./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-bad-ring-nondet.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d 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 ../../../trunk/examples/svcomp/weaver/popl20-bad-ring-nondet.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-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 ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5fedede1a0cf545b0a275694256164e3eb4f49b22c80042adac647157728b27d --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 15:21:54,401 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 15:21:54,404 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 15:21:54,451 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 15:21:54,453 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 15:21:54,456 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 15:21:54,459 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 15:21:54,461 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 15:21:54,463 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 15:21:54,468 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 15:21:54,469 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 15:21:54,471 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 15:21:54,472 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 15:21:54,474 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 15:21:54,476 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 15:21:54,480 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 15:21:54,484 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 15:21:54,485 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 15:21:54,488 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 15:21:54,489 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 15:21:54,503 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 15:21:54,504 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 15:21:54,505 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 15:21:54,505 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 15:21:54,512 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 15:21:54,514 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 15:21:54,514 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 15:21:54,515 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 15:21:54,516 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 15:21:54,517 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 15:21:54,518 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 15:21:54,520 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 15:21:54,522 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 15:21:54,523 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 15:21:54,524 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 15:21:54,524 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 15:21:54,525 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 15:21:54,525 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 15:21:54,525 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 15:21:54,526 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 15:21:54,526 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 15:21:54,528 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 15:21:54,562 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 15:21:54,562 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 15:21:54,563 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 15:21:54,563 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 15:21:54,564 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 15:21:54,564 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 15:21:54,565 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 15:21:54,565 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 15:21:54,565 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 15:21:54,566 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 15:21:54,566 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 15:21:54,567 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 15:21:54,567 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 15:21:54,567 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 15:21:54,567 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 15:21:54,567 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 15:21:54,568 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 15:21:54,568 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 15:21:54,568 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 15:21:54,568 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 15:21:54,568 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 15:21:54,568 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 15:21:54,569 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 15:21:54,569 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 15:21:54,569 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 15:21:54,569 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 15:21:54,569 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:21:54,570 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 15:21:54,570 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 15:21:54,570 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 15:21:54,570 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 15:21:54,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 15:21:54,571 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 15:21:54,571 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 15:21:54,571 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 15:21:54,571 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 15:21:54,571 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 15:21:54,572 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5fedede1a0cf545b0a275694256164e3eb4f49b22c80042adac647157728b27d Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 15:21:54,849 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 15:21:54,868 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 15:21:54,870 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 15:21:54,871 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 15:21:54,872 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 15:21:54,873 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-ring-nondet.wvr.c [2023-08-30 15:21:55,948 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 15:21:56,142 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 15:21:56,143 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-ring-nondet.wvr.c [2023-08-30 15:21:56,153 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac275fa84/413a6d038890458ea63a7ff8e438672c/FLAGccc247c63 [2023-08-30 15:21:56,164 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac275fa84/413a6d038890458ea63a7ff8e438672c [2023-08-30 15:21:56,167 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 15:21:56,168 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 15:21:56,171 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 15:21:56,171 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 15:21:56,178 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 15:21:56,179 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:21:56" (1/1) ... [2023-08-30 15:21:56,180 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ded2c6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:21:56, skipping insertion in model container [2023-08-30 15:21:56,181 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:21:56" (1/1) ... [2023-08-30 15:21:56,185 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 15:21:56,209 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 15:21:56,374 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-ring-nondet.wvr.c[4085,4098] [2023-08-30 15:21:56,389 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:21:56,404 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 15:21:56,447 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-ring-nondet.wvr.c[4085,4098] [2023-08-30 15:21:56,459 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:21:56,468 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 15:21:56,468 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 15:21:56,474 INFO L208 MainTranslator]: Completed translation [2023-08-30 15:21:56,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:21:56 WrapperNode [2023-08-30 15:21:56,474 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 15:21:56,475 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 15:21:56,475 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 15:21:56,476 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 15:21:56,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:21:56" (1/1) ... [2023-08-30 15:21:56,499 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:21:56" (1/1) ... [2023-08-30 15:21:56,540 INFO L138 Inliner]: procedures = 25, calls = 63, calls flagged for inlining = 16, calls inlined = 20, statements flattened = 359 [2023-08-30 15:21:56,543 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 15:21:56,543 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 15:21:56,544 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 15:21:56,544 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 15:21:56,558 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:21:56" (1/1) ... [2023-08-30 15:21:56,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:21:56" (1/1) ... [2023-08-30 15:21:56,571 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:21:56" (1/1) ... [2023-08-30 15:21:56,575 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:21:56" (1/1) ... [2023-08-30 15:21:56,583 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:21:56" (1/1) ... [2023-08-30 15:21:56,587 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:21:56" (1/1) ... [2023-08-30 15:21:56,589 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:21:56" (1/1) ... [2023-08-30 15:21:56,590 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:21:56" (1/1) ... [2023-08-30 15:21:56,593 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 15:21:56,594 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 15:21:56,594 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 15:21:56,594 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 15:21:56,594 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:21:56" (1/1) ... [2023-08-30 15:21:56,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:21:56,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:21:56,634 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) [2023-08-30 15:21:56,673 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 [2023-08-30 15:21:56,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 15:21:56,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 15:21:56,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 15:21:56,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 15:21:56,676 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 15:21:56,676 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 15:21:56,676 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 15:21:56,676 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 15:21:56,676 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 15:21:56,676 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 15:21:56,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 15:21:56,677 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 15:21:56,677 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 15:21:56,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 15:21:56,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 15:21:56,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 15:21:56,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 15:21:56,679 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 15:21:56,841 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 15:21:56,843 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 15:21:57,327 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 15:21:57,571 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 15:21:57,571 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-30 15:21:57,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:21:57 BoogieIcfgContainer [2023-08-30 15:21:57,575 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 15:21:57,577 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 15:21:57,577 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 15:21:57,580 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 15:21:57,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 03:21:56" (1/3) ... [2023-08-30 15:21:57,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@280314fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:21:57, skipping insertion in model container [2023-08-30 15:21:57,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:21:56" (2/3) ... [2023-08-30 15:21:57,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@280314fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:21:57, skipping insertion in model container [2023-08-30 15:21:57,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:21:57" (3/3) ... [2023-08-30 15:21:57,583 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-ring-nondet.wvr.c [2023-08-30 15:21:57,590 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 15:21:57,598 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 15:21:57,598 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2023-08-30 15:21:57,598 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 15:21:57,729 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 15:21:57,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 291 places, 306 transitions, 636 flow [2023-08-30 15:21:57,906 INFO L130 PetriNetUnfolder]: 25/303 cut-off events. [2023-08-30 15:21:57,907 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 15:21:57,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 303 events. 25/303 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 386 event pairs, 0 based on Foata normal form. 0/246 useless extension candidates. Maximal degree in co-relation 257. Up to 4 conditions per place. [2023-08-30 15:21:57,915 INFO L82 GeneralOperation]: Start removeDead. Operand has 291 places, 306 transitions, 636 flow [2023-08-30 15:21:57,923 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 271 places, 285 transitions, 585 flow [2023-08-30 15:21:57,926 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 15:21:57,946 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 271 places, 285 transitions, 585 flow [2023-08-30 15:21:57,952 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 271 places, 285 transitions, 585 flow [2023-08-30 15:21:57,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 271 places, 285 transitions, 585 flow [2023-08-30 15:21:58,006 INFO L130 PetriNetUnfolder]: 24/285 cut-off events. [2023-08-30 15:21:58,007 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 15:21:58,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 297 conditions, 285 events. 24/285 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 383 event pairs, 0 based on Foata normal form. 0/229 useless extension candidates. Maximal degree in co-relation 257. Up to 4 conditions per place. [2023-08-30 15:21:58,014 INFO L119 LiptonReduction]: Number of co-enabled transitions 6140 [2023-08-30 15:22:09,826 INFO L134 LiptonReduction]: Checked pairs total: 20631 [2023-08-30 15:22:09,827 INFO L136 LiptonReduction]: Total number of compositions: 312 [2023-08-30 15:22:09,838 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 15:22:09,844 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4c72003b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 15:22:09,844 INFO L358 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2023-08-30 15:22:09,847 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 15:22:09,847 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 15:22:09,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:22:09,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 15:22:09,848 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-30 15:22:09,852 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:22:09,852 INFO L85 PathProgramCache]: Analyzing trace with hash 46041, now seen corresponding path program 1 times [2023-08-30 15:22:09,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:22:09,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600830411] [2023-08-30 15:22:09,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:22:09,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:22:10,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:22:10,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:22:10,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:22:10,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600830411] [2023-08-30 15:22:10,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600830411] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:22:10,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:22:10,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:22:10,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922112086] [2023-08-30 15:22:10,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:22:10,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:22:10,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:22:10,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:22:10,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:22:10,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 618 [2023-08-30 15:22:10,260 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 67 transitions, 149 flow. Second operand has 3 states, 3 states have (on average 244.66666666666666) internal successors, (734), 3 states have internal predecessors, (734), 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) [2023-08-30 15:22:10,261 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:22:10,261 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 618 [2023-08-30 15:22:10,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:22:12,887 INFO L130 PetriNetUnfolder]: 16911/23581 cut-off events. [2023-08-30 15:22:12,887 INFO L131 PetriNetUnfolder]: For 848/848 co-relation queries the response was YES. [2023-08-30 15:22:12,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48007 conditions, 23581 events. 16911/23581 cut-off events. For 848/848 co-relation queries the response was YES. Maximal size of possible extension queue 1276. Compared 135456 event pairs, 14314 based on Foata normal form. 0/9865 useless extension candidates. Maximal degree in co-relation 22588. Up to 11795 conditions per place. [2023-08-30 15:22:13,035 INFO L137 encePairwiseOnDemand]: 598/618 looper letters, 105 selfloop transitions, 6 changer transitions 0/111 dead transitions. [2023-08-30 15:22:13,037 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 111 transitions, 474 flow [2023-08-30 15:22:13,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:22:13,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:22:13,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 865 transitions. [2023-08-30 15:22:13,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4665587918015103 [2023-08-30 15:22:13,053 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 865 transitions. [2023-08-30 15:22:13,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 865 transitions. [2023-08-30 15:22:13,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:22:13,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 865 transitions. [2023-08-30 15:22:13,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 288.3333333333333) internal successors, (865), 3 states have internal predecessors, (865), 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) [2023-08-30 15:22:13,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 618.0) internal successors, (2472), 4 states have internal predecessors, (2472), 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) [2023-08-30 15:22:13,071 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 618.0) internal successors, (2472), 4 states have internal predecessors, (2472), 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) [2023-08-30 15:22:13,073 INFO L175 Difference]: Start difference. First operand has 67 places, 67 transitions, 149 flow. Second operand 3 states and 865 transitions. [2023-08-30 15:22:13,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 111 transitions, 474 flow [2023-08-30 15:22:13,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 111 transitions, 456 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 15:22:13,090 INFO L231 Difference]: Finished difference. Result has 60 places, 64 transitions, 180 flow [2023-08-30 15:22:13,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=618, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=60, PETRI_TRANSITIONS=64} [2023-08-30 15:22:13,094 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -7 predicate places. [2023-08-30 15:22:13,095 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 64 transitions, 180 flow [2023-08-30 15:22:13,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 244.66666666666666) internal successors, (734), 3 states have internal predecessors, (734), 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) [2023-08-30 15:22:13,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:22:13,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 15:22:13,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 15:22:13,096 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-30 15:22:13,097 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:22:13,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1428610, now seen corresponding path program 1 times [2023-08-30 15:22:13,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:22:13,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184318501] [2023-08-30 15:22:13,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:22:13,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:22:13,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:22:13,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:22:13,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:22:13,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184318501] [2023-08-30 15:22:13,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184318501] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:22:13,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848638598] [2023-08-30 15:22:13,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:22:13,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:22:13,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:22:13,225 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) [2023-08-30 15:22:13,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 15:22:13,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:22:13,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:22:13,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:22:13,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:22:13,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:22:13,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:22:13,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848638598] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:22:13,366 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:22:13,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2023-08-30 15:22:13,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999945623] [2023-08-30 15:22:13,367 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:22:13,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 15:22:13,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:22:13,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 15:22:13,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-30 15:22:13,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 618 [2023-08-30 15:22:13,428 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 64 transitions, 180 flow. Second operand has 6 states, 6 states have (on average 245.0) internal successors, (1470), 6 states have internal predecessors, (1470), 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) [2023-08-30 15:22:13,428 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:22:13,429 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 618 [2023-08-30 15:22:13,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:22:18,144 INFO L130 PetriNetUnfolder]: 42285/58951 cut-off events. [2023-08-30 15:22:18,145 INFO L131 PetriNetUnfolder]: For 450/450 co-relation queries the response was YES. [2023-08-30 15:22:18,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119434 conditions, 58951 events. 42285/58951 cut-off events. For 450/450 co-relation queries the response was YES. Maximal size of possible extension queue 2808. Compared 379462 event pairs, 35785 based on Foata normal form. 0/24676 useless extension candidates. Maximal degree in co-relation 95463. Up to 11805 conditions per place. [2023-08-30 15:22:18,437 INFO L137 encePairwiseOnDemand]: 606/618 looper letters, 243 selfloop transitions, 33 changer transitions 0/276 dead transitions. [2023-08-30 15:22:18,438 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 276 transitions, 1240 flow [2023-08-30 15:22:18,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 15:22:18,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 15:22:18,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1749 transitions. [2023-08-30 15:22:18,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4716828478964401 [2023-08-30 15:22:18,443 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1749 transitions. [2023-08-30 15:22:18,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1749 transitions. [2023-08-30 15:22:18,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:22:18,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1749 transitions. [2023-08-30 15:22:18,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 291.5) internal successors, (1749), 6 states have internal predecessors, (1749), 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) [2023-08-30 15:22:18,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 618.0) internal successors, (4326), 7 states have internal predecessors, (4326), 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) [2023-08-30 15:22:18,457 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 618.0) internal successors, (4326), 7 states have internal predecessors, (4326), 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) [2023-08-30 15:22:18,457 INFO L175 Difference]: Start difference. First operand has 60 places, 64 transitions, 180 flow. Second operand 6 states and 1749 transitions. [2023-08-30 15:22:18,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 276 transitions, 1240 flow [2023-08-30 15:22:18,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 276 transitions, 1216 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:22:18,466 INFO L231 Difference]: Finished difference. Result has 66 places, 88 transitions, 387 flow [2023-08-30 15:22:18,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=618, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=387, PETRI_PLACES=66, PETRI_TRANSITIONS=88} [2023-08-30 15:22:18,467 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -1 predicate places. [2023-08-30 15:22:18,467 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 88 transitions, 387 flow [2023-08-30 15:22:18,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 245.0) internal successors, (1470), 6 states have internal predecessors, (1470), 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) [2023-08-30 15:22:18,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:22:18,469 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-08-30 15:22:18,478 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 15:22:18,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:22:18,674 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-30 15:22:18,675 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:22:18,675 INFO L85 PathProgramCache]: Analyzing trace with hash 44288250, now seen corresponding path program 1 times [2023-08-30 15:22:18,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:22:18,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208525975] [2023-08-30 15:22:18,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:22:18,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:22:18,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:22:18,743 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:22:18,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:22:18,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208525975] [2023-08-30 15:22:18,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208525975] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:22:18,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:22:18,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:22:18,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282132845] [2023-08-30 15:22:18,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:22:18,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:22:18,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:22:18,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:22:18,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:22:18,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 618 [2023-08-30 15:22:18,776 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 88 transitions, 387 flow. Second operand has 3 states, 3 states have (on average 245.33333333333334) internal successors, (736), 3 states have internal predecessors, (736), 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) [2023-08-30 15:22:18,777 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:22:18,777 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 618 [2023-08-30 15:22:18,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:22:22,804 INFO L130 PetriNetUnfolder]: 42276/58939 cut-off events. [2023-08-30 15:22:22,805 INFO L131 PetriNetUnfolder]: For 455/455 co-relation queries the response was YES. [2023-08-30 15:22:22,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119437 conditions, 58939 events. 42276/58939 cut-off events. For 455/455 co-relation queries the response was YES. Maximal size of possible extension queue 2845. Compared 379467 event pairs, 35785 based on Foata normal form. 2/24677 useless extension candidates. Maximal degree in co-relation 71634. Up to 58939 conditions per place. [2023-08-30 15:22:23,044 INFO L137 encePairwiseOnDemand]: 614/618 looper letters, 75 selfloop transitions, 1 changer transitions 0/76 dead transitions. [2023-08-30 15:22:23,045 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 76 transitions, 458 flow [2023-08-30 15:22:23,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:22:23,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:22:23,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 791 transitions. [2023-08-30 15:22:23,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4266450916936354 [2023-08-30 15:22:23,049 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 791 transitions. [2023-08-30 15:22:23,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 791 transitions. [2023-08-30 15:22:23,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:22:23,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 791 transitions. [2023-08-30 15:22:23,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 263.6666666666667) internal successors, (791), 3 states have internal predecessors, (791), 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) [2023-08-30 15:22:23,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 618.0) internal successors, (2472), 4 states have internal predecessors, (2472), 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) [2023-08-30 15:22:23,055 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 618.0) internal successors, (2472), 4 states have internal predecessors, (2472), 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) [2023-08-30 15:22:23,056 INFO L175 Difference]: Start difference. First operand has 66 places, 88 transitions, 387 flow. Second operand 3 states and 791 transitions. [2023-08-30 15:22:23,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 76 transitions, 458 flow [2023-08-30 15:22:23,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 76 transitions, 428 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-08-30 15:22:23,059 INFO L231 Difference]: Finished difference. Result has 64 places, 76 transitions, 278 flow [2023-08-30 15:22:23,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=618, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=278, PETRI_PLACES=64, PETRI_TRANSITIONS=76} [2023-08-30 15:22:23,061 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -3 predicate places. [2023-08-30 15:22:23,061 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 76 transitions, 278 flow [2023-08-30 15:22:23,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 245.33333333333334) internal successors, (736), 3 states have internal predecessors, (736), 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) [2023-08-30 15:22:23,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:22:23,062 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 15:22:23,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 15:22:23,062 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-30 15:22:23,063 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:22:23,063 INFO L85 PathProgramCache]: Analyzing trace with hash -388622823, now seen corresponding path program 2 times [2023-08-30 15:22:23,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:22:23,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918532099] [2023-08-30 15:22:23,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:22:23,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:22:23,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:22:23,205 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:22:23,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:22:23,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918532099] [2023-08-30 15:22:23,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918532099] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:22:23,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328039650] [2023-08-30 15:22:23,208 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:22:23,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:22:23,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:22:23,213 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) [2023-08-30 15:22:23,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 15:22:23,307 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 15:22:23,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:22:23,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 15:22:23,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:22:23,323 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 15:22:23,323 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:22:23,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328039650] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:22:23,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:22:23,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 15:22:23,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75708531] [2023-08-30 15:22:23,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:22:23,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:22:23,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:22:23,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:22:23,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 15:22:23,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 618 [2023-08-30 15:22:23,356 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 76 transitions, 278 flow. Second operand has 3 states, 3 states have (on average 248.0) internal successors, (744), 3 states have internal predecessors, (744), 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) [2023-08-30 15:22:23,356 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:22:23,356 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 618 [2023-08-30 15:22:23,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:22:27,317 INFO L130 PetriNetUnfolder]: 42276/58938 cut-off events. [2023-08-30 15:22:27,318 INFO L131 PetriNetUnfolder]: For 459/459 co-relation queries the response was YES. [2023-08-30 15:22:27,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119415 conditions, 58938 events. 42276/58938 cut-off events. For 459/459 co-relation queries the response was YES. Maximal size of possible extension queue 2846. Compared 379540 event pairs, 35785 based on Foata normal form. 1/24677 useless extension candidates. Maximal degree in co-relation 119403. Up to 58933 conditions per place. [2023-08-30 15:22:27,608 INFO L137 encePairwiseOnDemand]: 615/618 looper letters, 69 selfloop transitions, 6 changer transitions 0/75 dead transitions. [2023-08-30 15:22:27,608 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 75 transitions, 418 flow [2023-08-30 15:22:27,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:22:27,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:22:27,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 797 transitions. [2023-08-30 15:22:27,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4298813376483279 [2023-08-30 15:22:27,611 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 797 transitions. [2023-08-30 15:22:27,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 797 transitions. [2023-08-30 15:22:27,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:22:27,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 797 transitions. [2023-08-30 15:22:27,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 265.6666666666667) internal successors, (797), 3 states have internal predecessors, (797), 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) [2023-08-30 15:22:27,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 618.0) internal successors, (2472), 4 states have internal predecessors, (2472), 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) [2023-08-30 15:22:27,619 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 618.0) internal successors, (2472), 4 states have internal predecessors, (2472), 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) [2023-08-30 15:22:27,619 INFO L175 Difference]: Start difference. First operand has 64 places, 76 transitions, 278 flow. Second operand 3 states and 797 transitions. [2023-08-30 15:22:27,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 75 transitions, 418 flow [2023-08-30 15:22:27,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 75 transitions, 417 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:22:27,621 INFO L231 Difference]: Finished difference. Result has 64 places, 75 transitions, 279 flow [2023-08-30 15:22:27,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=618, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=279, PETRI_PLACES=64, PETRI_TRANSITIONS=75} [2023-08-30 15:22:27,622 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -3 predicate places. [2023-08-30 15:22:27,623 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 75 transitions, 279 flow [2023-08-30 15:22:27,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 248.0) internal successors, (744), 3 states have internal predecessors, (744), 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) [2023-08-30 15:22:27,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:22:27,624 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:22:27,632 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 15:22:27,828 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,SelfDestructingSolverStorable3 [2023-08-30 15:22:27,829 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-30 15:22:27,829 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:22:27,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1816291730, now seen corresponding path program 1 times [2023-08-30 15:22:27,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:22:27,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799481543] [2023-08-30 15:22:27,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:22:27,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:22:27,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:22:27,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:22:27,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:22:27,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799481543] [2023-08-30 15:22:27,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799481543] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:22:27,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:22:27,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:22:27,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104988865] [2023-08-30 15:22:27,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:22:27,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:22:27,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:22:27,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:22:27,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 15:22:28,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 618 [2023-08-30 15:22:28,033 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 75 transitions, 279 flow. Second operand has 4 states, 4 states have (on average 240.75) internal successors, (963), 4 states have internal predecessors, (963), 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) [2023-08-30 15:22:28,033 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:22:28,033 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 618 [2023-08-30 15:22:28,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:22:32,089 INFO L130 PetriNetUnfolder]: 42936/60075 cut-off events. [2023-08-30 15:22:32,089 INFO L131 PetriNetUnfolder]: For 465/465 co-relation queries the response was YES. [2023-08-30 15:22:32,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121786 conditions, 60075 events. 42936/60075 cut-off events. For 465/465 co-relation queries the response was YES. Maximal size of possible extension queue 2845. Compared 389527 event pairs, 36400 based on Foata normal form. 450/25983 useless extension candidates. Maximal degree in co-relation 121773. Up to 58937 conditions per place. [2023-08-30 15:22:32,382 INFO L137 encePairwiseOnDemand]: 610/618 looper letters, 107 selfloop transitions, 3 changer transitions 1/111 dead transitions. [2023-08-30 15:22:32,382 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 111 transitions, 648 flow [2023-08-30 15:22:32,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 15:22:32,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 15:22:32,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1042 transitions. [2023-08-30 15:22:32,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4215210355987055 [2023-08-30 15:22:32,385 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1042 transitions. [2023-08-30 15:22:32,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1042 transitions. [2023-08-30 15:22:32,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:22:32,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1042 transitions. [2023-08-30 15:22:32,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 260.5) internal successors, (1042), 4 states have internal predecessors, (1042), 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) [2023-08-30 15:22:32,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 618.0) internal successors, (3090), 5 states have internal predecessors, (3090), 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) [2023-08-30 15:22:32,394 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 618.0) internal successors, (3090), 5 states have internal predecessors, (3090), 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) [2023-08-30 15:22:32,394 INFO L175 Difference]: Start difference. First operand has 64 places, 75 transitions, 279 flow. Second operand 4 states and 1042 transitions. [2023-08-30 15:22:32,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 111 transitions, 648 flow [2023-08-30 15:22:32,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 111 transitions, 636 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:22:32,397 INFO L231 Difference]: Finished difference. Result has 66 places, 75 transitions, 284 flow [2023-08-30 15:22:32,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=618, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=284, PETRI_PLACES=66, PETRI_TRANSITIONS=75} [2023-08-30 15:22:32,398 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -1 predicate places. [2023-08-30 15:22:32,398 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 75 transitions, 284 flow [2023-08-30 15:22:32,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 240.75) internal successors, (963), 4 states have internal predecessors, (963), 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) [2023-08-30 15:22:32,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:22:32,399 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-08-30 15:22:32,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 15:22:32,400 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-30 15:22:32,400 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:22:32,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1789992135, now seen corresponding path program 1 times [2023-08-30 15:22:32,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:22:32,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326910764] [2023-08-30 15:22:32,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:22:32,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:22:32,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:22:32,481 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:22:32,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:22:32,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326910764] [2023-08-30 15:22:32,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326910764] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:22:32,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461419413] [2023-08-30 15:22:32,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:22:32,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:22:32,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:22:32,484 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) [2023-08-30 15:22:32,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 15:22:32,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:22:32,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 15:22:32,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:22:32,621 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:22:32,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:22:32,677 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:22:32,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461419413] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:22:32,679 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:22:32,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 15:22:32,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713406353] [2023-08-30 15:22:32,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:22:32,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 15:22:32,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:22:32,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 15:22:32,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 15:22:32,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 618 [2023-08-30 15:22:32,833 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 75 transitions, 284 flow. Second operand has 13 states, 13 states have (on average 245.15384615384616) internal successors, (3187), 13 states have internal predecessors, (3187), 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) [2023-08-30 15:22:32,833 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:22:32,834 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 618 [2023-08-30 15:22:32,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:22:42,104 INFO L130 PetriNetUnfolder]: 94458/132159 cut-off events. [2023-08-30 15:22:42,104 INFO L131 PetriNetUnfolder]: For 7058/7058 co-relation queries the response was YES. [2023-08-30 15:22:42,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282408 conditions, 132159 events. 94458/132159 cut-off events. For 7058/7058 co-relation queries the response was YES. Maximal size of possible extension queue 4042. Compared 906978 event pairs, 80080 based on Foata normal form. 24/56174 useless extension candidates. Maximal degree in co-relation 282394. Up to 15840 conditions per place. [2023-08-30 15:22:42,728 INFO L137 encePairwiseOnDemand]: 610/618 looper letters, 524 selfloop transitions, 51 changer transitions 0/575 dead transitions. [2023-08-30 15:22:42,728 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 575 transitions, 2702 flow [2023-08-30 15:22:42,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 15:22:42,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 15:22:42,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3515 transitions. [2023-08-30 15:22:42,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.473975188781014 [2023-08-30 15:22:42,737 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3515 transitions. [2023-08-30 15:22:42,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3515 transitions. [2023-08-30 15:22:42,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:22:42,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3515 transitions. [2023-08-30 15:22:42,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 292.9166666666667) internal successors, (3515), 12 states have internal predecessors, (3515), 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) [2023-08-30 15:22:42,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 618.0) internal successors, (8034), 13 states have internal predecessors, (8034), 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) [2023-08-30 15:22:42,756 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 618.0) internal successors, (8034), 13 states have internal predecessors, (8034), 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) [2023-08-30 15:22:42,756 INFO L175 Difference]: Start difference. First operand has 66 places, 75 transitions, 284 flow. Second operand 12 states and 3515 transitions. [2023-08-30 15:22:42,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 575 transitions, 2702 flow [2023-08-30 15:22:42,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 575 transitions, 2696 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-30 15:22:42,765 INFO L231 Difference]: Finished difference. Result has 82 places, 105 transitions, 626 flow [2023-08-30 15:22:42,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=618, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=626, PETRI_PLACES=82, PETRI_TRANSITIONS=105} [2023-08-30 15:22:42,768 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 15 predicate places. [2023-08-30 15:22:42,768 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 105 transitions, 626 flow [2023-08-30 15:22:42,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 245.15384615384616) internal successors, (3187), 13 states have internal predecessors, (3187), 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) [2023-08-30 15:22:42,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:22:42,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:22:42,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 15:22:42,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:22:42,976 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-30 15:22:42,976 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:22:42,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1174360713, now seen corresponding path program 1 times [2023-08-30 15:22:42,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:22:42,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130233195] [2023-08-30 15:22:42,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:22:42,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:22:42,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:22:43,109 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:22:43,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:22:43,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130233195] [2023-08-30 15:22:43,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130233195] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:22:43,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737967659] [2023-08-30 15:22:43,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:22:43,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:22:43,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:22:43,112 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) [2023-08-30 15:22:43,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 15:22:43,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:22:43,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:22:43,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:22:43,235 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:22:43,235 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:22:43,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1737967659] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:22:43,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:22:43,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-08-30 15:22:43,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487000845] [2023-08-30 15:22:43,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:22:43,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:22:43,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:22:43,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:22:43,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 15:22:43,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 618 [2023-08-30 15:22:43,244 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 105 transitions, 626 flow. Second operand has 3 states, 3 states have (on average 253.66666666666666) internal successors, (761), 3 states have internal predecessors, (761), 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) [2023-08-30 15:22:43,244 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:22:43,244 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 618 [2023-08-30 15:22:43,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:22:51,266 INFO L130 PetriNetUnfolder]: 79850/111743 cut-off events. [2023-08-30 15:22:51,266 INFO L131 PetriNetUnfolder]: For 6558/6558 co-relation queries the response was YES. [2023-08-30 15:22:51,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234444 conditions, 111743 events. 79850/111743 cut-off events. For 6558/6558 co-relation queries the response was YES. Maximal size of possible extension queue 3439. Compared 749493 event pairs, 66968 based on Foata normal form. 0/49367 useless extension candidates. Maximal degree in co-relation 234423. Up to 111743 conditions per place. [2023-08-30 15:22:51,861 INFO L137 encePairwiseOnDemand]: 615/618 looper letters, 102 selfloop transitions, 1 changer transitions 0/103 dead transitions. [2023-08-30 15:22:51,861 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 103 transitions, 824 flow [2023-08-30 15:22:51,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:22:51,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:22:51,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 808 transitions. [2023-08-30 15:22:51,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43581445523193096 [2023-08-30 15:22:51,863 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 808 transitions. [2023-08-30 15:22:51,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 808 transitions. [2023-08-30 15:22:51,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:22:51,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 808 transitions. [2023-08-30 15:22:51,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 269.3333333333333) internal successors, (808), 3 states have internal predecessors, (808), 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) [2023-08-30 15:22:51,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 618.0) internal successors, (2472), 4 states have internal predecessors, (2472), 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) [2023-08-30 15:22:51,866 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 618.0) internal successors, (2472), 4 states have internal predecessors, (2472), 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) [2023-08-30 15:22:51,866 INFO L175 Difference]: Start difference. First operand has 82 places, 105 transitions, 626 flow. Second operand 3 states and 808 transitions. [2023-08-30 15:22:51,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 103 transitions, 824 flow [2023-08-30 15:22:51,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 103 transitions, 680 flow, removed 39 selfloop flow, removed 5 redundant places. [2023-08-30 15:22:51,872 INFO L231 Difference]: Finished difference. Result has 77 places, 103 transitions, 476 flow [2023-08-30 15:22:51,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=618, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=476, PETRI_PLACES=77, PETRI_TRANSITIONS=103} [2023-08-30 15:22:51,873 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 10 predicate places. [2023-08-30 15:22:51,873 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 103 transitions, 476 flow [2023-08-30 15:22:51,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 253.66666666666666) internal successors, (761), 3 states have internal predecessors, (761), 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) [2023-08-30 15:22:51,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:22:51,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:22:51,882 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 15:22:52,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:22:52,083 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-30 15:22:52,083 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:22:52,083 INFO L85 PathProgramCache]: Analyzing trace with hash 2045447239, now seen corresponding path program 1 times [2023-08-30 15:22:52,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:22:52,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070113634] [2023-08-30 15:22:52,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:22:52,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:22:52,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:22:52,147 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:22:52,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:22:52,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070113634] [2023-08-30 15:22:52,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070113634] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:22:52,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:22:52,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:22:52,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018243696] [2023-08-30 15:22:52,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:22:52,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:22:52,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:22:52,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:22:52,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:22:52,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 618 [2023-08-30 15:22:52,158 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 103 transitions, 476 flow. Second operand has 3 states, 3 states have (on average 254.0) internal successors, (762), 3 states have internal predecessors, (762), 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) [2023-08-30 15:22:52,158 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:22:52,158 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 618 [2023-08-30 15:22:52,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:22:59,264 INFO L130 PetriNetUnfolder]: 74482/104175 cut-off events. [2023-08-30 15:22:59,264 INFO L131 PetriNetUnfolder]: For 6339/6339 co-relation queries the response was YES. [2023-08-30 15:22:59,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 218742 conditions, 104175 events. 74482/104175 cut-off events. For 6339/6339 co-relation queries the response was YES. Maximal size of possible extension queue 3192. Compared 691196 event pairs, 62040 based on Foata normal form. 0/46840 useless extension candidates. Maximal degree in co-relation 218721. Up to 104175 conditions per place. [2023-08-30 15:22:59,876 INFO L137 encePairwiseOnDemand]: 616/618 looper letters, 101 selfloop transitions, 1 changer transitions 0/102 dead transitions. [2023-08-30 15:22:59,876 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 102 transitions, 678 flow [2023-08-30 15:22:59,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:22:59,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:22:59,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 806 transitions. [2023-08-30 15:22:59,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43473570658036675 [2023-08-30 15:22:59,878 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 806 transitions. [2023-08-30 15:22:59,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 806 transitions. [2023-08-30 15:22:59,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:22:59,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 806 transitions. [2023-08-30 15:22:59,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 268.6666666666667) internal successors, (806), 3 states have internal predecessors, (806), 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) [2023-08-30 15:22:59,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 618.0) internal successors, (2472), 4 states have internal predecessors, (2472), 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) [2023-08-30 15:22:59,883 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 618.0) internal successors, (2472), 4 states have internal predecessors, (2472), 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) [2023-08-30 15:22:59,883 INFO L175 Difference]: Start difference. First operand has 77 places, 103 transitions, 476 flow. Second operand 3 states and 806 transitions. [2023-08-30 15:22:59,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 102 transitions, 678 flow [2023-08-30 15:22:59,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 102 transitions, 677 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:22:59,889 INFO L231 Difference]: Finished difference. Result has 77 places, 102 transitions, 475 flow [2023-08-30 15:22:59,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=618, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=475, PETRI_PLACES=77, PETRI_TRANSITIONS=102} [2023-08-30 15:22:59,890 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 10 predicate places. [2023-08-30 15:22:59,890 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 102 transitions, 475 flow [2023-08-30 15:22:59,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 254.0) internal successors, (762), 3 states have internal predecessors, (762), 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) [2023-08-30 15:22:59,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:22:59,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:22:59,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 15:22:59,891 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-30 15:22:59,891 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:22:59,891 INFO L85 PathProgramCache]: Analyzing trace with hash 2045447238, now seen corresponding path program 1 times [2023-08-30 15:22:59,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:22:59,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578001707] [2023-08-30 15:22:59,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:22:59,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:22:59,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:23:00,062 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:23:00,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:23:00,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578001707] [2023-08-30 15:23:00,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578001707] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:23:00,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841297469] [2023-08-30 15:23:00,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:23:00,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:23:00,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:23:00,065 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) [2023-08-30 15:23:00,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 15:23:00,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:23:00,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 15:23:00,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:23:00,231 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:23:00,232 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:23:00,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841297469] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:23:00,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:23:00,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 6 [2023-08-30 15:23:00,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405160827] [2023-08-30 15:23:00,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:23:00,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:23:00,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:23:00,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:23:00,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-30 15:23:00,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 618 [2023-08-30 15:23:00,256 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 102 transitions, 475 flow. Second operand has 4 states, 4 states have (on average 251.25) internal successors, (1005), 4 states have internal predecessors, (1005), 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) [2023-08-30 15:23:00,257 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:23:00,257 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 618 [2023-08-30 15:23:00,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:23:07,817 INFO L130 PetriNetUnfolder]: 76682/106375 cut-off events. [2023-08-30 15:23:07,818 INFO L131 PetriNetUnfolder]: For 6086/6086 co-relation queries the response was YES. [2023-08-30 15:23:08,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227543 conditions, 106375 events. 76682/106375 cut-off events. For 6086/6086 co-relation queries the response was YES. Maximal size of possible extension queue 3191. Compared 728068 event pairs, 27544 based on Foata normal form. 0/49040 useless extension candidates. Maximal degree in co-relation 227521. Up to 57469 conditions per place. [2023-08-30 15:23:08,430 INFO L137 encePairwiseOnDemand]: 610/618 looper letters, 120 selfloop transitions, 7 changer transitions 0/127 dead transitions. [2023-08-30 15:23:08,430 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 127 transitions, 788 flow [2023-08-30 15:23:08,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 15:23:08,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 15:23:08,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1074 transitions. [2023-08-30 15:23:08,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4344660194174757 [2023-08-30 15:23:08,434 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1074 transitions. [2023-08-30 15:23:08,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1074 transitions. [2023-08-30 15:23:08,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:23:08,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1074 transitions. [2023-08-30 15:23:08,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 268.5) internal successors, (1074), 4 states have internal predecessors, (1074), 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) [2023-08-30 15:23:08,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 618.0) internal successors, (3090), 5 states have internal predecessors, (3090), 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) [2023-08-30 15:23:08,441 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 618.0) internal successors, (3090), 5 states have internal predecessors, (3090), 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) [2023-08-30 15:23:08,441 INFO L175 Difference]: Start difference. First operand has 77 places, 102 transitions, 475 flow. Second operand 4 states and 1074 transitions. [2023-08-30 15:23:08,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 127 transitions, 788 flow [2023-08-30 15:23:08,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 127 transitions, 787 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:23:08,447 INFO L231 Difference]: Finished difference. Result has 80 places, 103 transitions, 511 flow [2023-08-30 15:23:08,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=618, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=511, PETRI_PLACES=80, PETRI_TRANSITIONS=103} [2023-08-30 15:23:08,447 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 13 predicate places. [2023-08-30 15:23:08,448 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 103 transitions, 511 flow [2023-08-30 15:23:08,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 251.25) internal successors, (1005), 4 states have internal predecessors, (1005), 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) [2023-08-30 15:23:08,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:23:08,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:23:08,459 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 15:23:08,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:23:08,653 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-30 15:23:08,654 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:23:08,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1015649919, now seen corresponding path program 1 times [2023-08-30 15:23:08,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:23:08,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448530309] [2023-08-30 15:23:08,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:23:08,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:23:08,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:23:08,707 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:23:08,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:23:08,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448530309] [2023-08-30 15:23:08,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448530309] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:23:08,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:23:08,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:23:08,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262564575] [2023-08-30 15:23:08,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:23:08,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:23:08,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:23:08,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:23:08,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:23:08,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 618 [2023-08-30 15:23:08,714 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 103 transitions, 511 flow. Second operand has 3 states, 3 states have (on average 255.33333333333334) internal successors, (766), 3 states have internal predecessors, (766), 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) [2023-08-30 15:23:08,715 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:23:08,715 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 618 [2023-08-30 15:23:08,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:23:23,229 INFO L130 PetriNetUnfolder]: 135774/187467 cut-off events. [2023-08-30 15:23:23,229 INFO L131 PetriNetUnfolder]: For 60470/60470 co-relation queries the response was YES. [2023-08-30 15:23:23,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 446853 conditions, 187467 events. 135774/187467 cut-off events. For 60470/60470 co-relation queries the response was YES. Maximal size of possible extension queue 5151. Compared 1327460 event pairs, 61116 based on Foata normal form. 0/95130 useless extension candidates. Maximal degree in co-relation 446828. Up to 104902 conditions per place. [2023-08-30 15:23:24,351 INFO L137 encePairwiseOnDemand]: 614/618 looper letters, 141 selfloop transitions, 2 changer transitions 0/143 dead transitions. [2023-08-30 15:23:24,351 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 143 transitions, 908 flow [2023-08-30 15:23:24,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:23:24,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:23:24,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 847 transitions. [2023-08-30 15:23:24,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45685005393743255 [2023-08-30 15:23:24,354 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 847 transitions. [2023-08-30 15:23:24,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 847 transitions. [2023-08-30 15:23:24,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:23:24,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 847 transitions. [2023-08-30 15:23:24,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 282.3333333333333) internal successors, (847), 3 states have internal predecessors, (847), 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) [2023-08-30 15:23:24,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 618.0) internal successors, (2472), 4 states have internal predecessors, (2472), 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) [2023-08-30 15:23:24,359 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 618.0) internal successors, (2472), 4 states have internal predecessors, (2472), 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) [2023-08-30 15:23:24,359 INFO L175 Difference]: Start difference. First operand has 80 places, 103 transitions, 511 flow. Second operand 3 states and 847 transitions. [2023-08-30 15:23:24,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 143 transitions, 908 flow [2023-08-30 15:23:24,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 143 transitions, 907 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:23:24,540 INFO L231 Difference]: Finished difference. Result has 82 places, 104 transitions, 528 flow [2023-08-30 15:23:24,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=618, PETRI_DIFFERENCE_MINUEND_FLOW=510, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=528, PETRI_PLACES=82, PETRI_TRANSITIONS=104} [2023-08-30 15:23:24,543 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 15 predicate places. [2023-08-30 15:23:24,543 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 104 transitions, 528 flow [2023-08-30 15:23:24,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 255.33333333333334) internal successors, (766), 3 states have internal predecessors, (766), 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) [2023-08-30 15:23:24,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:23:24,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:23:24,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 15:23:24,544 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-30 15:23:24,544 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:23:24,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1015649777, now seen corresponding path program 1 times [2023-08-30 15:23:24,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:23:24,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618204278] [2023-08-30 15:23:24,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:23:24,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:23:24,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:23:24,671 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:23:24,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:23:24,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618204278] [2023-08-30 15:23:24,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618204278] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:23:24,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:23:24,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 15:23:24,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236152696] [2023-08-30 15:23:24,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:23:24,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:23:24,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:23:24,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:23:24,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 15:23:24,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 618 [2023-08-30 15:23:24,686 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 104 transitions, 528 flow. Second operand has 4 states, 4 states have (on average 249.5) internal successors, (998), 4 states have internal predecessors, (998), 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) [2023-08-30 15:23:24,686 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:23:24,686 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 618 [2023-08-30 15:23:24,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:23:55,244 INFO L130 PetriNetUnfolder]: 272306/372751 cut-off events. [2023-08-30 15:23:55,245 INFO L131 PetriNetUnfolder]: For 172956/172956 co-relation queries the response was YES. [2023-08-30 15:23:56,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 925915 conditions, 372751 events. 272306/372751 cut-off events. For 172956/172956 co-relation queries the response was YES. Maximal size of possible extension queue 9926. Compared 2733493 event pairs, 30371 based on Foata normal form. 6776/191688 useless extension candidates. Maximal degree in co-relation 925889. Up to 164088 conditions per place. [2023-08-30 15:23:57,954 INFO L137 encePairwiseOnDemand]: 608/618 looper letters, 191 selfloop transitions, 12 changer transitions 0/203 dead transitions. [2023-08-30 15:23:57,954 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 203 transitions, 1250 flow [2023-08-30 15:23:57,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 15:23:57,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 15:23:57,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1387 transitions. [2023-08-30 15:23:57,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4488673139158576 [2023-08-30 15:23:57,956 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1387 transitions. [2023-08-30 15:23:57,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1387 transitions. [2023-08-30 15:23:57,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:23:57,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1387 transitions. [2023-08-30 15:23:57,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 277.4) internal successors, (1387), 5 states have internal predecessors, (1387), 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) [2023-08-30 15:23:57,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 618.0) internal successors, (3708), 6 states have internal predecessors, (3708), 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) [2023-08-30 15:23:57,964 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 618.0) internal successors, (3708), 6 states have internal predecessors, (3708), 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) [2023-08-30 15:23:57,964 INFO L175 Difference]: Start difference. First operand has 82 places, 104 transitions, 528 flow. Second operand 5 states and 1387 transitions. [2023-08-30 15:23:57,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 203 transitions, 1250 flow [2023-08-30 15:23:58,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 203 transitions, 1245 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:23:58,102 INFO L231 Difference]: Finished difference. Result has 88 places, 115 transitions, 643 flow [2023-08-30 15:23:58,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=618, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=643, PETRI_PLACES=88, PETRI_TRANSITIONS=115} [2023-08-30 15:23:58,103 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 21 predicate places. [2023-08-30 15:23:58,103 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 115 transitions, 643 flow [2023-08-30 15:23:58,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 249.5) internal successors, (998), 4 states have internal predecessors, (998), 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) [2023-08-30 15:23:58,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:23:58,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:23:58,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 15:23:58,104 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-30 15:23:58,104 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:23:58,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1362665638, now seen corresponding path program 1 times [2023-08-30 15:23:58,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:23:58,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429552597] [2023-08-30 15:23:58,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:23:58,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:23:58,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:23:58,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:23:58,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:23:58,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429552597] [2023-08-30 15:23:58,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429552597] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:23:58,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:23:58,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 15:23:58,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55157551] [2023-08-30 15:23:58,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:23:58,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:23:58,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:23:58,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:23:58,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 15:23:58,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 618 [2023-08-30 15:23:58,240 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 115 transitions, 643 flow. Second operand has 4 states, 4 states have (on average 241.75) internal successors, (967), 4 states have internal predecessors, (967), 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) [2023-08-30 15:23:58,240 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:23:58,240 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 618 [2023-08-30 15:23:58,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:24:31,621 INFO L130 PetriNetUnfolder]: 279368/384083 cut-off events. [2023-08-30 15:24:31,621 INFO L131 PetriNetUnfolder]: For 329613/329613 co-relation queries the response was YES. [2023-08-30 15:24:33,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1107267 conditions, 384083 events. 279368/384083 cut-off events. For 329613/329613 co-relation queries the response was YES. Maximal size of possible extension queue 10196. Compared 2834283 event pairs, 209044 based on Foata normal form. 2530/197454 useless extension candidates. Maximal degree in co-relation 1107237. Up to 372739 conditions per place. [2023-08-30 15:24:34,697 INFO L137 encePairwiseOnDemand]: 603/618 looper letters, 134 selfloop transitions, 13 changer transitions 5/152 dead transitions. [2023-08-30 15:24:34,697 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 152 transitions, 1157 flow [2023-08-30 15:24:34,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 15:24:34,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 15:24:34,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1044 transitions. [2023-08-30 15:24:34,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4223300970873786 [2023-08-30 15:24:34,699 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1044 transitions. [2023-08-30 15:24:34,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1044 transitions. [2023-08-30 15:24:34,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:24:34,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1044 transitions. [2023-08-30 15:24:34,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 261.0) internal successors, (1044), 4 states have internal predecessors, (1044), 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) [2023-08-30 15:24:34,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 618.0) internal successors, (3090), 5 states have internal predecessors, (3090), 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) [2023-08-30 15:24:34,703 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 618.0) internal successors, (3090), 5 states have internal predecessors, (3090), 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) [2023-08-30 15:24:34,703 INFO L175 Difference]: Start difference. First operand has 88 places, 115 transitions, 643 flow. Second operand 4 states and 1044 transitions. [2023-08-30 15:24:34,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 152 transitions, 1157 flow [2023-08-30 15:24:35,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 152 transitions, 1150 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:24:35,109 INFO L231 Difference]: Finished difference. Result has 91 places, 115 transitions, 687 flow [2023-08-30 15:24:35,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=618, PETRI_DIFFERENCE_MINUEND_FLOW=636, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=687, PETRI_PLACES=91, PETRI_TRANSITIONS=115} [2023-08-30 15:24:35,110 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 24 predicate places. [2023-08-30 15:24:35,110 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 115 transitions, 687 flow [2023-08-30 15:24:35,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 241.75) internal successors, (967), 4 states have internal predecessors, (967), 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) [2023-08-30 15:24:35,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:24:35,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:24:35,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 15:24:35,111 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-30 15:24:35,111 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:24:35,111 INFO L85 PathProgramCache]: Analyzing trace with hash 540127927, now seen corresponding path program 1 times [2023-08-30 15:24:35,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:24:35,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368278018] [2023-08-30 15:24:35,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:24:35,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:24:35,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:24:35,228 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 15:24:35,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:24:35,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368278018] [2023-08-30 15:24:35,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368278018] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:24:35,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:24:35,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 15:24:35,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057545280] [2023-08-30 15:24:35,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:24:35,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:24:35,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:24:35,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:24:35,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:24:35,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 618 [2023-08-30 15:24:35,242 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 115 transitions, 687 flow. Second operand has 3 states, 3 states have (on average 251.0) internal successors, (753), 3 states have internal predecessors, (753), 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) [2023-08-30 15:24:35,242 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:24:35,242 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 618 [2023-08-30 15:24:35,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:24:58,784 INFO L130 PetriNetUnfolder]: 196901/275810 cut-off events. [2023-08-30 15:24:58,784 INFO L131 PetriNetUnfolder]: For 218085/218085 co-relation queries the response was YES. [2023-08-30 15:24:59,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 878989 conditions, 275810 events. 196901/275810 cut-off events. For 218085/218085 co-relation queries the response was YES. Maximal size of possible extension queue 7669. Compared 2064807 event pairs, 65956 based on Foata normal form. 4026/145238 useless extension candidates. Maximal degree in co-relation 878958. Up to 245642 conditions per place. [2023-08-30 15:25:00,828 INFO L137 encePairwiseOnDemand]: 614/618 looper letters, 147 selfloop transitions, 4 changer transitions 0/151 dead transitions. [2023-08-30 15:25:00,829 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 151 transitions, 1162 flow [2023-08-30 15:25:00,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:25:00,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:25:00,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 819 transitions. [2023-08-30 15:25:00,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.441747572815534 [2023-08-30 15:25:00,831 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 819 transitions. [2023-08-30 15:25:00,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 819 transitions. [2023-08-30 15:25:00,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:25:00,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 819 transitions. [2023-08-30 15:25:00,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 273.0) internal successors, (819), 3 states have internal predecessors, (819), 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) [2023-08-30 15:25:00,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 618.0) internal successors, (2472), 4 states have internal predecessors, (2472), 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) [2023-08-30 15:25:00,833 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 618.0) internal successors, (2472), 4 states have internal predecessors, (2472), 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) [2023-08-30 15:25:00,833 INFO L175 Difference]: Start difference. First operand has 91 places, 115 transitions, 687 flow. Second operand 3 states and 819 transitions. [2023-08-30 15:25:00,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 151 transitions, 1162 flow [2023-08-30 15:25:00,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 151 transitions, 1146 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-30 15:25:00,990 INFO L231 Difference]: Finished difference. Result has 93 places, 117 transitions, 703 flow [2023-08-30 15:25:00,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=618, PETRI_DIFFERENCE_MINUEND_FLOW=671, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=703, PETRI_PLACES=93, PETRI_TRANSITIONS=117} [2023-08-30 15:25:00,991 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 26 predicate places. [2023-08-30 15:25:00,991 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 117 transitions, 703 flow [2023-08-30 15:25:00,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 251.0) internal successors, (753), 3 states have internal predecessors, (753), 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) [2023-08-30 15:25:00,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:25:00,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:25:00,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 15:25:00,991 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-30 15:25:00,992 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:25:00,992 INFO L85 PathProgramCache]: Analyzing trace with hash -2132870779, now seen corresponding path program 1 times [2023-08-30 15:25:00,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:25:00,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881344830] [2023-08-30 15:25:00,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:25:00,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:25:01,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:25:01,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:25:01,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:25:01,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881344830] [2023-08-30 15:25:01,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881344830] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:25:01,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:25:01,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:25:01,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503827403] [2023-08-30 15:25:01,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:25:01,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:25:01,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:25:01,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:25:01,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:25:01,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 618 [2023-08-30 15:25:01,078 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 117 transitions, 703 flow. Second operand has 3 states, 3 states have (on average 253.0) internal successors, (759), 3 states have internal predecessors, (759), 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) [2023-08-30 15:25:01,078 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:25:01,078 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 618 [2023-08-30 15:25:01,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:25:21,856 INFO L130 PetriNetUnfolder]: 170512/239301 cut-off events. [2023-08-30 15:25:21,856 INFO L131 PetriNetUnfolder]: For 218352/218352 co-relation queries the response was YES. [2023-08-30 15:25:22,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 788213 conditions, 239301 events. 170512/239301 cut-off events. For 218352/218352 co-relation queries the response was YES. Maximal size of possible extension queue 6547. Compared 1738343 event pairs, 51590 based on Foata normal form. 2068/119464 useless extension candidates. Maximal degree in co-relation 788180. Up to 212411 conditions per place. [2023-08-30 15:25:23,813 INFO L137 encePairwiseOnDemand]: 608/618 looper letters, 136 selfloop transitions, 5 changer transitions 0/141 dead transitions. [2023-08-30 15:25:23,813 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 141 transitions, 1102 flow [2023-08-30 15:25:23,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:25:23,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:25:23,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 825 transitions. [2023-08-30 15:25:23,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4449838187702265 [2023-08-30 15:25:23,815 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 825 transitions. [2023-08-30 15:25:23,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 825 transitions. [2023-08-30 15:25:23,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:25:23,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 825 transitions. [2023-08-30 15:25:23,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 275.0) internal successors, (825), 3 states have internal predecessors, (825), 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) [2023-08-30 15:25:23,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 618.0) internal successors, (2472), 4 states have internal predecessors, (2472), 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) [2023-08-30 15:25:23,818 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 618.0) internal successors, (2472), 4 states have internal predecessors, (2472), 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) [2023-08-30 15:25:23,818 INFO L175 Difference]: Start difference. First operand has 93 places, 117 transitions, 703 flow. Second operand 3 states and 825 transitions. [2023-08-30 15:25:23,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 141 transitions, 1102 flow [2023-08-30 15:25:23,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 141 transitions, 1098 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:25:23,966 INFO L231 Difference]: Finished difference. Result has 95 places, 121 transitions, 748 flow [2023-08-30 15:25:23,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=618, PETRI_DIFFERENCE_MINUEND_FLOW=699, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=748, PETRI_PLACES=95, PETRI_TRANSITIONS=121} [2023-08-30 15:25:23,967 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 28 predicate places. [2023-08-30 15:25:23,967 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 121 transitions, 748 flow [2023-08-30 15:25:23,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 253.0) internal successors, (759), 3 states have internal predecessors, (759), 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) [2023-08-30 15:25:23,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:25:23,967 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:25:23,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 15:25:23,967 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-30 15:25:23,968 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:25:23,968 INFO L85 PathProgramCache]: Analyzing trace with hash 819260633, now seen corresponding path program 1 times [2023-08-30 15:25:23,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:25:23,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272190802] [2023-08-30 15:25:23,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:25:23,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:25:23,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:25:24,017 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:25:24,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:25:24,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272190802] [2023-08-30 15:25:24,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272190802] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:25:24,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313285984] [2023-08-30 15:25:24,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:25:24,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:25:24,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:25:24,024 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) [2023-08-30 15:25:24,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 15:25:24,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:25:24,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:25:24,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:25:24,165 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:25:24,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:25:24,186 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:25:24,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313285984] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:25:24,186 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:25:24,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 15:25:24,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253526609] [2023-08-30 15:25:24,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:25:24,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 15:25:24,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:25:24,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 15:25:24,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 15:25:24,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 618 [2023-08-30 15:25:24,199 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 121 transitions, 748 flow. Second operand has 7 states, 7 states have (on average 255.42857142857142) internal successors, (1788), 7 states have internal predecessors, (1788), 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) [2023-08-30 15:25:24,199 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:25:24,199 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 618 [2023-08-30 15:25:24,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand