/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.epf -i ../../../trunk/examples/svcomp/pthread-nondet/nondet-array-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c7e336b [2020-10-05 23:50:01,838 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-05 23:50:01,841 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-05 23:50:01,885 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-05 23:50:01,885 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-05 23:50:01,896 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-05 23:50:01,897 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-05 23:50:01,900 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-05 23:50:01,902 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-05 23:50:01,904 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-05 23:50:01,907 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-05 23:50:01,908 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-05 23:50:01,908 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-05 23:50:01,909 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-05 23:50:01,912 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-05 23:50:01,914 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-05 23:50:01,915 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-05 23:50:01,916 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-05 23:50:01,920 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-05 23:50:01,924 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-05 23:50:01,929 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-05 23:50:01,930 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-05 23:50:01,931 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-05 23:50:01,932 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-05 23:50:01,938 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-05 23:50:01,949 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-05 23:50:01,950 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-05 23:50:01,952 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-05 23:50:01,953 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf [2020-10-05 23:50:02,000 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-05 23:50:02,001 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-05 23:50:02,003 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-05 23:50:02,003 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-05 23:50:02,003 INFO L138 SettingsManager]: * Use SBE=true [2020-10-05 23:50:02,003 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-05 23:50:02,004 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-05 23:50:02,004 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-05 23:50:02,004 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-05 23:50:02,004 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-05 23:50:02,005 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-05 23:50:02,006 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-05 23:50:02,006 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-05 23:50:02,006 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-05 23:50:02,007 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-05 23:50:02,007 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-05 23:50:02,007 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-05 23:50:02,007 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-05 23:50:02,007 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-05 23:50:02,008 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-05 23:50:02,008 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-05 23:50:02,008 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-05 23:50:02,008 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-05 23:50:02,008 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-05 23:50:02,009 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-05 23:50:02,009 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-05 23:50:02,009 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-05 23:50:02,009 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-05 23:50:02,009 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-05 23:50:02,303 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-05 23:50:02,322 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-05 23:50:02,326 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-05 23:50:02,328 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-05 23:50:02,330 INFO L275 PluginConnector]: CDTParser initialized [2020-10-05 23:50:02,331 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-nondet/nondet-array-2.i [2020-10-05 23:50:02,392 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9836dfbf5/28329a3ce6564178a25537f4a3e89acc/FLAGcab75f2e4 [2020-10-05 23:50:02,969 INFO L306 CDTParser]: Found 1 translation units. [2020-10-05 23:50:02,970 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-nondet/nondet-array-2.i [2020-10-05 23:50:02,997 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9836dfbf5/28329a3ce6564178a25537f4a3e89acc/FLAGcab75f2e4 [2020-10-05 23:50:03,239 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9836dfbf5/28329a3ce6564178a25537f4a3e89acc [2020-10-05 23:50:03,248 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-05 23:50:03,250 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-05 23:50:03,251 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-05 23:50:03,251 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-05 23:50:03,253 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-05 23:50:03,254 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 11:50:03" (1/1) ... [2020-10-05 23:50:03,256 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f144114 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:50:03, skipping insertion in model container [2020-10-05 23:50:03,257 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 11:50:03" (1/1) ... [2020-10-05 23:50:03,264 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-05 23:50:03,318 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-05 23:50:03,754 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-05 23:50:03,771 INFO L203 MainTranslator]: Completed pre-run [2020-10-05 23:50:03,859 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-05 23:50:03,946 INFO L208 MainTranslator]: Completed translation [2020-10-05 23:50:03,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:50:03 WrapperNode [2020-10-05 23:50:03,947 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-05 23:50:03,948 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-05 23:50:03,948 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-05 23:50:03,948 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-05 23:50:03,957 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:50:03" (1/1) ... [2020-10-05 23:50:03,974 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:50:03" (1/1) ... [2020-10-05 23:50:04,000 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-05 23:50:04,000 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-05 23:50:04,001 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-05 23:50:04,001 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-05 23:50:04,009 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:50:03" (1/1) ... [2020-10-05 23:50:04,009 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:50:03" (1/1) ... [2020-10-05 23:50:04,013 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:50:03" (1/1) ... [2020-10-05 23:50:04,013 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:50:03" (1/1) ... [2020-10-05 23:50:04,021 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:50:03" (1/1) ... [2020-10-05 23:50:04,026 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:50:03" (1/1) ... [2020-10-05 23:50:04,028 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:50:03" (1/1) ... [2020-10-05 23:50:04,032 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-05 23:50:04,032 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-05 23:50:04,032 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-05 23:50:04,033 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-05 23:50:04,034 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:50:03" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-05 23:50:04,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-10-05 23:50:04,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-05 23:50:04,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-05 23:50:04,110 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2020-10-05 23:50:04,110 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2020-10-05 23:50:04,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-05 23:50:04,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-05 23:50:04,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-05 23:50:04,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-05 23:50:04,113 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-05 23:50:04,507 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-05 23:50:04,508 INFO L298 CfgBuilder]: Removed 11 assume(true) statements. [2020-10-05 23:50:04,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 11:50:04 BoogieIcfgContainer [2020-10-05 23:50:04,510 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-05 23:50:04,511 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-05 23:50:04,512 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-05 23:50:04,515 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-05 23:50:04,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.10 11:50:03" (1/3) ... [2020-10-05 23:50:04,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34b2382c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 11:50:04, skipping insertion in model container [2020-10-05 23:50:04,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:50:03" (2/3) ... [2020-10-05 23:50:04,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34b2382c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 11:50:04, skipping insertion in model container [2020-10-05 23:50:04,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 11:50:04" (3/3) ... [2020-10-05 23:50:04,519 INFO L109 eAbstractionObserver]: Analyzing ICFG nondet-array-2.i [2020-10-05 23:50:04,528 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-05 23:50:04,528 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-05 23:50:04,535 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-05 23:50:04,536 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-05 23:50:04,559 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:04,560 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:04,560 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:04,561 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:04,561 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:04,561 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:04,562 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:04,570 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:04,570 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:04,571 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:04,571 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:04,571 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:04,603 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-05 23:50:04,626 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-05 23:50:04,627 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-05 23:50:04,627 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-05 23:50:04,627 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-05 23:50:04,627 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-05 23:50:04,627 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-05 23:50:04,628 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-05 23:50:04,628 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-05 23:50:04,644 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 67 places, 71 transitions, 150 flow [2020-10-05 23:50:04,646 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 67 places, 71 transitions, 150 flow [2020-10-05 23:50:04,700 INFO L129 PetriNetUnfolder]: 12/103 cut-off events. [2020-10-05 23:50:04,700 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-10-05 23:50:04,705 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. [2020-10-05 23:50:04,710 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 67 places, 71 transitions, 150 flow [2020-10-05 23:50:04,734 INFO L129 PetriNetUnfolder]: 12/103 cut-off events. [2020-10-05 23:50:04,735 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-10-05 23:50:04,735 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. [2020-10-05 23:50:04,737 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 370 [2020-10-05 23:50:04,738 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-05 23:50:06,022 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2020-10-05 23:50:06,262 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2020-10-05 23:50:06,416 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2020-10-05 23:50:06,501 INFO L206 etLargeBlockEncoding]: Checked pairs total: 264 [2020-10-05 23:50:06,502 INFO L214 etLargeBlockEncoding]: Total number of compositions: 66 [2020-10-05 23:50:06,509 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 15 places, 14 transitions, 36 flow [2020-10-05 23:50:06,517 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 27 states. [2020-10-05 23:50:06,519 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-10-05 23:50:06,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-05 23:50:06,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:50:06,527 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-05 23:50:06,527 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:50:06,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:50:06,534 INFO L82 PathProgramCache]: Analyzing trace with hash 8680406, now seen corresponding path program 1 times [2020-10-05 23:50:06,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:50:06,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002932492] [2020-10-05 23:50:06,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:50:06,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:50:06,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:50:06,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002932492] [2020-10-05 23:50:06,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:50:06,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 23:50:06,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484463311] [2020-10-05 23:50:06,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 23:50:06,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:50:06,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 23:50:06,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:50:06,773 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 3 states. [2020-10-05 23:50:06,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:50:06,812 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2020-10-05 23:50:06,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 23:50:06,814 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-05 23:50:06,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:50:06,825 INFO L225 Difference]: With dead ends: 27 [2020-10-05 23:50:06,826 INFO L226 Difference]: Without dead ends: 23 [2020-10-05 23:50:06,827 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 [2020-10-05 23:50:06,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-05 23:50:06,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-10-05 23:50:06,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-05 23:50:06,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 32 transitions. [2020-10-05 23:50:06,866 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 32 transitions. Word has length 4 [2020-10-05 23:50:06,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:50:06,867 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 32 transitions. [2020-10-05 23:50:06,867 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 23:50:06,867 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 32 transitions. [2020-10-05 23:50:06,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-05 23:50:06,868 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:50:06,868 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2020-10-05 23:50:06,868 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-05 23:50:06,869 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:50:06,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:50:06,869 INFO L82 PathProgramCache]: Analyzing trace with hash -256835414, now seen corresponding path program 1 times [2020-10-05 23:50:06,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:50:06,870 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717391669] [2020-10-05 23:50:06,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:50:06,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-05 23:50:06,904 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-05 23:50:06,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-05 23:50:06,923 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-05 23:50:06,948 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-05 23:50:06,949 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-05 23:50:06,950 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-05 23:50:06,951 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-05 23:50:06,952 WARN L363 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-05 23:50:06,952 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-10-05 23:50:06,959 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:06,960 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:06,960 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:06,960 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:06,960 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:06,960 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:06,961 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:06,961 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:06,961 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:06,961 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:06,961 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:06,962 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:06,962 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:06,962 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:06,963 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:06,963 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:06,963 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:06,963 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:06,964 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:06,967 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:06,968 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:06,968 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:06,968 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:06,968 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:06,972 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-05 23:50:06,972 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-05 23:50:06,972 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-05 23:50:06,973 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-05 23:50:06,973 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-05 23:50:06,973 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-05 23:50:06,973 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-05 23:50:06,973 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-05 23:50:06,973 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-05 23:50:06,975 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 78 transitions, 174 flow [2020-10-05 23:50:06,976 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 75 places, 78 transitions, 174 flow [2020-10-05 23:50:07,010 INFO L129 PetriNetUnfolder]: 23/183 cut-off events. [2020-10-05 23:50:07,010 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2020-10-05 23:50:07,011 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. [2020-10-05 23:50:07,014 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 75 places, 78 transitions, 174 flow [2020-10-05 23:50:07,040 INFO L129 PetriNetUnfolder]: 23/183 cut-off events. [2020-10-05 23:50:07,040 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2020-10-05 23:50:07,041 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. [2020-10-05 23:50:07,044 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 900 [2020-10-05 23:50:07,044 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-05 23:50:08,133 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2020-10-05 23:50:08,433 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2020-10-05 23:50:08,685 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 67 [2020-10-05 23:50:08,760 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1723 [2020-10-05 23:50:08,760 INFO L214 etLargeBlockEncoding]: Total number of compositions: 62 [2020-10-05 23:50:08,761 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 25 places, 23 transitions, 64 flow [2020-10-05 23:50:08,773 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 242 states. [2020-10-05 23:50:08,773 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states. [2020-10-05 23:50:08,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-05 23:50:08,774 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:50:08,774 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-05 23:50:08,775 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:50:08,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:50:08,775 INFO L82 PathProgramCache]: Analyzing trace with hash 13452069, now seen corresponding path program 1 times [2020-10-05 23:50:08,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:50:08,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049211637] [2020-10-05 23:50:08,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:50:08,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:50:08,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:50:08,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049211637] [2020-10-05 23:50:08,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:50:08,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 23:50:08,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876366994] [2020-10-05 23:50:08,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 23:50:08,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:50:08,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 23:50:08,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:50:08,814 INFO L87 Difference]: Start difference. First operand 242 states. Second operand 3 states. [2020-10-05 23:50:08,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:50:08,845 INFO L93 Difference]: Finished difference Result 242 states and 550 transitions. [2020-10-05 23:50:08,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 23:50:08,846 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-05 23:50:08,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:50:08,852 INFO L225 Difference]: With dead ends: 242 [2020-10-05 23:50:08,852 INFO L226 Difference]: Without dead ends: 216 [2020-10-05 23:50:08,853 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 [2020-10-05 23:50:08,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-10-05 23:50:08,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2020-10-05 23:50:08,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-10-05 23:50:08,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 494 transitions. [2020-10-05 23:50:08,889 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 494 transitions. Word has length 4 [2020-10-05 23:50:08,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:50:08,890 INFO L479 AbstractCegarLoop]: Abstraction has 216 states and 494 transitions. [2020-10-05 23:50:08,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 23:50:08,890 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 494 transitions. [2020-10-05 23:50:08,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-05 23:50:08,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:50:08,891 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:50:08,891 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-05 23:50:08,891 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:50:08,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:50:08,892 INFO L82 PathProgramCache]: Analyzing trace with hash 76722491, now seen corresponding path program 1 times [2020-10-05 23:50:08,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:50:08,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254779561] [2020-10-05 23:50:08,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:50:08,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:50:08,951 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-05 23:50:08,952 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254779561] [2020-10-05 23:50:08,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:50:08,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 23:50:08,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435133339] [2020-10-05 23:50:08,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 23:50:08,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:50:08,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 23:50:08,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-05 23:50:08,954 INFO L87 Difference]: Start difference. First operand 216 states and 494 transitions. Second operand 4 states. [2020-10-05 23:50:08,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:50:08,989 INFO L93 Difference]: Finished difference Result 203 states and 426 transitions. [2020-10-05 23:50:08,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-05 23:50:08,989 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-05 23:50:08,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:50:08,992 INFO L225 Difference]: With dead ends: 203 [2020-10-05 23:50:08,992 INFO L226 Difference]: Without dead ends: 203 [2020-10-05 23:50:08,993 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 [2020-10-05 23:50:08,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-10-05 23:50:09,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 197. [2020-10-05 23:50:09,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-10-05 23:50:09,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 420 transitions. [2020-10-05 23:50:09,013 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 420 transitions. Word has length 8 [2020-10-05 23:50:09,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:50:09,013 INFO L479 AbstractCegarLoop]: Abstraction has 197 states and 420 transitions. [2020-10-05 23:50:09,014 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 23:50:09,014 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 420 transitions. [2020-10-05 23:50:09,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 23:50:09,015 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:50:09,015 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2020-10-05 23:50:09,015 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-05 23:50:09,015 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:50:09,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:50:09,016 INFO L82 PathProgramCache]: Analyzing trace with hash 94633273, now seen corresponding path program 1 times [2020-10-05 23:50:09,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:50:09,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972618479] [2020-10-05 