./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 6c24879c 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-?-6c24879 [2022-07-12 10:27:48,285 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:27:48,287 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:27:48,322 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:27:48,323 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:27:48,324 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:27:48,325 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:27:48,327 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:27:48,328 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:27:48,331 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:27:48,332 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:27:48,334 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:27:48,334 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:27:48,335 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:27:48,336 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:27:48,338 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:27:48,339 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:27:48,340 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:27:48,341 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:27:48,345 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:27:48,347 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:27:48,348 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:27:48,348 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:27:48,349 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:27:48,350 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:27:48,355 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:27:48,355 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:27:48,355 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:27:48,356 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:27:48,357 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:27:48,357 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:27:48,357 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:27:48,359 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:27:48,360 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:27:48,360 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:27:48,361 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:27:48,361 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:27:48,361 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:27:48,362 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:27:48,362 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:27:48,362 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:27:48,364 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:27:48,365 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 10:27:48,388 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:27:48,388 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:27:48,389 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:27:48,389 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:27:48,389 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:27:48,389 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:27:48,390 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:27:48,390 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:27:48,390 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:27:48,391 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:27:48,391 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 10:27:48,391 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:27:48,391 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 10:27:48,392 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:27:48,392 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:27:48,392 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:27:48,392 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:27:48,392 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 10:27:48,392 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:27:48,393 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:27:48,393 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:27:48,394 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:27:48,394 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:27:48,394 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:27:48,394 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:27:48,394 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:27:48,395 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:27:48,395 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:27:48,395 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:27:48,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:27:48,395 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:27:48,396 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:27:48,396 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:27:48,396 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b8fef41c3119c5f4fc9586ebd31a4ff7152be41d9f2f8da139e8cd34cf0da86 [2022-07-12 10:27:48,618 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:27:48,636 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:27:48,638 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:27:48,639 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:27:48,639 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:27:48,640 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.wvr.c [2022-07-12 10:27:48,684 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f43f84d98/3ff3927de4d744b599183260331701d5/FLAGb0675ef6e [2022-07-12 10:27:49,091 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:27:49,091 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.wvr.c [2022-07-12 10:27:49,098 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f43f84d98/3ff3927de4d744b599183260331701d5/FLAGb0675ef6e [2022-07-12 10:27:49,114 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f43f84d98/3ff3927de4d744b599183260331701d5 [2022-07-12 10:27:49,116 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:27:49,117 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:27:49,119 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:27:49,119 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:27:49,121 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:27:49,122 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:27:49" (1/1) ... [2022-07-12 10:27:49,122 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@769381f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:27:49, skipping insertion in model container [2022-07-12 10:27:49,122 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:27:49" (1/1) ... [2022-07-12 10:27:49,127 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:27:49,151 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:27:49,360 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] [2022-07-12 10:27:49,370 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:27:49,380 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:27:49,419 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] [2022-07-12 10:27:49,426 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:27:49,438 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:27:49,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:27:49 WrapperNode [2022-07-12 10:27:49,439 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:27:49,440 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:27:49,440 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:27:49,440 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:27:49,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:27:49" (1/1) ... [2022-07-12 10:27:49,451 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:27:49" (1/1) ... [2022-07-12 10:27:49,481 INFO L137 Inliner]: procedures = 29, calls = 95, calls flagged for inlining = 21, calls inlined = 27, statements flattened = 289 [2022-07-12 10:27:49,485 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:27:49,486 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:27:49,486 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:27:49,486 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:27:49,491 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:27:49" (1/1) ... [2022-07-12 10:27:49,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:27:49" (1/1) ... [2022-07-12 10:27:49,505 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:27:49" (1/1) ... [2022-07-12 10:27:49,505 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:27:49" (1/1) ... [2022-07-12 10:27:49,513 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:27:49" (1/1) ... [2022-07-12 10:27:49,522 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:27:49" (1/1) ... [2022-07-12 10:27:49,531 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:27:49" (1/1) ... [2022-07-12 10:27:49,534 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:27:49,534 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:27:49,535 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:27:49,535 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:27:49,535 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:27:49" (1/1) ... [2022-07-12 10:27:49,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:27:49,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:27:49,557 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) [2022-07-12 10:27:49,562 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 [2022-07-12 10:27:49,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:27:49,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:27:49,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:27:49,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 10:27:49,583 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-12 10:27:49,583 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-12 10:27:49,584 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-12 10:27:49,584 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-12 10:27:49,584 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-12 10:27:49,584 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-12 10:27:49,584 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-07-12 10:27:49,584 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-07-12 10:27:49,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:27:49,584 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-07-12 10:27:49,584 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-07-12 10:27:49,585 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2022-07-12 10:27:49,585 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2022-07-12 10:27:49,585 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-12 10:27:49,585 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-12 10:27:49,585 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 10:27:49,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:27:49,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:27:49,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:27:49,587 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-12 10:27:49,665 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:27:49,666 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:27:50,102 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:27:50,233 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:27:50,235 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-07-12 10:27:50,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:27:50 BoogieIcfgContainer [2022-07-12 10:27:50,239 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:27:50,240 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:27:50,240 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:27:50,243 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:27:50,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:27:49" (1/3) ... [2022-07-12 10:27:50,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@481089b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:27:50, skipping insertion in model container [2022-07-12 10:27:50,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:27:49" (2/3) ... [2022-07-12 10:27:50,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@481089b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:27:50, skipping insertion in model container [2022-07-12 10:27:50,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:27:50" (3/3) ... [2022-07-12 10:27:50,245 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-1-dsl.wvr.c [2022-07-12 10:27:50,249 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-12 10:27:50,256 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:27:50,256 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 10:27:50,256 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-12 10:27:50,337 INFO L135 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2022-07-12 10:27:50,371 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 261 places, 260 transitions, 592 flow [2022-07-12 10:27:50,462 INFO L129 PetriNetUnfolder]: 18/232 cut-off events. [2022-07-12 10:27:50,463 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-07-12 10:27:50,468 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. [2022-07-12 10:27:50,468 INFO L82 GeneralOperation]: Start removeDead. Operand has 261 places, 260 transitions, 592 flow [2022-07-12 10:27:50,474 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 224 places, 223 transitions, 494 flow [2022-07-12 10:27:50,483 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:27:50,488 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@64e1efcd, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@70926a8a [2022-07-12 10:27:50,488 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-07-12 10:27:50,534 INFO L129 PetriNetUnfolder]: 18/222 cut-off events. [2022-07-12 10:27:50,535 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-07-12 10:27:50,535 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:27:50,535 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] [2022-07-12 10:27:50,536 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)] === [2022-07-12 10:27:50,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:27:50,540 INFO L85 PathProgramCache]: Analyzing trace with hash -124297982, now seen corresponding path program 1 times [2022-07-12 10:27:50,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:27:50,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762406694] [2022-07-12 10:27:50,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:27:50,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:27:50,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:27:50,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:27:50,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:27:50,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762406694] [2022-07-12 10:27:50,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762406694] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:27:50,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:27:50,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 10:27:50,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911102985] [2022-07-12 10:27:50,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:27:50,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 10:27:50,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:27:50,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 10:27:50,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 10:27:50,840 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 264 [2022-07-12 10:27:50,845 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) [2022-07-12 10:27:50,846 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:27:50,846 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 264 [2022-07-12 10:27:50,847 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:27:51,264 INFO L129 PetriNetUnfolder]: 1084/2340 cut-off events. [2022-07-12 10:27:51,265 INFO L130 PetriNetUnfolder]: For 684/684 co-relation queries the response was YES. [2022-07-12 10:27:51,273 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. [2022-07-12 10:27:51,288 INFO L132 encePairwiseOnDemand]: 255/264 looper letters, 30 selfloop transitions, 0 changer transitions 4/214 dead transitions. [2022-07-12 10:27:51,289 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 214 transitions, 536 flow [2022-07-12 10:27:51,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 10:27:51,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-12 10:27:51,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 471 transitions. [2022-07-12 10:27:51,305 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8920454545454546 [2022-07-12 10:27:51,306 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 471 transitions. [2022-07-12 10:27:51,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 471 transitions. [2022-07-12 10:27:51,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:27:51,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 471 transitions. [2022-07-12 10:27:51,315 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) [2022-07-12 10:27:51,322 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) [2022-07-12 10:27:51,322 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) [2022-07-12 10:27:51,324 INFO L186 Difference]: Start difference. First operand has 224 places, 223 transitions, 494 flow. Second operand 2 states and 471 transitions. [2022-07-12 10:27:51,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 214 transitions, 536 flow [2022-07-12 10:27:51,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 214 transitions, 504 flow, removed 0 selfloop flow, removed 12 redundant places. [2022-07-12 10:27:51,334 INFO L242 Difference]: Finished difference. Result has 213 places, 210 transitions, 436 flow [2022-07-12 10:27:51,336 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} [2022-07-12 10:27:51,339 INFO L279 CegarLoopForPetriNet]: 224 programPoint places, -11 predicate places. [2022-07-12 10:27:51,340 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 210 transitions, 436 flow [2022-07-12 10:27:51,340 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) [2022-07-12 10:27:51,340 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:27:51,341 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] [2022-07-12 10:27:51,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 10:27:51,341 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)] === [2022-07-12 10:27:51,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:27:51,342 INFO L85 PathProgramCache]: Analyzing trace with hash 338119102, now seen corresponding path program 1 times [2022-07-12 10:27:51,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:27:51,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148651778] [2022-07-12 10:27:51,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:27:51,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:27:51,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:27:51,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:27:51,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:27:51,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148651778] [2022-07-12 10:27:51,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148651778] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:27:51,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:27:51,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 10:27:51,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234155162] [2022-07-12 10:27:51,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:27:51,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:27:51,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:27:51,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:27:51,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:27:51,676 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 264 [2022-07-12 10:27:51,678 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) [2022-07-12 10:27:51,678 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:27:51,678 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 264 [2022-07-12 10:27:51,678 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:27:52,543 INFO L129 PetriNetUnfolder]: 3024/6500 cut-off events. [2022-07-12 10:27:52,543 INFO L130 PetriNetUnfolder]: For 486/486 co-relation queries the response was YES. [2022-07-12 10:27:52,560 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. [2022-07-12 10:27:52,597 INFO L132 encePairwiseOnDemand]: 253/264 looper letters, 95 selfloop transitions, 10 changer transitions 4/269 dead transitions. [2022-07-12 10:27:52,598 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 269 transitions, 799 flow [2022-07-12 10:27:52,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 10:27:52,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-12 10:27:52,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1262 transitions. [2022-07-12 10:27:52,601 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7967171717171717 [2022-07-12 10:27:52,601 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1262 transitions. [2022-07-12 10:27:52,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1262 transitions. [2022-07-12 10:27:52,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:27:52,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1262 transitions. [2022-07-12 10:27:52,604 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) [2022-07-12 10:27:52,608 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) [2022-07-12 10:27:52,609 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) [2022-07-12 10:27:52,609 INFO L186 Difference]: Start difference. First operand has 213 places, 210 transitions, 436 flow. Second operand 6 states and 1262 transitions. [2022-07-12 10:27:52,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 269 transitions, 799 flow [2022-07-12 10:27:52,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 269 transitions, 799 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-12 10:27:52,619 INFO L242 Difference]: Finished difference. Result has 218 places, 217 transitions, 499 flow [2022-07-12 10:27:52,619 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} [2022-07-12 10:27:52,620 INFO L279 CegarLoopForPetriNet]: 224 programPoint places, -6 predicate places. [2022-07-12 10:27:52,620 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 217 transitions, 499 flow [2022-07-12 10:27:52,621 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) [2022-07-12 10:27:52,621 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:27:52,621 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] [2022-07-12 10:27:52,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 10:27:52,622 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)] === [2022-07-12 10:27:52,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:27:52,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1295048629, now seen corresponding path program 1 times [2022-07-12 10:27:52,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:27:52,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573383112] [2022-07-12 10:27:52,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:27:52,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:27:52,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:27:52,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:27:52,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:27:52,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573383112] [2022-07-12 10:27:52,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573383112] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:27:52,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:27:52,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 10:27:52,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921666181] [2022-07-12 10:27:52,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:27:52,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:27:52,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:27:52,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:27:52,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:27:52,815 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 264 [2022-07-12 10:27:52,816 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) [2022-07-12 10:27:52,816 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:27:52,816 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 264 [2022-07-12 10:27:52,817 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:27:54,168 INFO L129 PetriNetUnfolder]: 4929/10331 cut-off events. [2022-07-12 10:27:54,169 INFO L130 PetriNetUnfolder]: For 2189/2189 co-relation queries the response was YES. [2022-07-12 10:27:54,216 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. [2022-07-12 10:27:54,276 INFO L132 encePairwiseOnDemand]: 252/264 looper letters, 99 selfloop transitions, 14 changer transitions 4/277 dead transitions. [2022-07-12 10:27:54,277 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 277 transitions, 912 flow [2022-07-12 10:27:54,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 10:27:54,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-12 10:27:54,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1263 transitions. [2022-07-12 10:27:54,280 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7973484848484849 [2022-07-12 10:27:54,280 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1263 transitions. [2022-07-12 10:27:54,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1263 transitions. [2022-07-12 10:27:54,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:27:54,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1263 transitions. [2022-07-12 10:27:54,283 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) [2022-07-12 10:27:54,285 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) [2022-07-12 10:27:54,287 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) [2022-07-12 10:27:54,287 INFO L186 Difference]: Start difference. First operand has 218 places, 217 transitions, 499 flow. Second operand 6 states and 1263 transitions. [2022-07-12 10:27:54,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 277 transitions, 912 flow [2022-07-12 10:27:54,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 277 transitions, 902 flow, removed 5 selfloop flow, removed 2 redundant places. [2022-07-12 10:27:54,294 INFO L242 Difference]: Finished difference. Result has 223 places, 224 transitions, 588 flow [2022-07-12 10:27:54,295 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} [2022-07-12 10:27:54,296 INFO L279 CegarLoopForPetriNet]: 224 programPoint places, -1 predicate places. [2022-07-12 10:27:54,296 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 224 transitions, 588 flow [2022-07-12 10:27:54,297 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) [2022-07-12 10:27:54,297 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:27:54,297 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] [2022-07-12 10:27:54,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 10:27:54,297 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)] === [2022-07-12 10:27:54,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:27:54,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1073338544, now seen corresponding path program 1 times [2022-07-12 10:27:54,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:27:54,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325957028] [2022-07-12 10:27:54,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:27:54,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:27:54,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:27:54,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:27:54,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:27:54,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325957028] [2022-07-12 10:27:54,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325957028] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:27:54,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:27:54,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:27:54,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876771284] [2022-07-12 10:27:54,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:27:54,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:27:54,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:27:54,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:27:54,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:27:54,498 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 264 [2022-07-12 10:27:54,500 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) [2022-07-12 10:27:54,500 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:27:54,500 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 264 [2022-07-12 10:27:54,500 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:27:56,196 INFO L129 PetriNetUnfolder]: 6200/14218 cut-off events. [2022-07-12 10:27:56,196 INFO L130 PetriNetUnfolder]: For 6253/6253 co-relation queries the response was YES. [2022-07-12 10:27:56,251 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. [2022-07-12 10:27:56,315 INFO L132 encePairwiseOnDemand]: 254/264 looper letters, 136 selfloop transitions, 9 changer transitions 0/308 dead transitions. [2022-07-12 10:27:56,316 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 308 transitions, 1227 flow [2022-07-12 10:27:56,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 10:27:56,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-12 10:27:56,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1707 transitions. [2022-07-12 10:27:56,322 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8082386363636364 [2022-07-12 10:27:56,322 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1707 transitions. [2022-07-12 10:27:56,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1707 transitions. [2022-07-12 10:27:56,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:27:56,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1707 transitions. [2022-07-12 10:27:56,326 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) [2022-07-12 10:27:56,329 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) [2022-07-12 10:27:56,330 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) [2022-07-12 10:27:56,331 INFO L186 Difference]: Start difference. First operand has 223 places, 224 transitions, 588 flow. Second operand 8 states and 1707 transitions. [2022-07-12 10:27:56,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 308 transitions, 1227 flow [2022-07-12 10:27:56,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 308 transitions, 1215 flow, removed 6 selfloop flow, removed 2 redundant places. [2022-07-12 10:27:56,340 INFO L242 Difference]: Finished difference. Result has 231 places, 230 transitions, 657 flow [2022-07-12 10:27:56,341 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} [2022-07-12 10:27:56,341 INFO L279 CegarLoopForPetriNet]: 224 programPoint places, 7 predicate places. [2022-07-12 10:27:56,342 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 230 transitions, 657 flow [2022-07-12 10:27:56,342 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) [2022-07-12 10:27:56,342 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:27:56,343 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] [2022-07-12 10:27:56,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 10:27:56,343 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)] === [2022-07-12 10:27:56,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:27:56,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1596457134, now seen corresponding path program 1 times [2022-07-12 10:27:56,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:27:56,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420675863] [2022-07-12 10:27:56,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:27:56,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:27:56,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:27:56,451 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:27:56,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:27:56,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420675863] [2022-07-12 10:27:56,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420675863] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:27:56,452 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:27:56,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:27:56,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427218713] [2022-07-12 10:27:56,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:27:56,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:27:56,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:27:56,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:27:56,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:27:56,455 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 264 [2022-07-12 10:27:56,456 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) [2022-07-12 10:27:56,456 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:27:56,456 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 264 [2022-07-12 10:27:56,456 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:27:58,027 INFO L129 PetriNetUnfolder]: 5147/11865 cut-off events. [2022-07-12 10:27:58,027 INFO L130 PetriNetUnfolder]: For 7729/7729 co-relation queries the response was YES. [2022-07-12 10:27:58,069 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. [2022-07-12 10:27:58,112 INFO L132 encePairwiseOnDemand]: 256/264 looper letters, 63 selfloop transitions, 4 changer transitions 34/264 dead transitions. [2022-07-12 10:27:58,112 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 264 transitions, 970 flow [2022-07-12 10:27:58,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 10:27:58,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-12 10:27:58,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1479 transitions. [2022-07-12 10:27:58,115 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8003246753246753 [2022-07-12 10:27:58,115 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1479 transitions. [2022-07-12 10:27:58,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1479 transitions. [2022-07-12 10:27:58,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:27:58,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1479 transitions. [2022-07-12 10:27:58,118 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) [2022-07-12 10:27:58,120 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) [2022-07-12 10:27:58,120 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) [2022-07-12 10:27:58,121 INFO L186 Difference]: Start difference. First operand has 231 places, 230 transitions, 657 flow. Second operand 7 states and 1479 transitions. [2022-07-12 10:27:58,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 264 transitions, 970 flow [2022-07-12 10:27:58,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 264 transitions, 967 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-12 10:27:58,127 INFO L242 Difference]: Finished difference. Result has 237 places, 227 transitions, 640 flow [2022-07-12 10:27:58,128 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} [2022-07-12 10:27:58,129 INFO L279 CegarLoopForPetriNet]: 224 programPoint places, 13 predicate places. [2022-07-12 10:27:58,129 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 227 transitions, 640 flow [2022-07-12 10:27:58,129 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) [2022-07-12 10:27:58,129 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:27:58,130 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] [2022-07-12 10:27:58,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 10:27:58,130 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)] === [2022-07-12 10:27:58,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:27:58,130 INFO L85 PathProgramCache]: Analyzing trace with hash -830309589, now seen corresponding path program 1 times [2022-07-12 10:27:58,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:27:58,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171377805] [2022-07-12 10:27:58,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:27:58,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:27:58,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:27:58,297 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:27:58,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:27:58,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171377805] [2022-07-12 10:27:58,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171377805] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:27:58,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149391322] [2022-07-12 10:27:58,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:27:58,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:27:58,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:27:58,301 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) [2022-07-12 10:27:58,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 10:27:58,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:27:58,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-12 10:27:58,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:27:58,601 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:27:58,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:27:58,782 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:27:58,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149391322] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:27:58,782 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 10:27:58,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-07-12 10:27:58,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203365069] [2022-07-12 10:27:58,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 10:27:58,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-12 10:27:58,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:27:58,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-12 10:27:58,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2022-07-12 10:27:58,786 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 264 [2022-07-12 10:27:58,788 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) [2022-07-12 10:27:58,788 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:27:58,788 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 264 [2022-07-12 10:27:58,788 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:28:00,690 INFO L129 PetriNetUnfolder]: 6200/13789 cut-off events. [2022-07-12 10:28:00,691 INFO L130 PetriNetUnfolder]: For 10756/10756 co-relation queries the response was YES. [2022-07-12 10:28:00,785 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. [2022-07-12 10:28:00,856 INFO L132 encePairwiseOnDemand]: 248/264 looper letters, 136 selfloop transitions, 17 changer transitions 0/315 dead transitions. [2022-07-12 10:28:00,856 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 315 transitions, 1339 flow [2022-07-12 10:28:00,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 10:28:00,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-12 10:28:00,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2891 transitions. [2022-07-12 10:28:00,862 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7821969696969697 [2022-07-12 10:28:00,862 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2891 transitions. [2022-07-12 10:28:00,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2891 transitions. [2022-07-12 10:28:00,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:28:00,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2891 transitions. [2022-07-12 10:28:00,867 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) [2022-07-12 10:28:00,872 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) [2022-07-12 10:28:00,873 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) [2022-07-12 10:28:00,873 INFO L186 Difference]: Start difference. First operand has 237 places, 227 transitions, 640 flow. Second operand 14 states and 2891 transitions. [2022-07-12 10:28:00,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 315 transitions, 1339 flow [2022-07-12 10:28:00,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 315 transitions, 1307 flow, removed 12 selfloop flow, removed 7 redundant places. [2022-07-12 10:28:00,887 INFO L242 Difference]: Finished difference. Result has 245 places, 236 transitions, 735 flow [2022-07-12 10:28:00,888 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} [2022-07-12 10:28:00,888 INFO L279 CegarLoopForPetriNet]: 224 programPoint places, 21 predicate places. [2022-07-12 10:28:00,888 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 236 transitions, 735 flow [2022-07-12 10:28:00,890 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) [2022-07-12 10:28:00,890 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:28:00,890 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] [2022-07-12 10:28:00,908 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-12 10:28:01,108 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 [2022-07-12 10:28:01,110 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)] === [2022-07-12 10:28:01,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:28:01,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1988649675, now seen corresponding path program 1 times [2022-07-12 10:28:01,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:28:01,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65843118] [2022-07-12 10:28:01,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:28:01,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:28:01,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:28:01,284 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:28:01,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:28:01,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65843118] [2022-07-12 10:28:01,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65843118] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:28:01,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887886197] [2022-07-12 10:28:01,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:28:01,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:28:01,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:28:01,286 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) [2022-07-12 10:28:01,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 10:28:01,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:28:01,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-12 10:28:01,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:28:01,633 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:28:01,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:28:01,819 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:28:01,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887886197] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:28:01,820 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 10:28:01,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-07-12 10:28:01,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528977297] [2022-07-12 10:28:01,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 10:28:01,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:28:01,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:28:01,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:28:01,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:28:01,824 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 264 [2022-07-12 10:28:01,953 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) [2022-07-12 10:28:01,953 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:28:01,953 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 264 [2022-07-12 10:28:01,953 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:28:03,526 INFO L129 PetriNetUnfolder]: 4877/12051 cut-off events. [2022-07-12 10:28:03,527 INFO L130 PetriNetUnfolder]: For 10643/10643 co-relation queries the response was YES. [2022-07-12 10:28:03,579 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. [2022-07-12 10:28:03,637 INFO L132 encePairwiseOnDemand]: 248/264 looper letters, 93 selfloop transitions, 14 changer transitions 38/307 dead transitions. [2022-07-12 10:28:03,637 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 307 transitions, 1348 flow [2022-07-12 10:28:03,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 10:28:03,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-12 10:28:03,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2885 transitions. [2022-07-12 10:28:03,642 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7805735930735931 [2022-07-12 10:28:03,643 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2885 transitions. [2022-07-12 10:28:03,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2885 transitions. [2022-07-12 10:28:03,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:28:03,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2885 transitions. [2022-07-12 10:28:03,648 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) [2022-07-12 10:28:03,652 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) [2022-07-12 10:28:03,653 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) [2022-07-12 10:28:03,654 INFO L186 Difference]: Start difference. First operand has 245 places, 236 transitions, 735 flow. Second operand 14 states and 2885 transitions. [2022-07-12 10:28:03,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 307 transitions, 1348 flow [2022-07-12 10:28:03,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 307 transitions, 1331 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-07-12 10:28:03,662 INFO L242 Difference]: Finished difference. Result has 257 places, 233 transitions, 729 flow [2022-07-12 10:28:03,663 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} [2022-07-12 10:28:03,663 INFO L279 CegarLoopForPetriNet]: 224 programPoint places, 33 predicate places. [2022-07-12 10:28:03,663 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 233 transitions, 729 flow [2022-07-12 10:28:03,665 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) [2022-07-12 10:28:03,665 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:28:03,665 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] [2022-07-12 10:28:03,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 10:28:03,883 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 [2022-07-12 10:28:03,884 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)] === [2022-07-12 10:28:03,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:28:03,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1697452556, now seen corresponding path program 2 times [2022-07-12 10:28:03,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:28:03,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078889366] [2022-07-12 10:28:03,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:28:03,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:28:03,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:28:04,079 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-12 10:28:04,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:28:04,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078889366] [2022-07-12 10:28:04,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078889366] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:28:04,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105527403] [2022-07-12 10:28:04,080 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 10:28:04,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:28:04,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:28:04,082 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) [2022-07-12 10:28:04,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 10:28:04,222 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 10:28:04,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:28:04,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-12 10:28:04,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:28:04,451 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-12 10:28:04,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:28:04,648 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-12 10:28:04,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105527403] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-12 10:28:04,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-12 10:28:04,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 9] total 18 [2022-07-12 10:28:04,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315075781] [2022-07-12 10:28:04,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:28:04,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 10:28:04,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:28:04,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 10:28:04,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:28:04,651 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 264 [2022-07-12 10:28:04,653 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) [2022-07-12 10:28:04,653 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:28:04,653 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 264 [2022-07-12 10:28:04,653 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:28:05,653 INFO L129 PetriNetUnfolder]: 3360/7807 cut-off events. [2022-07-12 10:28:05,653 INFO L130 PetriNetUnfolder]: For 10666/10666 co-relation queries the response was YES. [2022-07-12 10:28:05,706 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. [2022-07-12 10:28:05,746 INFO L132 encePairwiseOnDemand]: 252/264 looper letters, 85 selfloop transitions, 11 changer transitions 0/258 dead transitions. [2022-07-12 10:28:05,746 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 258 transitions, 1056 flow [2022-07-12 10:28:05,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 10:28:05,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-12 10:28:05,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2053 transitions. [2022-07-12 10:28:05,750 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7776515151515152 [2022-07-12 10:28:05,750 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2053 transitions. [2022-07-12 10:28:05,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2053 transitions. [2022-07-12 10:28:05,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:28:05,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2053 transitions. [2022-07-12 10:28:05,754 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) [2022-07-12 10:28:05,759 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) [2022-07-12 10:28:05,760 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) [2022-07-12 10:28:05,760 INFO L186 Difference]: Start difference. First operand has 257 places, 233 transitions, 729 flow. Second operand 10 states and 2053 transitions. [2022-07-12 10:28:05,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 258 transitions, 1056 flow [2022-07-12 10:28:05,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 258 transitions, 992 flow, removed 19 selfloop flow, removed 15 redundant places. [2022-07-12 10:28:05,773 INFO L242 Difference]: Finished difference. Result has 249 places, 236 transitions, 731 flow [2022-07-12 10:28:05,773 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} [2022-07-12 10:28:05,776 INFO L279 CegarLoopForPetriNet]: 224 programPoint places, 25 predicate places. [2022-07-12 10:28:05,776 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 236 transitions, 731 flow [2022-07-12 10:28:05,778 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) [2022-07-12 10:28:05,778 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:28:05,778 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] [2022-07-12 10:28:05,796 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-12 10:28:05,978 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 [2022-07-12 10:28:05,979 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)] === [2022-07-12 10:28:05,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:28:05,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1013384774, now seen corresponding path program 2 times [2022-07-12 10:28:05,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:28:05,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7428329] [2022-07-12 10:28:05,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:28:05,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:28:06,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:28:06,102 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-12 10:28:06,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:28:06,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7428329] [2022-07-12 10:28:06,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7428329] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:28:06,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139950945] [2022-07-12 10:28:06,103 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 10:28:06,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:28:06,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:28:06,104 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) [2022-07-12 10:28:06,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-12 10:28:06,246 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 10:28:06,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:28:06,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-12 10:28:06,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:28:06,444 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-12 10:28:06,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:28:06,669 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-12 10:28:06,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139950945] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-12 10:28:06,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-12 10:28:06,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 9] total 18 [2022-07-12 10:28:06,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412964540] [2022-07-12 10:28:06,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:28:06,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 10:28:06,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:28:06,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 10:28:06,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:28:06,674 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 264 [2022-07-12 10:28:06,675 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) [2022-07-12 10:28:06,675 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:28:06,676 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 264 [2022-07-12 10:28:06,676 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:28:07,556 INFO L129 PetriNetUnfolder]: 2541/5996 cut-off events. [2022-07-12 10:28:07,557 INFO L130 PetriNetUnfolder]: For 6635/6635 co-relation queries the response was YES. [2022-07-12 10:28:07,594 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. [2022-07-12 10:28:07,624 INFO L132 encePairwiseOnDemand]: 252/264 looper letters, 89 selfloop transitions, 11 changer transitions 0/262 dead transitions. [2022-07-12 10:28:07,624 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 262 transitions, 1063 flow [2022-07-12 10:28:07,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 10:28:07,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-12 10:28:07,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2053 transitions. [2022-07-12 10:28:07,628 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7776515151515152 [2022-07-12 10:28:07,628 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2053 transitions. [2022-07-12 10:28:07,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2053 transitions. [2022-07-12 10:28:07,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:28:07,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2053 transitions. [2022-07-12 10:28:07,632 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) [2022-07-12 10:28:07,635 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) [2022-07-12 10:28:07,636 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) [2022-07-12 10:28:07,636 INFO L186 Difference]: Start difference. First operand has 249 places, 236 transitions, 731 flow. Second operand 10 states and 2053 transitions. [2022-07-12 10:28:07,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 262 transitions, 1063 flow [2022-07-12 10:28:07,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 262 transitions, 1030 flow, removed 7 selfloop flow, removed 7 redundant places. [2022-07-12 10:28:07,646 INFO L242 Difference]: Finished difference. Result has 252 places, 238 transitions, 747 flow [2022-07-12 10:28:07,646 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} [2022-07-12 10:28:07,647 INFO L279 CegarLoopForPetriNet]: 224 programPoint places, 28 predicate places. [2022-07-12 10:28:07,647 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 238 transitions, 747 flow [2022-07-12 10:28:07,648 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) [2022-07-12 10:28:07,648 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:28:07,648 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] [2022-07-12 10:28:07,666 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-12 10:28:07,863 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 [2022-07-12 10:28:07,863 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)] === [2022-07-12 10:28:07,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:28:07,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1766561699, now seen corresponding path program 1 times [2022-07-12 10:28:07,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:28:07,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925808803] [2022-07-12 10:28:07,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:28:07,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:28:07,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:28:08,399 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-12 10:28:08,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:28:08,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925808803] [2022-07-12 10:28:08,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925808803] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:28:08,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560331802] [2022-07-12 10:28:08,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:28:08,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:28:08,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:28:08,401 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) [2022-07-12 10:28:08,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-12 10:28:08,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:28:08,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 64 conjunts are in the unsatisfiable core [2022-07-12 10:28:08,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:28:08,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:28:08,884 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 [2022-07-12 10:28:08,922 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 [2022-07-12 10:28:09,069 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 10:28:09,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:28:09,247 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 [2022-07-12 10:28:09,284 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 [2022-07-12 10:28:11,325 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((|v_thread1Thread1of1ForFork3_~#t2~0.base_26| Int)) (or (not (< |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork3_~#t2~0.base_26|)) (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))))) (forall ((|v_thread1Thread1of1ForFork3_~#t2~0.base_26| Int)) (or (not (< |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork3_~#t2~0.base_26|)) (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))))))) is different from false [2022-07-12 10:28:11,445 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((|v_thread1Thread1of1ForFork3_~#t2~0.base_26| Int)) (or (not (< |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork3_~#t2~0.base_26|)) (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)))))) (forall ((|v_thread1Thread1of1ForFork3_~#t2~0.base_26| Int)) (or (not (< |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork3_~#t2~0.base_26|)) (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)))))) is different from false [2022-07-12 10:28:11,463 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 10:28:11,464 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 48 treesize of output 39 [2022-07-12 10:28:11,467 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 [2022-07-12 10:28:11,483 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 10:28:11,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:28:11,486 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 5 [2022-07-12 10:28:11,707 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 1 not checked. [2022-07-12 10:28:11,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560331802] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:28:11,708 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 10:28:11,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19, 17] total 42 [2022-07-12 10:28:11,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543782173] [2022-07-12 10:28:11,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 10:28:11,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-07-12 10:28:11,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:28:11,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-07-12 10:28:11,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1286, Unknown=4, NotChecked=300, Total=1722 [2022-07-12 10:28:11,712 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 264 [2022-07-12 10:28:11,715 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) [2022-07-12 10:28:11,715 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:28:11,715 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 264 [2022-07-12 10:28:11,715 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:28:14,227 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((|v_thread1Thread1of1ForFork3_~#t2~0.base_26| Int)) (or (not (< |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork3_~#t2~0.base_26|)) (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)))))) (<= 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|) (= 0 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) (forall ((|v_thread1Thread1of1ForFork3_~#t2~0.base_26| Int)) (or (not (< |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork3_~#t2~0.base_26|)) (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))))) (<= 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 [2022-07-12 10:28:16,261 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|) (<= .cse0 c_~s_6~0) (forall ((|v_thread1Thread1of1ForFork3_~#t2~0.base_26| Int)) (or (not (< |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork3_~#t2~0.base_26|)) (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))))) (<= c_~s_6~0 .cse0) (forall ((|v_thread1Thread1of1ForFork3_~#t2~0.base_26| Int)) (or (not (< |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork3_~#t2~0.base_26|)) (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)))))) (<= c_~i_7~0 1) (= c_~X_0~0.offset 0))) is different from false [2022-07-12 10:28:18,284 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((|v_thread1Thread1of1ForFork3_~#t2~0.base_26| Int)) (or (not (< |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork3_~#t2~0.base_26|)) (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)))))) (<= 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) (< c_~s_2~0 (+ c_~s_6~0 1)) (= 0 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) (forall ((|v_thread1Thread1of1ForFork3_~#t2~0.base_26| Int)) (or (not (< |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork3_~#t2~0.base_26|)) (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))))) (<= 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 [2022-07-12 10:28:28,667 INFO L129 PetriNetUnfolder]: 51475/83129 cut-off events. [2022-07-12 10:28:28,667 INFO L130 PetriNetUnfolder]: For 110645/110645 co-relation queries the response was YES. [2022-07-12 10:28:29,251 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. [2022-07-12 10:28:29,663 INFO L132 encePairwiseOnDemand]: 213/264 looper letters, 316 selfloop transitions, 226 changer transitions 4/657 dead transitions. [2022-07-12 10:28:29,664 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 657 transitions, 3731 flow [2022-07-12 10:28:29,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-12 10:28:29,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-07-12 10:28:29,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4397 transitions. [2022-07-12 10:28:29,671 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5948322510822511 [2022-07-12 10:28:29,671 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4397 transitions. [2022-07-12 10:28:29,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4397 transitions. [2022-07-12 10:28:29,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:28:29,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4397 transitions. [2022-07-12 10:28:29,680 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) [2022-07-12 10:28:29,689 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) [2022-07-12 10:28:29,690 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) [2022-07-12 10:28:29,690 INFO L186 Difference]: Start difference. First operand has 252 places, 238 transitions, 747 flow. Second operand 28 states and 4397 transitions. [2022-07-12 10:28:29,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 657 transitions, 3731 flow [2022-07-12 10:28:29,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 657 transitions, 3644 flow, removed 21 selfloop flow, removed 8 redundant places. [2022-07-12 10:28:29,797 INFO L242 Difference]: Finished difference. Result has 285 places, 478 transitions, 2781 flow [2022-07-12 10:28:29,798 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} [2022-07-12 10:28:29,800 INFO L279 CegarLoopForPetriNet]: 224 programPoint places, 61 predicate places. [2022-07-12 10:28:29,800 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 478 transitions, 2781 flow [2022-07-12 10:28:29,802 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) [2022-07-12 10:28:29,802 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:28:29,802 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] [2022-07-12 10:28:29,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-12 10:28:30,020 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 [2022-07-12 10:28:30,021 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)] === [2022-07-12 10:28:30,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:28:30,021 INFO L85 PathProgramCache]: Analyzing trace with hash -2032663489, now seen corresponding path program 2 times [2022-07-12 10:28:30,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:28:30,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555471739] [2022-07-12 10:28:30,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:28:30,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:28:30,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:28:30,477 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-12 10:28:30,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:28:30,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555471739] [2022-07-12 10:28:30,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555471739] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:28:30,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774876626] [2022-07-12 10:28:30,477 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 10:28:30,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:28:30,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:28:30,479 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) [2022-07-12 10:28:30,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-12 10:28:30,628 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 10:28:30,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:28:30,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 70 conjunts are in the unsatisfiable core [2022-07-12 10:28:30,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:28:31,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:28:31,424 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 [2022-07-12 10:28:31,498 INFO L356 Elim1Store]: treesize reduction 11, result has 21.4 percent of original size [2022-07-12 10:28:31,498 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 [2022-07-12 10:28:31,608 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:28:31,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:28:31,797 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 [2022-07-12 10:28:31,811 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 [2022-07-12 10:28:32,045 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 10:28:32,045 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 [2022-07-12 10:28:32,049 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 [2022-07-12 10:28:32,059 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 10:28:32,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:28:32,061 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 [2022-07-12 10:28:32,950 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:28:32,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774876626] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:28:32,951 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 10:28:32,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 24, 24] total 55 [2022-07-12 10:28:32,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268408206] [2022-07-12 10:28:32,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 10:28:32,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-07-12 10:28:32,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:28:32,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-07-12 10:28:32,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=2558, Unknown=3, NotChecked=206, Total=2970 [2022-07-12 10:28:32,956 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 264 [2022-07-12 10:28:32,960 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) [2022-07-12 10:28:32,960 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:28:32,960 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 264 [2022-07-12 10:28:32,960 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand