./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2b8fef41c3119c5f4fc9586ebd31a4ff7152be41d9f2f8da139e8cd34cf0da86 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 22:08:13,293 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 22:08:13,295 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 22:08:13,319 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 22:08:13,320 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 22:08:13,321 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 22:08:13,322 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 22:08:13,323 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 22:08:13,325 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 22:08:13,325 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 22:08:13,326 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 22:08:13,327 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 22:08:13,328 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 22:08:13,328 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 22:08:13,329 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 22:08:13,330 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 22:08:13,331 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 22:08:13,331 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 22:08:13,333 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 22:08:13,334 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 22:08:13,335 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 22:08:13,336 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 22:08:13,337 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 22:08:13,338 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 22:08:13,338 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 22:08:13,341 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 22:08:13,341 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 22:08:13,341 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 22:08:13,342 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 22:08:13,342 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 22:08:13,343 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 22:08:13,343 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 22:08:13,344 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 22:08:13,345 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 22:08:13,345 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 22:08:13,346 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 22:08:13,346 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 22:08:13,347 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 22:08:13,347 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 22:08:13,347 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 22:08:13,348 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 22:08:13,349 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 22:08:13,350 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 22:08:13,370 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 22:08:13,370 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 22:08:13,371 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 22:08:13,371 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 22:08:13,371 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 22:08:13,372 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 22:08:13,372 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 22:08:13,372 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 22:08:13,372 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 22:08:13,373 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 22:08:13,373 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 22:08:13,373 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 22:08:13,373 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 22:08:13,373 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 22:08:13,374 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 22:08:13,374 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 22:08:13,374 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 22:08:13,374 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 22:08:13,374 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 22:08:13,375 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 22:08:13,375 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 22:08:13,375 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 22:08:13,375 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 22:08:13,375 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 22:08:13,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:08:13,376 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 22:08:13,376 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 22:08:13,376 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 22:08:13,376 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 22:08:13,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 22:08:13,377 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 22:08:13,377 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 22:08:13,377 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 22:08:13,377 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b8fef41c3119c5f4fc9586ebd31a4ff7152be41d9f2f8da139e8cd34cf0da86 [2022-07-13 22:08:13,593 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 22:08:13,627 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 22:08:13,629 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 22:08:13,630 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 22:08:13,630 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 22:08:13,631 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.wvr.c [2022-07-13 22:08:13,678 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3969ee0c7/c592e1fb50fa470286c36db21cc496cf/FLAGc420a4fe0 [2022-07-13 22:08:14,076 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 22:08:14,077 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.wvr.c [2022-07-13 22:08:14,083 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3969ee0c7/c592e1fb50fa470286c36db21cc496cf/FLAGc420a4fe0 [2022-07-13 22:08:14,113 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3969ee0c7/c592e1fb50fa470286c36db21cc496cf [2022-07-13 22:08:14,119 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 22:08:14,120 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 22:08:14,121 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 22:08:14,122 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 22:08:14,124 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 22:08:14,125 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:08:14" (1/1) ... [2022-07-13 22:08:14,125 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b1adc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:08:14, skipping insertion in model container [2022-07-13 22:08:14,126 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:08:14" (1/1) ... [2022-07-13 22:08:14,131 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 22:08:14,146 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 22:08:14,279 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.wvr.c[4372,4385] [2022-07-13 22:08:14,285 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:08:14,291 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 22:08:14,313 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.wvr.c[4372,4385] [2022-07-13 22:08:14,317 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:08:14,328 INFO L208 MainTranslator]: Completed translation [2022-07-13 22:08:14,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:08:14 WrapperNode [2022-07-13 22:08:14,329 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 22:08:14,330 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 22:08:14,330 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 22:08:14,331 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 22:08:14,346 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:08:14" (1/1) ... [2022-07-13 22:08:14,364 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:08:14" (1/1) ... [2022-07-13 22:08:14,389 INFO L137 Inliner]: procedures = 29, calls = 95, calls flagged for inlining = 21, calls inlined = 27, statements flattened = 289 [2022-07-13 22:08:14,390 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 22:08:14,391 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 22:08:14,391 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 22:08:14,391 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 22:08:14,399 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:08:14" (1/1) ... [2022-07-13 22:08:14,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:08:14" (1/1) ... [2022-07-13 22:08:14,419 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:08:14" (1/1) ... [2022-07-13 22:08:14,419 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:08:14" (1/1) ... [2022-07-13 22:08:14,425 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:08:14" (1/1) ... [2022-07-13 22:08:14,445 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:08:14" (1/1) ... [2022-07-13 22:08:14,447 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:08:14" (1/1) ... [2022-07-13 22:08:14,450 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 22:08:14,450 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 22:08:14,451 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 22:08:14,451 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 22:08:14,451 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:08:14" (1/1) ... [2022-07-13 22:08:14,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:08:14,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:08:14,498 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 22:08:14,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 22:08:14,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 22:08:14,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 22:08:14,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 22:08:14,545 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 22:08:14,545 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-13 22:08:14,545 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-13 22:08:14,545 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-13 22:08:14,545 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-13 22:08:14,546 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-13 22:08:14,549 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-13 22:08:14,549 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-07-13 22:08:14,549 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-07-13 22:08:14,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 22:08:14,550 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-07-13 22:08:14,550 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-07-13 22:08:14,550 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2022-07-13 22:08:14,550 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2022-07-13 22:08:14,550 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-13 22:08:14,550 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-13 22:08:14,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-13 22:08:14,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 22:08:14,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 22:08:14,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 22:08:14,554 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-13 22:08:14,685 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 22:08:14,686 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 22:08:15,124 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 22:08:15,279 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 22:08:15,280 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-07-13 22:08:15,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:08:15 BoogieIcfgContainer [2022-07-13 22:08:15,284 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 22:08:15,286 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 22:08:15,286 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 22:08:15,288 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 22:08:15,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 10:08:14" (1/3) ... [2022-07-13 22:08:15,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e196b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:08:15, skipping insertion in model container [2022-07-13 22:08:15,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:08:14" (2/3) ... [2022-07-13 22:08:15,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e196b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:08:15, skipping insertion in model container [2022-07-13 22:08:15,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:08:15" (3/3) ... [2022-07-13 22:08:15,291 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-1-dsl.wvr.c [2022-07-13 22:08:15,295 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-13 22:08:15,300 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 22:08:15,301 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 22:08:15,301 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-13 22:08:15,389 INFO L135 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2022-07-13 22:08:15,460 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 261 places, 260 transitions, 592 flow [2022-07-13 22:08:15,553 INFO L129 PetriNetUnfolder]: 18/232 cut-off events. [2022-07-13 22:08:15,554 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-07-13 22:08:15,564 INFO L84 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 232 events. 18/232 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 288 event pairs, 0 based on Foata normal form. 0/213 useless extension candidates. Maximal degree in co-relation 200. Up to 3 conditions per place. [2022-07-13 22:08:15,564 INFO L82 GeneralOperation]: Start removeDead. Operand has 261 places, 260 transitions, 592 flow [2022-07-13 22:08:15,585 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 224 places, 223 transitions, 494 flow [2022-07-13 22:08:15,599 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 22:08:15,605 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2d4dd150, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@35e8cf68 [2022-07-13 22:08:15,606 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-07-13 22:08:15,697 INFO L129 PetriNetUnfolder]: 18/222 cut-off events. [2022-07-13 22:08:15,698 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-07-13 22:08:15,698 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:08:15,698 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:08:15,699 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-07-13 22:08:15,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:08:15,703 INFO L85 PathProgramCache]: Analyzing trace with hash -124297982, now seen corresponding path program 1 times [2022-07-13 22:08:15,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:08:15,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727720703] [2022-07-13 22:08:15,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:08:15,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:08:15,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:08:15,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:08:15,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:08:15,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727720703] [2022-07-13 22:08:15,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727720703] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:08:15,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:08:15,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 22:08:15,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242189289] [2022-07-13 22:08:15,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:08:15,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 22:08:15,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:08:16,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 22:08:16,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 22:08:16,008 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 264 [2022-07-13 22:08:16,013 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 223 transitions, 494 flow. Second operand has 2 states, 2 states have (on average 227.0) internal successors, (454), 2 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:16,013 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:08:16,013 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 264 [2022-07-13 22:08:16,014 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:08:16,391 INFO L129 PetriNetUnfolder]: 1084/2340 cut-off events. [2022-07-13 22:08:16,392 INFO L130 PetriNetUnfolder]: For 684/684 co-relation queries the response was YES. [2022-07-13 22:08:16,399 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4457 conditions, 2340 events. 1084/2340 cut-off events. For 684/684 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 13056 event pairs, 627 based on Foata normal form. 309/2437 useless extension candidates. Maximal degree in co-relation 4157. Up to 1445 conditions per place. [2022-07-13 22:08:16,424 INFO L132 encePairwiseOnDemand]: 255/264 looper letters, 30 selfloop transitions, 0 changer transitions 4/214 dead transitions. [2022-07-13 22:08:16,424 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 214 transitions, 536 flow [2022-07-13 22:08:16,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 22:08:16,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-13 22:08:16,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 471 transitions. [2022-07-13 22:08:16,434 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8920454545454546 [2022-07-13 22:08:16,434 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 471 transitions. [2022-07-13 22:08:16,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 471 transitions. [2022-07-13 22:08:16,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:08:16,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 471 transitions. [2022-07-13 22:08:16,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 235.5) internal successors, (471), 2 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:16,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 264.0) internal successors, (792), 3 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:16,444 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 264.0) internal successors, (792), 3 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:16,445 INFO L186 Difference]: Start difference. First operand has 224 places, 223 transitions, 494 flow. Second operand 2 states and 471 transitions. [2022-07-13 22:08:16,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 214 transitions, 536 flow [2022-07-13 22:08:16,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 214 transitions, 504 flow, removed 0 selfloop flow, removed 12 redundant places. [2022-07-13 22:08:16,452 INFO L242 Difference]: Finished difference. Result has 213 places, 210 transitions, 436 flow [2022-07-13 22:08:16,453 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=436, PETRI_PLACES=213, PETRI_TRANSITIONS=210} [2022-07-13 22:08:16,455 INFO L279 CegarLoopForPetriNet]: 224 programPoint places, -11 predicate places. [2022-07-13 22:08:16,455 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 210 transitions, 436 flow [2022-07-13 22:08:16,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 227.0) internal successors, (454), 2 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:16,456 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:08:16,456 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:08:16,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 22:08:16,456 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-07-13 22:08:16,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:08:16,457 INFO L85 PathProgramCache]: Analyzing trace with hash 338119102, now seen corresponding path program 1 times [2022-07-13 22:08:16,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:08:16,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167104999] [2022-07-13 22:08:16,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:08:16,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:08:16,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:08:16,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:08:16,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:08:16,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167104999] [2022-07-13 22:08:16,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167104999] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:08:16,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:08:16,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 22:08:16,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277683405] [2022-07-13 22:08:16,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:08:16,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:08:16,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:08:16,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:08:16,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:08:16,668 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 264 [2022-07-13 22:08:16,669 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 210 transitions, 436 flow. Second operand has 6 states, 6 states have (on average 198.33333333333334) internal successors, (1190), 6 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:16,669 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:08:16,669 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 264 [2022-07-13 22:08:16,669 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:08:17,543 INFO L129 PetriNetUnfolder]: 3024/6500 cut-off events. [2022-07-13 22:08:17,543 INFO L130 PetriNetUnfolder]: For 486/486 co-relation queries the response was YES. [2022-07-13 22:08:17,558 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10958 conditions, 6500 events. 3024/6500 cut-off events. For 486/486 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 49241 event pairs, 737 based on Foata normal form. 1/5842 useless extension candidates. Maximal degree in co-relation 10955. Up to 1683 conditions per place. [2022-07-13 22:08:17,585 INFO L132 encePairwiseOnDemand]: 253/264 looper letters, 95 selfloop transitions, 10 changer transitions 4/269 dead transitions. [2022-07-13 22:08:17,585 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 269 transitions, 799 flow [2022-07-13 22:08:17,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:08:17,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-13 22:08:17,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1262 transitions. [2022-07-13 22:08:17,590 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7967171717171717 [2022-07-13 22:08:17,590 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1262 transitions. [2022-07-13 22:08:17,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1262 transitions. [2022-07-13 22:08:17,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:08:17,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1262 transitions. [2022-07-13 22:08:17,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 210.33333333333334) internal successors, (1262), 6 states have internal predecessors, (1262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:17,596 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 264.0) internal successors, (1848), 7 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:17,597 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 264.0) internal successors, (1848), 7 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:17,597 INFO L186 Difference]: Start difference. First operand has 213 places, 210 transitions, 436 flow. Second operand 6 states and 1262 transitions. [2022-07-13 22:08:17,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 269 transitions, 799 flow [2022-07-13 22:08:17,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 269 transitions, 799 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-13 22:08:17,606 INFO L242 Difference]: Finished difference. Result has 218 places, 217 transitions, 499 flow [2022-07-13 22:08:17,606 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=499, PETRI_PLACES=218, PETRI_TRANSITIONS=217} [2022-07-13 22:08:17,606 INFO L279 CegarLoopForPetriNet]: 224 programPoint places, -6 predicate places. [2022-07-13 22:08:17,607 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 217 transitions, 499 flow [2022-07-13 22:08:17,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 198.33333333333334) internal successors, (1190), 6 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:17,608 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:08:17,608 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:08:17,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 22:08:17,608 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-07-13 22:08:17,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:08:17,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1295048629, now seen corresponding path program 1 times [2022-07-13 22:08:17,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:08:17,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125840429] [2022-07-13 22:08:17,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:08:17,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:08:17,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:08:17,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:08:17,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:08:17,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125840429] [2022-07-13 22:08:17,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125840429] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:08:17,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:08:17,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 22:08:17,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43429475] [2022-07-13 22:08:17,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:08:17,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:08:17,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:08:17,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:08:17,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:08:17,800 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 264 [2022-07-13 22:08:17,801 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 217 transitions, 499 flow. Second operand has 6 states, 6 states have (on average 198.33333333333334) internal successors, (1190), 6 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:17,801 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:08:17,801 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 264 [2022-07-13 22:08:17,801 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:08:19,035 INFO L129 PetriNetUnfolder]: 4929/10331 cut-off events. [2022-07-13 22:08:19,036 INFO L130 PetriNetUnfolder]: For 2189/2189 co-relation queries the response was YES. [2022-07-13 22:08:19,068 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19625 conditions, 10331 events. 4929/10331 cut-off events. For 2189/2189 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 85408 event pairs, 1899 based on Foata normal form. 1/9262 useless extension candidates. Maximal degree in co-relation 19617. Up to 3014 conditions per place. [2022-07-13 22:08:19,114 INFO L132 encePairwiseOnDemand]: 252/264 looper letters, 99 selfloop transitions, 14 changer transitions 4/277 dead transitions. [2022-07-13 22:08:19,115 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 277 transitions, 912 flow [2022-07-13 22:08:19,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:08:19,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-13 22:08:19,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1263 transitions. [2022-07-13 22:08:19,118 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7973484848484849 [2022-07-13 22:08:19,118 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1263 transitions. [2022-07-13 22:08:19,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1263 transitions. [2022-07-13 22:08:19,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:08:19,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1263 transitions. [2022-07-13 22:08:19,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 210.5) internal successors, (1263), 6 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:19,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 264.0) internal successors, (1848), 7 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:19,123 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 264.0) internal successors, (1848), 7 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:19,124 INFO L186 Difference]: Start difference. First operand has 218 places, 217 transitions, 499 flow. Second operand 6 states and 1263 transitions. [2022-07-13 22:08:19,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 277 transitions, 912 flow [2022-07-13 22:08:19,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 277 transitions, 902 flow, removed 5 selfloop flow, removed 2 redundant places. [2022-07-13 22:08:19,130 INFO L242 Difference]: Finished difference. Result has 223 places, 224 transitions, 588 flow [2022-07-13 22:08:19,130 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=495, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=588, PETRI_PLACES=223, PETRI_TRANSITIONS=224} [2022-07-13 22:08:19,132 INFO L279 CegarLoopForPetriNet]: 224 programPoint places, -1 predicate places. [2022-07-13 22:08:19,132 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 224 transitions, 588 flow [2022-07-13 22:08:19,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 198.33333333333334) internal successors, (1190), 6 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:19,133 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:08:19,133 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:08:19,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 22:08:19,134 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-07-13 22:08:19,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:08:19,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1073338544, now seen corresponding path program 1 times [2022-07-13 22:08:19,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:08:19,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065398648] [2022-07-13 22:08:19,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:08:19,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:08:19,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:08:19,320 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:08:19,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:08:19,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065398648] [2022-07-13 22:08:19,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065398648] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:08:19,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:08:19,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 22:08:19,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549694082] [2022-07-13 22:08:19,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:08:19,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 22:08:19,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:08:19,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 22:08:19,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 22:08:19,327 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 264 [2022-07-13 22:08:19,328 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 224 transitions, 588 flow. Second operand has 7 states, 7 states have (on average 203.71428571428572) internal successors, (1426), 7 states have internal predecessors, (1426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:19,329 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:08:19,329 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 264 [2022-07-13 22:08:19,329 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:08:21,032 INFO L129 PetriNetUnfolder]: 6200/14218 cut-off events. [2022-07-13 22:08:21,032 INFO L130 PetriNetUnfolder]: For 6253/6253 co-relation queries the response was YES. [2022-07-13 22:08:21,093 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28095 conditions, 14218 events. 6200/14218 cut-off events. For 6253/6253 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 130144 event pairs, 1544 based on Foata normal form. 573/13424 useless extension candidates. Maximal degree in co-relation 28084. Up to 3830 conditions per place. [2022-07-13 22:08:21,171 INFO L132 encePairwiseOnDemand]: 254/264 looper letters, 136 selfloop transitions, 9 changer transitions 0/308 dead transitions. [2022-07-13 22:08:21,171 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 308 transitions, 1227 flow [2022-07-13 22:08:21,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 22:08:21,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-13 22:08:21,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1707 transitions. [2022-07-13 22:08:21,174 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8082386363636364 [2022-07-13 22:08:21,175 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1707 transitions. [2022-07-13 22:08:21,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1707 transitions. [2022-07-13 22:08:21,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:08:21,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1707 transitions. [2022-07-13 22:08:21,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 213.375) internal successors, (1707), 8 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:21,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 264.0) internal successors, (2376), 9 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:21,182 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 264.0) internal successors, (2376), 9 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:21,182 INFO L186 Difference]: Start difference. First operand has 223 places, 224 transitions, 588 flow. Second operand 8 states and 1707 transitions. [2022-07-13 22:08:21,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 308 transitions, 1227 flow [2022-07-13 22:08:21,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 308 transitions, 1215 flow, removed 6 selfloop flow, removed 2 redundant places. [2022-07-13 22:08:21,191 INFO L242 Difference]: Finished difference. Result has 231 places, 230 transitions, 657 flow [2022-07-13 22:08:21,191 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=580, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=657, PETRI_PLACES=231, PETRI_TRANSITIONS=230} [2022-07-13 22:08:21,192 INFO L279 CegarLoopForPetriNet]: 224 programPoint places, 7 predicate places. [2022-07-13 22:08:21,192 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 230 transitions, 657 flow [2022-07-13 22:08:21,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 203.71428571428572) internal successors, (1426), 7 states have internal predecessors, (1426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:21,193 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:08:21,193 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:08:21,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 22:08:21,193 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-07-13 22:08:21,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:08:21,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1596457134, now seen corresponding path program 1 times [2022-07-13 22:08:21,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:08:21,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660976249] [2022-07-13 22:08:21,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:08:21,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:08:21,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:08:21,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:08:21,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:08:21,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660976249] [2022-07-13 22:08:21,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660976249] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:08:21,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:08:21,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 22:08:21,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583160406] [2022-07-13 22:08:21,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:08:21,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 22:08:21,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:08:21,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 22:08:21,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-13 22:08:21,347 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 264 [2022-07-13 22:08:21,348 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 230 transitions, 657 flow. Second operand has 7 states, 7 states have (on average 203.71428571428572) internal successors, (1426), 7 states have internal predecessors, (1426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:21,348 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:08:21,348 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 264 [2022-07-13 22:08:21,348 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:08:22,880 INFO L129 PetriNetUnfolder]: 5147/11865 cut-off events. [2022-07-13 22:08:22,880 INFO L130 PetriNetUnfolder]: For 7729/7729 co-relation queries the response was YES. [2022-07-13 22:08:22,930 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25545 conditions, 11865 events. 5147/11865 cut-off events. For 7729/7729 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 105262 event pairs, 2814 based on Foata normal form. 138/10801 useless extension candidates. Maximal degree in co-relation 25530. Up to 6246 conditions per place. [2022-07-13 22:08:22,980 INFO L132 encePairwiseOnDemand]: 256/264 looper letters, 63 selfloop transitions, 4 changer transitions 34/264 dead transitions. [2022-07-13 22:08:22,980 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 264 transitions, 970 flow [2022-07-13 22:08:22,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 22:08:22,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-13 22:08:22,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1479 transitions. [2022-07-13 22:08:22,983 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8003246753246753 [2022-07-13 22:08:22,984 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1479 transitions. [2022-07-13 22:08:22,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1479 transitions. [2022-07-13 22:08:22,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:08:22,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1479 transitions. [2022-07-13 22:08:22,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 211.28571428571428) internal successors, (1479), 7 states have internal predecessors, (1479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:22,989 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 264.0) internal successors, (2112), 8 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:22,989 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 264.0) internal successors, (2112), 8 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:22,989 INFO L186 Difference]: Start difference. First operand has 231 places, 230 transitions, 657 flow. Second operand 7 states and 1479 transitions. [2022-07-13 22:08:22,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 264 transitions, 970 flow [2022-07-13 22:08:22,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 264 transitions, 967 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-13 22:08:22,997 INFO L242 Difference]: Finished difference. Result has 237 places, 227 transitions, 640 flow [2022-07-13 22:08:22,997 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=654, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=640, PETRI_PLACES=237, PETRI_TRANSITIONS=227} [2022-07-13 22:08:22,998 INFO L279 CegarLoopForPetriNet]: 224 programPoint places, 13 predicate places. [2022-07-13 22:08:22,998 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 227 transitions, 640 flow [2022-07-13 22:08:22,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 203.71428571428572) internal successors, (1426), 7 states have internal predecessors, (1426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:22,999 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:08:22,999 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:08:22,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 22:08:22,999 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-07-13 22:08:23,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:08:23,000 INFO L85 PathProgramCache]: Analyzing trace with hash -830309589, now seen corresponding path program 1 times [2022-07-13 22:08:23,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:08:23,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587911755] [2022-07-13 22:08:23,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:08:23,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:08:23,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:08:23,212 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:08:23,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:08:23,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587911755] [2022-07-13 22:08:23,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587911755] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:08:23,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664186575] [2022-07-13 22:08:23,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:08:23,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:08:23,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:08:23,240 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:08:23,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 22:08:23,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:08:23,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-13 22:08:23,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:08:23,605 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:08:23,606 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:08:23,993 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:08:23,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664186575] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 22:08:23,993 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 22:08:23,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-07-13 22:08:23,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336748715] [2022-07-13 22:08:23,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 22:08:23,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-13 22:08:23,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:08:23,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-13 22:08:23,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2022-07-13 22:08:23,998 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 264 [2022-07-13 22:08:24,001 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 227 transitions, 640 flow. Second operand has 19 states, 19 states have (on average 201.47368421052633) internal successors, (3828), 19 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:24,002 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:08:24,002 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 264 [2022-07-13 22:08:24,002 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:08:25,766 INFO L129 PetriNetUnfolder]: 6200/13789 cut-off events. [2022-07-13 22:08:25,766 INFO L130 PetriNetUnfolder]: For 10756/10756 co-relation queries the response was YES. [2022-07-13 22:08:25,835 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31134 conditions, 13789 events. 6200/13789 cut-off events. For 10756/10756 co-relation queries the response was YES. Maximal size of possible extension queue 496. Compared 123249 event pairs, 2030 based on Foata normal form. 156/12579 useless extension candidates. Maximal degree in co-relation 31117. Up to 3830 conditions per place. [2022-07-13 22:08:25,892 INFO L132 encePairwiseOnDemand]: 248/264 looper letters, 136 selfloop transitions, 17 changer transitions 0/315 dead transitions. [2022-07-13 22:08:25,892 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 315 transitions, 1339 flow [2022-07-13 22:08:25,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 22:08:25,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-13 22:08:25,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2891 transitions. [2022-07-13 22:08:25,897 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7821969696969697 [2022-07-13 22:08:25,897 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2891 transitions. [2022-07-13 22:08:25,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2891 transitions. [2022-07-13 22:08:25,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:08:25,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2891 transitions. [2022-07-13 22:08:25,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 206.5) internal successors, (2891), 14 states have internal predecessors, (2891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:25,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 264.0) internal successors, (3960), 15 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:25,907 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 264.0) internal successors, (3960), 15 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:25,907 INFO L186 Difference]: Start difference. First operand has 237 places, 227 transitions, 640 flow. Second operand 14 states and 2891 transitions. [2022-07-13 22:08:25,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 315 transitions, 1339 flow [2022-07-13 22:08:25,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 315 transitions, 1307 flow, removed 12 selfloop flow, removed 7 redundant places. [2022-07-13 22:08:25,918 INFO L242 Difference]: Finished difference. Result has 245 places, 236 transitions, 735 flow [2022-07-13 22:08:25,918 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=620, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=735, PETRI_PLACES=245, PETRI_TRANSITIONS=236} [2022-07-13 22:08:25,918 INFO L279 CegarLoopForPetriNet]: 224 programPoint places, 21 predicate places. [2022-07-13 22:08:25,919 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 236 transitions, 735 flow [2022-07-13 22:08:25,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 201.47368421052633) internal successors, (3828), 19 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:25,920 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:08:25,920 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:08:25,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 22:08:26,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-07-13 22:08:26,135 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-07-13 22:08:26,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:08:26,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1988649675, now seen corresponding path program 1 times [2022-07-13 22:08:26,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:08:26,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824487119] [2022-07-13 22:08:26,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:08:26,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:08:26,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:08:26,304 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:08:26,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:08:26,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824487119] [2022-07-13 22:08:26,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824487119] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:08:26,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866396879] [2022-07-13 22:08:26,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:08:26,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:08:26,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:08:26,310 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:08:26,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 22:08:26,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:08:26,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-13 22:08:26,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:08:26,748 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:08:26,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:08:26,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:08:26,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [866396879] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 22:08:26,924 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 22:08:26,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-07-13 22:08:26,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462575795] [2022-07-13 22:08:26,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 22:08:26,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-13 22:08:26,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:08:26,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-13 22:08:26,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2022-07-13 22:08:26,927 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 264 [2022-07-13 22:08:26,930 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 236 transitions, 735 flow. Second operand has 18 states, 18 states have (on average 201.77777777777777) internal successors, (3632), 18 states have internal predecessors, (3632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:26,930 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:08:26,930 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 264 [2022-07-13 22:08:26,930 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:08:28,671 INFO L129 PetriNetUnfolder]: 4877/12051 cut-off events. [2022-07-13 22:08:28,671 INFO L130 PetriNetUnfolder]: For 10643/10643 co-relation queries the response was YES. [2022-07-13 22:08:28,719 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26948 conditions, 12051 events. 4877/12051 cut-off events. For 10643/10643 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 112182 event pairs, 1253 based on Foata normal form. 408/11200 useless extension candidates. Maximal degree in co-relation 26928. Up to 3505 conditions per place. [2022-07-13 22:08:28,761 INFO L132 encePairwiseOnDemand]: 248/264 looper letters, 93 selfloop transitions, 14 changer transitions 38/307 dead transitions. [2022-07-13 22:08:28,762 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 307 transitions, 1348 flow [2022-07-13 22:08:28,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 22:08:28,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-13 22:08:28,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2885 transitions. [2022-07-13 22:08:28,767 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7805735930735931 [2022-07-13 22:08:28,767 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2885 transitions. [2022-07-13 22:08:28,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2885 transitions. [2022-07-13 22:08:28,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:08:28,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2885 transitions. [2022-07-13 22:08:28,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 206.07142857142858) internal successors, (2885), 14 states have internal predecessors, (2885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:28,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 264.0) internal successors, (3960), 15 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:28,778 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 264.0) internal successors, (3960), 15 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:28,778 INFO L186 Difference]: Start difference. First operand has 245 places, 236 transitions, 735 flow. Second operand 14 states and 2885 transitions. [2022-07-13 22:08:28,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 307 transitions, 1348 flow [2022-07-13 22:08:28,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 307 transitions, 1331 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-07-13 22:08:28,788 INFO L242 Difference]: Finished difference. Result has 257 places, 233 transitions, 729 flow [2022-07-13 22:08:28,788 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=718, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=729, PETRI_PLACES=257, PETRI_TRANSITIONS=233} [2022-07-13 22:08:28,789 INFO L279 CegarLoopForPetriNet]: 224 programPoint places, 33 predicate places. [2022-07-13 22:08:28,789 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 233 transitions, 729 flow [2022-07-13 22:08:28,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 201.77777777777777) internal successors, (3632), 18 states have internal predecessors, (3632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:28,790 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:08:28,791 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:08:28,815 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 22:08:29,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-07-13 22:08:29,002 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-07-13 22:08:29,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:08:29,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1697452556, now seen corresponding path program 2 times [2022-07-13 22:08:29,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:08:29,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082622213] [2022-07-13 22:08:29,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:08:29,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:08:29,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:08:29,149 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 22:08:29,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:08:29,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082622213] [2022-07-13 22:08:29,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082622213] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:08:29,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472789294] [2022-07-13 22:08:29,150 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 22:08:29,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:08:29,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:08:29,152 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:08:29,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 22:08:29,285 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 22:08:29,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:08:29,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-13 22:08:29,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:08:29,487 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 22:08:29,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:08:29,679 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 22:08:29,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472789294] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-13 22:08:29,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-13 22:08:29,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 9] total 18 [2022-07-13 22:08:29,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437237490] [2022-07-13 22:08:29,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:08:29,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 22:08:29,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:08:29,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 22:08:29,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2022-07-13 22:08:29,682 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 264 [2022-07-13 22:08:29,683 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 233 transitions, 729 flow. Second operand has 9 states, 9 states have (on average 202.77777777777777) internal successors, (1825), 9 states have internal predecessors, (1825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:29,683 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:08:29,683 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 264 [2022-07-13 22:08:29,683 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:08:30,754 INFO L129 PetriNetUnfolder]: 3360/7807 cut-off events. [2022-07-13 22:08:30,754 INFO L130 PetriNetUnfolder]: For 10666/10666 co-relation queries the response was YES. [2022-07-13 22:08:30,798 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20372 conditions, 7807 events. 3360/7807 cut-off events. For 10666/10666 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 64724 event pairs, 1268 based on Foata normal form. 162/7253 useless extension candidates. Maximal degree in co-relation 20348. Up to 4107 conditions per place. [2022-07-13 22:08:30,831 INFO L132 encePairwiseOnDemand]: 252/264 looper letters, 85 selfloop transitions, 11 changer transitions 0/258 dead transitions. [2022-07-13 22:08:30,832 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 258 transitions, 1056 flow [2022-07-13 22:08:30,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 22:08:30,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-13 22:08:30,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2053 transitions. [2022-07-13 22:08:30,836 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7776515151515152 [2022-07-13 22:08:30,836 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2053 transitions. [2022-07-13 22:08:30,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2053 transitions. [2022-07-13 22:08:30,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:08:30,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2053 transitions. [2022-07-13 22:08:30,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 205.3) internal successors, (2053), 10 states have internal predecessors, (2053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:30,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 264.0) internal successors, (2904), 11 states have internal predecessors, (2904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:30,843 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 264.0) internal successors, (2904), 11 states have internal predecessors, (2904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:30,843 INFO L186 Difference]: Start difference. First operand has 257 places, 233 transitions, 729 flow. Second operand 10 states and 2053 transitions. [2022-07-13 22:08:30,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 258 transitions, 1056 flow [2022-07-13 22:08:30,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 258 transitions, 992 flow, removed 19 selfloop flow, removed 15 redundant places. [2022-07-13 22:08:30,853 INFO L242 Difference]: Finished difference. Result has 249 places, 236 transitions, 731 flow [2022-07-13 22:08:30,854 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=681, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=731, PETRI_PLACES=249, PETRI_TRANSITIONS=236} [2022-07-13 22:08:30,854 INFO L279 CegarLoopForPetriNet]: 224 programPoint places, 25 predicate places. [2022-07-13 22:08:30,854 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 236 transitions, 731 flow [2022-07-13 22:08:30,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 202.77777777777777) internal successors, (1825), 9 states have internal predecessors, (1825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:30,855 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:08:30,855 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:08:30,889 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-07-13 22:08:31,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:08:31,093 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-07-13 22:08:31,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:08:31,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1013384774, now seen corresponding path program 2 times [2022-07-13 22:08:31,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:08:31,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709821446] [2022-07-13 22:08:31,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:08:31,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:08:31,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:08:31,236 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 22:08:31,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:08:31,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709821446] [2022-07-13 22:08:31,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709821446] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:08:31,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033228366] [2022-07-13 22:08:31,238 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 22:08:31,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:08:31,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:08:31,240 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:08:31,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 22:08:31,383 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 22:08:31,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:08:31,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-13 22:08:31,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:08:31,594 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 22:08:31,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:08:31,791 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 22:08:31,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033228366] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-13 22:08:31,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-13 22:08:31,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 9] total 18 [2022-07-13 22:08:31,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849065713] [2022-07-13 22:08:31,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:08:31,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 22:08:31,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:08:31,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 22:08:31,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2022-07-13 22:08:31,794 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 264 [2022-07-13 22:08:31,796 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 236 transitions, 731 flow. Second operand has 9 states, 9 states have (on average 202.77777777777777) internal successors, (1825), 9 states have internal predecessors, (1825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:31,796 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:08:31,796 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 264 [2022-07-13 22:08:31,796 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:08:32,582 INFO L129 PetriNetUnfolder]: 2541/5996 cut-off events. [2022-07-13 22:08:32,582 INFO L130 PetriNetUnfolder]: For 6635/6635 co-relation queries the response was YES. [2022-07-13 22:08:32,617 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15376 conditions, 5996 events. 2541/5996 cut-off events. For 6635/6635 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 47086 event pairs, 1043 based on Foata normal form. 114/5560 useless extension candidates. Maximal degree in co-relation 15355. Up to 3108 conditions per place. [2022-07-13 22:08:32,643 INFO L132 encePairwiseOnDemand]: 252/264 looper letters, 89 selfloop transitions, 11 changer transitions 0/262 dead transitions. [2022-07-13 22:08:32,643 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 262 transitions, 1063 flow [2022-07-13 22:08:32,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 22:08:32,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-13 22:08:32,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2053 transitions. [2022-07-13 22:08:32,646 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7776515151515152 [2022-07-13 22:08:32,647 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2053 transitions. [2022-07-13 22:08:32,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2053 transitions. [2022-07-13 22:08:32,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:08:32,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2053 transitions. [2022-07-13 22:08:32,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 205.3) internal successors, (2053), 10 states have internal predecessors, (2053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:32,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 264.0) internal successors, (2904), 11 states have internal predecessors, (2904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:32,653 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 264.0) internal successors, (2904), 11 states have internal predecessors, (2904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:32,654 INFO L186 Difference]: Start difference. First operand has 249 places, 236 transitions, 731 flow. Second operand 10 states and 2053 transitions. [2022-07-13 22:08:32,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 262 transitions, 1063 flow [2022-07-13 22:08:32,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 262 transitions, 1030 flow, removed 7 selfloop flow, removed 7 redundant places. [2022-07-13 22:08:32,663 INFO L242 Difference]: Finished difference. Result has 252 places, 238 transitions, 747 flow [2022-07-13 22:08:32,664 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=705, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=747, PETRI_PLACES=252, PETRI_TRANSITIONS=238} [2022-07-13 22:08:32,664 INFO L279 CegarLoopForPetriNet]: 224 programPoint places, 28 predicate places. [2022-07-13 22:08:32,665 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 238 transitions, 747 flow [2022-07-13 22:08:32,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 202.77777777777777) internal successors, (1825), 9 states have internal predecessors, (1825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:32,665 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:08:32,665 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:08:32,690 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-13 22:08:32,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:08:32,881 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-07-13 22:08:32,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:08:32,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1766561699, now seen corresponding path program 1 times [2022-07-13 22:08:32,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:08:32,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475040774] [2022-07-13 22:08:32,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:08:32,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:08:32,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:08:33,277 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-13 22:08:33,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:08:33,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475040774] [2022-07-13 22:08:33,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475040774] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:08:33,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410874925] [2022-07-13 22:08:33,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:08:33,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:08:33,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:08:33,292 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:08:33,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-13 22:08:33,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:08:33,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 64 conjunts are in the unsatisfiable core [2022-07-13 22:08:33,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:08:33,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:08:33,865 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-07-13 22:08:33,923 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-07-13 22:08:34,074 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 22:08:34,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:08:34,237 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_483 (Array Int Int))) (<= c_~s_6~0 (+ (select (select (store |c_#memory_int| |c_thread1Thread1of1ForFork3_~#t2~0.base| v_ArrVal_483) c_~X_0~0.base) (+ c_~X_0~0.offset 4 (* 4 c_~i_3~0))) c_~s_2~0))) (forall ((v_ArrVal_483 (Array Int Int))) (< (+ (select (select (store |c_#memory_int| |c_thread1Thread1of1ForFork3_~#t2~0.base| v_ArrVal_483) c_~X_0~0.base) (+ c_~X_0~0.offset 4 (* 4 c_~i_3~0))) c_~s_2~0) (+ c_~s_6~0 1)))) is different from false [2022-07-13 22:08:34,269 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_483 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_thread1Thread1of1ForFork3_~#t2~0.base| v_ArrVal_483) c_~X_0~0.base) (+ c_~X_0~0.offset 4)) (+ c_~s_6~0 1))) (forall ((v_ArrVal_483 (Array Int Int))) (<= c_~s_6~0 (select (select (store |c_#memory_int| |c_thread1Thread1of1ForFork3_~#t2~0.base| v_ArrVal_483) c_~X_0~0.base) (+ c_~X_0~0.offset 4))))) is different from false [2022-07-13 22:08:36,308 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_thread1Thread1of1ForFork3_~#t2~0.base_26| Int)) (or (and (forall ((v_ArrVal_483 (Array Int Int))) (<= c_~s_6~0 (select (select (store |c_#memory_int| |v_thread1Thread1of1ForFork3_~#t2~0.base_26| v_ArrVal_483) c_~X_0~0.base) (+ c_~X_0~0.offset 4)))) (forall ((v_ArrVal_483 (Array Int Int))) (< (select (select (store |c_#memory_int| |v_thread1Thread1of1ForFork3_~#t2~0.base_26| v_ArrVal_483) c_~X_0~0.base) (+ c_~X_0~0.offset 4)) (+ c_~s_6~0 1)))) (not (< |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork3_~#t2~0.base_26|)))) is different from false [2022-07-13 22:08:36,456 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_thread1Thread1of1ForFork3_~#t2~0.base_26| Int)) (or (not (< |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork3_~#t2~0.base_26|)) (and (forall ((v_ArrVal_483 (Array Int Int))) (< (select (select (store |c_#memory_int| |v_thread1Thread1of1ForFork3_~#t2~0.base_26| v_ArrVal_483) c_~X_0~0.base) (+ c_~X_0~0.offset 4)) (+ c_~s_6~0 c_~t_8~0 1))) (forall ((v_ArrVal_483 (Array Int Int))) (<= (+ c_~s_6~0 c_~t_8~0) (select (select (store |c_#memory_int| |v_thread1Thread1of1ForFork3_~#t2~0.base_26| v_ArrVal_483) c_~X_0~0.base) (+ c_~X_0~0.offset 4))))))) is different from false [2022-07-13 22:08:36,466 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 22:08:36,467 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 41 [2022-07-13 22:08:36,469 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-07-13 22:08:36,483 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 22:08:36,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:08:36,486 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 3 [2022-07-13 22:08:36,717 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 1 not checked. [2022-07-13 22:08:36,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410874925] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 22:08:36,717 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 22:08:36,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19, 17] total 42 [2022-07-13 22:08:36,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159386812] [2022-07-13 22:08:36,717 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 22:08:36,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-07-13 22:08:36,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:08:36,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-07-13 22:08:36,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1286, Unknown=4, NotChecked=300, Total=1722 [2022-07-13 22:08:36,722 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 264 [2022-07-13 22:08:36,725 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 238 transitions, 747 flow. Second operand has 42 states, 42 states have (on average 145.0952380952381) internal successors, (6094), 42 states have internal predecessors, (6094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:36,725 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:08:36,725 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 264 [2022-07-13 22:08:36,725 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:08:39,214 WARN L833 $PredicateComparison]: unable to prove that (and (<= 1 c_~i_7~0) (<= (+ c_~X_0~0.base 1) |c_#StackHeapBarrier|) (<= (+ |c_ULTIMATE.start_create_fresh_int_array_#res#1.base| 1) |c_#StackHeapBarrier|) (= |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset| 0) (= c_~s_6~0 0) (<= (+ |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 1) |c_#StackHeapBarrier|) (forall ((|v_thread1Thread1of1ForFork3_~#t2~0.base_26| Int)) (or (not (< |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork3_~#t2~0.base_26|)) (and (forall ((v_ArrVal_483 (Array Int Int))) (< (select (select (store |c_#memory_int| |v_thread1Thread1of1ForFork3_~#t2~0.base_26| v_ArrVal_483) c_~X_0~0.base) (+ c_~X_0~0.offset 4)) (+ c_~s_6~0 c_~t_8~0 1))) (forall ((v_ArrVal_483 (Array Int Int))) (<= (+ c_~s_6~0 c_~t_8~0) (select (select (store |c_#memory_int| |v_thread1Thread1of1ForFork3_~#t2~0.base_26| v_ArrVal_483) c_~X_0~0.base) (+ c_~X_0~0.offset 4))))))) (= 0 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) (<= c_~i_7~0 1) (= c_~X_0~0.offset 0) (= (select (select |c_#memory_int| c_~X_0~0.base) (+ c_~X_0~0.offset (* 4 c_~i_7~0))) c_~t_8~0)) is different from false [2022-07-13 22:08:41,240 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_int| c_~X_0~0.base) (+ c_~X_0~0.offset (* 4 c_~i_7~0))))) (and (<= 1 c_~i_7~0) (<= (+ c_~X_0~0.base 1) |c_#StackHeapBarrier|) (forall ((|v_thread1Thread1of1ForFork3_~#t2~0.base_26| Int)) (or (and (forall ((v_ArrVal_483 (Array Int Int))) (<= c_~s_6~0 (select (select (store |c_#memory_int| |v_thread1Thread1of1ForFork3_~#t2~0.base_26| v_ArrVal_483) c_~X_0~0.base) (+ c_~X_0~0.offset 4)))) (forall ((v_ArrVal_483 (Array Int Int))) (< (select (select (store |c_#memory_int| |v_thread1Thread1of1ForFork3_~#t2~0.base_26| v_ArrVal_483) c_~X_0~0.base) (+ c_~X_0~0.offset 4)) (+ c_~s_6~0 1)))) (not (< |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork3_~#t2~0.base_26|)))) (<= .cse0 c_~s_6~0) (<= c_~s_6~0 .cse0) (<= c_~i_7~0 1) (= c_~X_0~0.offset 0))) is different from false [2022-07-13 22:08:43,262 WARN L833 $PredicateComparison]: unable to prove that (and (<= 1 c_~i_7~0) (<= (+ c_~X_0~0.base 1) |c_#StackHeapBarrier|) (<= (+ |c_ULTIMATE.start_create_fresh_int_array_#res#1.base| 1) |c_#StackHeapBarrier|) (= |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset| 0) (= c_~s_6~0 0) (<= (+ |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 1) |c_#StackHeapBarrier|) (<= c_~s_6~0 c_~s_2~0) (forall ((|v_thread1Thread1of1ForFork3_~#t2~0.base_26| Int)) (or (not (< |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork3_~#t2~0.base_26|)) (and (forall ((v_ArrVal_483 (Array Int Int))) (< (select (select (store |c_#memory_int| |v_thread1Thread1of1ForFork3_~#t2~0.base_26| v_ArrVal_483) c_~X_0~0.base) (+ c_~X_0~0.offset 4)) (+ c_~s_6~0 c_~t_8~0 1))) (forall ((v_ArrVal_483 (Array Int Int))) (<= (+ c_~s_6~0 c_~t_8~0) (select (select (store |c_#memory_int| |v_thread1Thread1of1ForFork3_~#t2~0.base_26| v_ArrVal_483) c_~X_0~0.base) (+ c_~X_0~0.offset 4))))))) (< c_~s_2~0 (+ c_~s_6~0 1)) (= 0 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) (<= c_~i_7~0 1) (= c_~X_0~0.offset 0) (= (select (select |c_#memory_int| c_~X_0~0.base) (+ c_~X_0~0.offset (* 4 c_~i_7~0))) c_~t_8~0)) is different from false [2022-07-13 22:08:53,336 INFO L129 PetriNetUnfolder]: 51475/83129 cut-off events. [2022-07-13 22:08:53,337 INFO L130 PetriNetUnfolder]: For 110645/110645 co-relation queries the response was YES. [2022-07-13 22:08:53,872 INFO L84 FinitePrefix]: Finished finitePrefix Result has 240638 conditions, 83129 events. 51475/83129 cut-off events. For 110645/110645 co-relation queries the response was YES. Maximal size of possible extension queue 2579. Compared 694340 event pairs, 6713 based on Foata normal form. 1/79067 useless extension candidates. Maximal degree in co-relation 240616. Up to 39671 conditions per place. [2022-07-13 22:08:54,391 INFO L132 encePairwiseOnDemand]: 213/264 looper letters, 316 selfloop transitions, 226 changer transitions 4/657 dead transitions. [2022-07-13 22:08:54,391 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 657 transitions, 3731 flow [2022-07-13 22:08:54,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-13 22:08:54,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-07-13 22:08:54,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4397 transitions. [2022-07-13 22:08:54,428 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5948322510822511 [2022-07-13 22:08:54,428 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4397 transitions. [2022-07-13 22:08:54,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4397 transitions. [2022-07-13 22:08:54,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:08:54,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4397 transitions. [2022-07-13 22:08:54,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 157.03571428571428) internal successors, (4397), 28 states have internal predecessors, (4397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:54,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 264.0) internal successors, (7656), 29 states have internal predecessors, (7656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:54,449 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 264.0) internal successors, (7656), 29 states have internal predecessors, (7656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:54,449 INFO L186 Difference]: Start difference. First operand has 252 places, 238 transitions, 747 flow. Second operand 28 states and 4397 transitions. [2022-07-13 22:08:54,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 657 transitions, 3731 flow [2022-07-13 22:08:54,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 657 transitions, 3644 flow, removed 21 selfloop flow, removed 8 redundant places. [2022-07-13 22:08:54,542 INFO L242 Difference]: Finished difference. Result has 285 places, 478 transitions, 2781 flow [2022-07-13 22:08:54,542 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=725, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=2781, PETRI_PLACES=285, PETRI_TRANSITIONS=478} [2022-07-13 22:08:54,543 INFO L279 CegarLoopForPetriNet]: 224 programPoint places, 61 predicate places. [2022-07-13 22:08:54,543 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 478 transitions, 2781 flow [2022-07-13 22:08:54,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 145.0952380952381) internal successors, (6094), 42 states have internal predecessors, (6094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:54,545 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:08:54,545 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:08:54,563 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-07-13 22:08:54,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-13 22:08:54,760 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-07-13 22:08:54,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:08:54,761 INFO L85 PathProgramCache]: Analyzing trace with hash -2032663489, now seen corresponding path program 2 times [2022-07-13 22:08:54,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:08:54,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872276175] [2022-07-13 22:08:54,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:08:54,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:08:54,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:08:55,071 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-13 22:08:55,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:08:55,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872276175] [2022-07-13 22:08:55,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872276175] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:08:55,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848585326] [2022-07-13 22:08:55,072 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 22:08:55,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:08:55,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:08:55,088 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:08:55,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-13 22:08:55,242 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 22:08:55,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:08:55,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 70 conjunts are in the unsatisfiable core [2022-07-13 22:08:55,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:08:56,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:08:56,242 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-07-13 22:08:56,326 INFO L356 Elim1Store]: treesize reduction 11, result has 21.4 percent of original size [2022-07-13 22:08:56,327 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 10 [2022-07-13 22:08:56,439 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:08:56,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:08:56,601 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_552 (Array Int Int))) (<= c_~s_2~0 (+ c_~s_6~0 (select (select (store |c_#memory_int| |c_thread4Thread1of1ForFork0_~#t5~0.base| v_ArrVal_552) c_~X_0~0.base) (+ c_~X_0~0.offset 4 (* 4 c_~i_7~0)))))) (forall ((v_ArrVal_552 (Array Int Int))) (< (+ c_~s_6~0 (select (select (store |c_#memory_int| |c_thread4Thread1of1ForFork0_~#t5~0.base| v_ArrVal_552) c_~X_0~0.base) (+ c_~X_0~0.offset 4 (* 4 c_~i_7~0)))) (+ 1 c_~s_2~0)))) is different from false [2022-07-13 22:08:56,614 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_552 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_thread4Thread1of1ForFork0_~#t5~0.base| v_ArrVal_552) c_~X_0~0.base) (+ c_~X_0~0.offset 4)) (+ 1 c_~s_2~0))) (forall ((v_ArrVal_552 (Array Int Int))) (<= c_~s_2~0 (select (select (store |c_#memory_int| |c_thread4Thread1of1ForFork0_~#t5~0.base| v_ArrVal_552) c_~X_0~0.base) (+ c_~X_0~0.offset 4))))) is different from false [2022-07-13 22:08:56,814 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 22:08:56,814 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 38 [2022-07-13 22:08:56,817 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-13 22:08:56,830 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 22:08:56,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:08:56,832 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 5 [2022-07-13 22:08:57,827 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:08:57,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [848585326] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 22:08:57,828 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 22:08:57,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 24, 24] total 55 [2022-07-13 22:08:57,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23205426] [2022-07-13 22:08:57,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 22:08:57,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-07-13 22:08:57,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:08:57,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-07-13 22:08:57,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=2558, Unknown=3, NotChecked=206, Total=2970 [2022-07-13 22:08:57,836 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 264 [2022-07-13 22:08:57,840 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 478 transitions, 2781 flow. Second operand has 55 states, 55 states have (on average 140.85454545454544) internal successors, (7747), 55 states have internal predecessors, (7747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:57,840 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:08:57,840 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 264 [2022-07-13 22:08:57,840 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand