16 01:44:21,910 INFO L87 Difference]: Start difference. First operand 1024 states and 3009 transitions. Second operand 6 states. [2020-09-16 01:44:21,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 01:44:21,955 INFO L93 Difference]: Finished difference Result 1024 states and 3005 transitions. [2020-09-16 01:44:21,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-16 01:44:21,956 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-09-16 01:44:21,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 01:44:21,965 INFO L225 Difference]: With dead ends: 1024 [2020-09-16 01:44:21,965 INFO L226 Difference]: Without dead ends: 1024 [2020-09-16 01:44:21,966 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-09-16 01:44:21,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2020-09-16 01:44:21,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 1024. [2020-09-16 01:44:21,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1024 states. [2020-09-16 01:44:22,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 3005 transitions. [2020-09-16 01:44:22,003 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 3005 transitions. Word has length 8 [2020-09-16 01:44:22,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 01:44:22,003 INFO L479 AbstractCegarLoop]: Abstraction has 1024 states and 3005 transitions. [2020-09-16 01:44:22,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-16 01:44:22,003 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 3005 transitions. [2020-09-16 01:44:22,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-16 01:44:22,005 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 01:44:22,005 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-09-16 01:44:22,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-16 01:44:22,217 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 01:44:22,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 01:44:22,217 INFO L82 PathProgramCache]: Analyzing trace with hash -1421208619, now seen corresponding path program 1 times [2020-09-16 01:44:22,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 01:44:22,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361435936] [2020-09-16 01:44:22,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 01:44:22,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:44:22,297 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-16 01:44:22,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361435936] [2020-09-16 01:44:22,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 01:44:22,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 01:44:22,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2055681737] [2020-09-16 01:44:22,299 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 01:44:22,300 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 01:44:22,301 INFO L274 McrAutomatonBuilder]: Finished intersection with 13 states and 12 transitions. [2020-09-16 01:44:22,302 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 01:44:22,302 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 01:44:22,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 01:44:22,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 01:44:22,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 01:44:22,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-16 01:44:22,303 INFO L87 Difference]: Start difference. First operand 1024 states and 3005 transitions. Second operand 4 states. [2020-09-16 01:44:22,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 01:44:22,348 INFO L93 Difference]: Finished difference Result 1005 states and 2767 transitions. [2020-09-16 01:44:22,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-16 01:44:22,349 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-16 01:44:22,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 01:44:22,356 INFO L225 Difference]: With dead ends: 1005 [2020-09-16 01:44:22,357 INFO L226 Difference]: Without dead ends: 1005 [2020-09-16 01:44:22,357 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-16 01:44:22,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1005 states. [2020-09-16 01:44:22,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1005 to 973. [2020-09-16 01:44:22,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 973 states. [2020-09-16 01:44:22,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 2707 transitions. [2020-09-16 01:44:22,390 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 2707 transitions. Word has length 12 [2020-09-16 01:44:22,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 01:44:22,391 INFO L479 AbstractCegarLoop]: Abstraction has 973 states and 2707 transitions. [2020-09-16 01:44:22,392 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 01:44:22,392 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 2707 transitions. [2020-09-16 01:44:22,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-16 01:44:22,394 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 01:44:22,394 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2020-09-16 01:44:22,395 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-16 01:44:22,395 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 01:44:22,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 01:44:22,395 INFO L82 PathProgramCache]: Analyzing trace with hash -515475845, now seen corresponding path program 1 times [2020-09-16 01:44:22,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 01:44:22,396 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768239304] [2020-09-16 01:44:22,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 01:44:22,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-16 01:44:22,414 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-16 01:44:22,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-16 01:44:22,429 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-16 01:44:22,436 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-16 01:44:22,436 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-16 01:44:22,436 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-16 01:44:22,437 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-16 01:44:22,437 WARN L363 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-16 01:44:22,438 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-09-16 01:44:22,446 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:22,446 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:22,446 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:22,446 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:22,447 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:22,447 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:22,447 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:22,447 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:22,447 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:22,448 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:22,448 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:22,448 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:22,448 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:22,448 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:22,449 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:22,449 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:22,449 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:22,449 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:22,449 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:22,450 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:22,450 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:22,450 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:22,450 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:22,450 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:22,451 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:22,451 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:22,451 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:22,451 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:22,452 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:22,452 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:22,452 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:22,452 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:22,452 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:22,454 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:22,454 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:22,455 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:22,455 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:22,455 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:22,457 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:22,457 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:22,457 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:22,457 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:22,457 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:22,459 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:22,459 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:22,460 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:22,460 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:22,460 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:22,468 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-09-16 01:44:22,468 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-16 01:44:22,469 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-16 01:44:22,469 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-16 01:44:22,469 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-16 01:44:22,469 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-16 01:44:22,469 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-16 01:44:22,469 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-16 01:44:22,469 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-16 01:44:22,471 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 92 transitions, 228 flow [2020-09-16 01:44:22,471 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 92 transitions, 228 flow [2020-09-16 01:44:22,552 INFO L129 PetriNetUnfolder]: 91/613 cut-off events. [2020-09-16 01:44:22,553 INFO L130 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2020-09-16 01:44:22,555 INFO L80 FinitePrefix]: Finished finitePrefix Result has 668 conditions, 613 events. 91/613 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2732 event pairs, 6 based on Foata normal form. 0/506 useless extension candidates. Maximal degree in co-relation 350. Up to 32 conditions per place. [2020-09-16 01:44:22,567 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 92 transitions, 228 flow [2020-09-16 01:44:22,651 INFO L129 PetriNetUnfolder]: 91/613 cut-off events. [2020-09-16 01:44:22,651 INFO L130 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2020-09-16 01:44:22,653 INFO L80 FinitePrefix]: Finished finitePrefix Result has 668 conditions, 613 events. 91/613 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2732 event pairs, 6 based on Foata normal form. 0/506 useless extension candidates. Maximal degree in co-relation 350. Up to 32 conditions per place. [2020-09-16 01:44:22,665 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2120 [2020-09-16 01:44:22,666 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-16 01:44:24,123 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-09-16 01:44:24,235 INFO L206 etLargeBlockEncoding]: Checked pairs total: 4448 [2020-09-16 01:44:24,235 INFO L214 etLargeBlockEncoding]: Total number of compositions: 68 [2020-09-16 01:44:24,236 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 37 places, 33 transitions, 110 flow [2020-09-16 01:44:24,583 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 5482 states. [2020-09-16 01:44:24,584 INFO L276 IsEmpty]: Start isEmpty. Operand 5482 states. [2020-09-16 01:44:24,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-09-16 01:44:24,584 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 01:44:24,584 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-09-16 01:44:24,585 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 01:44:24,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 01:44:24,585 INFO L82 PathProgramCache]: Analyzing trace with hash 23824947, now seen corresponding path program 1 times [2020-09-16 01:44:24,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 01:44:24,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959660163] [2020-09-16 01:44:24,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 01:44:24,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:44:24,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 01:44:24,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959660163] [2020-09-16 01:44:24,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 01:44:24,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-16 01:44:24,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2021035941] [2020-09-16 01:44:24,614 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 01:44:24,614 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 01:44:24,615 INFO L274 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-09-16 01:44:24,615 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 01:44:24,615 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 01:44:24,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-16 01:44:24,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 01:44:24,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-16 01:44:24,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 01:44:24,616 INFO L87 Difference]: Start difference. First operand 5482 states. Second operand 3 states. [2020-09-16 01:44:24,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 01:44:24,729 INFO L93 Difference]: Finished difference Result 5482 states and 19554 transitions. [2020-09-16 01:44:24,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-16 01:44:24,729 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-09-16 01:44:24,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 01:44:24,775 INFO L225 Difference]: With dead ends: 5482 [2020-09-16 01:44:24,775 INFO L226 Difference]: Without dead ends: 4856 [2020-09-16 01:44:24,776 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 01:44:24,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4856 states. [2020-09-16 01:44:24,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4856 to 4856. [2020-09-16 01:44:24,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4856 states. [2020-09-16 01:44:24,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4856 states to 4856 states and 17428 transitions. [2020-09-16 01:44:24,990 INFO L78 Accepts]: Start accepts. Automaton has 4856 states and 17428 transitions. Word has length 4 [2020-09-16 01:44:24,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 01:44:24,990 INFO L479 AbstractCegarLoop]: Abstraction has 4856 states and 17428 transitions. [2020-09-16 01:44:24,990 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-16 01:44:24,990 INFO L276 IsEmpty]: Start isEmpty. Operand 4856 states and 17428 transitions. [2020-09-16 01:44:24,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-16 01:44:24,991 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 01:44:24,991 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 01:44:24,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-16 01:44:24,991 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 01:44:24,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 01:44:24,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1205655351, now seen corresponding path program 1 times [2020-09-16 01:44:24,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 01:44:24,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658668782] [2020-09-16 01:44:24,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 01:44:25,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:44:25,030 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 01:44:25,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658668782] [2020-09-16 01:44:25,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365429831] [2020-09-16 01:44:25,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-16 01:44:25,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:44:25,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjunts are in the unsatisfiable core [2020-09-16 01:44:25,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-16 01:44:25,110 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 01:44:25,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-16 01:44:25,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-09-16 01:44:25,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1168983291] [2020-09-16 01:44:25,111 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 01:44:25,112 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 01:44:25,113 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-16 01:44:25,113 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 01:44:25,113 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 01:44:25,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-16 01:44:25,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 01:44:25,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-16 01:44:25,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-09-16 01:44:25,115 INFO L87 Difference]: Start difference. First operand 4856 states and 17428 transitions. Second operand 6 states. [2020-09-16 01:44:25,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 01:44:25,184 INFO L93 Difference]: Finished difference Result 4856 states and 17424 transitions. [2020-09-16 01:44:25,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-16 01:44:25,185 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-09-16 01:44:25,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 01:44:25,234 INFO L225 Difference]: With dead ends: 4856 [2020-09-16 01:44:25,235 INFO L226 Difference]: Without dead ends: 4856 [2020-09-16 01:44:25,236 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-09-16 01:44:25,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4856 states. [2020-09-16 01:44:25,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4856 to 4856. [2020-09-16 01:44:25,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4856 states. [2020-09-16 01:44:25,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4856 states to 4856 states and 17424 transitions. [2020-09-16 01:44:25,513 INFO L78 Accepts]: Start accepts. Automaton has 4856 states and 17424 transitions. Word has length 8 [2020-09-16 01:44:25,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 01:44:25,513 INFO L479 AbstractCegarLoop]: Abstraction has 4856 states and 17424 transitions. [2020-09-16 01:44:25,514 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-16 01:44:25,514 INFO L276 IsEmpty]: Start isEmpty. Operand 4856 states and 17424 transitions. [2020-09-16 01:44:25,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-16 01:44:25,518 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 01:44:25,519 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-09-16 01:44:25,732 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-09-16 01:44:25,732 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 01:44:25,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 01:44:25,733 INFO L82 PathProgramCache]: Analyzing trace with hash -137206530, now seen corresponding path program 1 times [2020-09-16 01:44:25,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 01:44:25,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422728177] [2020-09-16 01:44:25,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 01:44:25,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:44:25,778 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-16 01:44:25,778 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422728177] [2020-09-16 01:44:25,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 01:44:25,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 01:44:25,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [609175416] [2020-09-16 01:44:25,779 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 01:44:25,780 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 01:44:25,781 INFO L274 McrAutomatonBuilder]: Finished intersection with 13 states and 12 transitions. [2020-09-16 01:44:25,781 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 01:44:25,782 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 01:44:25,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 01:44:25,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 01:44:25,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 01:44:25,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-16 01:44:25,783 INFO L87 Difference]: Start difference. First operand 4856 states and 17424 transitions. Second operand 4 states. [2020-09-16 01:44:25,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 01:44:25,841 INFO L93 Difference]: Finished difference Result 4985 states and 16961 transitions. [2020-09-16 01:44:25,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-16 01:44:25,841 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-16 01:44:25,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 01:44:25,880 INFO L225 Difference]: With dead ends: 4985 [2020-09-16 01:44:25,880 INFO L226 Difference]: Without dead ends: 4985 [2020-09-16 01:44:25,881 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-16 01:44:25,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4985 states. [2020-09-16 01:44:26,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4985 to 4793. [2020-09-16 01:44:26,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4793 states. [2020-09-16 01:44:26,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4793 states to 4793 states and 16469 transitions. [2020-09-16 01:44:26,063 INFO L78 Accepts]: Start accepts. Automaton has 4793 states and 16469 transitions. Word has length 12 [2020-09-16 01:44:26,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 01:44:26,064 INFO L479 AbstractCegarLoop]: Abstraction has 4793 states and 16469 transitions. [2020-09-16 01:44:26,064 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 01:44:26,064 INFO L276 IsEmpty]: Start isEmpty. Operand 4793 states and 16469 transitions. [2020-09-16 01:44:26,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-16 01:44:26,067 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 01:44:26,067 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2020-09-16 01:44:26,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-16 01:44:26,067 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 01:44:26,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 01:44:26,068 INFO L82 PathProgramCache]: Analyzing trace with hash -1534304145, now seen corresponding path program 1 times [2020-09-16 01:44:26,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 01:44:26,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85661197] [2020-09-16 01:44:26,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 01:44:26,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-16 01:44:26,086 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-16 01:44:26,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-16 01:44:26,101 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-16 01:44:26,109 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-16 01:44:26,110 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-16 01:44:26,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-16 01:44:26,110 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-16 01:44:26,111 WARN L363 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-16 01:44:26,111 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-09-16 01:44:26,119 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:26,119 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:26,119 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:26,119 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:26,119 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:26,120 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:26,120 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:26,120 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:26,120 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:26,120 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:26,120 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:26,121 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:26,121 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:26,121 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:26,121 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:26,121 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:26,121 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:26,122 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:26,122 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:26,122 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:26,122 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:26,122 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:26,122 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:26,123 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:26,123 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:26,123 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:26,123 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:26,123 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:26,123 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:26,124 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:26,124 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:26,124 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:26,124 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:26,124 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:26,124 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:26,125 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:26,125 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:26,125 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:26,125 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:26,125 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:26,129 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:26,130 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:26,130 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:26,130 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:26,130 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:26,132 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:26,132 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:26,132 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:26,132 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:26,132 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:26,135 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:26,135 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:26,135 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:26,135 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:26,135 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:26,137 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:26,137 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:26,137 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:26,137 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:26,137 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:26,142 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-09-16 01:44:26,143 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-16 01:44:26,143 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-16 01:44:26,143 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-16 01:44:26,143 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-16 01:44:26,143 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-16 01:44:26,144 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-16 01:44:26,144 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-16 01:44:26,144 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-16 01:44:26,145 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 99 transitions, 258 flow [2020-09-16 01:44:26,145 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 99 places, 99 transitions, 258 flow [2020-09-16 01:44:26,297 INFO L129 PetriNetUnfolder]: 189/1172 cut-off events. [2020-09-16 01:44:26,298 INFO L130 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2020-09-16 01:44:26,306 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1283 conditions, 1172 events. 189/1172 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 6706 event pairs, 23 based on Foata normal form. 0/967 useless extension candidates. Maximal degree in co-relation 658. Up to 80 conditions per place. [2020-09-16 01:44:26,337 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 99 places, 99 transitions, 258 flow [2020-09-16 01:44:26,542 INFO L129 PetriNetUnfolder]: 189/1172 cut-off events. [2020-09-16 01:44:26,543 INFO L130 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2020-09-16 01:44:26,550 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1283 conditions, 1172 events. 189/1172 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 6706 event pairs, 23 based on Foata normal form. 0/967 useless extension candidates. Maximal degree in co-relation 658. Up to 80 conditions per place. [2020-09-16 01:44:26,568 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2850 [2020-09-16 01:44:26,568 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-16 01:44:27,834 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-09-16 01:44:28,240 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2020-09-16 01:44:28,328 INFO L206 etLargeBlockEncoding]: Checked pairs total: 5971 [2020-09-16 01:44:28,329 INFO L214 etLargeBlockEncoding]: Total number of compositions: 70 [2020-09-16 01:44:28,329 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 43 places, 38 transitions, 136 flow [2020-09-16 01:44:31,036 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 26310 states. [2020-09-16 01:44:31,036 INFO L276 IsEmpty]: Start isEmpty. Operand 26310 states. [2020-09-16 01:44:31,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-09-16 01:44:31,037 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 01:44:31,037 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-09-16 01:44:31,037 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 01:44:31,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 01:44:31,037 INFO L82 PathProgramCache]: Analyzing trace with hash 29336307, now seen corresponding path program 1 times [2020-09-16 01:44:31,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 01:44:31,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979205316] [2020-09-16 01:44:31,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 01:44:31,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:44:31,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 01:44:31,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979205316] [2020-09-16 01:44:31,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 01:44:31,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-16 01:44:31,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [600022069] [2020-09-16 01:44:31,074 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 01:44:31,074 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 01:44:31,076 INFO L274 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-09-16 01:44:31,076 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 01:44:31,076 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 01:44:31,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-16 01:44:31,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 01:44:31,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-16 01:44:31,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 01:44:31,077 INFO L87 Difference]: Start difference. First operand 26310 states. Second operand 3 states. [2020-09-16 01:44:31,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 01:44:31,284 INFO L93 Difference]: Finished difference Result 26310 states and 110676 transitions. [2020-09-16 01:44:31,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-16 01:44:31,285 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-09-16 01:44:31,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 01:44:31,417 INFO L225 Difference]: With dead ends: 26310 [2020-09-16 01:44:31,418 INFO L226 Difference]: Without dead ends: 23184 [2020-09-16 01:44:31,418 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 01:44:32,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23184 states. [2020-09-16 01:44:32,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23184 to 23184. [2020-09-16 01:44:32,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23184 states. [2020-09-16 01:44:32,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23184 states to 23184 states and 98175 transitions. [2020-09-16 01:44:32,651 INFO L78 Accepts]: Start accepts. Automaton has 23184 states and 98175 transitions. Word has length 4 [2020-09-16 01:44:32,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 01:44:32,652 INFO L479 AbstractCegarLoop]: Abstraction has 23184 states and 98175 transitions. [2020-09-16 01:44:32,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-16 01:44:32,652 INFO L276 IsEmpty]: Start isEmpty. Operand 23184 states and 98175 transitions. [2020-09-16 01:44:32,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-16 01:44:32,652 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 01:44:32,652 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 01:44:32,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-16 01:44:32,653 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 01:44:32,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 01:44:32,653 INFO L82 PathProgramCache]: Analyzing trace with hash 805936127, now seen corresponding path program 1 times [2020-09-16 01:44:32,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 01:44:32,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204703119] [2020-09-16 01:44:32,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 01:44:32,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:44:32,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 01:44:32,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204703119] [2020-09-16 01:44:32,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607427672] [2020-09-16 01:44:32,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-16 01:44:33,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:44:33,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjunts are in the unsatisfiable core [2020-09-16 01:44:33,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-16 01:44:33,816 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 01:44:33,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-16 01:44:33,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-09-16 01:44:33,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [599609355] [2020-09-16 01:44:33,817 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 01:44:33,818 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 01:44:33,818 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-16 01:44:33,819 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 01:44:33,819 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 01:44:33,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-16 01:44:33,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 01:44:33,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-16 01:44:33,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-09-16 01:44:33,820 INFO L87 Difference]: Start difference. First operand 23184 states and 98175 transitions. Second operand 6 states. [2020-09-16 01:44:34,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 01:44:34,005 INFO L93 Difference]: Finished difference Result 23184 states and 98171 transitions. [2020-09-16 01:44:34,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-16 01:44:34,006 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-09-16 01:44:34,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 01:44:34,110 INFO L225 Difference]: With dead ends: 23184 [2020-09-16 01:44:34,111 INFO L226 Difference]: Without dead ends: 23184 [2020-09-16 01:44:34,111 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-09-16 01:44:34,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23184 states. [2020-09-16 01:44:35,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23184 to 23184. [2020-09-16 01:44:35,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23184 states. [2020-09-16 01:44:35,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23184 states to 23184 states and 98171 transitions. [2020-09-16 01:44:35,224 INFO L78 Accepts]: Start accepts. Automaton has 23184 states and 98171 transitions. Word has length 8 [2020-09-16 01:44:35,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 01:44:35,224 INFO L479 AbstractCegarLoop]: Abstraction has 23184 states and 98171 transitions. [2020-09-16 01:44:35,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-16 01:44:35,224 INFO L276 IsEmpty]: Start isEmpty. Operand 23184 states and 98171 transitions. [2020-09-16 01:44:35,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-16 01:44:35,225 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 01:44:35,225 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-09-16 01:44:35,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-16 01:44:35,433 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 01:44:35,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 01:44:35,433 INFO L82 PathProgramCache]: Analyzing trace with hash -921892950, now seen corresponding path program 1 times [2020-09-16 01:44:35,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 01:44:35,434 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478518263] [2020-09-16 01:44:35,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 01:44:35,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:44:35,510 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-16 01:44:35,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478518263] [2020-09-16 01:44:35,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 01:44:35,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 01:44:35,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [192091936] [2020-09-16 01:44:35,512 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 01:44:35,513 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 01:44:35,515 INFO L274 McrAutomatonBuilder]: Finished intersection with 13 states and 12 transitions. [2020-09-16 01:44:35,516 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 01:44:35,516 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 01:44:35,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 01:44:35,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 01:44:35,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 01:44:35,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-16 01:44:35,518 INFO L87 Difference]: Start difference. First operand 23184 states and 98171 transitions. Second operand 4 states. [2020-09-16 01:44:35,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 01:44:35,727 INFO L93 Difference]: Finished difference Result 24533 states and 99507 transitions. [2020-09-16 01:44:35,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-16 01:44:35,728 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-16 01:44:35,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 01:44:35,824 INFO L225 Difference]: With dead ends: 24533 [2020-09-16 01:44:35,825 INFO L226 Difference]: Without dead ends: 24533 [2020-09-16 01:44:35,825 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-16 01:44:36,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24533 states. [2020-09-16 01:44:37,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24533 to 23573. [2020-09-16 01:44:37,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23573 states. [2020-09-16 01:44:37,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23573 states to 23573 states and 96327 transitions. [2020-09-16 01:44:37,189 INFO L78 Accepts]: Start accepts. Automaton has 23573 states and 96327 transitions. Word has length 12 [2020-09-16 01:44:37,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 01:44:37,189 INFO L479 AbstractCegarLoop]: Abstraction has 23573 states and 96327 transitions. [2020-09-16 01:44:37,190 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 01:44:37,190 INFO L276 IsEmpty]: Start isEmpty. Operand 23573 states and 96327 transitions. [2020-09-16 01:44:37,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-16 01:44:37,193 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 01:44:37,194 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 01:44:37,194 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-16 01:44:37,194 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 01:44:37,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 01:44:37,195 INFO L82 PathProgramCache]: Analyzing trace with hash 81754288, now seen corresponding path program 1 times [2020-09-16 01:44:37,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 01:44:37,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768625931] [2020-09-16 01:44:37,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 01:44:37,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:44:37,300 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-16 01:44:37,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768625931] [2020-09-16 01:44:37,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958283994] [2020-09-16 01:44:37,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-16 01:44:37,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:44:37,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjunts are in the unsatisfiable core [2020-09-16 01:44:37,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-16 01:44:37,436 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-16 01:44:37,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-16 01:44:37,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-09-16 01:44:37,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [688536430] [2020-09-16 01:44:37,437 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 01:44:37,440 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 01:44:37,445 INFO L274 McrAutomatonBuilder]: Finished intersection with 31 states and 40 transitions. [2020-09-16 01:44:37,446 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 01:44:37,523 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 01:44:37,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-16 01:44:37,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 01:44:37,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-16 01:44:37,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2020-09-16 01:44:37,525 INFO L87 Difference]: Start difference. First operand 23573 states and 96327 transitions. Second operand 8 states. [2020-09-16 01:44:37,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 01:44:37,731 INFO L93 Difference]: Finished difference Result 23557 states and 96271 transitions. [2020-09-16 01:44:37,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-16 01:44:37,731 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-09-16 01:44:37,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 01:44:37,811 INFO L225 Difference]: With dead ends: 23557 [2020-09-16 01:44:37,812 INFO L226 Difference]: Without dead ends: 23557 [2020-09-16 01:44:37,812 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 6 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2020-09-16 01:44:38,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23557 states. [2020-09-16 01:44:38,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23557 to 23557. [2020-09-16 01:44:38,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23557 states. [2020-09-16 01:44:38,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23557 states to 23557 states and 96271 transitions. [2020-09-16 01:44:38,889 INFO L78 Accepts]: Start accepts. Automaton has 23557 states and 96271 transitions. Word has length 20 [2020-09-16 01:44:38,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 01:44:38,889 INFO L479 AbstractCegarLoop]: Abstraction has 23557 states and 96271 transitions. [2020-09-16 01:44:38,889 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-16 01:44:38,889 INFO L276 IsEmpty]: Start isEmpty. Operand 23557 states and 96271 transitions. [2020-09-16 01:44:38,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-16 01:44:38,896 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 01:44:38,896 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 01:44:39,103 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-09-16 01:44:39,103 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 01:44:39,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 01:44:39,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1012463302, now seen corresponding path program 1 times [2020-09-16 01:44:39,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 01:44:39,106 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661316726] [2020-09-16 01:44:39,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 01:44:39,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-16 01:44:39,122 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-16 01:44:39,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-16 01:44:39,138 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-16 01:44:39,146 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-16 01:44:39,147 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-16 01:44:39,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-16 01:44:39,147 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-16 01:44:39,148 WARN L363 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-16 01:44:39,148 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2020-09-16 01:44:39,160 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:39,160 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:39,160 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:39,160 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:39,161 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:39,161 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:39,161 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:39,161 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:39,161 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:39,161 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:39,162 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:39,162 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:39,162 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:39,162 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:39,162 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:39,162 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:39,162 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:39,163 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:39,163 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:39,163 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:39,163 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:39,163 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:39,163 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:39,164 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:39,164 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:39,164 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:39,164 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:39,164 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:39,164 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:39,164 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:39,165 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:39,165 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:39,165 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:39,165 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:39,165 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:39,165 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:39,166 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:39,166 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:39,166 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:39,166 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:39,166 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:39,166 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:39,167 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:39,167 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:39,167 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:39,167 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:39,167 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:39,169 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:39,169 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:39,169 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:39,169 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:39,169 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:39,170 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:39,171 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:39,171 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:39,171 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:39,171 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:39,172 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:39,172 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:39,172 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:39,173 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:39,173 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:39,174 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:39,174 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:39,174 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:39,174 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:39,174 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:39,176 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:39,176 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:39,176 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:39,176 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:39,176 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:44:39,183 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-09-16 01:44:39,183 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-16 01:44:39,183 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-16 01:44:39,184 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-16 01:44:39,184 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-16 01:44:39,184 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-16 01:44:39,184 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-16 01:44:39,184 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-16 01:44:39,184 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-16 01:44:39,185 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 107 places, 106 transitions, 290 flow [2020-09-16 01:44:39,186 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 107 places, 106 transitions, 290 flow [2020-09-16 01:44:39,424 INFO L129 PetriNetUnfolder]: 399/2291 cut-off events. [2020-09-16 01:44:39,425 INFO L130 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2020-09-16 01:44:39,436 INFO L80 FinitePrefix]: Finished finitePrefix Result has 2523 conditions, 2291 events. 399/2291 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 16164 event pairs, 72 based on Foata normal form. 0/1892 useless extension candidates. Maximal degree in co-relation 1271. Up to 192 conditions per place. [2020-09-16 01:44:39,490 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 107 places, 106 transitions, 290 flow [2020-09-16 01:44:39,808 INFO L129 PetriNetUnfolder]: 399/2291 cut-off events. [2020-09-16 01:44:39,808 INFO L130 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2020-09-16 01:44:39,819 INFO L80 FinitePrefix]: Finished finitePrefix Result has 2523 conditions, 2291 events. 399/2291 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 16164 event pairs, 72 based on Foata normal form. 0/1892 useless extension candidates. Maximal degree in co-relation 1271. Up to 192 conditions per place. [2020-09-16 01:44:39,860 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 3660 [2020-09-16 01:44:39,860 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-16 01:44:41,125 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2020-09-16 01:44:41,587 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-09-16 01:44:41,702 INFO L206 etLargeBlockEncoding]: Checked pairs total: 8653 [2020-09-16 01:44:41,702 INFO L214 etLargeBlockEncoding]: Total number of compositions: 71 [2020-09-16 01:44:41,702 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 49 places, 43 transitions, 164 flow [2020-09-16 01:45:18,877 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 127122 states. [2020-09-16 01:45:18,877 INFO L276 IsEmpty]: Start isEmpty. Operand 127122 states. [2020-09-16 01:45:18,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-09-16 01:45:18,877 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 01:45:18,877 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-09-16 01:45:18,878 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 01:45:18,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 01:45:18,878 INFO L82 PathProgramCache]: Analyzing trace with hash 35155697, now seen corresponding path program 1 times [2020-09-16 01:45:18,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 01:45:18,878 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349817931] [2020-09-16 01:45:18,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 01:45:18,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:45:18,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 01:45:18,912 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349817931] [2020-09-16 01:45:18,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 01:45:18,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-16 01:45:18,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1736954840] [2020-09-16 01:45:18,913 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 01:45:18,913 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 01:45:18,914 INFO L274 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-09-16 01:45:18,914 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 01:45:18,914 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 01:45:18,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-16 01:45:18,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 01:45:18,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-16 01:45:18,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 01:45:18,915 INFO L87 Difference]: Start difference. First operand 127122 states. Second operand 3 states. [2020-09-16 01:45:22,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 01:45:22,428 INFO L93 Difference]: Finished difference Result 127122 states and 615398 transitions. [2020-09-16 01:45:22,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-16 01:45:22,429 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-09-16 01:45:22,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 01:45:22,882 INFO L225 Difference]: With dead ends: 127122 [2020-09-16 01:45:22,882 INFO L226 Difference]: Without dead ends: 111496 [2020-09-16 01:45:22,883 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 01:45:26,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111496 states. [2020-09-16 01:45:31,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111496 to 111496. [2020-09-16 01:45:31,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111496 states. [2020-09-16 01:45:31,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111496 states to 111496 states and 543522 transitions. [2020-09-16 01:45:31,861 INFO L78 Accepts]: Start accepts. Automaton has 111496 states and 543522 transitions. Word has length 4 [2020-09-16 01:45:31,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 01:45:31,862 INFO L479 AbstractCegarLoop]: Abstraction has 111496 states and 543522 transitions. [2020-09-16 01:45:31,862 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-16 01:45:31,862 INFO L276 IsEmpty]: Start isEmpty. Operand 111496 states and 543522 transitions. [2020-09-16 01:45:31,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-16 01:45:31,862 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 01:45:31,862 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 01:45:31,862 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-16 01:45:31,862 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 01:45:31,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 01:45:31,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1170285684, now seen corresponding path program 1 times [2020-09-16 01:45:31,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 01:45:31,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231074274] [2020-09-16 01:45:31,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 01:45:31,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:45:31,895 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 01:45:31,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231074274] [2020-09-16 01:45:31,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941881032] [2020-09-16 01:45:31,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-16 01:45:31,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:45:31,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjunts are in the unsatisfiable core [2020-09-16 01:45:31,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-16 01:45:32,000 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 01:45:32,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-16 01:45:32,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-09-16 01:45:32,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1291442296] [2020-09-16 01:45:32,001 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 01:45:32,001 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 01:45:32,002 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-16 01:45:32,002 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 01:45:32,002 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 01:45:32,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-16 01:45:32,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 01:45:32,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-16 01:45:32,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-09-16 01:45:32,003 INFO L87 Difference]: Start difference. First operand 111496 states and 543522 transitions. Second operand 6 states. [2020-09-16 01:45:32,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 01:45:32,722 INFO L93 Difference]: Finished difference Result 111496 states and 543518 transitions. [2020-09-16 01:45:32,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-16 01:45:32,723 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-09-16 01:45:32,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 01:45:38,868 INFO L225 Difference]: With dead ends: 111496 [2020-09-16 01:45:38,869 INFO L226 Difference]: Without dead ends: 111496 [2020-09-16 01:45:38,869 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-09-16 01:45:41,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111496 states. [2020-09-16 01:45:43,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111496 to 111496. [2020-09-16 01:45:43,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111496 states. [2020-09-16 01:45:44,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111496 states to 111496 states and 543518 transitions. [2020-09-16 01:45:44,542 INFO L78 Accepts]: Start accepts. Automaton has 111496 states and 543518 transitions. Word has length 8 [2020-09-16 01:45:44,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 01:45:44,543 INFO L479 AbstractCegarLoop]: Abstraction has 111496 states and 543518 transitions. [2020-09-16 01:45:44,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-16 01:45:44,543 INFO L276 IsEmpty]: Start isEmpty. Operand 111496 states and 543518 transitions. [2020-09-16 01:45:44,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-16 01:45:44,543 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 01:45:44,543 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-09-16 01:45:44,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-16 01:45:44,744 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 01:45:44,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 01:45:44,745 INFO L82 PathProgramCache]: Analyzing trace with hash -343123130, now seen corresponding path program 1 times [2020-09-16 01:45:44,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 01:45:44,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058733455] [2020-09-16 01:45:44,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 01:45:44,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:45:44,792 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-16 01:45:44,792 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058733455] [2020-09-16 01:45:44,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 01:45:44,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 01:45:44,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [266804028] [2020-09-16 01:45:44,793 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 01:45:44,794 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 01:45:44,795 INFO L274 McrAutomatonBuilder]: Finished intersection with 13 states and 12 transitions. [2020-09-16 01:45:44,795 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 01:45:44,795 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 01:45:44,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 01:45:44,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 01:45:44,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 01:45:44,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-16 01:45:44,796 INFO L87 Difference]: Start difference. First operand 111496 states and 543518 transitions. Second operand 4 states. [2020-09-16 01:45:45,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 01:45:45,582 INFO L93 Difference]: Finished difference Result 120737 states and 568389 transitions. [2020-09-16 01:45:45,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-16 01:45:45,583 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-16 01:45:45,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 01:45:46,041 INFO L225 Difference]: With dead ends: 120737 [2020-09-16 01:45:46,041 INFO L226 Difference]: Without dead ends: 120737 [2020-09-16 01:45:46,041 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-16 01:45:54,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120737 states. [2020-09-16 01:45:56,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120737 to 116193. [2020-09-16 01:45:56,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116193 states. [2020-09-16 01:45:56,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116193 states to 116193 states and 549849 transitions. [2020-09-16 01:45:56,851 INFO L78 Accepts]: Start accepts. Automaton has 116193 states and 549849 transitions. Word has length 12 [2020-09-16 01:45:56,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 01:45:56,852 INFO L479 AbstractCegarLoop]: Abstraction has 116193 states and 549849 transitions. [2020-09-16 01:45:56,852 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 01:45:56,852 INFO L276 IsEmpty]: Start isEmpty. Operand 116193 states and 549849 transitions. [2020-09-16 01:45:56,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-16 01:45:56,854 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 01:45:56,854 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 01:45:56,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-09-16 01:45:56,854 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 01:45:56,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 01:45:56,855 INFO L82 PathProgramCache]: Analyzing trace with hash 173719339, now seen corresponding path program 1 times [2020-09-16 01:45:56,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 01:45:56,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885820759] [2020-09-16 01:45:56,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 01:45:56,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:45:56,912 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-16 01:45:56,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885820759] [2020-09-16 01:45:56,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61849936] [2020-09-16 01:45:56,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-16 01:45:57,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:45:57,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjunts are in the unsatisfiable core [2020-09-16 01:45:58,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-16 01:45:58,045 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-16 01:45:58,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-16 01:45:58,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-09-16 01:45:58,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [318977089] [2020-09-16 01:45:58,047 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 01:45:58,050 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 01:45:58,054 INFO L274 McrAutomatonBuilder]: Finished intersection with 33 states and 44 transitions. [2020-09-16 01:45:58,054 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 01:45:58,125 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 01:45:58,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-16 01:45:58,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 01:45:58,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-16 01:45:58,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2020-09-16 01:45:58,126 INFO L87 Difference]: Start difference. First operand 116193 states and 549849 transitions. Second operand 8 states. [2020-09-16 01:45:58,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 01:45:58,859 INFO L93 Difference]: Finished difference Result 116177 states and 549793 transitions. [2020-09-16 01:45:58,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-16 01:45:58,860 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-09-16 01:45:58,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 01:45:59,273 INFO L225 Difference]: With dead ends: 116177 [2020-09-16 01:45:59,273 INFO L226 Difference]: Without dead ends: 116177 [2020-09-16 01:45:59,274 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 34 SyntacticMatches, 7 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2020-09-16 01:46:02,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116177 states. [2020-09-16 01:46:10,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116177 to 116177. [2020-09-16 01:46:10,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116177 states. [2020-09-16 01:46:11,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116177 states to 116177 states and 549793 transitions. [2020-09-16 01:46:11,779 INFO L78 Accepts]: Start accepts. Automaton has 116177 states and 549793 transitions. Word has length 20 [2020-09-16 01:46:11,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 01:46:11,780 INFO L479 AbstractCegarLoop]: Abstraction has 116177 states and 549793 transitions. [2020-09-16 01:46:11,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-16 01:46:11,780 INFO L276 IsEmpty]: Start isEmpty. Operand 116177 states and 549793 transitions. [2020-09-16 01:46:11,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-16 01:46:11,786 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 01:46:11,787 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 01:46:12,001 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-16 01:46:12,002 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 01:46:12,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 01:46:12,002 INFO L82 PathProgramCache]: Analyzing trace with hash -999416206, now seen corresponding path program 1 times [2020-09-16 01:46:12,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 01:46:12,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976924000] [2020-09-16 01:46:12,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 01:46:12,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:46:12,114 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-16 01:46:12,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976924000] [2020-09-16 01:46:12,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490201423] [2020-09-16 01:46:12,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-16 01:46:12,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:46:12,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-16 01:46:12,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-16 01:46:12,260 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-16 01:46:12,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-16 01:46:12,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5] total 8 [2020-09-16 01:46:12,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1888002891] [2020-09-16 01:46:12,261 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 01:46:12,263 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 01:46:12,270 INFO L274 McrAutomatonBuilder]: Finished intersection with 41 states and 56 transitions. [2020-09-16 01:46:12,270 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 01:46:12,338 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 01:46:12,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-16 01:46:12,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 01:46:12,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-16 01:46:12,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=38, Unknown=0, NotChecked=0, Total=72 [2020-09-16 01:46:12,340 INFO L87 Difference]: Start difference. First operand 116177 states and 549793 transitions. Second operand 9 states. [2020-09-16 01:46:12,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 01:46:12,978 INFO L93 Difference]: Finished difference Result 94230 states and 434726 transitions. [2020-09-16 01:46:12,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-16 01:46:12,978 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2020-09-16 01:46:12,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 01:46:13,274 INFO L225 Difference]: With dead ends: 94230 [2020-09-16 01:46:13,274 INFO L226 Difference]: Without dead ends: 94230 [2020-09-16 01:46:13,275 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 44 SyntacticMatches, 7 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=38, Unknown=0, NotChecked=0, Total=72 [2020-09-16 01:46:20,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94230 states. [2020-09-16 01:46:21,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94230 to 94012. [2020-09-16 01:46:21,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94012 states. [2020-09-16 01:46:22,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94012 states to 94012 states and 434318 transitions. [2020-09-16 01:46:22,290 INFO L78 Accepts]: Start accepts. Automaton has 94012 states and 434318 transitions. Word has length 24 [2020-09-16 01:46:22,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 01:46:22,290 INFO L479 AbstractCegarLoop]: Abstraction has 94012 states and 434318 transitions. [2020-09-16 01:46:22,290 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-16 01:46:22,290 INFO L276 IsEmpty]: Start isEmpty. Operand 94012 states and 434318 transitions. [2020-09-16 01:46:23,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-16 01:46:23,124 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 01:46:23,124 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 01:46:23,336 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-09-16 01:46:23,337 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 01:46:23,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 01:46:23,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1963695170, now seen corresponding path program 1 times [2020-09-16 01:46:23,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 01:46:23,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793838513] [2020-09-16 01:46:23,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 01:46:23,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-16 01:46:23,354 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-16 01:46:23,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-16 01:46:23,368 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-16 01:46:23,382 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-16 01:46:23,382 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-16 01:46:23,382 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-09-16 01:46:23,382 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-16 01:46:23,384 WARN L363 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-16 01:46:23,384 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2020-09-16 01:46:23,398 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,398 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,398 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,399 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,399 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,399 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,399 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,399 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,399 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,400 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,400 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,400 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,400 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,400 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,400 WARN L313 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,401 WARN L313 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,401 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,401 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,401 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,401 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,401 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,401 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,402 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,402 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,402 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,402 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,402 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,402 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,403 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,403 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,403 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,403 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,403 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,403 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,403 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,404 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,404 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,404 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,404 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,404 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,404 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,405 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,405 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,405 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,405 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,405 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,405 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,405 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,406 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,406 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,406 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,406 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,406 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,407 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,408 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,408 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,408 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,408 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,408 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,409 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,410 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,410 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,410 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,410 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,411 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,411 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,411 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,411 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,411 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,412 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,413 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,413 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,413 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,413 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,415 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,415 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,415 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,415 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,416 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,417 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,417 WARN L313 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,417 WARN L313 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,418 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,418 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:46:23,426 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-09-16 01:46:23,426 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-16 01:46:23,427 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-16 01:46:23,427 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-16 01:46:23,427 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-16 01:46:23,427 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-16 01:46:23,427 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-16 01:46:23,427 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-16 01:46:23,427 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-16 01:46:23,428 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 115 places, 113 transitions, 324 flow [2020-09-16 01:46:23,429 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 115 places, 113 transitions, 324 flow [2020-09-16 01:46:23,923 INFO L129 PetriNetUnfolder]: 849/4546 cut-off events. [2020-09-16 01:46:23,923 INFO L130 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2020-09-16 01:46:23,952 INFO L80 FinitePrefix]: Finished finitePrefix Result has 5044 conditions, 4546 events. 849/4546 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 38350 event pairs, 201 based on Foata normal form. 0/3761 useless extension candidates. Maximal degree in co-relation 2509. Up to 448 conditions per place. [2020-09-16 01:46:24,077 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 115 places, 113 transitions, 324 flow [2020-09-16 01:46:24,591 INFO L129 PetriNetUnfolder]: 849/4546 cut-off events. [2020-09-16 01:46:24,591 INFO L130 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2020-09-16 01:46:24,619 INFO L80 FinitePrefix]: Finished finitePrefix Result has 5044 conditions, 4546 events. 849/4546 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 38350 event pairs, 201 based on Foata normal form. 0/3761 useless extension candidates. Maximal degree in co-relation 2509. Up to 448 conditions per place. [2020-09-16 01:46:24,714 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 4550 [2020-09-16 01:46:24,715 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-16 01:46:26,432 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-09-16 01:46:26,547 INFO L206 etLargeBlockEncoding]: Checked pairs total: 11131 [2020-09-16 01:46:26,547 INFO L214 etLargeBlockEncoding]: Total number of compositions: 75 [2020-09-16 01:46:26,547 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 55 places, 48 transitions, 194 flow