23:50:09,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:50:09,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-05 23:50:09,040 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-05 23:50:09,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-05 23:50:09,054 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-05 23:50:09,061 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-05 23:50:09,061 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-05 23:50:09,061 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-05 23:50:09,062 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-05 23:50:09,062 WARN L363 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-05 23:50:09,063 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-10-05 23:50:09,070 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:09,070 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:09,070 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:09,070 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:09,070 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:09,071 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:09,071 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:09,071 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:09,071 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:09,071 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:09,071 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:09,072 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:09,072 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:09,072 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:09,072 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:09,072 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:09,073 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:09,073 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:09,073 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:09,073 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:09,073 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:09,074 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:09,074 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:09,074 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:09,074 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:09,074 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:09,076 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:09,076 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:09,076 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:09,076 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:09,077 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:09,078 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:09,078 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:09,078 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:09,079 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:09,079 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:09,082 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-05 23:50:09,082 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-05 23:50:09,082 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-05 23:50:09,082 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-05 23:50:09,082 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-05 23:50:09,083 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-05 23:50:09,083 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-05 23:50:09,083 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-05 23:50:09,083 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-05 23:50:09,084 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 85 transitions, 200 flow [2020-10-05 23:50:09,084 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 83 places, 85 transitions, 200 flow [2020-10-05 23:50:09,120 INFO L129 PetriNetUnfolder]: 45/330 cut-off events. [2020-10-05 23:50:09,121 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2020-10-05 23:50:09,122 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. [2020-10-05 23:50:09,127 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 83 places, 85 transitions, 200 flow [2020-10-05 23:50:09,160 INFO L129 PetriNetUnfolder]: 45/330 cut-off events. [2020-10-05 23:50:09,161 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2020-10-05 23:50:09,162 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. [2020-10-05 23:50:09,167 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1470 [2020-10-05 23:50:09,167 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-05 23:50:10,336 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-10-05 23:50:10,433 INFO L206 etLargeBlockEncoding]: Checked pairs total: 3028 [2020-10-05 23:50:10,433 INFO L214 etLargeBlockEncoding]: Total number of compositions: 68 [2020-10-05 23:50:10,434 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 28 transitions, 86 flow [2020-10-05 23:50:10,491 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1150 states. [2020-10-05 23:50:10,492 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states. [2020-10-05 23:50:10,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-05 23:50:10,492 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:50:10,492 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-05 23:50:10,493 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:50:10,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:50:10,493 INFO L82 PathProgramCache]: Analyzing trace with hash 18528206, now seen corresponding path program 1 times [2020-10-05 23:50:10,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:50:10,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150124140] [2020-10-05 23:50:10,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:50:10,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:50:10,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:50:10,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150124140] [2020-10-05 23:50:10,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:50:10,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 23:50:10,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461127157] [2020-10-05 23:50:10,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 23:50:10,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:50:10,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 23:50:10,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:50:10,552 INFO L87 Difference]: Start difference. First operand 1150 states. Second operand 3 states. [2020-10-05 23:50:10,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:50:10,592 INFO L93 Difference]: Finished difference Result 1150 states and 3360 transitions. [2020-10-05 23:50:10,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 23:50:10,593 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-05 23:50:10,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:50:10,605 INFO L225 Difference]: With dead ends: 1150 [2020-10-05 23:50:10,606 INFO L226 Difference]: Without dead ends: 1024 [2020-10-05 23:50:10,606 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 [2020-10-05 23:50:10,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2020-10-05 23:50:10,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 1024. [2020-10-05 23:50:10,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1024 states. [2020-10-05 23:50:10,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 3009 transitions. [2020-10-05 23:50:10,728 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 3009 transitions. Word has length 4 [2020-10-05 23:50:10,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:50:10,729 INFO L479 AbstractCegarLoop]: Abstraction has 1024 states and 3009 transitions. [2020-10-05 23:50:10,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 23:50:10,729 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 3009 transitions. [2020-10-05 23:50:10,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-05 23:50:10,730 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:50:10,730 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:50:10,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-05 23:50:10,731 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:50:10,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:50:10,731 INFO L82 PathProgramCache]: Analyzing trace with hash 949696130, now seen corresponding path program 1 times [2020-10-05 23:50:10,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:50:10,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541063826] [2020-10-05 23:50:10,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:50:10,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:50:10,794 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-05 23:50:10,794 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541063826] [2020-10-05 23:50:10,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:50:10,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 23:50:10,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467565871] [2020-10-05 23:50:10,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 23:50:10,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:50:10,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 23:50:10,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-05 23:50:10,798 INFO L87 Difference]: Start difference. First operand 1024 states and 3009 transitions. Second operand 4 states. [2020-10-05 23:50:10,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:50:10,845 INFO L93 Difference]: Finished difference Result 1015 states and 2784 transitions. [2020-10-05 23:50:10,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-05 23:50:10,845 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-05 23:50:10,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:50:10,853 INFO L225 Difference]: With dead ends: 1015 [2020-10-05 23:50:10,853 INFO L226 Difference]: Without dead ends: 1015 [2020-10-05 23:50:10,854 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 [2020-10-05 23:50:10,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2020-10-05 23:50:10,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 977. [2020-10-05 23:50:10,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 977 states. [2020-10-05 23:50:10,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 2718 transitions. [2020-10-05 23:50:10,886 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 2718 transitions. Word has length 8 [2020-10-05 23:50:10,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:50:10,887 INFO L479 AbstractCegarLoop]: Abstraction has 977 states and 2718 transitions. [2020-10-05 23:50:10,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 23:50:10,887 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 2718 transitions. [2020-10-05 23:50:10,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-05 23:50:10,890 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:50:10,890 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2020-10-05 23:50:10,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-05 23:50:10,890 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:50:10,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:50:10,891 INFO L82 PathProgramCache]: Analyzing trace with hash -515475845, now seen corresponding path program 1 times [2020-10-05 23:50:10,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:50:10,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633427463] [2020-10-05 23:50:10,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:50:10,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-05 23:50:10,907 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-05 23:50:10,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-05 23:50:10,919 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-05 23:50:10,926 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-05 23:50:10,926 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-05 23:50:10,926 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-05 23:50:10,927 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-05 23:50:10,927 WARN L363 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-05 23:50:10,927 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-10-05 23:50:10,934 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:10,935 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:10,935 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:10,935 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:10,935 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:10,935 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:10,936 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:10,936 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:10,936 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:10,936 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:10,936 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:10,936 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:10,937 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:10,937 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:10,937 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:10,937 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:10,937 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:10,937 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:10,938 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:10,938 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:10,938 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:10,938 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:10,938 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:10,939 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:10,939 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:10,939 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:10,939 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:10,939 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:10,940 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:10,940 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:10,940 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:10,940 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:10,940 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:10,944 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:10,944 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:10,944 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:10,944 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:10,944 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:10,945 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:10,945 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:10,945 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:10,946 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:10,946 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:10,947 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:10,947 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:10,947 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:10,947 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:10,947 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:10,951 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-05 23:50:10,951 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-05 23:50:10,951 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-05 23:50:10,951 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-05 23:50:10,951 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-05 23:50:10,951 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-05 23:50:10,951 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-05 23:50:10,952 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-05 23:50:10,952 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-05 23:50:10,953 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 92 transitions, 228 flow [2020-10-05 23:50:10,953 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 92 transitions, 228 flow [2020-10-05 23:50:11,013 INFO L129 PetriNetUnfolder]: 91/613 cut-off events. [2020-10-05 23:50:11,013 INFO L130 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2020-10-05 23:50:11,016 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. [2020-10-05 23:50:11,027 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 92 transitions, 228 flow [2020-10-05 23:50:11,091 INFO L129 PetriNetUnfolder]: 91/613 cut-off events. [2020-10-05 23:50:11,091 INFO L130 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2020-10-05 23:50:11,093 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. [2020-10-05 23:50:11,103 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2120 [2020-10-05 23:50:11,104 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-05 23:50:12,359 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-10-05 23:50:12,463 INFO L206 etLargeBlockEncoding]: Checked pairs total: 4448 [2020-10-05 23:50:12,463 INFO L214 etLargeBlockEncoding]: Total number of compositions: 68 [2020-10-05 23:50:12,463 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 37 places, 33 transitions, 110 flow [2020-10-05 23:50:12,799 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 5482 states. [2020-10-05 23:50:12,800 INFO L276 IsEmpty]: Start isEmpty. Operand 5482 states. [2020-10-05 23:50:12,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-05 23:50:12,800 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:50:12,800 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-05 23:50:12,800 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:50:12,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:50:12,801 INFO L82 PathProgramCache]: Analyzing trace with hash 23824947, now seen corresponding path program 1 times [2020-10-05 23:50:12,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:50:12,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260367179] [2020-10-05 23:50:12,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:50:12,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:50:12,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:50:12,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260367179] [2020-10-05 23:50:12,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:50:12,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 23:50:12,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156301272] [2020-10-05 23:50:12,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 23:50:12,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:50:12,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 23:50:12,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:50:12,834 INFO L87 Difference]: Start difference. First operand 5482 states. Second operand 3 states. [2020-10-05 23:50:12,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:50:12,915 INFO L93 Difference]: Finished difference Result 5482 states and 19554 transitions. [2020-10-05 23:50:12,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 23:50:12,916 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-05 23:50:12,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:50:12,963 INFO L225 Difference]: With dead ends: 5482 [2020-10-05 23:50:12,964 INFO L226 Difference]: Without dead ends: 4856 [2020-10-05 23:50:12,964 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 [2020-10-05 23:50:13,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4856 states. [2020-10-05 23:50:13,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4856 to 4856. [2020-10-05 23:50:13,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4856 states. [2020-10-05 23:50:13,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4856 states to 4856 states and 17428 transitions. [2020-10-05 23:50:13,178 INFO L78 Accepts]: Start accepts. Automaton has 4856 states and 17428 transitions. Word has length 4 [2020-10-05 23:50:13,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:50:13,178 INFO L479 AbstractCegarLoop]: Abstraction has 4856 states and 17428 transitions. [2020-10-05 23:50:13,178 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 23:50:13,179 INFO L276 IsEmpty]: Start isEmpty. Operand 4856 states and 17428 transitions. [2020-10-05 23:50:13,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-05 23:50:13,179 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:50:13,179 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:50:13,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-05 23:50:13,180 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:50:13,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:50:13,180 INFO L82 PathProgramCache]: Analyzing trace with hash -1205655351, now seen corresponding path program 1 times [2020-10-05 23:50:13,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:50:13,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23188688] [2020-10-05 23:50:13,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:50:13,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:50:13,213 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-05 23:50:13,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23188688] [2020-10-05 23:50:13,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:50:13,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 23:50:13,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134740451] [2020-10-05 23:50:13,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 23:50:13,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:50:13,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 23:50:13,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-05 23:50:13,216 INFO L87 Difference]: Start difference. First operand 4856 states and 17428 transitions. Second operand 4 states. [2020-10-05 23:50:13,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:50:13,276 INFO L93 Difference]: Finished difference Result 4995 states and 16978 transitions. [2020-10-05 23:50:13,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-05 23:50:13,277 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-05 23:50:13,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:50:13,319 INFO L225 Difference]: With dead ends: 4995 [2020-10-05 23:50:13,319 INFO L226 Difference]: Without dead ends: 4995 [2020-10-05 23:50:13,320 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 [2020-10-05 23:50:13,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4995 states. [2020-10-05 23:50:13,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4995 to 4797. [2020-10-05 23:50:13,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4797 states. [2020-10-05 23:50:13,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4797 states to 4797 states and 16480 transitions. [2020-10-05 23:50:13,674 INFO L78 Accepts]: Start accepts. Automaton has 4797 states and 16480 transitions. Word has length 8 [2020-10-05 23:50:13,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:50:13,675 INFO L479 AbstractCegarLoop]: Abstraction has 4797 states and 16480 transitions. [2020-10-05 23:50:13,675 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 23:50:13,675 INFO L276 IsEmpty]: Start isEmpty. Operand 4797 states and 16480 transitions. [2020-10-05 23:50:13,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-05 23:50:13,677 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:50:13,677 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:50:13,677 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-05 23:50:13,677 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:50:13,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:50:13,678 INFO L82 PathProgramCache]: Analyzing trace with hash 172994846, now seen corresponding path program 1 times [2020-10-05 23:50:13,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:50:13,678 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197643684] [2020-10-05 23:50:13,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:50:13,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:50:13,722 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-05 23:50:13,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197643684] [2020-10-05 23:50:13,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779335466] [2020-10-05 23:50:13,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-10-05 23:50:13,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:50:13,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-05 23:50:13,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:50:13,833 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-05 23:50:13,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:50:13,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-10-05 23:50:13,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109405924] [2020-10-05 23:50:13,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-05 23:50:13,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:50:13,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-05 23:50:13,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-05 23:50:13,836 INFO L87 Difference]: Start difference. First operand 4797 states and 16480 transitions. Second operand 6 states. [2020-10-05 23:50:13,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:50:13,889 INFO L93 Difference]: Finished difference Result 4793 states and 16469 transitions. [2020-10-05 23:50:13,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-05 23:50:13,889 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-05 23:50:13,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:50:13,921 INFO L225 Difference]: With dead ends: 4793 [2020-10-05 23:50:13,922 INFO L226 Difference]: Without dead ends: 4793 [2020-10-05 23:50:13,922 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-05 23:50:13,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4793 states. [2020-10-05 23:50:14,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4793 to 4793. [2020-10-05 23:50:14,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4793 states. [2020-10-05 23:50:14,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4793 states to 4793 states and 16469 transitions. [2020-10-05 23:50:14,091 INFO L78 Accepts]: Start accepts. Automaton has 4793 states and 16469 transitions. Word has length 16 [2020-10-05 23:50:14,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:50:14,091 INFO L479 AbstractCegarLoop]: Abstraction has 4793 states and 16469 transitions. [2020-10-05 23:50:14,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-05 23:50:14,091 INFO L276 IsEmpty]: Start isEmpty. Operand 4793 states and 16469 transitions. [2020-10-05 23:50:14,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-05 23:50:14,094 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:50:14,094 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2020-10-05 23:50:14,307 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-10-05 23:50:14,308 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:50:14,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:50:14,308 INFO L82 PathProgramCache]: Analyzing trace with hash -1534304145, now seen corresponding path program 1 times [2020-10-05 23:50:14,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:50:14,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452673164] [2020-10-05 23:50:14,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:50:14,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-05 23:50:14,323 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-05 23:50:14,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-05 23:50:14,333 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-05 23:50:14,340 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-05 23:50:14,341 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-05 23:50:14,341 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-05 23:50:14,341 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-05 23:50:14,342 WARN L363 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-05 23:50:14,342 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-10-05 23:50:14,350 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:14,351 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:14,351 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:14,351 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:14,351 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:14,351 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:14,351 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:14,352 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:14,352 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:14,352 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:14,352 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:14,352 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:14,353 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:14,353 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:14,353 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:14,353 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:14,353 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:14,354 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:14,354 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:14,354 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:14,354 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:14,354 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:14,354 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:14,355 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:14,355 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:14,355 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:14,355 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:14,355 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:14,356 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:14,356 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:14,356 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:14,356 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:14,356 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:14,356 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:14,357 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:14,357 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:14,357 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:14,357 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:14,358 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:14,358 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:14,359 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:14,359 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:14,359 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:14,360 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:14,360 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:14,361 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:14,361 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:14,361 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:14,361 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:14,362 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:14,363 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:14,363 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:14,363 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:14,363 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:14,363 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:14,364 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:14,365 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:14,365 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:14,365 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:14,365 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:14,369 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-05 23:50:14,370 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-05 23:50:14,370 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-05 23:50:14,370 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-05 23:50:14,370 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-05 23:50:14,370 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-05 23:50:14,370 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-05 23:50:14,370 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-05 23:50:14,370 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-05 23:50:14,372 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 99 transitions, 258 flow [2020-10-05 23:50:14,372 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 99 places, 99 transitions, 258 flow [2020-10-05 23:50:14,515 INFO L129 PetriNetUnfolder]: 189/1172 cut-off events. [2020-10-05 23:50:14,516 INFO L130 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2020-10-05 23:50:14,521 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. [2020-10-05 23:50:14,596 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 99 places, 99 transitions, 258 flow [2020-10-05 23:50:14,727 INFO L129 PetriNetUnfolder]: 189/1172 cut-off events. [2020-10-05 23:50:14,727 INFO L130 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2020-10-05 23:50:14,733 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. [2020-10-05 23:50:14,748 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2850 [2020-10-05 23:50:14,749 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-05 23:50:15,836 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-05 23:50:16,191 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2020-10-05 23:50:16,258 INFO L206 etLargeBlockEncoding]: Checked pairs total: 5971 [2020-10-05 23:50:16,258 INFO L214 etLargeBlockEncoding]: Total number of compositions: 70 [2020-10-05 23:50:16,259 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 43 places, 38 transitions, 136 flow [2020-10-05 23:50:18,468 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 26310 states. [2020-10-05 23:50:18,468 INFO L276 IsEmpty]: Start isEmpty. Operand 26310 states. [2020-10-05 23:50:18,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-05 23:50:18,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:50:18,469 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-05 23:50:18,469 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:50:18,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:50:18,469 INFO L82 PathProgramCache]: Analyzing trace with hash 29336307, now seen corresponding path program 1 times [2020-10-05 23:50:18,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:50:18,470 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928907765] [2020-10-05 23:50:18,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:50:18,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:50:18,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:50:18,485 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928907765] [2020-10-05 23:50:18,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:50:18,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 23:50:18,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798189331] [2020-10-05 23:50:18,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 23:50:18,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:50:18,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 23:50:18,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:50:18,487 INFO L87 Difference]: Start difference. First operand 26310 states. Second operand 3 states. [2020-10-05 23:50:18,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:50:18,707 INFO L93 Difference]: Finished difference Result 26310 states and 110676 transitions. [2020-10-05 23:50:18,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 23:50:18,708 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-05 23:50:18,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:50:19,825 INFO L225 Difference]: With dead ends: 26310 [2020-10-05 23:50:19,826 INFO L226 Difference]: Without dead ends: 23184 [2020-10-05 23:50:19,826 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 [2020-10-05 23:50:20,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23184 states. [2020-10-05 23:50:20,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23184 to 23184. [2020-10-05 23:50:20,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23184 states. [2020-10-05 23:50:21,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23184 states to 23184 states and 98175 transitions. [2020-10-05 23:50:21,079 INFO L78 Accepts]: Start accepts. Automaton has 23184 states and 98175 transitions. Word has length 4 [2020-10-05 23:50:21,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:50:21,080 INFO L479 AbstractCegarLoop]: Abstraction has 23184 states and 98175 transitions. [2020-10-05 23:50:21,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 23:50:21,080 INFO L276 IsEmpty]: Start isEmpty. Operand 23184 states and 98175 transitions. [2020-10-05 23:50:21,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-05 23:50:21,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:50:21,080 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:50:21,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-05 23:50:21,080 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:50:21,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:50:21,081 INFO L82 PathProgramCache]: Analyzing trace with hash 805936127, now seen corresponding path program 1 times [2020-10-05 23:50:21,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:50:21,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452317896] [2020-10-05 23:50:21,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:50:21,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:50:21,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-05 23:50:21,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452317896] [2020-10-05 23:50:21,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:50:21,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 23:50:21,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167061472] [2020-10-05 23:50:21,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 23:50:21,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:50:21,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 23:50:21,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-05 23:50:21,114 INFO L87 Difference]: Start difference. First operand 23184 states and 98175 transitions. Second operand 4 states. [2020-10-05 23:50:21,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:50:21,265 INFO L93 Difference]: Finished difference Result 24543 states and 99524 transitions. [2020-10-05 23:50:21,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-05 23:50:21,266 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-05 23:50:21,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:50:21,361 INFO L225 Difference]: With dead ends: 24543 [2020-10-05 23:50:21,361 INFO L226 Difference]: Without dead ends: 24543 [2020-10-05 23:50:21,361 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 [2020-10-05 23:50:21,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24543 states. [2020-10-05 23:50:23,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24543 to 23577. [2020-10-05 23:50:23,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23577 states. [2020-10-05 23:50:23,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23577 states to 23577 states and 96338 transitions. [2020-10-05 23:50:23,949 INFO L78 Accepts]: Start accepts. Automaton has 23577 states and 96338 transitions. Word has length 8 [2020-10-05 23:50:23,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:50:23,949 INFO L479 AbstractCegarLoop]: Abstraction has 23577 states and 96338 transitions. [2020-10-05 23:50:23,949 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 23:50:23,949 INFO L276 IsEmpty]: Start isEmpty. Operand 23577 states and 96338 transitions. [2020-10-05 23:50:23,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-05 23:50:23,950 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:50:23,951 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:50:23,951 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-05 23:50:23,951 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:50:23,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:50:23,951 INFO L82 PathProgramCache]: Analyzing trace with hash -447719219, now seen corresponding path program 1 times [2020-10-05 23:50:23,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:50:23,952 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878154794] [2020-10-05 23:50:23,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:50:23,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:50:24,017 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-05 23:50:24,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878154794] [2020-10-05 23:50:24,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174800934] [2020-10-05 23:50:24,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-10-05 23:50:24,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:50:24,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-05 23:50:24,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:50:24,112 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-05 23:50:24,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:50:24,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2020-10-05 23:50:24,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058040758] [2020-10-05 23:50:24,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-05 23:50:24,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:50:24,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-05 23:50:24,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-05 23:50:24,115 INFO L87 Difference]: Start difference. First operand 23577 states and 96338 transitions. Second operand 7 states. [2020-10-05 23:50:24,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:50:24,321 INFO L93 Difference]: Finished difference Result 22356 states and 87745 transitions. [2020-10-05 23:50:24,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-05 23:50:24,322 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-10-05 23:50:24,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:50:24,403 INFO L225 Difference]: With dead ends: 22356 [2020-10-05 23:50:24,403 INFO L226 Difference]: Without dead ends: 22356 [2020-10-05 23:50:24,404 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-05 23:50:24,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22356 states. [2020-10-05 23:50:25,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22356 to 21826. [2020-10-05 23:50:25,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21826 states. [2020-10-05 23:50:25,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21826 states to 21826 states and 86349 transitions. [2020-10-05 23:50:25,510 INFO L78 Accepts]: Start accepts. Automaton has 21826 states and 86349 transitions. Word has length 16 [2020-10-05 23:50:25,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:50:25,510 INFO L479 AbstractCegarLoop]: Abstraction has 21826 states and 86349 transitions. [2020-10-05 23:50:25,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-05 23:50:25,511 INFO L276 IsEmpty]: Start isEmpty. Operand 21826 states and 86349 transitions. [2020-10-05 23:50:25,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-05 23:50:25,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:50:25,523 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:50:25,737 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-10-05 23:50:25,738 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:50:25,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:50:25,739 INFO L82 PathProgramCache]: Analyzing trace with hash -1012463302, now seen corresponding path program 1 times [2020-10-05 23:50:25,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:50:25,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57640611] [2020-10-05 23:50:25,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:50:25,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-05 23:50:25,753 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-05 23:50:25,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-05 23:50:25,763 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-05 23:50:25,770 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-05 23:50:25,770 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-05 23:50:25,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-05 23:50:25,771 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-05 23:50:25,771 WARN L363 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-05 23:50:25,772 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2020-10-05 23:50:25,780 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:25,781 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:25,781 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:25,781 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:25,781 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:25,781 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:25,781 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:25,782 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:25,782 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:25,782 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:25,782 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:25,782 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:25,782 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:25,782 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:25,783 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:25,783 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:25,783 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:25,783 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:25,783 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:25,783 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:25,784 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:25,784 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:25,784 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:25,784 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:25,784 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:25,784 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:25,784 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:25,785 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:25,785 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:25,785 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:25,785 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:25,785 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:25,785 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:25,785 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:25,786 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:25,786 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:25,786 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:25,786 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:25,786 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:25,786 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:25,786 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:25,787 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:25,787 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:25,787 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:25,787 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:25,787 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:25,788 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:25,789 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:25,789 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:25,789 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:25,789 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:25,789 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:25,790 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:25,791 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:25,791 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:25,791 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:25,791 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:25,792 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:25,792 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:25,792 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:25,792 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:25,793 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:25,794 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:25,794 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:25,794 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:25,794 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:25,794 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:25,795 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:25,796 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:25,796 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:25,796 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:25,796 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:50:25,801 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-05 23:50:25,801 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-05 23:50:25,801 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-05 23:50:25,801 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-05 23:50:25,801 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-05 23:50:25,801 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-05 23:50:25,802 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-05 23:50:25,802 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-05 23:50:25,802 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-05 23:50:25,803 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 107 places, 106 transitions, 290 flow [2020-10-05 23:50:25,803 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 107 places, 106 transitions, 290 flow [2020-10-05 23:50:26,066 INFO L129 PetriNetUnfolder]: 399/2291 cut-off events. [2020-10-05 23:50:26,066 INFO L130 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2020-10-05 23:50:26,079 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. [2020-10-05 23:50:26,129 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 107 places, 106 transitions, 290 flow [2020-10-05 23:50:26,380 INFO L129 PetriNetUnfolder]: 399/2291 cut-off events. [2020-10-05 23:50:26,381 INFO L130 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2020-10-05 23:50:26,392 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. [2020-10-05 23:50:26,431 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 3660 [2020-10-05 23:50:26,432 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-05 23:50:27,699 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-10-05 23:50:27,946 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-10-05 23:50:28,045 INFO L206 etLargeBlockEncoding]: Checked pairs total: 8653 [2020-10-05 23:50:28,045 INFO L214 etLargeBlockEncoding]: Total number of compositions: 71 [2020-10-05 23:50:28,046 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 49 places, 43 transitions, 164 flow [2020-10-05 23:51:05,681 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 127122 states. [2020-10-05 23:51:05,681 INFO L276 IsEmpty]: Start isEmpty. Operand 127122 states. [2020-10-05 23:51:05,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-05 23:51:05,682 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:51:05,682 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-05 23:51:05,682 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:51:05,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:51:05,682 INFO L82 PathProgramCache]: Analyzing trace with hash 35155697, now seen corresponding path program 1 times [2020-10-05 23:51:05,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:51:05,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406850715] [2020-10-05 23:51:05,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:51:05,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:51:05,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:51:05,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406850715] [2020-10-05 23:51:05,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:51:05,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 23:51:05,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477966770] [2020-10-05 23:51:05,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 23:51:05,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:51:05,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 23:51:05,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:51:05,726 INFO L87 Difference]: Start difference. First operand 127122 states. Second operand 3 states. [2020-10-05 23:51:06,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:51:06,458 INFO L93 Difference]: Finished difference Result 127122 states and 615398 transitions. [2020-10-05 23:51:06,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 23:51:06,458 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-05 23:51:06,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:51:06,886 INFO L225 Difference]: With dead ends: 127122 [2020-10-05 23:51:06,886 INFO L226 Difference]: Without dead ends: 111496 [2020-10-05 23:51:06,887 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 [2020-10-05 23:51:13,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111496 states. [2020-10-05 23:51:16,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111496 to 111496. [2020-10-05 23:51:16,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111496 states. [2020-10-05 23:51:21,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111496 states to 111496 states and 543522 transitions. [2020-10-05 23:51:21,130 INFO L78 Accepts]: Start accepts. Automaton has 111496 states and 543522 transitions. Word has length 4 [2020-10-05 23:51:21,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:51:21,130 INFO L479 AbstractCegarLoop]: Abstraction has 111496 states and 543522 transitions. [2020-10-05 23:51:21,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 23:51:21,130 INFO L276 IsEmpty]: Start isEmpty. Operand 111496 states and 543522 transitions. [2020-10-05 23:51:21,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-05 23:51:21,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:51:21,130 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:51:21,131 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-05 23:51:21,131 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:51:21,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:51:21,131 INFO L82 PathProgramCache]: Analyzing trace with hash -1170285684, now seen corresponding path program 1 times [2020-10-05 23:51:21,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:51:21,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553277588] [2020-10-05 23:51:21,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:51:21,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:51:21,157 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-05 23:51:21,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553277588] [2020-10-05 23:51:21,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:51:21,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 23:51:21,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050521020] [2020-10-05 23:51:21,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 23:51:21,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:51:21,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 23:51:21,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-05 23:51:21,159 INFO L87 Difference]: Start difference. First operand 111496 states and 543522 transitions. Second operand 4 states. [2020-10-05 23:51:21,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:51:21,861 INFO L93 Difference]: Finished difference Result 120747 states and 568406 transitions. [2020-10-05 23:51:21,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-05 23:51:21,862 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-05 23:51:21,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:51:22,314 INFO L225 Difference]: With dead ends: 120747 [2020-10-05 23:51:22,314 INFO L226 Difference]: Without dead ends: 120747 [2020-10-05 23:51:22,315 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 [2020-10-05 23:51:26,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120747 states. [2020-10-05 23:51:34,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120747 to 116197. [2020-10-05 23:51:34,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116197 states. [2020-10-05 23:51:35,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116197 states to 116197 states and 549860 transitions. [2020-10-05 23:51:35,934 INFO L78 Accepts]: Start accepts. Automaton has 116197 states and 549860 transitions. Word has length 8 [2020-10-05 23:51:35,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:51:35,935 INFO L479 AbstractCegarLoop]: Abstraction has 116197 states and 549860 transitions. [2020-10-05 23:51:35,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 23:51:35,935 INFO L276 IsEmpty]: Start isEmpty. Operand 116197 states and 549860 transitions. [2020-10-05 23:51:35,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-05 23:51:35,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:51:35,936 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:51:35,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-05 23:51:35,936 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:51:35,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:51:35,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1082449829, now seen corresponding path program 1 times [2020-10-05 23:51:35,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:51:35,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928764896] [2020-10-05 23:51:35,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:51:35,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:51:35,968 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-05 23:51:35,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928764896] [2020-10-05 23:51:35,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096964508] [2020-10-05 23:51:35,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-10-05 23:51:36,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:51:36,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-05 23:51:36,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:51:36,066 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-05 23:51:36,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:51:36,067 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-10-05 23:51:36,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639900789] [2020-10-05 23:51:36,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-05 23:51:36,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:51:36,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-05 23:51:36,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-05 23:51:36,068 INFO L87 Difference]: Start difference. First operand 116197 states and 549860 transitions. Second operand 6 states. [2020-10-05 23:51:36,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:51:36,814 INFO L93 Difference]: Finished difference Result 116193 states and 549849 transitions. [2020-10-05 23:51:36,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-05 23:51:36,815 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-05 23:51:36,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:51:37,223 INFO L225 Difference]: With dead ends: 116193 [2020-10-05 23:51:37,224 INFO L226 Difference]: Without dead ends: 116193 [2020-10-05 23:51:37,224 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-05 23:51:40,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116193 states. [2020-10-05 23:51:48,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116193 to 116193. [2020-10-05 23:51:48,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116193 states. [2020-10-05 23:51:49,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116193 states to 116193 states and 549849 transitions. [2020-10-05 23:51:49,793 INFO L78 Accepts]: Start accepts. Automaton has 116193 states and 549849 transitions. Word has length 16 [2020-10-05 23:51:49,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:51:49,793 INFO L479 AbstractCegarLoop]: Abstraction has 116193 states and 549849 transitions. [2020-10-05 23:51:49,793 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-05 23:51:49,793 INFO L276 IsEmpty]: Start isEmpty. Operand 116193 states and 549849 transitions. [2020-10-05 23:51:49,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-05 23:51:49,795 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:51:49,795 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:51:49,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:51:49,996 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:51:49,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:51:49,997 INFO L82 PathProgramCache]: Analyzing trace with hash 173719339, now seen corresponding path program 1 times [2020-10-05 23:51:49,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:51:49,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871777147] [2020-10-05 23:51:49,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:51:50,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:51:50,039 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-05 23:51:50,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871777147] [2020-10-05 23:51:50,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602528706] [2020-10-05 23:51:50,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-10-05 23:51:50,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:51:50,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-05 23:51:50,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:51:50,151 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-05 23:51:50,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:51:50,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-10-05 23:51:50,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145080927] [2020-10-05 23:51:50,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-05 23:51:50,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:51:50,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-05 23:51:50,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2020-10-05 23:51:50,153 INFO L87 Difference]: Start difference. First operand 116193 states and 549849 transitions. Second operand 8 states. [2020-10-05 23:51:50,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:51:50,924 INFO L93 Difference]: Finished difference Result 116177 states and 549793 transitions. [2020-10-05 23:51:50,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-05 23:51:50,924 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-10-05 23:51:50,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:51:56,989 INFO L225 Difference]: With dead ends: 116177 [2020-10-05 23:51:56,989 INFO L226 Difference]: Without dead ends: 116177 [2020-10-05 23:51:56,990 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2020-10-05 23:51:59,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116177 states. [2020-10-05 23:52:01,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116177 to 116177. [2020-10-05 23:52:01,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116177 states. [2020-10-05 23:52:02,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116177 states to 116177 states and 549793 transitions. [2020-10-05 23:52:02,102 INFO L78 Accepts]: Start accepts. Automaton has 116177 states and 549793 transitions. Word has length 20 [2020-10-05 23:52:02,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:52:02,103 INFO L479 AbstractCegarLoop]: Abstraction has 116177 states and 549793 transitions. [2020-10-05 23:52:02,103 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-05 23:52:02,103 INFO L276 IsEmpty]: Start isEmpty. Operand 116177 states and 549793 transitions. [2020-10-05 23:52:02,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-05 23:52:02,110 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:52:02,110 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:52:02,325 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:52:02,326 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:52:02,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:52:02,327 INFO L82 PathProgramCache]: Analyzing trace with hash -999416206, now seen corresponding path program 1 times [2020-10-05 23:52:02,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:52:02,327 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391387276] [2020-10-05 23:52:02,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:52:02,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:52:02,377 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-05 23:52:02,377 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391387276] [2020-10-05 23:52:02,377 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088565370] [2020-10-05 23:52:02,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-10-05 23:52:02,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:52:02,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-05 23:52:02,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:52:02,503 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-05 23:52:02,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:52:02,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 23:52:02,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453869912] [2020-10-05 23:52:02,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-05 23:52:02,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:52:02,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-05 23:52:02,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=48, Unknown=0, NotChecked=0, Total=90 [2020-10-05 23:52:02,505 INFO L87 Difference]: Start difference. First operand 116177 states and 549793 transitions. Second operand 10 states. [2020-10-05 23:52:08,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:52:08,143 INFO L93 Difference]: Finished difference Result 116113 states and 549521 transitions. [2020-10-05 23:52:08,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-05 23:52:08,144 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2020-10-05 23:52:08,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:52:08,621 INFO L225 Difference]: With dead ends: 116113 [2020-10-05 23:52:08,622 INFO L226 Difference]: Without dead ends: 116113 [2020-10-05 23:52:08,622 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=48, Unknown=0, NotChecked=0, Total=90 [2020-10-05 23:52:11,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116113 states. [2020-10-05 23:52:13,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116113 to 116113. [2020-10-05 23:52:13,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116113 states. [2020-10-05 23:52:13,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116113 states to 116113 states and 549521 transitions. [2020-10-05 23:52:13,815 INFO L78 Accepts]: Start accepts. Automaton has 116113 states and 549521 transitions. Word has length 24 [2020-10-05 23:52:13,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:52:13,815 INFO L479 AbstractCegarLoop]: Abstraction has 116113 states and 549521 transitions. [2020-10-05 23:52:13,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-05 23:52:13,815 INFO L276 IsEmpty]: Start isEmpty. Operand 116113 states and 549521 transitions. [2020-10-05 23:52:13,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-05 23:52:13,830 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:52:13,830 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:52:14,045 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-10-05 23:52:14,046 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:52:14,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:52:14,046 INFO L82 PathProgramCache]: Analyzing trace with hash 1963695170, now seen corresponding path program 1 times [2020-10-05 23:52:14,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:52:14,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230010872] [2020-10-05 23:52:14,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:52:14,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-05 23:52:14,076 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-05 23:52:14,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-05 23:52:14,088 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-05 23:52:14,108 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-05 23:52:14,108 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-05 23:52:14,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-05 23:52:14,109 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-05 23:52:14,109 WARN L363 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-05 23:52:14,109 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2020-10-05 23:52:14,119 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,120 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,120 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,120 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,120 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,120 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,120 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,121 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,121 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,121 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,121 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,121 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,121 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,121 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,122 WARN L313 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,122 WARN L313 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,122 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,122 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,122 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,122 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,122 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,122 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,123 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,123 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,123 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,123 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,123 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,123 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,123 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,124 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,124 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,124 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,124 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,124 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,124 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,124 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,124 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,125 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,125 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,125 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,125 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,125 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,125 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,125 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,126 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,126 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,126 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,126 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,126 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,126 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,127 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,127 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,127 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,127 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,128 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,128 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,128 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,128 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,129 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,130 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,130 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,130 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,130 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,130 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,131 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,132 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,132 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,132 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,132 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,133 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,133 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,133 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,133 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,134 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,134 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,135 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,135 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,135 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,135 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,136 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,136 WARN L313 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,136 WARN L313 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,137 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,137 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:14,142 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-05 23:52:14,142 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-05 23:52:14,142 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-05 23:52:14,142 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-05 23:52:14,142 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-05 23:52:14,142 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-05 23:52:14,143 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-05 23:52:14,143 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-05 23:52:14,143 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-05 23:52:14,144 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 115 places, 113 transitions, 324 flow [2020-10-05 23:52:14,144 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 115 places, 113 transitions, 324 flow [2020-10-05 23:52:15,607 INFO L129 PetriNetUnfolder]: 849/4546 cut-off events. [2020-10-05 23:52:15,607 INFO L130 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2020-10-05 23:52:15,624 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. [2020-10-05 23:52:15,692 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 115 places, 113 transitions, 324 flow [2020-10-05 23:52:16,047 INFO L129 PetriNetUnfolder]: 849/4546 cut-off events. [2020-10-05 23:52:16,047 INFO L130 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2020-10-05 23:52:16,065 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. [2020-10-05 23:52:16,125 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 4550 [2020-10-05 23:52:16,125 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-05 23:52:17,517 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-10-05 23:52:17,602 INFO L206 etLargeBlockEncoding]: Checked pairs total: 11131 [2020-10-05 23:52:17,602 INFO L214 etLargeBlockEncoding]: Total number of compositions: 75 [2020-10-05 23:52:17,602 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 55 places, 48 transitions, 194 flow Received shutdown request... [2020-10-05 23:53:51,574 WARN L544 AbstractCegarLoop]: Verification canceled [2020-10-05 23:53:51,577 WARN L228 ceAbstractionStarter]: Timeout [2020-10-05 23:53:51,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.10 11:53:51 BasicIcfg [2020-10-05 23:53:52,006 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-05 23:53:52,008 INFO L168 Benchmark]: Toolchain (without parser) took 228758.48 ms. Allocated memory was 140.5 MB in the beginning and 2.8 GB in the end (delta: 2.7 GB). Free memory was 101.9 MB in the beginning and 2.1 GB in the end (delta: -2.0 GB). Peak memory consumption was 3.5 GB. Max. memory is 7.1 GB. [2020-10-05 23:53:52,008 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-10-05 23:53:52,009 INFO L168 Benchmark]: CACSL2BoogieTranslator took 696.38 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 101.7 MB in the beginning and 160.4 MB in the end (delta: -58.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-10-05 23:53:52,009 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.54 ms. Allocated memory is still 203.9 MB. Free memory was 160.4 MB in the beginning and 158.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-05 23:53:52,010 INFO L168 Benchmark]: Boogie Preprocessor took 31.55 ms. Allocated memory is still 203.9 MB. Free memory was 158.4 MB in the beginning and 157.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-05 23:53:52,010 INFO L168 Benchmark]: RCFGBuilder took 477.73 ms. Allocated memory is still 203.9 MB. Free memory was 156.4 MB in the beginning and 134.1 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-10-05 23:53:52,011 INFO L168 Benchmark]: TraceAbstraction took 227494.82 ms. Allocated memory was 203.9 MB in the beginning and 2.8 GB in the end (delta: 2.6 GB). Free memory was 133.4 MB in the beginning and 2.1 GB in the end (delta: -2.0 GB). Peak memory consumption was 3.5 GB. Max. memory is 7.1 GB. [2020-10-05 23:53:52,014 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 696.38 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 101.7 MB in the beginning and 160.4 MB in the end (delta: -58.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 52.54 ms. Allocated memory is still 203.9 MB. Free memory was 160.4 MB in the beginning and 158.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 31.55 ms. Allocated memory is still 203.9 MB. Free memory was 158.4 MB in the beginning and 157.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 477.73 ms. Allocated memory is still 203.9 MB. Free memory was 156.4 MB in the beginning and 134.1 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 227494.82 ms. Allocated memory was 203.9 MB in the beginning and 2.8 GB in the end (delta: 2.6 GB). Free memory was 133.4 MB in the beginning and 2.1 GB in the end (delta: -2.0 GB). Peak memory consumption was 3.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.8s, 67 ProgramPointsBefore, 15 ProgramPointsAfterwards, 71 TransitionsBefore, 14 TransitionsAfterwards, 370 CoEnabledTransitionPairs, 7 FixpointIterations, 24 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 8 ConcurrentYvCompositions, 5 ChoiceCompositions, 181 VarBasedMoverChecksPositive, 3 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 264 CheckedPairsTotal, 66 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 75 ProgramPointsBefore, 25 ProgramPointsAfterwards, 78 TransitionsBefore, 23 TransitionsAfterwards, 900 CoEnabledTransitionPairs, 7 FixpointIterations, 23 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 10 ConcurrentYvCompositions, 5 ChoiceCompositions, 456 VarBasedMoverChecksPositive, 11 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 1723 CheckedPairsTotal, 62 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.3s, 83 ProgramPointsBefore, 31 ProgramPointsAfterwards, 85 TransitionsBefore, 28 TransitionsAfterwards, 1470 CoEnabledTransitionPairs, 7 FixpointIterations, 25 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 10 ConcurrentYvCompositions, 5 ChoiceCompositions, 749 VarBasedMoverChecksPositive, 20 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 3028 CheckedPairsTotal, 68 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.5s, 91 ProgramPointsBefore, 37 ProgramPointsAfterwards, 92 TransitionsBefore, 33 TransitionsAfterwards, 2120 CoEnabledTransitionPairs, 7 FixpointIterations, 25 TrivialSequentialCompositions, 30 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 12 ConcurrentYvCompositions, 5 ChoiceCompositions, 909 VarBasedMoverChecksPositive, 17 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 4448 CheckedPairsTotal, 68 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.8s, 99 ProgramPointsBefore, 43 ProgramPointsAfterwards, 99 TransitionsBefore, 38 TransitionsAfterwards, 2850 CoEnabledTransitionPairs, 6 FixpointIterations, 23 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 10 ConcurrentYvCompositions, 5 ChoiceCompositions, 1450 VarBasedMoverChecksPositive, 35 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 5971 CheckedPairsTotal, 70 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.2s, 107 ProgramPointsBefore, 49 ProgramPointsAfterwards, 106 TransitionsBefore, 43 TransitionsAfterwards, 3660 CoEnabledTransitionPairs, 7 FixpointIterations, 21 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 9 ConcurrentYvCompositions, 5 ChoiceCompositions, 1534 VarBasedMoverChecksPositive, 28 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 8653 CheckedPairsTotal, 71 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 3.4s, 115 ProgramPointsBefore, 55 ProgramPointsAfterwards, 113 TransitionsBefore, 48 TransitionsAfterwards, 4550 CoEnabledTransitionPairs, 7 FixpointIterations, 25 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 8 ConcurrentYvCompositions, 5 ChoiceCompositions, 2156 VarBasedMoverChecksPositive, 42 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 11131 CheckedPairsTotal, 75 TotalNumberOfCompositions - TimeoutResultAtElement [Line: 678]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 678). Cancelled while BasicCegarLoop was constructing initial abstraction,while PetriNet2FiniteAutomaton was constructing automaton for Petri net that has has 55 places, 48 transitions, 194 flow. Already constructed 197531 states. Currently 32370 states in worklist.. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 64 locations, 1 error locations. Started 7 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 226.7s, OverallIterations: 22, TraceHistogramMax: 7, AutomataDifference: 18.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 148.3s, HoareTripleCheckerStatistics: 542 SDtfs, 600 SDslu, 671 SDs, 0 SdLazy, 272 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 132 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=127122occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 56.6s AutomataMinimizationTime, 16 MinimizatonAttempts, 6288 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 349 NumberOfCodeBlocks, 349 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 227 ConstructedInterpolants, 0 QuantifiedInterpolants, 14473 SizeOfPredicates, 5 NumberOfNonLiveVariables, 478 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 21 InterpolantComputations, 11 PerfectInterpolantSequences, 25/73 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown