/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-nondet/nondet-array-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-15 19:24:44,426 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 19:24:44,429 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 19:24:44,452 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 19:24:44,453 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 19:24:44,454 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 19:24:44,455 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 19:24:44,457 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 19:24:44,459 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 19:24:44,459 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 19:24:44,460 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 19:24:44,461 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 19:24:44,462 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 19:24:44,462 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 19:24:44,463 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 19:24:44,465 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 19:24:44,465 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 19:24:44,466 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 19:24:44,468 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 19:24:44,470 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 19:24:44,471 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 19:24:44,472 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 19:24:44,473 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 19:24:44,474 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 19:24:44,477 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-15 19:24:44,484 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 19:24:44,485 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 19:24:44,485 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 19:24:44,486 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-15 19:24:44,507 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 19:24:44,508 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 19:24:44,509 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 19:24:44,509 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 19:24:44,509 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 19:24:44,510 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 19:24:44,510 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 19:24:44,510 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 19:24:44,510 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 19:24:44,510 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 19:24:44,511 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 19:24:44,511 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 19:24:44,511 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 19:24:44,511 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 19:24:44,511 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 19:24:44,511 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 19:24:44,512 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 19:24:44,512 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 19:24:44,512 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 19:24:44,512 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 19:24:44,512 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 19:24:44,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 19:24:44,513 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 19:24:44,513 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 19:24:44,513 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 19:24:44,513 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 19:24:44,514 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 19:24:44,514 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 19:24:44,514 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 19:24:44,514 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-15 19:24:44,796 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 19:24:44,807 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 19:24:44,810 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 19:24:44,812 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 19:24:44,812 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 19:24:44,813 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-nondet/nondet-array-2.i [2020-10-15 19:24:44,867 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4e0c3d7a/42a61a6d014a44d599a3f350b4c622e1/FLAG2241fba0a [2020-10-15 19:24:45,369 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 19:24:45,370 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-nondet/nondet-array-2.i [2020-10-15 19:24:45,391 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4e0c3d7a/42a61a6d014a44d599a3f350b4c622e1/FLAG2241fba0a [2020-10-15 19:24:45,683 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4e0c3d7a/42a61a6d014a44d599a3f350b4c622e1 [2020-10-15 19:24:45,691 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 19:24:45,693 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-15 19:24:45,694 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 19:24:45,694 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 19:24:45,697 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 19:24:45,698 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:24:45" (1/1) ... [2020-10-15 19:24:45,702 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dd85e52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:24:45, skipping insertion in model container [2020-10-15 19:24:45,702 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:24:45" (1/1) ... [2020-10-15 19:24:45,711 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 19:24:45,772 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 19:24:46,212 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 19:24:46,225 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 19:24:46,265 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 19:24:46,334 INFO L208 MainTranslator]: Completed translation [2020-10-15 19:24:46,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:24:46 WrapperNode [2020-10-15 19:24:46,335 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 19:24:46,335 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-15 19:24:46,336 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-15 19:24:46,336 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-15 19:24:46,344 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:24:46" (1/1) ... [2020-10-15 19:24:46,360 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:24:46" (1/1) ... [2020-10-15 19:24:46,380 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-15 19:24:46,380 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 19:24:46,380 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 19:24:46,381 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 19:24:46,390 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:24:46" (1/1) ... [2020-10-15 19:24:46,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:24:46" (1/1) ... [2020-10-15 19:24:46,393 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:24:46" (1/1) ... [2020-10-15 19:24:46,393 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:24:46" (1/1) ... [2020-10-15 19:24:46,400 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:24:46" (1/1) ... [2020-10-15 19:24:46,405 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:24:46" (1/1) ... [2020-10-15 19:24:46,407 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:24:46" (1/1) ... [2020-10-15 19:24:46,413 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 19:24:46,413 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 19:24:46,413 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 19:24:46,413 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 19:24:46,417 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:24:46" (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 [2020-10-15 19:24:46,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-10-15 19:24:46,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-15 19:24:46,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 19:24:46,481 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2020-10-15 19:24:46,481 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2020-10-15 19:24:46,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 19:24:46,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 19:24:46,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 19:24:46,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 19:24:46,483 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-15 19:24:46,803 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 19:24:46,803 INFO L298 CfgBuilder]: Removed 11 assume(true) statements. [2020-10-15 19:24:46,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:24:46 BoogieIcfgContainer [2020-10-15 19:24:46,805 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 19:24:46,806 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 19:24:46,807 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 19:24:46,810 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 19:24:46,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 07:24:45" (1/3) ... [2020-10-15 19:24:46,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45c165d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:24:46, skipping insertion in model container [2020-10-15 19:24:46,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:24:46" (2/3) ... [2020-10-15 19:24:46,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45c165d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:24:46, skipping insertion in model container [2020-10-15 19:24:46,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:24:46" (3/3) ... [2020-10-15 19:24:46,813 INFO L111 eAbstractionObserver]: Analyzing ICFG nondet-array-2.i [2020-10-15 19:24:46,827 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-15 19:24:46,828 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-15 19:24:46,847 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 19:24:46,848 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-15 19:24:46,878 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:46,879 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:46,879 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:46,879 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:46,880 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:46,880 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:46,880 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:46,884 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:46,884 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:46,884 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:46,884 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:46,885 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:46,905 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-15 19:24:46,923 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 19:24:46,923 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 19:24:46,923 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 19:24:46,923 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 19:24:46,924 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 19:24:46,924 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 19:24:46,924 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 19:24:46,924 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 19:24:46,934 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 19:24:46,936 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 67 places, 71 transitions, 150 flow [2020-10-15 19:24:46,938 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 67 places, 71 transitions, 150 flow [2020-10-15 19:24:46,940 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 67 places, 71 transitions, 150 flow [2020-10-15 19:24:46,991 INFO L129 PetriNetUnfolder]: 12/103 cut-off events. [2020-10-15 19:24:46,992 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-10-15 19:24:46,996 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. [2020-10-15 19:24:46,998 INFO L117 LiptonReduction]: Number of co-enabled transitions 370 [2020-10-15 19:24:48,451 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2020-10-15 19:24:48,679 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2020-10-15 19:24:48,845 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2020-10-15 19:24:48,933 INFO L132 LiptonReduction]: Checked pairs total: 397 [2020-10-15 19:24:48,933 INFO L134 LiptonReduction]: Total number of compositions: 71 [2020-10-15 19:24:48,940 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 15 places, 14 transitions, 36 flow [2020-10-15 19:24:48,949 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 27 states. [2020-10-15 19:24:48,951 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-10-15 19:24:48,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-15 19:24:48,957 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:24:48,957 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-15 19:24:48,958 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:24:48,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:24:48,962 INFO L82 PathProgramCache]: Analyzing trace with hash 8680406, now seen corresponding path program 1 times [2020-10-15 19:24:48,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:24:48,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82667541] [2020-10-15 19:24:48,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:24:49,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:24:49,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:24:49,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82667541] [2020-10-15 19:24:49,140 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:24:49,140 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 19:24:49,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190273395] [2020-10-15 19:24:49,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 19:24:49,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:24:49,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 19:24:49,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 19:24:49,162 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 3 states. [2020-10-15 19:24:49,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:24:49,195 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2020-10-15 19:24:49,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 19:24:49,197 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-15 19:24:49,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:24:49,206 INFO L225 Difference]: With dead ends: 27 [2020-10-15 19:24:49,207 INFO L226 Difference]: Without dead ends: 23 [2020-10-15 19:24:49,208 INFO L677 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 [2020-10-15 19:24:49,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-15 19:24:49,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-10-15 19:24:49,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-15 19:24:49,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 32 transitions. [2020-10-15 19:24:49,242 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 32 transitions. Word has length 4 [2020-10-15 19:24:49,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:24:49,242 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 32 transitions. [2020-10-15 19:24:49,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 19:24:49,243 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 32 transitions. [2020-10-15 19:24:49,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-15 19:24:49,243 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:24:49,244 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2020-10-15 19:24:49,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 19:24:49,244 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:24:49,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:24:49,245 INFO L82 PathProgramCache]: Analyzing trace with hash -256835414, now seen corresponding path program 1 times [2020-10-15 19:24:49,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:24:49,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232290295] [2020-10-15 19:24:49,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:24:49,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 19:24:49,277 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 19:24:49,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 19:24:49,295 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 19:24:49,316 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-15 19:24:49,316 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-15 19:24:49,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 19:24:49,318 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-15 19:24:49,319 WARN L371 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-15 19:24:49,319 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-10-15 19:24:49,326 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:49,326 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:49,326 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:49,326 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:49,327 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:49,327 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:49,327 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:49,328 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:49,328 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:49,328 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:49,328 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:49,328 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:49,328 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:49,329 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:49,329 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:49,329 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:49,330 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:49,330 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:49,330 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:49,334 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:49,335 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:49,335 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:49,335 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:49,335 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:49,339 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-15 19:24:49,339 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 19:24:49,339 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 19:24:49,340 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 19:24:49,340 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 19:24:49,340 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 19:24:49,340 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 19:24:49,340 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 19:24:49,340 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 19:24:49,342 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 19:24:49,343 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 78 transitions, 174 flow [2020-10-15 19:24:49,343 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 75 places, 78 transitions, 174 flow [2020-10-15 19:24:49,343 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 75 places, 78 transitions, 174 flow [2020-10-15 19:24:49,376 INFO L129 PetriNetUnfolder]: 23/183 cut-off events. [2020-10-15 19:24:49,377 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2020-10-15 19:24:49,378 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. [2020-10-15 19:24:49,381 INFO L117 LiptonReduction]: Number of co-enabled transitions 900 [2020-10-15 19:24:50,483 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2020-10-15 19:24:50,752 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2020-10-15 19:24:50,982 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 67 [2020-10-15 19:24:51,052 INFO L132 LiptonReduction]: Checked pairs total: 2415 [2020-10-15 19:24:51,052 INFO L134 LiptonReduction]: Total number of compositions: 67 [2020-10-15 19:24:51,052 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 25 places, 23 transitions, 64 flow [2020-10-15 19:24:51,065 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 242 states. [2020-10-15 19:24:51,065 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states. [2020-10-15 19:24:51,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-15 19:24:51,066 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:24:51,066 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-15 19:24:51,066 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:24:51,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:24:51,067 INFO L82 PathProgramCache]: Analyzing trace with hash 13452069, now seen corresponding path program 1 times [2020-10-15 19:24:51,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:24:51,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028964676] [2020-10-15 19:24:51,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:24:51,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:24:51,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:24:51,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028964676] [2020-10-15 19:24:51,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:24:51,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 19:24:51,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121977074] [2020-10-15 19:24:51,111 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 19:24:51,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:24:51,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 19:24:51,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 19:24:51,112 INFO L87 Difference]: Start difference. First operand 242 states. Second operand 3 states. [2020-10-15 19:24:51,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:24:51,148 INFO L93 Difference]: Finished difference Result 242 states and 550 transitions. [2020-10-15 19:24:51,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 19:24:51,148 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-15 19:24:51,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:24:51,154 INFO L225 Difference]: With dead ends: 242 [2020-10-15 19:24:51,154 INFO L226 Difference]: Without dead ends: 216 [2020-10-15 19:24:51,155 INFO L677 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 [2020-10-15 19:24:51,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-10-15 19:24:51,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2020-10-15 19:24:51,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-10-15 19:24:51,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 494 transitions. [2020-10-15 19:24:51,184 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 494 transitions. Word has length 4 [2020-10-15 19:24:51,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:24:51,184 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 494 transitions. [2020-10-15 19:24:51,184 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 19:24:51,184 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 494 transitions. [2020-10-15 19:24:51,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-15 19:24:51,185 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:24:51,185 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:24:51,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 19:24:51,186 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:24:51,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:24:51,186 INFO L82 PathProgramCache]: Analyzing trace with hash 76722491, now seen corresponding path program 1 times [2020-10-15 19:24:51,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:24:51,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647791746] [2020-10-15 19:24:51,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:24:51,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:24:51,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-15 19:24:51,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647791746] [2020-10-15 19:24:51,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:24:51,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 19:24:51,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356829099] [2020-10-15 19:24:51,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 19:24:51,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:24:51,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 19:24:51,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-15 19:24:51,267 INFO L87 Difference]: Start difference. First operand 216 states and 494 transitions. Second operand 4 states. [2020-10-15 19:24:51,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:24:51,309 INFO L93 Difference]: Finished difference Result 203 states and 426 transitions. [2020-10-15 19:24:51,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 19:24:51,311 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-15 19:24:51,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:24:51,313 INFO L225 Difference]: With dead ends: 203 [2020-10-15 19:24:51,313 INFO L226 Difference]: Without dead ends: 203 [2020-10-15 19:24:51,314 INFO L677 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 [2020-10-15 19:24:51,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-10-15 19:24:51,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 197. [2020-10-15 19:24:51,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-10-15 19:24:51,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 420 transitions. [2020-10-15 19:24:51,331 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 420 transitions. Word has length 8 [2020-10-15 19:24:51,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:24:51,331 INFO L481 AbstractCegarLoop]: Abstraction has 197 states and 420 transitions. [2020-10-15 19:24:51,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 19:24:51,332 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 420 transitions. [2020-10-15 19:24:51,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-15 19:24:51,333 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:24:51,333 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2020-10-15 19:24:51,333 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 19:24:51,333 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:24:51,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:24:51,334 INFO L82 PathProgramCache]: Analyzing trace with hash 94633273, now seen corresponding path program 1 times [2020-10-15 19:24:51,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:24:51,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076862415] [2020-10-15 19:24:51,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:24:51,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 19:24:51,352 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 19:24:51,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 19:24:51,364 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 19:24:51,370 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-15 19:24:51,370 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-15 19:24:51,371 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 19:24:51,371 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-15 19:24:51,371 WARN L371 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-15 19:24:51,373 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-10-15 19:24:51,378 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:51,378 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:51,379 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:51,379 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:51,379 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:51,379 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:51,379 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:51,380 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:51,380 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:51,380 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:51,380 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:51,380 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:51,380 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:51,381 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:51,381 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:51,381 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:51,381 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:51,381 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:51,382 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:51,382 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:51,382 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:51,382 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:51,383 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:51,383 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:51,383 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:51,383 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:51,384 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:51,385 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:51,385 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:51,385 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:51,385 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:51,386 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:51,386 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:51,387 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:51,387 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:51,387 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:51,389 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-15 19:24:51,390 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 19:24:51,390 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 19:24:51,390 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 19:24:51,390 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 19:24:51,390 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 19:24:51,390 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 19:24:51,391 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 19:24:51,391 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 19:24:51,392 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 19:24:51,392 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 85 transitions, 200 flow [2020-10-15 19:24:51,392 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 85 transitions, 200 flow [2020-10-15 19:24:51,392 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 83 places, 85 transitions, 200 flow [2020-10-15 19:24:51,437 INFO L129 PetriNetUnfolder]: 45/330 cut-off events. [2020-10-15 19:24:51,438 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2020-10-15 19:24:51,438 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. [2020-10-15 19:24:51,444 INFO L117 LiptonReduction]: Number of co-enabled transitions 1470 [2020-10-15 19:24:52,724 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-10-15 19:24:52,823 INFO L132 LiptonReduction]: Checked pairs total: 4432 [2020-10-15 19:24:52,823 INFO L134 LiptonReduction]: Total number of compositions: 73 [2020-10-15 19:24:52,823 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 28 transitions, 86 flow [2020-10-15 19:24:52,873 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1150 states. [2020-10-15 19:24:52,873 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states. [2020-10-15 19:24:52,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-15 19:24:52,874 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:24:52,874 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-15 19:24:52,874 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:24:52,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:24:52,875 INFO L82 PathProgramCache]: Analyzing trace with hash 18528206, now seen corresponding path program 1 times [2020-10-15 19:24:52,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:24:52,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452326188] [2020-10-15 19:24:52,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:24:52,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:24:52,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:24:52,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452326188] [2020-10-15 19:24:52,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:24:52,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 19:24:52,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596081278] [2020-10-15 19:24:52,935 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 19:24:52,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:24:52,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 19:24:52,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 19:24:52,936 INFO L87 Difference]: Start difference. First operand 1150 states. Second operand 3 states. [2020-10-15 19:24:52,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:24:52,976 INFO L93 Difference]: Finished difference Result 1150 states and 3360 transitions. [2020-10-15 19:24:52,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 19:24:52,976 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-15 19:24:52,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:24:52,988 INFO L225 Difference]: With dead ends: 1150 [2020-10-15 19:24:52,988 INFO L226 Difference]: Without dead ends: 1024 [2020-10-15 19:24:52,988 INFO L677 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 [2020-10-15 19:24:52,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2020-10-15 19:24:53,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 1024. [2020-10-15 19:24:53,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1024 states. [2020-10-15 19:24:53,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 3009 transitions. [2020-10-15 19:24:53,074 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 3009 transitions. Word has length 4 [2020-10-15 19:24:53,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:24:53,075 INFO L481 AbstractCegarLoop]: Abstraction has 1024 states and 3009 transitions. [2020-10-15 19:24:53,075 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 19:24:53,075 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 3009 transitions. [2020-10-15 19:24:53,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-15 19:24:53,076 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:24:53,076 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:24:53,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 19:24:53,077 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:24:53,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:24:53,077 INFO L82 PathProgramCache]: Analyzing trace with hash 949696130, now seen corresponding path program 1 times [2020-10-15 19:24:53,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:24:53,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30095096] [2020-10-15 19:24:53,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:24:53,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:24:53,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-15 19:24:53,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30095096] [2020-10-15 19:24:53,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:24:53,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 19:24:53,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723423774] [2020-10-15 19:24:53,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 19:24:53,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:24:53,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 19:24:53,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-15 19:24:53,140 INFO L87 Difference]: Start difference. First operand 1024 states and 3009 transitions. Second operand 4 states. [2020-10-15 19:24:53,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:24:53,180 INFO L93 Difference]: Finished difference Result 1015 states and 2784 transitions. [2020-10-15 19:24:53,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 19:24:53,181 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-15 19:24:53,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:24:53,188 INFO L225 Difference]: With dead ends: 1015 [2020-10-15 19:24:53,188 INFO L226 Difference]: Without dead ends: 1015 [2020-10-15 19:24:53,189 INFO L677 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 [2020-10-15 19:24:53,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2020-10-15 19:24:53,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 977. [2020-10-15 19:24:53,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 977 states. [2020-10-15 19:24:53,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 2718 transitions. [2020-10-15 19:24:53,218 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 2718 transitions. Word has length 8 [2020-10-15 19:24:53,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:24:53,219 INFO L481 AbstractCegarLoop]: Abstraction has 977 states and 2718 transitions. [2020-10-15 19:24:53,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 19:24:53,219 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 2718 transitions. [2020-10-15 19:24:53,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 19:24:53,221 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:24:53,222 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2020-10-15 19:24:53,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 19:24:53,222 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:24:53,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:24:53,222 INFO L82 PathProgramCache]: Analyzing trace with hash -515475845, now seen corresponding path program 1 times [2020-10-15 19:24:53,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:24:53,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256716238] [2020-10-15 19:24:53,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:24:53,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 19:24:53,237 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 19:24:53,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 19:24:53,247 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 19:24:53,253 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-15 19:24:53,253 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-15 19:24:53,254 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 19:24:53,254 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-15 19:24:53,254 WARN L371 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-15 19:24:53,254 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-10-15 19:24:53,264 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,264 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,264 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,265 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,265 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,265 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,265 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,265 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,265 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,266 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,266 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,268 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,268 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,268 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,269 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,269 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,269 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,269 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,269 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,269 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,270 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,270 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,270 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,270 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,270 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,270 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,271 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,271 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,272 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,272 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,272 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,273 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,273 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,276 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,276 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,277 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,277 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,277 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,278 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,278 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,278 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,278 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,279 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,280 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,280 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,280 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,280 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,280 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,285 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-15 19:24:53,285 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 19:24:53,285 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 19:24:53,286 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 19:24:53,286 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 19:24:53,286 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 19:24:53,286 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 19:24:53,286 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 19:24:53,286 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 19:24:53,287 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 19:24:53,288 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 92 transitions, 228 flow [2020-10-15 19:24:53,288 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 91 places, 92 transitions, 228 flow [2020-10-15 19:24:53,288 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 92 transitions, 228 flow [2020-10-15 19:24:53,381 INFO L129 PetriNetUnfolder]: 91/613 cut-off events. [2020-10-15 19:24:53,381 INFO L130 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2020-10-15 19:24:53,383 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. [2020-10-15 19:24:53,393 INFO L117 LiptonReduction]: Number of co-enabled transitions 2120 [2020-10-15 19:24:54,795 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-10-15 19:24:54,905 INFO L132 LiptonReduction]: Checked pairs total: 7163 [2020-10-15 19:24:54,905 INFO L134 LiptonReduction]: Total number of compositions: 73 [2020-10-15 19:24:54,905 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 37 places, 33 transitions, 110 flow [2020-10-15 19:24:55,216 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 5482 states. [2020-10-15 19:24:55,216 INFO L276 IsEmpty]: Start isEmpty. Operand 5482 states. [2020-10-15 19:24:55,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-15 19:24:55,217 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:24:55,217 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-15 19:24:55,217 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:24:55,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:24:55,218 INFO L82 PathProgramCache]: Analyzing trace with hash 23824947, now seen corresponding path program 1 times [2020-10-15 19:24:55,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:24:55,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917311208] [2020-10-15 19:24:55,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:24:55,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:24:55,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:24:55,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917311208] [2020-10-15 19:24:55,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:24:55,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 19:24:55,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737913293] [2020-10-15 19:24:55,241 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 19:24:55,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:24:55,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 19:24:55,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 19:24:55,242 INFO L87 Difference]: Start difference. First operand 5482 states. Second operand 3 states. [2020-10-15 19:24:55,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:24:55,318 INFO L93 Difference]: Finished difference Result 5482 states and 19554 transitions. [2020-10-15 19:24:55,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 19:24:55,318 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-15 19:24:55,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:24:55,358 INFO L225 Difference]: With dead ends: 5482 [2020-10-15 19:24:55,359 INFO L226 Difference]: Without dead ends: 4856 [2020-10-15 19:24:55,360 INFO L677 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 [2020-10-15 19:24:55,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4856 states. [2020-10-15 19:24:55,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4856 to 4856. [2020-10-15 19:24:55,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4856 states. [2020-10-15 19:24:55,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4856 states to 4856 states and 17428 transitions. [2020-10-15 19:24:55,577 INFO L78 Accepts]: Start accepts. Automaton has 4856 states and 17428 transitions. Word has length 4 [2020-10-15 19:24:55,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:24:55,578 INFO L481 AbstractCegarLoop]: Abstraction has 4856 states and 17428 transitions. [2020-10-15 19:24:55,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 19:24:55,578 INFO L276 IsEmpty]: Start isEmpty. Operand 4856 states and 17428 transitions. [2020-10-15 19:24:55,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-15 19:24:55,581 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:24:55,581 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:24:55,581 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 19:24:55,582 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:24:55,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:24:55,582 INFO L82 PathProgramCache]: Analyzing trace with hash -1205655351, now seen corresponding path program 1 times [2020-10-15 19:24:55,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:24:55,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394730125] [2020-10-15 19:24:55,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:24:55,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:24:55,617 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-15 19:24:55,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394730125] [2020-10-15 19:24:55,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:24:55,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 19:24:55,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40761935] [2020-10-15 19:24:55,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 19:24:55,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:24:55,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 19:24:55,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-15 19:24:55,620 INFO L87 Difference]: Start difference. First operand 4856 states and 17428 transitions. Second operand 4 states. [2020-10-15 19:24:55,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:24:55,712 INFO L93 Difference]: Finished difference Result 4995 states and 16978 transitions. [2020-10-15 19:24:55,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 19:24:55,712 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-15 19:24:55,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:24:55,754 INFO L225 Difference]: With dead ends: 4995 [2020-10-15 19:24:55,755 INFO L226 Difference]: Without dead ends: 4995 [2020-10-15 19:24:55,758 INFO L677 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 [2020-10-15 19:24:55,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4995 states. [2020-10-15 19:24:55,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4995 to 4797. [2020-10-15 19:24:55,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4797 states. [2020-10-15 19:24:55,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4797 states to 4797 states and 16480 transitions. [2020-10-15 19:24:55,963 INFO L78 Accepts]: Start accepts. Automaton has 4797 states and 16480 transitions. Word has length 8 [2020-10-15 19:24:55,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:24:55,964 INFO L481 AbstractCegarLoop]: Abstraction has 4797 states and 16480 transitions. [2020-10-15 19:24:55,964 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 19:24:55,964 INFO L276 IsEmpty]: Start isEmpty. Operand 4797 states and 16480 transitions. [2020-10-15 19:24:55,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-15 19:24:55,969 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:24:55,970 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:24:55,970 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 19:24:55,970 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:24:55,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:24:55,970 INFO L82 PathProgramCache]: Analyzing trace with hash 172994846, now seen corresponding path program 1 times [2020-10-15 19:24:55,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:24:55,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308602072] [2020-10-15 19:24:55,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:24:55,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:24:56,031 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 19:24:56,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308602072] [2020-10-15 19:24:56,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282815554] [2020-10-15 19:24:56,032 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 [2020-10-15 19:24:56,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:24:56,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-15 19:24:56,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:24:56,125 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 19:24:56,125 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:24:56,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-10-15 19:24:56,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230907161] [2020-10-15 19:24:56,126 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 19:24:56,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:24:56,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 19:24:56,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-10-15 19:24:56,127 INFO L87 Difference]: Start difference. First operand 4797 states and 16480 transitions. Second operand 6 states. [2020-10-15 19:24:56,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:24:56,269 INFO L93 Difference]: Finished difference Result 4793 states and 16469 transitions. [2020-10-15 19:24:56,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 19:24:56,269 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-15 19:24:56,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:24:56,302 INFO L225 Difference]: With dead ends: 4793 [2020-10-15 19:24:56,302 INFO L226 Difference]: Without dead ends: 4793 [2020-10-15 19:24:56,303 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-10-15 19:24:56,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4793 states. [2020-10-15 19:24:56,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4793 to 4793. [2020-10-15 19:24:56,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4793 states. [2020-10-15 19:24:56,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4793 states to 4793 states and 16469 transitions. [2020-10-15 19:24:56,466 INFO L78 Accepts]: Start accepts. Automaton has 4793 states and 16469 transitions. Word has length 16 [2020-10-15 19:24:56,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:24:56,466 INFO L481 AbstractCegarLoop]: Abstraction has 4793 states and 16469 transitions. [2020-10-15 19:24:56,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 19:24:56,466 INFO L276 IsEmpty]: Start isEmpty. Operand 4793 states and 16469 transitions. [2020-10-15 19:24:56,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-15 19:24:56,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:24:56,469 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2020-10-15 19:24:56,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-10-15 19:24:56,682 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:24:56,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:24:56,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1534304145, now seen corresponding path program 1 times [2020-10-15 19:24:56,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:24:56,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854100037] [2020-10-15 19:24:56,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:24:56,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 19:24:56,695 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 19:24:56,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 19:24:56,704 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 19:24:56,711 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-15 19:24:56,711 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-15 19:24:56,712 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 19:24:56,712 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-15 19:24:56,712 WARN L371 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-15 19:24:56,713 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-10-15 19:24:56,720 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,720 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,720 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,721 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,721 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,721 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,721 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,721 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,721 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,722 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,722 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,722 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,722 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,722 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,722 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,723 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,723 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,723 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,723 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,723 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,723 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,724 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,724 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,724 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,724 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,724 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,724 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,725 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,725 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,725 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,725 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,725 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,725 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,725 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,726 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,726 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,726 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,726 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,726 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,727 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,729 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,729 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,729 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,729 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,729 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,730 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,730 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,731 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,731 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,731 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,732 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,732 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,732 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,732 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,732 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,733 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,734 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,734 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,734 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,734 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,738 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-15 19:24:56,738 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 19:24:56,738 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 19:24:56,738 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 19:24:56,738 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 19:24:56,739 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 19:24:56,739 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 19:24:56,739 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 19:24:56,739 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 19:24:56,740 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 19:24:56,740 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 99 transitions, 258 flow [2020-10-15 19:24:56,740 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 99 places, 99 transitions, 258 flow [2020-10-15 19:24:56,741 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 99 places, 99 transitions, 258 flow [2020-10-15 19:24:56,858 INFO L129 PetriNetUnfolder]: 189/1172 cut-off events. [2020-10-15 19:24:56,858 INFO L130 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2020-10-15 19:24:56,862 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. [2020-10-15 19:24:56,885 INFO L117 LiptonReduction]: Number of co-enabled transitions 2850 [2020-10-15 19:24:58,146 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-15 19:24:58,531 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2020-10-15 19:24:58,611 INFO L132 LiptonReduction]: Checked pairs total: 9531 [2020-10-15 19:24:58,611 INFO L134 LiptonReduction]: Total number of compositions: 75 [2020-10-15 19:24:58,611 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 43 places, 38 transitions, 136 flow [2020-10-15 19:25:00,436 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 26310 states. [2020-10-15 19:25:00,436 INFO L276 IsEmpty]: Start isEmpty. Operand 26310 states. [2020-10-15 19:25:00,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-15 19:25:00,436 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:25:00,437 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-15 19:25:00,437 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:25:00,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:25:00,437 INFO L82 PathProgramCache]: Analyzing trace with hash 29336307, now seen corresponding path program 1 times [2020-10-15 19:25:00,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:25:00,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723522443] [2020-10-15 19:25:00,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:25:00,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:25:00,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:25:00,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723522443] [2020-10-15 19:25:00,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:25:00,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 19:25:00,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158227927] [2020-10-15 19:25:00,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 19:25:00,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:25:00,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 19:25:00,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 19:25:00,454 INFO L87 Difference]: Start difference. First operand 26310 states. Second operand 3 states. [2020-10-15 19:25:00,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:25:00,779 INFO L93 Difference]: Finished difference Result 26310 states and 110676 transitions. [2020-10-15 19:25:00,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 19:25:00,780 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-15 19:25:00,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:25:00,901 INFO L225 Difference]: With dead ends: 26310 [2020-10-15 19:25:00,901 INFO L226 Difference]: Without dead ends: 23184 [2020-10-15 19:25:00,901 INFO L677 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 [2020-10-15 19:25:01,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23184 states. [2020-10-15 19:25:02,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23184 to 23184. [2020-10-15 19:25:02,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23184 states. [2020-10-15 19:25:02,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23184 states to 23184 states and 98175 transitions. [2020-10-15 19:25:02,959 INFO L78 Accepts]: Start accepts. Automaton has 23184 states and 98175 transitions. Word has length 4 [2020-10-15 19:25:02,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:25:02,959 INFO L481 AbstractCegarLoop]: Abstraction has 23184 states and 98175 transitions. [2020-10-15 19:25:02,959 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 19:25:02,960 INFO L276 IsEmpty]: Start isEmpty. Operand 23184 states and 98175 transitions. [2020-10-15 19:25:02,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-15 19:25:02,960 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:25:02,960 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:25:02,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 19:25:02,960 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:25:02,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:25:02,961 INFO L82 PathProgramCache]: Analyzing trace with hash 805936127, now seen corresponding path program 1 times [2020-10-15 19:25:02,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:25:02,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931773176] [2020-10-15 19:25:02,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:25:02,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:25:02,993 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-15 19:25:02,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931773176] [2020-10-15 19:25:02,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:25:02,994 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 19:25:02,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992625309] [2020-10-15 19:25:02,995 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 19:25:02,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:25:02,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 19:25:02,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-15 19:25:02,995 INFO L87 Difference]: Start difference. First operand 23184 states and 98175 transitions. Second operand 4 states. [2020-10-15 19:25:03,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:25:03,129 INFO L93 Difference]: Finished difference Result 24543 states and 99524 transitions. [2020-10-15 19:25:03,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 19:25:03,129 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-15 19:25:03,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:25:03,213 INFO L225 Difference]: With dead ends: 24543 [2020-10-15 19:25:03,213 INFO L226 Difference]: Without dead ends: 24543 [2020-10-15 19:25:03,214 INFO L677 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 [2020-10-15 19:25:03,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24543 states. [2020-10-15 19:25:04,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24543 to 23577. [2020-10-15 19:25:04,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23577 states. [2020-10-15 19:25:04,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23577 states to 23577 states and 96338 transitions. [2020-10-15 19:25:04,479 INFO L78 Accepts]: Start accepts. Automaton has 23577 states and 96338 transitions. Word has length 8 [2020-10-15 19:25:04,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:25:04,479 INFO L481 AbstractCegarLoop]: Abstraction has 23577 states and 96338 transitions. [2020-10-15 19:25:04,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 19:25:04,479 INFO L276 IsEmpty]: Start isEmpty. Operand 23577 states and 96338 transitions. [2020-10-15 19:25:04,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-15 19:25:04,480 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:25:04,481 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:25:04,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 19:25:04,481 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:25:04,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:25:04,481 INFO L82 PathProgramCache]: Analyzing trace with hash -447719219, now seen corresponding path program 1 times [2020-10-15 19:25:04,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:25:04,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241328837] [2020-10-15 19:25:04,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:25:04,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:25:04,543 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 19:25:04,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241328837] [2020-10-15 19:25:04,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833778628] [2020-10-15 19:25:04,544 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 [2020-10-15 19:25:04,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:25:04,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-15 19:25:04,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:25:04,651 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 19:25:04,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:25:04,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2020-10-15 19:25:04,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358483760] [2020-10-15 19:25:04,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 19:25:04,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:25:04,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 19:25:04,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-15 19:25:04,653 INFO L87 Difference]: Start difference. First operand 23577 states and 96338 transitions. Second operand 7 states. [2020-10-15 19:25:04,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:25:04,825 INFO L93 Difference]: Finished difference Result 22356 states and 87745 transitions. [2020-10-15 19:25:04,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 19:25:04,826 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-10-15 19:25:04,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:25:04,890 INFO L225 Difference]: With dead ends: 22356 [2020-10-15 19:25:04,890 INFO L226 Difference]: Without dead ends: 22356 [2020-10-15 19:25:04,891 INFO L677 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 [2020-10-15 19:25:05,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22356 states. [2020-10-15 19:25:06,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22356 to 21826. [2020-10-15 19:25:06,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21826 states. [2020-10-15 19:25:06,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21826 states to 21826 states and 86349 transitions. [2020-10-15 19:25:06,806 INFO L78 Accepts]: Start accepts. Automaton has 21826 states and 86349 transitions. Word has length 16 [2020-10-15 19:25:06,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:25:06,806 INFO L481 AbstractCegarLoop]: Abstraction has 21826 states and 86349 transitions. [2020-10-15 19:25:06,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 19:25:06,807 INFO L276 IsEmpty]: Start isEmpty. Operand 21826 states and 86349 transitions. [2020-10-15 19:25:06,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-15 19:25:06,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:25:06,813 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:25:07,027 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-10-15 19:25:07,028 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:25:07,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:25:07,029 INFO L82 PathProgramCache]: Analyzing trace with hash -1012463302, now seen corresponding path program 1 times [2020-10-15 19:25:07,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:25:07,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154585243] [2020-10-15 19:25:07,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:25:07,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 19:25:07,045 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 19:25:07,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 19:25:07,058 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 19:25:07,070 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-15 19:25:07,070 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-15 19:25:07,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 19:25:07,071 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-15 19:25:07,071 WARN L371 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-15 19:25:07,072 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2020-10-15 19:25:07,087 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:07,087 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:07,087 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:07,087 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:07,087 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:07,088 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:07,088 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:07,088 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:07,088 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:07,088 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:07,088 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:07,088 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:07,089 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:07,089 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:07,089 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:07,089 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:07,089 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:07,089 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:07,090 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:07,090 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:07,090 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:07,090 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:07,090 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:07,090 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:07,090 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:07,091 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:07,091 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:07,091 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:07,091 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:07,091 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:07,091 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:07,092 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:07,092 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:07,092 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:07,092 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:07,092 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:07,092 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:07,093 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:07,093 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:07,093 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:07,093 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:07,093 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:07,093 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:07,094 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:07,094 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:07,094 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:07,094 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:07,097 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:07,097 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:07,098 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:07,098 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:07,098 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:07,099 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:07,099 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:07,099 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:07,099 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:07,100 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:07,101 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:07,101 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:07,101 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:07,101 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:07,101 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:07,102 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:07,102 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:07,102 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:07,102 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:07,103 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:07,104 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:07,104 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:07,105 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:07,105 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:07,105 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:07,111 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-15 19:25:07,111 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 19:25:07,111 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 19:25:07,111 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 19:25:07,111 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 19:25:07,111 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 19:25:07,112 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 19:25:07,112 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 19:25:07,112 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 19:25:07,114 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 19:25:07,114 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 107 places, 106 transitions, 290 flow [2020-10-15 19:25:07,115 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 107 places, 106 transitions, 290 flow [2020-10-15 19:25:07,115 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 107 places, 106 transitions, 290 flow [2020-10-15 19:25:07,390 INFO L129 PetriNetUnfolder]: 399/2291 cut-off events. [2020-10-15 19:25:07,390 INFO L130 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2020-10-15 19:25:07,402 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. [2020-10-15 19:25:07,446 INFO L117 LiptonReduction]: Number of co-enabled transitions 3660 [2020-10-15 19:25:09,123 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-10-15 19:25:09,205 INFO L132 LiptonReduction]: Checked pairs total: 14446 [2020-10-15 19:25:09,205 INFO L134 LiptonReduction]: Total number of compositions: 76 [2020-10-15 19:25:09,205 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 49 places, 43 transitions, 164 flow [2020-10-15 19:25:39,288 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 127122 states. [2020-10-15 19:25:39,288 INFO L276 IsEmpty]: Start isEmpty. Operand 127122 states. [2020-10-15 19:25:39,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-15 19:25:39,288 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:25:39,288 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-15 19:25:39,289 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:25:39,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:25:39,289 INFO L82 PathProgramCache]: Analyzing trace with hash 35155697, now seen corresponding path program 1 times [2020-10-15 19:25:39,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:25:39,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813367712] [2020-10-15 19:25:39,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:25:39,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:25:39,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:25:39,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813367712] [2020-10-15 19:25:39,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:25:39,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 19:25:39,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684825648] [2020-10-15 19:25:39,305 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 19:25:39,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:25:39,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 19:25:39,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 19:25:39,305 INFO L87 Difference]: Start difference. First operand 127122 states. Second operand 3 states. [2020-10-15 19:25:40,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:25:40,545 INFO L93 Difference]: Finished difference Result 127122 states and 615398 transitions. [2020-10-15 19:25:40,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 19:25:40,545 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-15 19:25:40,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:25:40,941 INFO L225 Difference]: With dead ends: 127122 [2020-10-15 19:25:40,941 INFO L226 Difference]: Without dead ends: 111496 [2020-10-15 19:25:40,942 INFO L677 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 [2020-10-15 19:25:48,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111496 states. [2020-10-15 19:25:50,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111496 to 111496. [2020-10-15 19:25:50,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111496 states. [2020-10-15 19:25:50,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111496 states to 111496 states and 543522 transitions. [2020-10-15 19:25:50,468 INFO L78 Accepts]: Start accepts. Automaton has 111496 states and 543522 transitions. Word has length 4 [2020-10-15 19:25:50,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:25:50,468 INFO L481 AbstractCegarLoop]: Abstraction has 111496 states and 543522 transitions. [2020-10-15 19:25:50,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 19:25:50,469 INFO L276 IsEmpty]: Start isEmpty. Operand 111496 states and 543522 transitions. [2020-10-15 19:25:50,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-15 19:25:50,469 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:25:50,469 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:25:50,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 19:25:50,469 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:25:50,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:25:50,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1170285684, now seen corresponding path program 1 times [2020-10-15 19:25:50,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:25:50,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846290369] [2020-10-15 19:25:50,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:25:50,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:25:50,497 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-15 19:25:50,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846290369] [2020-10-15 19:25:50,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:25:50,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 19:25:50,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274553632] [2020-10-15 19:25:50,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 19:25:50,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:25:50,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 19:25:50,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-15 19:25:50,499 INFO L87 Difference]: Start difference. First operand 111496 states and 543522 transitions. Second operand 4 states. [2020-10-15 19:25:52,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:25:52,176 INFO L93 Difference]: Finished difference Result 120747 states and 568406 transitions. [2020-10-15 19:25:52,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 19:25:52,176 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-15 19:25:52,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:25:52,562 INFO L225 Difference]: With dead ends: 120747 [2020-10-15 19:25:52,563 INFO L226 Difference]: Without dead ends: 120747 [2020-10-15 19:25:52,563 INFO L677 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 [2020-10-15 19:26:01,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120747 states. [2020-10-15 19:26:03,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120747 to 116197. [2020-10-15 19:26:03,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116197 states. [2020-10-15 19:26:03,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116197 states to 116197 states and 549860 transitions. [2020-10-15 19:26:03,712 INFO L78 Accepts]: Start accepts. Automaton has 116197 states and 549860 transitions. Word has length 8 [2020-10-15 19:26:03,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:26:03,712 INFO L481 AbstractCegarLoop]: Abstraction has 116197 states and 549860 transitions. [2020-10-15 19:26:03,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 19:26:03,712 INFO L276 IsEmpty]: Start isEmpty. Operand 116197 states and 549860 transitions. [2020-10-15 19:26:03,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-15 19:26:03,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:26:03,713 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:26:03,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-15 19:26:03,714 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:26:03,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:26:03,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1082449829, now seen corresponding path program 1 times [2020-10-15 19:26:03,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:26:03,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045987875] [2020-10-15 19:26:03,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:26:03,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:03,745 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 19:26:03,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045987875] [2020-10-15 19:26:03,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173227627] [2020-10-15 19:26:03,746 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 [2020-10-15 19:26:03,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:03,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-15 19:26:03,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:26:03,832 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 19:26:03,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:26:03,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-10-15 19:26:03,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108726391] [2020-10-15 19:26:03,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 19:26:03,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:26:03,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 19:26:03,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-15 19:26:03,834 INFO L87 Difference]: Start difference. First operand 116197 states and 549860 transitions. Second operand 6 states. [2020-10-15 19:26:08,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:26:08,433 INFO L93 Difference]: Finished difference Result 116193 states and 549849 transitions. [2020-10-15 19:26:08,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 19:26:08,433 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-15 19:26:08,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:26:08,775 INFO L225 Difference]: With dead ends: 116193 [2020-10-15 19:26:08,776 INFO L226 Difference]: Without dead ends: 116193 [2020-10-15 19:26:08,776 INFO L677 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 [2020-10-15 19:26:11,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116193 states. [2020-10-15 19:26:13,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116193 to 116193. [2020-10-15 19:26:13,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116193 states. [2020-10-15 19:26:13,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116193 states to 116193 states and 549849 transitions. [2020-10-15 19:26:13,982 INFO L78 Accepts]: Start accepts. Automaton has 116193 states and 549849 transitions. Word has length 16 [2020-10-15 19:26:13,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:26:13,982 INFO L481 AbstractCegarLoop]: Abstraction has 116193 states and 549849 transitions. [2020-10-15 19:26:13,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 19:26:13,983 INFO L276 IsEmpty]: Start isEmpty. Operand 116193 states and 549849 transitions. [2020-10-15 19:26:13,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-15 19:26:13,984 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:26:13,985 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:26:14,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:26:14,192 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:26:14,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:26:14,192 INFO L82 PathProgramCache]: Analyzing trace with hash 173719339, now seen corresponding path program 1 times [2020-10-15 19:26:14,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:26:14,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033315827] [2020-10-15 19:26:14,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:26:14,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:14,240 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 19:26:14,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033315827] [2020-10-15 19:26:14,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416471627] [2020-10-15 19:26:14,240 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 [2020-10-15 19:26:14,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:14,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-15 19:26:14,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:26:14,350 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 19:26:14,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:26:14,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-10-15 19:26:14,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106158778] [2020-10-15 19:26:14,351 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 19:26:14,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:26:14,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 19:26:14,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2020-10-15 19:26:14,352 INFO L87 Difference]: Start difference. First operand 116193 states and 549849 transitions. Second operand 8 states. [2020-10-15 19:26:14,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:26:14,964 INFO L93 Difference]: Finished difference Result 116177 states and 549793 transitions. [2020-10-15 19:26:14,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 19:26:14,965 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-10-15 19:26:14,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:26:15,296 INFO L225 Difference]: With dead ends: 116177 [2020-10-15 19:26:15,296 INFO L226 Difference]: Without dead ends: 116177 [2020-10-15 19:26:15,297 INFO L677 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 [2020-10-15 19:26:22,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116177 states. [2020-10-15 19:26:24,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116177 to 116177. [2020-10-15 19:26:24,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116177 states. [2020-10-15 19:26:24,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116177 states to 116177 states and 549793 transitions. [2020-10-15 19:26:24,983 INFO L78 Accepts]: Start accepts. Automaton has 116177 states and 549793 transitions. Word has length 20 [2020-10-15 19:26:24,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:26:24,983 INFO L481 AbstractCegarLoop]: Abstraction has 116177 states and 549793 transitions. [2020-10-15 19:26:24,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 19:26:24,983 INFO L276 IsEmpty]: Start isEmpty. Operand 116177 states and 549793 transitions. [2020-10-15 19:26:24,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-15 19:26:24,989 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:26:24,989 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:26:25,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:26:25,205 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:26:25,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:26:25,205 INFO L82 PathProgramCache]: Analyzing trace with hash -999416206, now seen corresponding path program 1 times [2020-10-15 19:26:25,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:26:25,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045663845] [2020-10-15 19:26:25,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:26:25,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:25,261 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 19:26:25,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045663845] [2020-10-15 19:26:25,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929696420] [2020-10-15 19:26:25,262 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 [2020-10-15 19:26:25,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:25,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-15 19:26:25,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:26:25,395 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 19:26:25,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:26:25,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-15 19:26:25,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129955705] [2020-10-15 19:26:25,398 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 19:26:25,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:26:25,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 19:26:25,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=48, Unknown=0, NotChecked=0, Total=90 [2020-10-15 19:26:25,400 INFO L87 Difference]: Start difference. First operand 116177 states and 549793 transitions. Second operand 10 states. [2020-10-15 19:26:26,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:26:26,158 INFO L93 Difference]: Finished difference Result 116113 states and 549521 transitions. [2020-10-15 19:26:26,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 19:26:26,159 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2020-10-15 19:26:26,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:26:27,851 INFO L225 Difference]: With dead ends: 116113 [2020-10-15 19:26:27,851 INFO L226 Difference]: Without dead ends: 116113 [2020-10-15 19:26:27,852 INFO L677 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 [2020-10-15 19:26:29,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116113 states. [2020-10-15 19:26:37,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116113 to 116113. [2020-10-15 19:26:37,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116113 states. [2020-10-15 19:26:37,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116113 states to 116113 states and 549521 transitions. [2020-10-15 19:26:37,814 INFO L78 Accepts]: Start accepts. Automaton has 116113 states and 549521 transitions. Word has length 24 [2020-10-15 19:26:37,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:26:37,814 INFO L481 AbstractCegarLoop]: Abstraction has 116113 states and 549521 transitions. [2020-10-15 19:26:37,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 19:26:37,815 INFO L276 IsEmpty]: Start isEmpty. Operand 116113 states and 549521 transitions. [2020-10-15 19:26:37,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 19:26:37,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:26:37,828 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:26:38,043 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-10-15 19:26:38,044 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:26:38,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:26:38,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1963695170, now seen corresponding path program 1 times [2020-10-15 19:26:38,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:26:38,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733167675] [2020-10-15 19:26:38,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:26:38,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 19:26:38,056 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 19:26:38,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 19:26:38,066 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 19:26:38,079 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-15 19:26:38,080 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-15 19:26:38,080 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-15 19:26:38,083 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-15 19:26:38,083 WARN L371 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-15 19:26:38,084 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2020-10-15 19:26:38,093 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,093 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,093 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,094 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,094 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,094 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,094 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,094 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,094 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,095 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,095 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,095 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,095 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,095 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,095 WARN L313 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,095 WARN L313 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,096 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,096 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,096 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,096 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,096 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,096 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,096 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,097 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,097 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,097 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,097 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,097 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,097 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,097 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,098 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,098 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,098 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,098 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,098 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,098 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,099 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,099 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,099 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,100 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,100 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,101 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,101 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,101 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,101 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,101 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,102 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,102 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,102 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,102 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,102 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,102 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,103 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,103 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,104 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,104 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,104 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,104 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,105 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,110 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,110 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,110 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,110 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,110 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,111 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,112 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,112 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,112 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,112 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,113 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,113 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,113 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,114 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,114 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,115 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,115 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,115 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,115 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,115 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,116 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,116 WARN L313 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,116 WARN L313 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,117 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,117 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,122 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-15 19:26:38,122 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 19:26:38,122 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 19:26:38,122 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 19:26:38,123 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 19:26:38,123 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 19:26:38,123 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 19:26:38,123 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 19:26:38,123 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 19:26:38,124 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 19:26:38,124 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 115 places, 113 transitions, 324 flow [2020-10-15 19:26:38,124 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 115 places, 113 transitions, 324 flow [2020-10-15 19:26:38,124 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 115 places, 113 transitions, 324 flow [2020-10-15 19:26:38,670 INFO L129 PetriNetUnfolder]: 849/4546 cut-off events. [2020-10-15 19:26:38,670 INFO L130 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2020-10-15 19:26:38,695 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. [2020-10-15 19:26:38,781 INFO L117 LiptonReduction]: Number of co-enabled transitions 4550 [2020-10-15 19:26:40,592 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-10-15 19:26:40,679 INFO L132 LiptonReduction]: Checked pairs total: 19547 [2020-10-15 19:26:40,680 INFO L134 LiptonReduction]: Total number of compositions: 80 [2020-10-15 19:26:40,680 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 55 places, 48 transitions, 194 flow [2020-10-15 19:37:19,059 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 617870 states. [2020-10-15 19:37:19,059 INFO L276 IsEmpty]: Start isEmpty. Operand 617870 states. [2020-10-15 19:37:19,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-15 19:37:19,059 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:37:19,060 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-15 19:37:19,060 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:37:19,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:37:19,060 INFO L82 PathProgramCache]: Analyzing trace with hash 41370148, now seen corresponding path program 1 times [2020-10-15 19:37:19,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:37:19,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766535620] [2020-10-15 19:37:19,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:37:19,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:37:19,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:37:19,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766535620] [2020-10-15 19:37:19,080 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:37:19,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 19:37:19,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569157259] [2020-10-15 19:37:19,081 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 19:37:19,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:37:19,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 19:37:19,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 19:37:19,082 INFO L87 Difference]: Start difference. First operand 617870 states. Second operand 3 states. [2020-10-15 19:37:33,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:37:33,674 INFO L93 Difference]: Finished difference Result 617870 states and 3380472 transitions. [2020-10-15 19:37:33,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 19:37:33,674 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-15 19:37:33,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:37:38,613 INFO L225 Difference]: With dead ends: 617870 [2020-10-15 19:37:38,613 INFO L226 Difference]: Without dead ends: 539744 [2020-10-15 19:37:38,613 INFO L677 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 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown