/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 0.1.25-11af1e5 [2020-10-09 13:48:14,904 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-09 13:48:14,908 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-09 13:48:14,946 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-09 13:48:14,947 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-09 13:48:14,955 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-09 13:48:14,958 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-09 13:48:14,962 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-09 13:48:14,964 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-09 13:48:14,967 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-09 13:48:14,968 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-09 13:48:14,969 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-09 13:48:14,969 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-09 13:48:14,972 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-09 13:48:14,975 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-09 13:48:14,977 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-09 13:48:14,978 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-09 13:48:14,981 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-09 13:48:14,982 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-09 13:48:14,990 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-09 13:48:14,992 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-09 13:48:14,993 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-09 13:48:14,994 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-09 13:48:14,995 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-09 13:48:15,010 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-09 13:48:15,016 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-09 13:48:15,017 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-09 13:48:15,018 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-09 13:48:15,018 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-09 13:48:15,023 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-09 13:48:15,023 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-09 13:48:15,024 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-09 13:48:15,024 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-09 13:48:15,024 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-09 13:48:15,025 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-09 13:48:15,028 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-09 13:48:15,029 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 [2020-10-09 13:48:15,064 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-09 13:48:15,064 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-09 13:48:15,066 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-09 13:48:15,066 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-09 13:48:15,066 INFO L138 SettingsManager]: * Use SBE=true [2020-10-09 13:48:15,066 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-09 13:48:15,067 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-09 13:48:15,067 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-09 13:48:15,067 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-09 13:48:15,067 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-09 13:48:15,067 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-09 13:48:15,068 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-09 13:48:15,068 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-09 13:48:15,068 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-09 13:48:15,068 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-09 13:48:15,068 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-09 13:48:15,068 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-09 13:48:15,069 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-09 13:48:15,069 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-09 13:48:15,069 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-09 13:48:15,069 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-09 13:48:15,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-09 13:48:15,070 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-09 13:48:15,070 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-09 13:48:15,070 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-09 13:48:15,070 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-09 13:48:15,071 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-09 13:48:15,071 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-09 13:48:15,071 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-09 13:48:15,071 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-09 13:48:15,373 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-09 13:48:15,390 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-09 13:48:15,394 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-09 13:48:15,395 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-09 13:48:15,396 INFO L275 PluginConnector]: CDTParser initialized [2020-10-09 13:48:15,397 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-nondet/nondet-array-2.i [2020-10-09 13:48:15,473 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e34363069/904ce0c7a1bd4dd2b53fc91a5e561135/FLAG515c125f9 [2020-10-09 13:48:16,082 INFO L306 CDTParser]: Found 1 translation units. [2020-10-09 13:48:16,083 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-nondet/nondet-array-2.i [2020-10-09 13:48:16,106 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e34363069/904ce0c7a1bd4dd2b53fc91a5e561135/FLAG515c125f9 [2020-10-09 13:48:16,316 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e34363069/904ce0c7a1bd4dd2b53fc91a5e561135 [2020-10-09 13:48:16,324 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-09 13:48:16,326 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-09 13:48:16,327 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-09 13:48:16,327 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-09 13:48:16,331 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-09 13:48:16,332 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 01:48:16" (1/1) ... [2020-10-09 13:48:16,335 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11821a8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:48:16, skipping insertion in model container [2020-10-09 13:48:16,335 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 01:48:16" (1/1) ... [2020-10-09 13:48:16,343 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-09 13:48:16,381 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-09 13:48:16,860 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 13:48:16,879 INFO L203 MainTranslator]: Completed pre-run [2020-10-09 13:48:16,936 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 13:48:17,012 INFO L208 MainTranslator]: Completed translation [2020-10-09 13:48:17,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:48:17 WrapperNode [2020-10-09 13:48:17,013 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-09 13:48:17,014 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-09 13:48:17,014 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-09 13:48:17,014 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-09 13:48:17,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:48:17" (1/1) ... [2020-10-09 13:48:17,040 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:48:17" (1/1) ... [2020-10-09 13:48:17,064 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-09 13:48:17,065 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-09 13:48:17,065 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-09 13:48:17,065 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-09 13:48:17,073 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:48:17" (1/1) ... [2020-10-09 13:48:17,073 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:48:17" (1/1) ... [2020-10-09 13:48:17,078 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:48:17" (1/1) ... [2020-10-09 13:48:17,078 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:48:17" (1/1) ... [2020-10-09 13:48:17,086 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:48:17" (1/1) ... [2020-10-09 13:48:17,090 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:48:17" (1/1) ... [2020-10-09 13:48:17,092 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:48:17" (1/1) ... [2020-10-09 13:48:17,096 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-09 13:48:17,096 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-09 13:48:17,096 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-09 13:48:17,096 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-09 13:48:17,097 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:48:17" (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 [2020-10-09 13:48:17,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-10-09 13:48:17,178 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-09 13:48:17,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-09 13:48:17,179 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2020-10-09 13:48:17,179 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2020-10-09 13:48:17,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-09 13:48:17,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-09 13:48:17,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-09 13:48:17,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-09 13:48:17,182 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-09 13:48:17,528 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-09 13:48:17,528 INFO L298 CfgBuilder]: Removed 11 assume(true) statements. [2020-10-09 13:48:17,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 01:48:17 BoogieIcfgContainer [2020-10-09 13:48:17,530 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-09 13:48:17,532 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-09 13:48:17,532 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-09 13:48:17,535 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-09 13:48:17,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.10 01:48:16" (1/3) ... [2020-10-09 13:48:17,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34e0cf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 01:48:17, skipping insertion in model container [2020-10-09 13:48:17,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:48:17" (2/3) ... [2020-10-09 13:48:17,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34e0cf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 01:48:17, skipping insertion in model container [2020-10-09 13:48:17,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 01:48:17" (3/3) ... [2020-10-09 13:48:17,539 INFO L111 eAbstractionObserver]: Analyzing ICFG nondet-array-2.i [2020-10-09 13:48:17,551 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-09 13:48:17,551 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-09 13:48:17,559 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-09 13:48:17,560 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-09 13:48:17,587 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:17,587 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:17,588 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:17,588 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:17,588 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:17,589 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:17,589 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:17,593 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:17,593 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:17,593 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:17,594 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:17,594 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:17,626 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-09 13:48:17,644 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-09 13:48:17,644 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-09 13:48:17,644 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-09 13:48:17,644 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-09 13:48:17,644 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-09 13:48:17,644 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-09 13:48:17,645 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-09 13:48:17,645 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-09 13:48:17,656 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-09 13:48:17,658 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 67 places, 71 transitions, 150 flow [2020-10-09 13:48:17,661 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 67 places, 71 transitions, 150 flow [2020-10-09 13:48:17,663 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 67 places, 71 transitions, 150 flow [2020-10-09 13:48:17,717 INFO L129 PetriNetUnfolder]: 12/103 cut-off events. [2020-10-09 13:48:17,718 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-10-09 13:48:17,722 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. [2020-10-09 13:48:17,725 INFO L117 LiptonReduction]: Number of co-enabled transitions 370 [2020-10-09 13:48:19,091 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2020-10-09 13:48:19,332 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2020-10-09 13:48:19,505 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2020-10-09 13:48:19,603 INFO L132 LiptonReduction]: Checked pairs total: 397 [2020-10-09 13:48:19,603 INFO L134 LiptonReduction]: Total number of compositions: 71 [2020-10-09 13:48:19,613 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 15 places, 14 transitions, 36 flow [2020-10-09 13:48:19,622 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 27 states. [2020-10-09 13:48:19,624 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-10-09 13:48:19,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-09 13:48:19,630 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:48:19,631 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-09 13:48:19,632 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:48:19,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:48:19,638 INFO L82 PathProgramCache]: Analyzing trace with hash 8680406, now seen corresponding path program 1 times [2020-10-09 13:48:19,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:48:19,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735520365] [2020-10-09 13:48:19,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:48:19,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:48:19,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 13:48:19,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735520365] [2020-10-09 13:48:19,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:48:19,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-09 13:48:19,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016095537] [2020-10-09 13:48:19,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-09 13:48:19,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:48:19,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-09 13:48:19,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-09 13:48:19,847 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 3 states. [2020-10-09 13:48:19,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:48:19,896 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2020-10-09 13:48:19,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-09 13:48:19,897 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-09 13:48:19,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:48:19,908 INFO L225 Difference]: With dead ends: 27 [2020-10-09 13:48:19,908 INFO L226 Difference]: Without dead ends: 23 [2020-10-09 13:48:19,909 INFO L673 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 [2020-10-09 13:48:19,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-09 13:48:19,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-10-09 13:48:19,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-09 13:48:19,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 32 transitions. [2020-10-09 13:48:19,946 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 32 transitions. Word has length 4 [2020-10-09 13:48:19,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:48:19,946 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 32 transitions. [2020-10-09 13:48:19,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-09 13:48:19,946 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 32 transitions. [2020-10-09 13:48:19,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-09 13:48:19,947 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:48:19,947 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2020-10-09 13:48:19,947 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-09 13:48:19,947 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:48:19,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:48:19,948 INFO L82 PathProgramCache]: Analyzing trace with hash -256835414, now seen corresponding path program 1 times [2020-10-09 13:48:19,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:48:19,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223662582] [2020-10-09 13:48:19,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:48:19,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-09 13:48:19,982 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-09 13:48:20,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-09 13:48:20,012 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-09 13:48:20,036 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-09 13:48:20,036 INFO L519 BasicCegarLoop]: Counterexample might be feasible [2020-10-09 13:48:20,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-09 13:48:20,037 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-09 13:48:20,039 WARN L371 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-09 13:48:20,039 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-10-09 13:48:20,046 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:20,046 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:20,046 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:20,046 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:20,047 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:20,047 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:20,047 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:20,047 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:20,048 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:20,048 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:20,048 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:20,048 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:20,048 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:20,049 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:20,049 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:20,049 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:20,050 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:20,050 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:20,050 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:20,053 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:20,054 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:20,054 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:20,054 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:20,054 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:20,057 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-09 13:48:20,058 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-09 13:48:20,058 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-09 13:48:20,058 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-09 13:48:20,058 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-09 13:48:20,058 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-09 13:48:20,058 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-09 13:48:20,059 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-09 13:48:20,059 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-09 13:48:20,061 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-09 13:48:20,061 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 78 transitions, 174 flow [2020-10-09 13:48:20,062 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 75 places, 78 transitions, 174 flow [2020-10-09 13:48:20,062 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 75 places, 78 transitions, 174 flow [2020-10-09 13:48:20,100 INFO L129 PetriNetUnfolder]: 23/183 cut-off events. [2020-10-09 13:48:20,100 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2020-10-09 13:48:20,102 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. [2020-10-09 13:48:20,105 INFO L117 LiptonReduction]: Number of co-enabled transitions 900 [2020-10-09 13:48:21,290 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2020-10-09 13:48:21,582 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2020-10-09 13:48:21,687 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-09 13:48:21,824 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 67 [2020-10-09 13:48:21,891 INFO L132 LiptonReduction]: Checked pairs total: 2415 [2020-10-09 13:48:21,892 INFO L134 LiptonReduction]: Total number of compositions: 67 [2020-10-09 13:48:21,892 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 25 places, 23 transitions, 64 flow [2020-10-09 13:48:21,905 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 242 states. [2020-10-09 13:48:21,906 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states. [2020-10-09 13:48:21,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-09 13:48:21,907 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:48:21,907 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-09 13:48:21,907 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:48:21,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:48:21,907 INFO L82 PathProgramCache]: Analyzing trace with hash 13452069, now seen corresponding path program 1 times [2020-10-09 13:48:21,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:48:21,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478617808] [2020-10-09 13:48:21,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:48:21,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:48:21,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 13:48:21,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478617808] [2020-10-09 13:48:21,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:48:21,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-09 13:48:21,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842978513] [2020-10-09 13:48:21,979 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-09 13:48:21,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:48:21,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-09 13:48:21,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-09 13:48:21,981 INFO L87 Difference]: Start difference. First operand 242 states. Second operand 3 states. [2020-10-09 13:48:22,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:48:22,027 INFO L93 Difference]: Finished difference Result 242 states and 550 transitions. [2020-10-09 13:48:22,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-09 13:48:22,029 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-09 13:48:22,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:48:22,041 INFO L225 Difference]: With dead ends: 242 [2020-10-09 13:48:22,041 INFO L226 Difference]: Without dead ends: 216 [2020-10-09 13:48:22,041 INFO L673 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 [2020-10-09 13:48:22,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-10-09 13:48:22,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2020-10-09 13:48:22,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-10-09 13:48:22,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 494 transitions. [2020-10-09 13:48:22,084 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 494 transitions. Word has length 4 [2020-10-09 13:48:22,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:48:22,084 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 494 transitions. [2020-10-09 13:48:22,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-09 13:48:22,085 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 494 transitions. [2020-10-09 13:48:22,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-09 13:48:22,085 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:48:22,086 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:48:22,086 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-09 13:48:22,086 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:48:22,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:48:22,087 INFO L82 PathProgramCache]: Analyzing trace with hash 76722491, now seen corresponding path program 1 times [2020-10-09 13:48:22,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:48:22,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225971420] [2020-10-09 13:48:22,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:48:22,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:48:22,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-09 13:48:22,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225971420] [2020-10-09 13:48:22,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:48:22,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-09 13:48:22,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076231337] [2020-10-09 13:48:22,137 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-09 13:48:22,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:48:22,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-09 13:48:22,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-09 13:48:22,138 INFO L87 Difference]: Start difference. First operand 216 states and 494 transitions. Second operand 4 states. [2020-10-09 13:48:22,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:48:22,181 INFO L93 Difference]: Finished difference Result 203 states and 426 transitions. [2020-10-09 13:48:22,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-09 13:48:22,181 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-09 13:48:22,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:48:22,184 INFO L225 Difference]: With dead ends: 203 [2020-10-09 13:48:22,184 INFO L226 Difference]: Without dead ends: 203 [2020-10-09 13:48:22,185 INFO L673 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 [2020-10-09 13:48:22,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-10-09 13:48:22,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 197. [2020-10-09 13:48:22,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-10-09 13:48:22,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 420 transitions. [2020-10-09 13:48:22,198 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 420 transitions. Word has length 8 [2020-10-09 13:48:22,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:48:22,199 INFO L481 AbstractCegarLoop]: Abstraction has 197 states and 420 transitions. [2020-10-09 13:48:22,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-09 13:48:22,199 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 420 transitions. [2020-10-09 13:48:22,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-09 13:48:22,200 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:48:22,200 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2020-10-09 13:48:22,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-09 13:48:22,201 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:48:22,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:48:22,201 INFO L82 PathProgramCache]: Analyzing trace with hash 94633273, now seen corresponding path program 1 times [2020-10-09 13:48:22,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:48:22,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601229308] [2020-10-09 13:48:22,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:48:22,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-09 13:48:22,221 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-09 13:48:22,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-09 13:48:22,236 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-09 13:48:22,254 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-09 13:48:22,255 INFO L519 BasicCegarLoop]: Counterexample might be feasible [2020-10-09 13:48:22,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-09 13:48:22,255 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-09 13:48:22,256 WARN L371 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-09 13:48:22,257 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-10-09 13:48:22,268 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:22,269 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:22,269 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:22,269 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:22,269 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:22,269 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:22,269 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:22,270 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:22,270 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:22,271 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:22,271 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:22,272 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:22,272 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:22,272 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:22,272 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:22,272 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:22,273 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:22,273 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:22,273 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:22,273 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:22,273 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:22,274 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:22,274 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:22,276 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:22,276 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:22,276 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:22,279 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:22,279 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:22,279 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:22,279 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:22,279 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:22,284 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:22,284 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:22,284 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:22,284 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:22,284 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:22,286 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-09 13:48:22,287 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-09 13:48:22,287 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-09 13:48:22,287 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-09 13:48:22,287 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-09 13:48:22,287 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-09 13:48:22,287 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-09 13:48:22,287 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-09 13:48:22,288 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-09 13:48:22,289 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-09 13:48:22,290 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 85 transitions, 200 flow [2020-10-09 13:48:22,290 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 85 transitions, 200 flow [2020-10-09 13:48:22,290 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 83 places, 85 transitions, 200 flow [2020-10-09 13:48:22,341 INFO L129 PetriNetUnfolder]: 45/330 cut-off events. [2020-10-09 13:48:22,341 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2020-10-09 13:48:22,342 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. [2020-10-09 13:48:22,347 INFO L117 LiptonReduction]: Number of co-enabled transitions 1470 [2020-10-09 13:48:23,690 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-10-09 13:48:23,787 INFO L132 LiptonReduction]: Checked pairs total: 4432 [2020-10-09 13:48:23,787 INFO L134 LiptonReduction]: Total number of compositions: 73 [2020-10-09 13:48:23,788 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 28 transitions, 86 flow [2020-10-09 13:48:23,839 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1150 states. [2020-10-09 13:48:23,839 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states. [2020-10-09 13:48:23,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-09 13:48:23,840 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:48:23,840 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-09 13:48:23,840 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:48:23,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:48:23,841 INFO L82 PathProgramCache]: Analyzing trace with hash 18528206, now seen corresponding path program 1 times [2020-10-09 13:48:23,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:48:23,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111493944] [2020-10-09 13:48:23,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:48:23,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:48:23,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 13:48:23,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111493944] [2020-10-09 13:48:23,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:48:23,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-09 13:48:23,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442873472] [2020-10-09 13:48:23,874 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-09 13:48:23,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:48:23,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-09 13:48:23,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-09 13:48:23,875 INFO L87 Difference]: Start difference. First operand 1150 states. Second operand 3 states. [2020-10-09 13:48:23,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:48:23,910 INFO L93 Difference]: Finished difference Result 1150 states and 3360 transitions. [2020-10-09 13:48:23,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-09 13:48:23,910 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-09 13:48:23,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:48:23,923 INFO L225 Difference]: With dead ends: 1150 [2020-10-09 13:48:23,923 INFO L226 Difference]: Without dead ends: 1024 [2020-10-09 13:48:23,924 INFO L673 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 [2020-10-09 13:48:23,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2020-10-09 13:48:23,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 1024. [2020-10-09 13:48:23,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1024 states. [2020-10-09 13:48:23,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 3009 transitions. [2020-10-09 13:48:23,991 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 3009 transitions. Word has length 4 [2020-10-09 13:48:23,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:48:23,991 INFO L481 AbstractCegarLoop]: Abstraction has 1024 states and 3009 transitions. [2020-10-09 13:48:23,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-09 13:48:23,991 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 3009 transitions. [2020-10-09 13:48:23,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-09 13:48:23,992 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:48:23,992 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:48:23,993 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-09 13:48:23,993 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:48:23,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:48:23,993 INFO L82 PathProgramCache]: Analyzing trace with hash 949696130, now seen corresponding path program 1 times [2020-10-09 13:48:23,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:48:23,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890584569] [2020-10-09 13:48:23,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:48:24,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:48:24,056 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-09 13:48:24,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890584569] [2020-10-09 13:48:24,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:48:24,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-09 13:48:24,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353407531] [2020-10-09 13:48:24,058 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-09 13:48:24,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:48:24,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-09 13:48:24,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-09 13:48:24,059 INFO L87 Difference]: Start difference. First operand 1024 states and 3009 transitions. Second operand 4 states. [2020-10-09 13:48:24,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:48:24,095 INFO L93 Difference]: Finished difference Result 1015 states and 2784 transitions. [2020-10-09 13:48:24,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-09 13:48:24,095 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-09 13:48:24,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:48:24,104 INFO L225 Difference]: With dead ends: 1015 [2020-10-09 13:48:24,104 INFO L226 Difference]: Without dead ends: 1015 [2020-10-09 13:48:24,105 INFO L673 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 [2020-10-09 13:48:24,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2020-10-09 13:48:24,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 977. [2020-10-09 13:48:24,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 977 states. [2020-10-09 13:48:24,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 2718 transitions. [2020-10-09 13:48:24,140 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 2718 transitions. Word has length 8 [2020-10-09 13:48:24,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:48:24,141 INFO L481 AbstractCegarLoop]: Abstraction has 977 states and 2718 transitions. [2020-10-09 13:48:24,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-09 13:48:24,141 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 2718 transitions. [2020-10-09 13:48:24,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-09 13:48:24,144 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:48:24,144 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2020-10-09 13:48:24,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-09 13:48:24,144 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:48:24,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:48:24,145 INFO L82 PathProgramCache]: Analyzing trace with hash -515475845, now seen corresponding path program 1 times [2020-10-09 13:48:24,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:48:24,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692664755] [2020-10-09 13:48:24,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:48:24,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-09 13:48:24,161 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-09 13:48:24,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-09 13:48:24,173 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-09 13:48:24,180 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-09 13:48:24,180 INFO L519 BasicCegarLoop]: Counterexample might be feasible [2020-10-09 13:48:24,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-09 13:48:24,181 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-09 13:48:24,181 WARN L371 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-09 13:48:24,182 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-10-09 13:48:24,188 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:24,189 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:24,189 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:24,189 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:24,189 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:24,190 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:24,190 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:24,190 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:24,190 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:24,190 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:24,190 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:24,191 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:24,191 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:24,191 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:24,191 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:24,191 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:24,192 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:24,192 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:24,192 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:24,192 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:24,192 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:24,193 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:24,193 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:24,193 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:24,193 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:24,193 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:24,193 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:24,193 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:24,194 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:24,194 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:24,194 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:24,194 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:24,195 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:24,198 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:24,199 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:24,199 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:24,199 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:24,199 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:24,200 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:24,201 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:24,201 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:24,201 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:24,201 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:24,202 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:24,202 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:24,203 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:24,203 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:24,203 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:24,207 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-09 13:48:24,207 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-09 13:48:24,207 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-09 13:48:24,207 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-09 13:48:24,208 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-09 13:48:24,208 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-09 13:48:24,208 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-09 13:48:24,208 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-09 13:48:24,208 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-09 13:48:24,210 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-09 13:48:24,210 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 92 transitions, 228 flow [2020-10-09 13:48:24,210 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 91 places, 92 transitions, 228 flow [2020-10-09 13:48:24,210 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 92 transitions, 228 flow [2020-10-09 13:48:24,303 INFO L129 PetriNetUnfolder]: 91/613 cut-off events. [2020-10-09 13:48:24,304 INFO L130 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2020-10-09 13:48:24,306 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. [2020-10-09 13:48:24,316 INFO L117 LiptonReduction]: Number of co-enabled transitions 2120 [2020-10-09 13:48:25,769 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-10-09 13:48:25,875 INFO L132 LiptonReduction]: Checked pairs total: 7163 [2020-10-09 13:48:25,875 INFO L134 LiptonReduction]: Total number of compositions: 73 [2020-10-09 13:48:25,875 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 37 places, 33 transitions, 110 flow [2020-10-09 13:48:26,204 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 5482 states. [2020-10-09 13:48:26,204 INFO L276 IsEmpty]: Start isEmpty. Operand 5482 states. [2020-10-09 13:48:26,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-09 13:48:26,205 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:48:26,205 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-09 13:48:26,205 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:48:26,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:48:26,206 INFO L82 PathProgramCache]: Analyzing trace with hash 23824947, now seen corresponding path program 1 times [2020-10-09 13:48:26,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:48:26,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376192037] [2020-10-09 13:48:26,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:48:26,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:48:26,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 13:48:26,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376192037] [2020-10-09 13:48:26,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:48:26,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-09 13:48:26,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84346827] [2020-10-09 13:48:26,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-09 13:48:26,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:48:26,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-09 13:48:26,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-09 13:48:26,240 INFO L87 Difference]: Start difference. First operand 5482 states. Second operand 3 states. [2020-10-09 13:48:26,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:48:26,327 INFO L93 Difference]: Finished difference Result 5482 states and 19554 transitions. [2020-10-09 13:48:26,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-09 13:48:26,328 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-09 13:48:26,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:48:26,371 INFO L225 Difference]: With dead ends: 5482 [2020-10-09 13:48:26,371 INFO L226 Difference]: Without dead ends: 4856 [2020-10-09 13:48:26,372 INFO L673 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 [2020-10-09 13:48:26,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4856 states. [2020-10-09 13:48:26,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4856 to 4856. [2020-10-09 13:48:26,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4856 states. [2020-10-09 13:48:26,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4856 states to 4856 states and 17428 transitions. [2020-10-09 13:48:26,609 INFO L78 Accepts]: Start accepts. Automaton has 4856 states and 17428 transitions. Word has length 4 [2020-10-09 13:48:26,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:48:26,609 INFO L481 AbstractCegarLoop]: Abstraction has 4856 states and 17428 transitions. [2020-10-09 13:48:26,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-09 13:48:26,609 INFO L276 IsEmpty]: Start isEmpty. Operand 4856 states and 17428 transitions. [2020-10-09 13:48:26,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-09 13:48:26,611 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:48:26,611 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:48:26,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-09 13:48:26,611 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:48:26,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:48:26,611 INFO L82 PathProgramCache]: Analyzing trace with hash -1205655351, now seen corresponding path program 1 times [2020-10-09 13:48:26,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:48:26,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505630363] [2020-10-09 13:48:26,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:48:26,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:48:26,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-09 13:48:26,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505630363] [2020-10-09 13:48:26,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:48:26,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-09 13:48:26,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343222602] [2020-10-09 13:48:26,661 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-09 13:48:26,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:48:26,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-09 13:48:26,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-09 13:48:26,662 INFO L87 Difference]: Start difference. First operand 4856 states and 17428 transitions. Second operand 4 states. [2020-10-09 13:48:26,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:48:26,735 INFO L93 Difference]: Finished difference Result 4995 states and 16978 transitions. [2020-10-09 13:48:26,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-09 13:48:26,736 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-09 13:48:26,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:48:26,775 INFO L225 Difference]: With dead ends: 4995 [2020-10-09 13:48:26,775 INFO L226 Difference]: Without dead ends: 4995 [2020-10-09 13:48:26,778 INFO L673 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 [2020-10-09 13:48:26,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4995 states. [2020-10-09 13:48:26,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4995 to 4797. [2020-10-09 13:48:26,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4797 states. [2020-10-09 13:48:26,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4797 states to 4797 states and 16480 transitions. [2020-10-09 13:48:26,963 INFO L78 Accepts]: Start accepts. Automaton has 4797 states and 16480 transitions. Word has length 8 [2020-10-09 13:48:26,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:48:26,963 INFO L481 AbstractCegarLoop]: Abstraction has 4797 states and 16480 transitions. [2020-10-09 13:48:26,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-09 13:48:26,964 INFO L276 IsEmpty]: Start isEmpty. Operand 4797 states and 16480 transitions. [2020-10-09 13:48:26,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-09 13:48:26,966 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:48:26,969 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:48:26,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-09 13:48:26,969 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:48:26,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:48:26,970 INFO L82 PathProgramCache]: Analyzing trace with hash 172994846, now seen corresponding path program 1 times [2020-10-09 13:48:26,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:48:26,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991960468] [2020-10-09 13:48:26,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:48:26,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:48:27,026 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-09 13:48:27,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991960468] [2020-10-09 13:48:27,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755323091] [2020-10-09 13:48:27,027 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 [2020-10-09 13:48:27,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:48:27,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-09 13:48:27,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:48:27,138 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-09 13:48:27,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:48:27,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-10-09 13:48:27,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643013069] [2020-10-09 13:48:27,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-09 13:48:27,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:48:27,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-09 13:48:27,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-10-09 13:48:27,140 INFO L87 Difference]: Start difference. First operand 4797 states and 16480 transitions. Second operand 6 states. [2020-10-09 13:48:27,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:48:27,193 INFO L93 Difference]: Finished difference Result 4793 states and 16469 transitions. [2020-10-09 13:48:27,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-09 13:48:27,193 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-09 13:48:27,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:48:27,310 INFO L225 Difference]: With dead ends: 4793 [2020-10-09 13:48:27,310 INFO L226 Difference]: Without dead ends: 4793 [2020-10-09 13:48:27,311 INFO L673 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 [2020-10-09 13:48:27,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4793 states. [2020-10-09 13:48:27,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4793 to 4793. [2020-10-09 13:48:27,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4793 states. [2020-10-09 13:48:27,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4793 states to 4793 states and 16469 transitions. [2020-10-09 13:48:27,468 INFO L78 Accepts]: Start accepts. Automaton has 4793 states and 16469 transitions. Word has length 16 [2020-10-09 13:48:27,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:48:27,469 INFO L481 AbstractCegarLoop]: Abstraction has 4793 states and 16469 transitions. [2020-10-09 13:48:27,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-09 13:48:27,469 INFO L276 IsEmpty]: Start isEmpty. Operand 4793 states and 16469 transitions. [2020-10-09 13:48:27,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-09 13:48:27,471 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:48:27,471 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2020-10-09 13:48:27,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-10-09 13:48:27,686 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:48:27,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:48:27,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1534304145, now seen corresponding path program 1 times [2020-10-09 13:48:27,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:48:27,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900135151] [2020-10-09 13:48:27,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:48:27,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-09 13:48:27,700 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-09 13:48:27,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-09 13:48:27,711 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-09 13:48:27,719 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-09 13:48:27,719 INFO L519 BasicCegarLoop]: Counterexample might be feasible [2020-10-09 13:48:27,719 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-09 13:48:27,719 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-09 13:48:27,720 WARN L371 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-09 13:48:27,720 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-10-09 13:48:27,730 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:27,730 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:27,730 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:27,731 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:27,731 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:27,731 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:27,731 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:27,731 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:27,731 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:27,732 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:27,732 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:27,732 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:27,732 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:27,732 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:27,733 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:27,733 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:27,733 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:27,733 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:27,734 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:27,734 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:27,734 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:27,735 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:27,735 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:27,735 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:27,736 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:27,736 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:27,736 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:27,736 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:27,736 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:27,736 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:27,737 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:27,737 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:27,737 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:27,737 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:27,737 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:27,737 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:27,738 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:27,738 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:27,738 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:27,738 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:27,739 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:27,739 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:27,740 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:27,740 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:27,740 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:27,741 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:27,741 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:27,741 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:27,741 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:27,741 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:27,742 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:27,742 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:27,742 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:27,742 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:27,742 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:27,743 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:27,743 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:27,744 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:27,744 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:27,744 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:27,748 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-09 13:48:27,748 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-09 13:48:27,748 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-09 13:48:27,748 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-09 13:48:27,748 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-09 13:48:27,748 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-09 13:48:27,748 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-09 13:48:27,748 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-09 13:48:27,748 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-09 13:48:27,749 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-09 13:48:27,750 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 99 transitions, 258 flow [2020-10-09 13:48:27,750 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 99 places, 99 transitions, 258 flow [2020-10-09 13:48:27,750 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 99 places, 99 transitions, 258 flow [2020-10-09 13:48:27,894 INFO L129 PetriNetUnfolder]: 189/1172 cut-off events. [2020-10-09 13:48:27,894 INFO L130 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2020-10-09 13:48:27,901 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. [2020-10-09 13:48:27,934 INFO L117 LiptonReduction]: Number of co-enabled transitions 2850 [2020-10-09 13:48:29,296 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-09 13:48:29,700 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2020-10-09 13:48:29,780 INFO L132 LiptonReduction]: Checked pairs total: 9531 [2020-10-09 13:48:29,780 INFO L134 LiptonReduction]: Total number of compositions: 75 [2020-10-09 13:48:29,780 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 43 places, 38 transitions, 136 flow [2020-10-09 13:48:31,856 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 26310 states. [2020-10-09 13:48:31,856 INFO L276 IsEmpty]: Start isEmpty. Operand 26310 states. [2020-10-09 13:48:31,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-09 13:48:31,856 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:48:31,856 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-09 13:48:31,856 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:48:31,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:48:31,857 INFO L82 PathProgramCache]: Analyzing trace with hash 29336307, now seen corresponding path program 1 times [2020-10-09 13:48:31,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:48:31,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916317250] [2020-10-09 13:48:31,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:48:31,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:48:31,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 13:48:31,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916317250] [2020-10-09 13:48:31,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:48:31,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-09 13:48:31,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141245997] [2020-10-09 13:48:31,878 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-09 13:48:31,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:48:31,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-09 13:48:31,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-09 13:48:31,879 INFO L87 Difference]: Start difference. First operand 26310 states. Second operand 3 states. [2020-10-09 13:48:32,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:48:32,248 INFO L93 Difference]: Finished difference Result 26310 states and 110676 transitions. [2020-10-09 13:48:32,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-09 13:48:32,249 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-09 13:48:32,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:48:32,391 INFO L225 Difference]: With dead ends: 26310 [2020-10-09 13:48:32,391 INFO L226 Difference]: Without dead ends: 23184 [2020-10-09 13:48:32,392 INFO L673 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 [2020-10-09 13:48:32,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23184 states. [2020-10-09 13:48:33,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23184 to 23184. [2020-10-09 13:48:33,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23184 states. [2020-10-09 13:48:34,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23184 states to 23184 states and 98175 transitions. [2020-10-09 13:48:34,721 INFO L78 Accepts]: Start accepts. Automaton has 23184 states and 98175 transitions. Word has length 4 [2020-10-09 13:48:34,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:48:34,722 INFO L481 AbstractCegarLoop]: Abstraction has 23184 states and 98175 transitions. [2020-10-09 13:48:34,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-09 13:48:34,722 INFO L276 IsEmpty]: Start isEmpty. Operand 23184 states and 98175 transitions. [2020-10-09 13:48:34,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-09 13:48:34,722 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:48:34,722 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:48:34,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-09 13:48:34,722 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:48:34,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:48:34,723 INFO L82 PathProgramCache]: Analyzing trace with hash 805936127, now seen corresponding path program 1 times [2020-10-09 13:48:34,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:48:34,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086702198] [2020-10-09 13:48:34,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:48:34,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:48:34,754 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-09 13:48:34,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086702198] [2020-10-09 13:48:34,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:48:34,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-09 13:48:34,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218305182] [2020-10-09 13:48:34,755 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-09 13:48:34,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:48:34,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-09 13:48:34,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-09 13:48:34,756 INFO L87 Difference]: Start difference. First operand 23184 states and 98175 transitions. Second operand 4 states. [2020-10-09 13:48:34,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:48:34,957 INFO L93 Difference]: Finished difference Result 24543 states and 99524 transitions. [2020-10-09 13:48:34,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-09 13:48:34,958 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-09 13:48:34,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:48:35,045 INFO L225 Difference]: With dead ends: 24543 [2020-10-09 13:48:35,045 INFO L226 Difference]: Without dead ends: 24543 [2020-10-09 13:48:35,046 INFO L673 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 [2020-10-09 13:48:35,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24543 states. [2020-10-09 13:48:35,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24543 to 23577. [2020-10-09 13:48:35,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23577 states. [2020-10-09 13:48:36,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23577 states to 23577 states and 96338 transitions. [2020-10-09 13:48:36,166 INFO L78 Accepts]: Start accepts. Automaton has 23577 states and 96338 transitions. Word has length 8 [2020-10-09 13:48:36,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:48:36,166 INFO L481 AbstractCegarLoop]: Abstraction has 23577 states and 96338 transitions. [2020-10-09 13:48:36,166 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-09 13:48:36,166 INFO L276 IsEmpty]: Start isEmpty. Operand 23577 states and 96338 transitions. [2020-10-09 13:48:36,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-09 13:48:36,167 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:48:36,167 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:48:36,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-09 13:48:36,167 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:48:36,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:48:36,168 INFO L82 PathProgramCache]: Analyzing trace with hash -447719219, now seen corresponding path program 1 times [2020-10-09 13:48:36,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:48:36,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547332090] [2020-10-09 13:48:36,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:48:36,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:48:36,217 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-09 13:48:36,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547332090] [2020-10-09 13:48:36,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522645847] [2020-10-09 13:48:36,218 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 [2020-10-09 13:48:36,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:48:36,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-09 13:48:36,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:48:36,349 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-09 13:48:36,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:48:36,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2020-10-09 13:48:36,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739323032] [2020-10-09 13:48:36,351 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-09 13:48:36,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:48:36,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-09 13:48:36,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-09 13:48:36,351 INFO L87 Difference]: Start difference. First operand 23577 states and 96338 transitions. Second operand 7 states. [2020-10-09 13:48:36,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:48:36,506 INFO L93 Difference]: Finished difference Result 22356 states and 87745 transitions. [2020-10-09 13:48:36,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-09 13:48:36,506 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-10-09 13:48:36,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:48:36,565 INFO L225 Difference]: With dead ends: 22356 [2020-10-09 13:48:36,565 INFO L226 Difference]: Without dead ends: 22356 [2020-10-09 13:48:36,566 INFO L673 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 [2020-10-09 13:48:36,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22356 states. [2020-10-09 13:48:38,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22356 to 21826. [2020-10-09 13:48:38,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21826 states. [2020-10-09 13:48:39,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21826 states to 21826 states and 86349 transitions. [2020-10-09 13:48:39,015 INFO L78 Accepts]: Start accepts. Automaton has 21826 states and 86349 transitions. Word has length 16 [2020-10-09 13:48:39,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:48:39,015 INFO L481 AbstractCegarLoop]: Abstraction has 21826 states and 86349 transitions. [2020-10-09 13:48:39,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-09 13:48:39,015 INFO L276 IsEmpty]: Start isEmpty. Operand 21826 states and 86349 transitions. [2020-10-09 13:48:39,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-09 13:48:39,022 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:48:39,022 INFO L421 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:48:39,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-10-09 13:48:39,237 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:48:39,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:48:39,238 INFO L82 PathProgramCache]: Analyzing trace with hash -1012463302, now seen corresponding path program 1 times [2020-10-09 13:48:39,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:48:39,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123120355] [2020-10-09 13:48:39,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:48:39,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-09 13:48:39,250 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-09 13:48:39,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-09 13:48:39,260 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-09 13:48:39,268 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-09 13:48:39,268 INFO L519 BasicCegarLoop]: Counterexample might be feasible [2020-10-09 13:48:39,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-09 13:48:39,269 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-09 13:48:39,269 WARN L371 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-09 13:48:39,270 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2020-10-09 13:48:39,281 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:39,281 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:39,282 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:39,282 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:39,282 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:39,282 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:39,282 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:39,282 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:39,282 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:39,283 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:39,283 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:39,283 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:39,283 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:39,283 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:39,283 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:39,283 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:39,284 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:39,284 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:39,284 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:39,284 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:39,284 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:39,284 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:39,284 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:39,285 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:39,285 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:39,285 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:39,285 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:39,285 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:39,285 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:39,285 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:39,286 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:39,286 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:39,286 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:39,286 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:39,286 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:39,286 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:39,286 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:39,287 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:39,287 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:39,287 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:39,287 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:39,287 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:39,287 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:39,288 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:39,288 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:39,288 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:39,288 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:39,289 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:39,289 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:39,289 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:39,290 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:39,290 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:39,291 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:39,291 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:39,291 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:39,291 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:39,291 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:39,292 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:39,293 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:39,293 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:39,293 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:39,293 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:39,294 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:39,295 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:39,295 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:39,295 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:39,295 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:39,296 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:39,296 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:39,296 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:39,297 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:39,297 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:48:39,301 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-09 13:48:39,302 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-09 13:48:39,302 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-09 13:48:39,302 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-09 13:48:39,302 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-09 13:48:39,302 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-09 13:48:39,302 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-09 13:48:39,302 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-09 13:48:39,302 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-09 13:48:39,304 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-09 13:48:39,304 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 107 places, 106 transitions, 290 flow [2020-10-09 13:48:39,304 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 107 places, 106 transitions, 290 flow [2020-10-09 13:48:39,304 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 107 places, 106 transitions, 290 flow [2020-10-09 13:48:39,556 INFO L129 PetriNetUnfolder]: 399/2291 cut-off events. [2020-10-09 13:48:39,556 INFO L130 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2020-10-09 13:48:39,570 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. [2020-10-09 13:48:39,614 INFO L117 LiptonReduction]: Number of co-enabled transitions 3660 [2020-10-09 13:48:41,302 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-10-09 13:48:41,409 INFO L132 LiptonReduction]: Checked pairs total: 14446 [2020-10-09 13:48:41,409 INFO L134 LiptonReduction]: Total number of compositions: 76 [2020-10-09 13:48:41,409 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 49 places, 43 transitions, 164 flow [2020-10-09 13:49:13,568 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 127122 states. [2020-10-09 13:49:13,568 INFO L276 IsEmpty]: Start isEmpty. Operand 127122 states. [2020-10-09 13:49:13,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-09 13:49:13,568 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:49:13,569 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-09 13:49:13,569 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:49:13,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:49:13,569 INFO L82 PathProgramCache]: Analyzing trace with hash 35155697, now seen corresponding path program 1 times [2020-10-09 13:49:13,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:49:13,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655503070] [2020-10-09 13:49:13,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:49:13,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:49:13,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 13:49:13,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655503070] [2020-10-09 13:49:13,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:49:13,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-09 13:49:13,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187597231] [2020-10-09 13:49:13,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-09 13:49:13,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:49:13,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-09 13:49:13,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-09 13:49:13,592 INFO L87 Difference]: Start difference. First operand 127122 states. Second operand 3 states. [2020-10-09 13:49:14,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:49:14,238 INFO L93 Difference]: Finished difference Result 127122 states and 615398 transitions. [2020-10-09 13:49:14,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-09 13:49:14,239 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-09 13:49:14,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:49:14,638 INFO L225 Difference]: With dead ends: 127122 [2020-10-09 13:49:14,638 INFO L226 Difference]: Without dead ends: 111496 [2020-10-09 13:49:14,638 INFO L673 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 [2020-10-09 13:49:21,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111496 states. [2020-10-09 13:49:23,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111496 to 111496. [2020-10-09 13:49:23,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111496 states. [2020-10-09 13:49:24,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111496 states to 111496 states and 543522 transitions. [2020-10-09 13:49:24,372 INFO L78 Accepts]: Start accepts. Automaton has 111496 states and 543522 transitions. Word has length 4 [2020-10-09 13:49:24,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:49:24,372 INFO L481 AbstractCegarLoop]: Abstraction has 111496 states and 543522 transitions. [2020-10-09 13:49:24,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-09 13:49:24,372 INFO L276 IsEmpty]: Start isEmpty. Operand 111496 states and 543522 transitions. [2020-10-09 13:49:24,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-09 13:49:24,372 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:49:24,372 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:49:24,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-09 13:49:24,373 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:49:24,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:49:24,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1170285684, now seen corresponding path program 1 times [2020-10-09 13:49:24,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:49:24,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614294611] [2020-10-09 13:49:24,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:49:24,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:49:24,408 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-09 13:49:24,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614294611] [2020-10-09 13:49:24,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:49:24,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-09 13:49:24,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955089035] [2020-10-09 13:49:24,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-09 13:49:24,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:49:24,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-09 13:49:24,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-09 13:49:24,410 INFO L87 Difference]: Start difference. First operand 111496 states and 543522 transitions. Second operand 4 states. [2020-10-09 13:49:31,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:49:31,501 INFO L93 Difference]: Finished difference Result 120747 states and 568406 transitions. [2020-10-09 13:49:31,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-09 13:49:31,502 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-09 13:49:31,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:49:31,907 INFO L225 Difference]: With dead ends: 120747 [2020-10-09 13:49:31,907 INFO L226 Difference]: Without dead ends: 120747 [2020-10-09 13:49:31,908 INFO L673 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 [2020-10-09 13:49:34,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120747 states. [2020-10-09 13:49:37,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120747 to 116197. [2020-10-09 13:49:37,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116197 states. [2020-10-09 13:49:37,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116197 states to 116197 states and 549860 transitions. [2020-10-09 13:49:37,458 INFO L78 Accepts]: Start accepts. Automaton has 116197 states and 549860 transitions. Word has length 8 [2020-10-09 13:49:37,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:49:37,458 INFO L481 AbstractCegarLoop]: Abstraction has 116197 states and 549860 transitions. [2020-10-09 13:49:37,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-09 13:49:37,458 INFO L276 IsEmpty]: Start isEmpty. Operand 116197 states and 549860 transitions. [2020-10-09 13:49:37,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-09 13:49:37,459 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:49:37,459 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:49:37,459 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-09 13:49:37,459 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:49:37,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:49:37,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1082449829, now seen corresponding path program 1 times [2020-10-09 13:49:37,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:49:37,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613725587] [2020-10-09 13:49:37,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:49:37,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:49:37,491 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-09 13:49:37,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613725587] [2020-10-09 13:49:37,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541173551] [2020-10-09 13:49:37,492 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 [2020-10-09 13:49:37,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:49:37,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-09 13:49:37,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:49:37,590 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-09 13:49:37,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:49:37,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-10-09 13:49:37,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768817327] [2020-10-09 13:49:37,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-09 13:49:37,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:49:37,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-09 13:49:37,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-09 13:49:37,592 INFO L87 Difference]: Start difference. First operand 116197 states and 549860 transitions. Second operand 6 states. [2020-10-09 13:49:38,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:49:38,210 INFO L93 Difference]: Finished difference Result 116193 states and 549849 transitions. [2020-10-09 13:49:38,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-09 13:49:38,211 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-09 13:49:38,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:49:44,531 INFO L225 Difference]: With dead ends: 116193 [2020-10-09 13:49:44,531 INFO L226 Difference]: Without dead ends: 116193 [2020-10-09 13:49:44,531 INFO L673 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 [2020-10-09 13:49:46,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116193 states. [2020-10-09 13:49:48,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116193 to 116193. [2020-10-09 13:49:48,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116193 states. [2020-10-09 13:49:49,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116193 states to 116193 states and 549849 transitions. [2020-10-09 13:49:49,608 INFO L78 Accepts]: Start accepts. Automaton has 116193 states and 549849 transitions. Word has length 16 [2020-10-09 13:49:49,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:49:49,609 INFO L481 AbstractCegarLoop]: Abstraction has 116193 states and 549849 transitions. [2020-10-09 13:49:49,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-09 13:49:49,609 INFO L276 IsEmpty]: Start isEmpty. Operand 116193 states and 549849 transitions. [2020-10-09 13:49:49,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-09 13:49:49,610 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:49:49,611 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:49:49,811 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 13:49:49,812 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:49:49,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:49:49,812 INFO L82 PathProgramCache]: Analyzing trace with hash 173719339, now seen corresponding path program 1 times [2020-10-09 13:49:49,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:49:49,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459442191] [2020-10-09 13:49:49,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:49:49,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:49:49,857 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-09 13:49:49,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459442191] [2020-10-09 13:49:49,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471062294] [2020-10-09 13:49:49,858 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 [2020-10-09 13:49:49,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:49:49,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-09 13:49:49,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:49:49,965 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-09 13:49:49,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:49:49,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-10-09 13:49:49,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355754084] [2020-10-09 13:49:49,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-09 13:49:49,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:49:49,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-09 13:49:49,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2020-10-09 13:49:49,971 INFO L87 Difference]: Start difference. First operand 116193 states and 549849 transitions. Second operand 8 states. [2020-10-09 13:49:50,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:49:50,608 INFO L93 Difference]: Finished difference Result 116177 states and 549793 transitions. [2020-10-09 13:49:50,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-09 13:49:50,608 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-10-09 13:49:50,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:49:50,965 INFO L225 Difference]: With dead ends: 116177 [2020-10-09 13:49:50,965 INFO L226 Difference]: Without dead ends: 116177 [2020-10-09 13:49:50,965 INFO L673 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 [2020-10-09 13:49:59,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116177 states. [2020-10-09 13:50:00,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116177 to 116177. [2020-10-09 13:50:00,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116177 states. [2020-10-09 13:50:01,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116177 states to 116177 states and 549793 transitions. [2020-10-09 13:50:01,363 INFO L78 Accepts]: Start accepts. Automaton has 116177 states and 549793 transitions. Word has length 20 [2020-10-09 13:50:01,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:50:01,363 INFO L481 AbstractCegarLoop]: Abstraction has 116177 states and 549793 transitions. [2020-10-09 13:50:01,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-09 13:50:01,363 INFO L276 IsEmpty]: Start isEmpty. Operand 116177 states and 549793 transitions. [2020-10-09 13:50:01,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-09 13:50:01,368 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:50:01,369 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:50:01,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 13:50:01,583 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:50:01,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:50:01,583 INFO L82 PathProgramCache]: Analyzing trace with hash -999416206, now seen corresponding path program 1 times [2020-10-09 13:50:01,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:50:01,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242214698] [2020-10-09 13:50:01,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:50:01,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:50:01,633 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-09 13:50:01,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242214698] [2020-10-09 13:50:01,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246434847] [2020-10-09 13:50:01,634 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 [2020-10-09 13:50:01,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:50:01,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-09 13:50:01,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:50:01,770 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-09 13:50:01,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:50:01,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-09 13:50:01,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165129670] [2020-10-09 13:50:01,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-09 13:50:01,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:50:01,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-09 13:50:01,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=48, Unknown=0, NotChecked=0, Total=90 [2020-10-09 13:50:01,773 INFO L87 Difference]: Start difference. First operand 116177 states and 549793 transitions. Second operand 10 states. [2020-10-09 13:50:02,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:50:02,536 INFO L93 Difference]: Finished difference Result 116113 states and 549521 transitions. [2020-10-09 13:50:02,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-09 13:50:02,537 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2020-10-09 13:50:02,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:50:02,904 INFO L225 Difference]: With dead ends: 116113 [2020-10-09 13:50:02,905 INFO L226 Difference]: Without dead ends: 116113 [2020-10-09 13:50:02,905 INFO L673 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 [2020-10-09 13:50:06,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116113 states. [2020-10-09 13:50:14,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116113 to 116113. [2020-10-09 13:50:14,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116113 states. [2020-10-09 13:50:14,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116113 states to 116113 states and 549521 transitions. [2020-10-09 13:50:14,602 INFO L78 Accepts]: Start accepts. Automaton has 116113 states and 549521 transitions. Word has length 24 [2020-10-09 13:50:14,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:50:14,602 INFO L481 AbstractCegarLoop]: Abstraction has 116113 states and 549521 transitions. [2020-10-09 13:50:14,602 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-09 13:50:14,602 INFO L276 IsEmpty]: Start isEmpty. Operand 116113 states and 549521 transitions. [2020-10-09 13:50:14,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-09 13:50:14,620 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:50:14,620 INFO L421 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:50:14,834 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-10-09 13:50:14,835 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:50:14,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:50:14,835 INFO L82 PathProgramCache]: Analyzing trace with hash 1963695170, now seen corresponding path program 1 times [2020-10-09 13:50:14,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:50:14,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565672586] [2020-10-09 13:50:14,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:50:14,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-09 13:50:14,848 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-09 13:50:14,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-09 13:50:14,858 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-09 13:50:14,865 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-09 13:50:14,865 INFO L519 BasicCegarLoop]: Counterexample might be feasible [2020-10-09 13:50:14,866 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-09 13:50:14,866 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-09 13:50:14,866 WARN L371 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-09 13:50:14,867 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2020-10-09 13:50:14,876 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,876 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,876 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,876 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,876 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,876 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,877 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,877 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,877 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,877 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,877 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,877 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,878 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,878 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,878 WARN L313 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,878 WARN L313 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,878 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,878 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,878 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,879 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,879 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,879 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,879 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,879 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,879 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,879 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,880 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,880 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,880 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,880 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,880 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,880 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,880 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,881 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,881 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,881 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,881 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,881 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,881 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,881 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,882 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,882 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,882 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,882 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,882 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,882 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,883 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,883 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,883 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,883 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,883 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,884 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,884 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,884 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,885 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,885 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,885 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,886 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,886 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,887 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,887 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,887 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,887 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,887 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,888 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,888 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,889 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,889 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,889 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,890 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,890 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,890 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,890 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,890 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,891 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,892 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,892 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,892 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,892 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,893 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,893 WARN L313 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,893 WARN L313 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,893 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,894 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:14,898 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-09 13:50:14,899 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-09 13:50:14,899 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-09 13:50:14,899 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-09 13:50:14,899 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-09 13:50:14,899 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-09 13:50:14,899 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-09 13:50:14,899 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-09 13:50:14,899 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-09 13:50:14,901 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-09 13:50:14,901 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 115 places, 113 transitions, 324 flow [2020-10-09 13:50:14,901 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 115 places, 113 transitions, 324 flow [2020-10-09 13:50:14,901 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 115 places, 113 transitions, 324 flow [2020-10-09 13:50:15,373 INFO L129 PetriNetUnfolder]: 849/4546 cut-off events. [2020-10-09 13:50:15,373 INFO L130 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2020-10-09 13:50:15,390 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. [2020-10-09 13:50:15,478 INFO L117 LiptonReduction]: Number of co-enabled transitions 4550 [2020-10-09 13:50:17,362 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-10-09 13:50:17,447 INFO L132 LiptonReduction]: Checked pairs total: 19547 [2020-10-09 13:50:17,447 INFO L134 LiptonReduction]: Total number of compositions: 80 [2020-10-09 13:50:17,447 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 55 places, 48 transitions, 194 flow [2020-10-09 14:01:18,987 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 617870 states. [2020-10-09 14:01:18,988 INFO L276 IsEmpty]: Start isEmpty. Operand 617870 states. [2020-10-09 14:01:18,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-09 14:01:18,988 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 14:01:18,988 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-09 14:01:18,988 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 14:01:18,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:01:18,989 INFO L82 PathProgramCache]: Analyzing trace with hash 41370148, now seen corresponding path program 1 times [2020-10-09 14:01:18,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 14:01:18,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780969811] [2020-10-09 14:01:18,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 14:01:18,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:01:19,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:01:19,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780969811] [2020-10-09 14:01:19,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 14:01:19,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-09 14:01:19,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438974868] [2020-10-09 14:01:19,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-09 14:01:19,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 14:01:19,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-09 14:01:19,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-09 14:01:19,005 INFO L87 Difference]: Start difference. First operand 617870 states. Second operand 3 states. Received shutdown request... [2020-10-09 14:01:40,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-09 14:01:40,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-09 14:01:40,757 WARN L546 AbstractCegarLoop]: Verification canceled [2020-10-09 14:01:40,760 WARN L235 ceAbstractionStarter]: Timeout [2020-10-09 14:01:40,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.10 02:01:40 BasicIcfg [2020-10-09 14:01:40,760 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-09 14:01:40,762 INFO L168 Benchmark]: Toolchain (without parser) took 804435.97 ms. Allocated memory was 251.7 MB in the beginning and 7.4 GB in the end (delta: 7.1 GB). Free memory was 206.7 MB in the beginning and 3.9 GB in the end (delta: -3.7 GB). Peak memory consumption was 6.1 GB. Max. memory is 14.2 GB. [2020-10-09 14:01:40,762 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 251.7 MB. Free memory is still 228.0 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-09 14:01:40,763 INFO L168 Benchmark]: CACSL2BoogieTranslator took 686.72 ms. Allocated memory was 251.7 MB in the beginning and 312.0 MB in the end (delta: 60.3 MB). Free memory was 206.7 MB in the beginning and 267.4 MB in the end (delta: -60.6 MB). Peak memory consumption was 32.9 MB. Max. memory is 14.2 GB. [2020-10-09 14:01:40,763 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.64 ms. Allocated memory is still 312.0 MB. Free memory was 267.4 MB in the beginning and 264.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-09 14:01:40,763 INFO L168 Benchmark]: Boogie Preprocessor took 30.90 ms. Allocated memory is still 312.0 MB. Free memory is still 264.8 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-09 14:01:40,764 INFO L168 Benchmark]: RCFGBuilder took 434.40 ms. Allocated memory is still 312.0 MB. Free memory was 264.8 MB in the beginning and 240.5 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 14.2 GB. [2020-10-09 14:01:40,765 INFO L168 Benchmark]: TraceAbstraction took 803228.48 ms. Allocated memory was 312.0 MB in the beginning and 7.4 GB in the end (delta: 7.1 GB). Free memory was 240.5 MB in the beginning and 3.9 GB in the end (delta: -3.7 GB). Peak memory consumption was 6.1 GB. Max. memory is 14.2 GB. [2020-10-09 14:01:40,767 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 251.7 MB. Free memory is still 228.0 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 686.72 ms. Allocated memory was 251.7 MB in the beginning and 312.0 MB in the end (delta: 60.3 MB). Free memory was 206.7 MB in the beginning and 267.4 MB in the end (delta: -60.6 MB). Peak memory consumption was 32.9 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 50.64 ms. Allocated memory is still 312.0 MB. Free memory was 267.4 MB in the beginning and 264.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 30.90 ms. Allocated memory is still 312.0 MB. Free memory is still 264.8 MB. There was no memory consumed. Max. memory is 14.2 GB. * RCFGBuilder took 434.40 ms. Allocated memory is still 312.0 MB. Free memory was 264.8 MB in the beginning and 240.5 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 14.2 GB. * TraceAbstraction took 803228.48 ms. Allocated memory was 312.0 MB in the beginning and 7.4 GB in the end (delta: 7.1 GB). Free memory was 240.5 MB in the beginning and 3.9 GB in the end (delta: -3.7 GB). Peak memory consumption was 6.1 GB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 263 VarBasedMoverChecksPositive, 11 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 11 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 7 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.9s, 67 PlacesBefore, 15 PlacesAfterwards, 71 TransitionsBefore, 14 TransitionsAfterwards, 370 CoEnabledTransitionPairs, 6 FixpointIterations, 24 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 8 ConcurrentYvCompositions, 5 ChoiceCompositions, 71 TotalNumberOfCompositions, 397 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 689 VarBasedMoverChecksPositive, 27 VarBasedMoverChecksNegative, 2 SemBasedMoverChecksPositive, 25 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 127 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.8s, 75 PlacesBefore, 25 PlacesAfterwards, 78 TransitionsBefore, 23 TransitionsAfterwards, 900 CoEnabledTransitionPairs, 6 FixpointIterations, 23 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 10 ConcurrentYvCompositions, 5 ChoiceCompositions, 67 TotalNumberOfCompositions, 2415 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1100 VarBasedMoverChecksPositive, 37 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 37 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 181 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.4s, 83 PlacesBefore, 31 PlacesAfterwards, 85 TransitionsBefore, 28 TransitionsAfterwards, 1470 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 10 ConcurrentYvCompositions, 5 ChoiceCompositions, 73 TotalNumberOfCompositions, 4432 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1301 VarBasedMoverChecksPositive, 53 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 41 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 230 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.6s, 91 PlacesBefore, 37 PlacesAfterwards, 92 TransitionsBefore, 33 TransitionsAfterwards, 2120 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 30 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 12 ConcurrentYvCompositions, 5 ChoiceCompositions, 73 TotalNumberOfCompositions, 7163 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 2175 VarBasedMoverChecksPositive, 80 VarBasedMoverChecksNegative, 20 SemBasedMoverChecksPositive, 60 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 524 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.0s, 99 PlacesBefore, 43 PlacesAfterwards, 99 TransitionsBefore, 38 TransitionsAfterwards, 2850 CoEnabledTransitionPairs, 5 FixpointIterations, 23 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 10 ConcurrentYvCompositions, 5 ChoiceCompositions, 75 TotalNumberOfCompositions, 9531 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 2178 VarBasedMoverChecksPositive, 70 VarBasedMoverChecksNegative, 10 SemBasedMoverChecksPositive, 60 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 420 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.1s, 107 PlacesBefore, 49 PlacesAfterwards, 106 TransitionsBefore, 43 TransitionsAfterwards, 3660 CoEnabledTransitionPairs, 6 FixpointIterations, 21 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 9 ConcurrentYvCompositions, 5 ChoiceCompositions, 76 TotalNumberOfCompositions, 14446 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 3622 VarBasedMoverChecksPositive, 131 VarBasedMoverChecksNegative, 42 SemBasedMoverChecksPositive, 89 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.5s, 977 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.5s, 115 PlacesBefore, 55 PlacesAfterwards, 113 TransitionsBefore, 48 TransitionsAfterwards, 4550 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 8 ConcurrentYvCompositions, 5 ChoiceCompositions, 80 TotalNumberOfCompositions, 19547 MoverChecksTotal - TimeoutResultAtElement [Line: 678]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 678). Cancelled while BasicCegarLoop was constructing difference of abstraction (617870states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (535379 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 64 locations, 1 error locations. Started 7 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 802.9s, OverallIterations: 23, TraceHistogramMax: 7, AutomataDifference: 41.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 709.8s, HoareTripleCheckerStatistics: 588 SDtfs, 606 SDslu, 700 SDs, 0 SdLazy, 281 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 134 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=617870occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 49.1s AutomataMinimizationTime, 16 MinimizatonAttempts, 6288 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 353 NumberOfCodeBlocks, 353 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 230 ConstructedInterpolants, 0 QuantifiedInterpolants, 14284 SizeOfPredicates, 5 NumberOfNonLiveVariables, 478 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 22 InterpolantComputations, 12 PerfectInterpolantSequences, 25/73 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown