./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-prod-cons3.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --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-prod-cons3.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 841ea5a5ca051cc33dfe29d877ccdea4b63526a0ee61a2de18869a9ba1858c4b --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 08:24:24,643 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 08:24:24,645 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 08:24:24,686 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 08:24:24,687 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 08:24:24,690 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 08:24:24,691 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 08:24:24,694 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 08:24:24,696 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 08:24:24,700 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 08:24:24,701 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 08:24:24,703 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 08:24:24,703 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 08:24:24,705 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 08:24:24,706 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 08:24:24,711 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 08:24:24,712 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 08:24:24,713 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 08:24:24,715 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 08:24:24,721 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 08:24:24,730 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 08:24:24,731 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 08:24:24,731 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 08:24:24,732 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 08:24:24,739 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 08:24:24,739 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 08:24:24,739 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 08:24:24,741 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 08:24:24,741 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 08:24:24,742 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 08:24:24,742 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 08:24:24,743 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 08:24:24,745 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 08:24:24,746 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 08:24:24,747 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 08:24:24,747 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 08:24:24,747 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 08:24:24,747 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 08:24:24,748 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 08:24:24,748 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 08:24:24,749 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 08:24:24,751 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 08:24:24,778 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 08:24:24,778 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 08:24:24,779 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 08:24:24,779 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 08:24:24,780 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 08:24:24,780 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 08:24:24,781 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 08:24:24,781 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 08:24:24,781 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 08:24:24,781 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 08:24:24,782 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 08:24:24,782 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 08:24:24,782 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 08:24:24,783 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 08:24:24,783 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 08:24:24,783 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 08:24:24,783 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 08:24:24,783 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 08:24:24,784 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 08:24:24,784 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 08:24:24,784 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 08:24:24,784 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 08:24:24,784 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 08:24:24,785 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 08:24:24,785 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 08:24:24,785 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 08:24:24,785 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:24:24,785 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 08:24:24,786 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 08:24:24,786 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 08:24:24,786 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 08:24:24,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 08:24:24,786 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 08:24:24,787 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 08:24:24,787 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 08:24:24,787 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 08:24:24,787 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 08:24:24,787 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 841ea5a5ca051cc33dfe29d877ccdea4b63526a0ee61a2de18869a9ba1858c4b Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 08:24:25,069 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 08:24:25,090 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 08:24:25,093 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 08:24:25,094 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 08:24:25,095 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 08:24:25,096 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-prod-cons3.wvr.c [2023-09-01 08:24:26,273 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 08:24:26,464 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 08:24:26,465 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-prod-cons3.wvr.c [2023-09-01 08:24:26,474 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/277491c83/f0b61632ff2b4c81a80cf63555bb65a8/FLAGe8d63bdff [2023-09-01 08:24:26,485 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/277491c83/f0b61632ff2b4c81a80cf63555bb65a8 [2023-09-01 08:24:26,488 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 08:24:26,489 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 08:24:26,491 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 08:24:26,492 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 08:24:26,495 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 08:24:26,496 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:24:26" (1/1) ... [2023-09-01 08:24:26,497 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a8f8420 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:24:26, skipping insertion in model container [2023-09-01 08:24:26,497 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:24:26" (1/1) ... [2023-09-01 08:24:26,503 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 08:24:26,532 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 08:24:26,673 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-prod-cons3.wvr.c[4007,4020] [2023-09-01 08:24:26,677 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:24:26,685 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 08:24:26,710 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-prod-cons3.wvr.c[4007,4020] [2023-09-01 08:24:26,713 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:24:26,721 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 08:24:26,721 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 08:24:26,727 INFO L208 MainTranslator]: Completed translation [2023-09-01 08:24:26,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:24:26 WrapperNode [2023-09-01 08:24:26,729 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 08:24:26,731 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 08:24:26,731 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 08:24:26,731 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 08:24:26,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:24:26" (1/1) ... [2023-09-01 08:24:26,758 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:24:26" (1/1) ... [2023-09-01 08:24:26,800 INFO L138 Inliner]: procedures = 26, calls = 73, calls flagged for inlining = 15, calls inlined = 17, statements flattened = 294 [2023-09-01 08:24:26,804 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 08:24:26,805 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 08:24:26,806 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 08:24:26,806 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 08:24:26,814 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:24:26" (1/1) ... [2023-09-01 08:24:26,814 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:24:26" (1/1) ... [2023-09-01 08:24:26,825 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:24:26" (1/1) ... [2023-09-01 08:24:26,827 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:24:26" (1/1) ... [2023-09-01 08:24:26,852 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:24:26" (1/1) ... [2023-09-01 08:24:26,855 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:24:26" (1/1) ... [2023-09-01 08:24:26,857 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:24:26" (1/1) ... [2023-09-01 08:24:26,858 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:24:26" (1/1) ... [2023-09-01 08:24:26,867 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 08:24:26,868 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 08:24:26,868 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 08:24:26,868 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 08:24:26,869 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:24:26" (1/1) ... [2023-09-01 08:24:26,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:24:26,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:24:26,900 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) [2023-09-01 08:24:26,929 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 [2023-09-01 08:24:26,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 08:24:26,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 08:24:26,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 08:24:26,944 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 08:24:26,945 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 08:24:26,945 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 08:24:26,945 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 08:24:26,945 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 08:24:26,945 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 08:24:26,945 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 08:24:26,945 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-09-01 08:24:26,946 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-09-01 08:24:26,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 08:24:26,946 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 08:24:26,946 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 08:24:26,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 08:24:26,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 08:24:26,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 08:24:26,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 08:24:26,948 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 08:24:27,102 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 08:24:27,103 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 08:24:27,462 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 08:24:27,679 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 08:24:27,679 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-09-01 08:24:27,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:24:27 BoogieIcfgContainer [2023-09-01 08:24:27,682 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 08:24:27,685 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 08:24:27,685 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 08:24:27,688 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 08:24:27,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 08:24:26" (1/3) ... [2023-09-01 08:24:27,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51653f5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:24:27, skipping insertion in model container [2023-09-01 08:24:27,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:24:26" (2/3) ... [2023-09-01 08:24:27,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51653f5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:24:27, skipping insertion in model container [2023-09-01 08:24:27,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:24:27" (3/3) ... [2023-09-01 08:24:27,694 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons3.wvr.c [2023-09-01 08:24:27,702 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 08:24:27,710 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 08:24:27,710 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2023-09-01 08:24:27,710 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 08:24:27,843 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 08:24:27,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 248 places, 253 transitions, 538 flow [2023-09-01 08:24:28,000 INFO L130 PetriNetUnfolder]: 18/249 cut-off events. [2023-09-01 08:24:28,000 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-09-01 08:24:28,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 266 conditions, 249 events. 18/249 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 245 event pairs, 0 based on Foata normal form. 0/209 useless extension candidates. Maximal degree in co-relation 217. Up to 3 conditions per place. [2023-09-01 08:24:28,008 INFO L82 GeneralOperation]: Start removeDead. Operand has 248 places, 253 transitions, 538 flow [2023-09-01 08:24:28,017 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 225 places, 229 transitions, 479 flow [2023-09-01 08:24:28,021 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 08:24:28,037 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 225 places, 229 transitions, 479 flow [2023-09-01 08:24:28,039 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 225 places, 229 transitions, 479 flow [2023-09-01 08:24:28,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 225 places, 229 transitions, 479 flow [2023-09-01 08:24:28,089 INFO L130 PetriNetUnfolder]: 17/229 cut-off events. [2023-09-01 08:24:28,089 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 08:24:28,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245 conditions, 229 events. 17/229 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 243 event pairs, 0 based on Foata normal form. 0/190 useless extension candidates. Maximal degree in co-relation 217. Up to 3 conditions per place. [2023-09-01 08:24:28,094 INFO L119 LiptonReduction]: Number of co-enabled transitions 4328 [2023-09-01 08:24:37,035 INFO L134 LiptonReduction]: Checked pairs total: 12773 [2023-09-01 08:24:37,035 INFO L136 LiptonReduction]: Total number of compositions: 237 [2023-09-01 08:24:37,048 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 08:24:37,053 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;@687abd76, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 08:24:37,053 INFO L358 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2023-09-01 08:24:37,056 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-09-01 08:24:37,056 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 08:24:37,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:24:37,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 08:24:37,057 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-09-01 08:24:37,061 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:24:37,061 INFO L85 PathProgramCache]: Analyzing trace with hash 35217, now seen corresponding path program 1 times [2023-09-01 08:24:37,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:24:37,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194793439] [2023-09-01 08:24:37,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:24:37,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:24:37,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:24:37,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:24:37,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:24:37,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194793439] [2023-09-01 08:24:37,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194793439] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:24:37,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:24:37,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 08:24:37,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899041252] [2023-09-01 08:24:37,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:24:37,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:24:37,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:24:37,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:24:37,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:24:37,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 490 [2023-09-01 08:24:37,488 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 56 transitions, 133 flow. Second operand has 3 states, 3 states have (on average 206.66666666666666) internal successors, (620), 3 states have internal predecessors, (620), 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) [2023-09-01 08:24:37,488 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:24:37,488 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 490 [2023-09-01 08:24:37,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:24:41,755 INFO L130 PetriNetUnfolder]: 34763/46437 cut-off events. [2023-09-01 08:24:41,755 INFO L131 PetriNetUnfolder]: For 1934/1934 co-relation queries the response was YES. [2023-09-01 08:24:41,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94682 conditions, 46437 events. 34763/46437 cut-off events. For 1934/1934 co-relation queries the response was YES. Maximal size of possible extension queue 2570. Compared 273299 event pairs, 30576 based on Foata normal form. 0/23654 useless extension candidates. Maximal degree in co-relation 43122. Up to 22430 conditions per place. [2023-09-01 08:24:42,120 INFO L137 encePairwiseOnDemand]: 478/490 looper letters, 87 selfloop transitions, 4 changer transitions 0/95 dead transitions. [2023-09-01 08:24:42,121 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 95 transitions, 414 flow [2023-09-01 08:24:42,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:24:42,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:24:42,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 721 transitions. [2023-09-01 08:24:42,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49047619047619045 [2023-09-01 08:24:42,139 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 721 transitions. [2023-09-01 08:24:42,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 721 transitions. [2023-09-01 08:24:42,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:24:42,145 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 721 transitions. [2023-09-01 08:24:42,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 240.33333333333334) internal successors, (721), 3 states have internal predecessors, (721), 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) [2023-09-01 08:24:42,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 490.0) internal successors, (1960), 4 states have internal predecessors, (1960), 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) [2023-09-01 08:24:42,158 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 490.0) internal successors, (1960), 4 states have internal predecessors, (1960), 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) [2023-09-01 08:24:42,159 INFO L175 Difference]: Start difference. First operand has 64 places, 56 transitions, 133 flow. Second operand 3 states and 721 transitions. [2023-09-01 08:24:42,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 95 transitions, 414 flow [2023-09-01 08:24:42,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 95 transitions, 388 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-09-01 08:24:42,237 INFO L231 Difference]: Finished difference. Result has 57 places, 55 transitions, 148 flow [2023-09-01 08:24:42,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=490, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=57, PETRI_TRANSITIONS=55} [2023-09-01 08:24:42,246 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -7 predicate places. [2023-09-01 08:24:42,246 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 55 transitions, 148 flow [2023-09-01 08:24:42,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 206.66666666666666) internal successors, (620), 3 states have internal predecessors, (620), 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) [2023-09-01 08:24:42,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:24:42,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 08:24:42,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 08:24:42,249 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-09-01 08:24:42,256 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:24:42,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1093092, now seen corresponding path program 1 times [2023-09-01 08:24:42,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:24:42,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881935657] [2023-09-01 08:24:42,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:24:42,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:24:42,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:24:42,404 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:24:42,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:24:42,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881935657] [2023-09-01 08:24:42,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881935657] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:24:42,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870426648] [2023-09-01 08:24:42,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:24:42,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:24:42,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:24:42,409 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) [2023-09-01 08:24:42,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 08:24:42,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:24:42,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:24:42,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:24:42,532 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:24:42,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:24:42,545 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:24:42,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870426648] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:24:42,546 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:24:42,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-09-01 08:24:42,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901640655] [2023-09-01 08:24:42,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:24:42,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 08:24:42,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:24:42,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 08:24:42,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 08:24:42,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 490 [2023-09-01 08:24:42,620 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 55 transitions, 148 flow. Second operand has 7 states, 7 states have (on average 207.14285714285714) internal successors, (1450), 7 states have internal predecessors, (1450), 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) [2023-09-01 08:24:42,620 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:24:42,620 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 490 [2023-09-01 08:24:42,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:24:49,841 INFO L130 PetriNetUnfolder]: 86912/116091 cut-off events. [2023-09-01 08:24:49,841 INFO L131 PetriNetUnfolder]: For 165/165 co-relation queries the response was YES. [2023-09-01 08:24:50,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234844 conditions, 116091 events. 86912/116091 cut-off events. For 165/165 co-relation queries the response was YES. Maximal size of possible extension queue 5707. Compared 753451 event pairs, 76440 based on Foata normal form. 0/59145 useless extension candidates. Maximal degree in co-relation 187831. Up to 22428 conditions per place. [2023-09-01 08:24:50,511 INFO L137 encePairwiseOnDemand]: 482/490 looper letters, 205 selfloop transitions, 21 changer transitions 0/230 dead transitions. [2023-09-01 08:24:50,512 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 230 transitions, 1018 flow [2023-09-01 08:24:50,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 08:24:50,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 08:24:50,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1674 transitions. [2023-09-01 08:24:50,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4880466472303207 [2023-09-01 08:24:50,517 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1674 transitions. [2023-09-01 08:24:50,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1674 transitions. [2023-09-01 08:24:50,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:24:50,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1674 transitions. [2023-09-01 08:24:50,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 239.14285714285714) internal successors, (1674), 7 states have internal predecessors, (1674), 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) [2023-09-01 08:24:50,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 490.0) internal successors, (3920), 8 states have internal predecessors, (3920), 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) [2023-09-01 08:24:50,530 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 490.0) internal successors, (3920), 8 states have internal predecessors, (3920), 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) [2023-09-01 08:24:50,531 INFO L175 Difference]: Start difference. First operand has 57 places, 55 transitions, 148 flow. Second operand 7 states and 1674 transitions. [2023-09-01 08:24:50,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 230 transitions, 1018 flow [2023-09-01 08:24:50,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 230 transitions, 1004 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:24:50,535 INFO L231 Difference]: Finished difference. Result has 64 places, 70 transitions, 279 flow [2023-09-01 08:24:50,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=490, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=279, PETRI_PLACES=64, PETRI_TRANSITIONS=70} [2023-09-01 08:24:50,536 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 0 predicate places. [2023-09-01 08:24:50,536 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 70 transitions, 279 flow [2023-09-01 08:24:50,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 207.14285714285714) internal successors, (1450), 7 states have internal predecessors, (1450), 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) [2023-09-01 08:24:50,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:24:50,538 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-09-01 08:24:50,543 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-09-01 08:24:50,742 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 [2023-09-01 08:24:50,743 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-09-01 08:24:50,744 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:24:50,744 INFO L85 PathProgramCache]: Analyzing trace with hash 33887218, now seen corresponding path program 1 times [2023-09-01 08:24:50,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:24:50,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89830074] [2023-09-01 08:24:50,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:24:50,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:24:50,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:24:50,815 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:24:50,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:24:50,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89830074] [2023-09-01 08:24:50,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89830074] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:24:50,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857540022] [2023-09-01 08:24:50,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:24:50,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:24:50,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:24:50,818 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) [2023-09-01 08:24:50,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 08:24:50,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:24:50,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 08:24:50,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:24:50,951 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:24:50,951 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:24:50,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857540022] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:24:50,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:24:50,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-09-01 08:24:50,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920731383] [2023-09-01 08:24:50,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:24:50,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 08:24:50,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:24:50,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 08:24:50,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-09-01 08:24:50,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 490 [2023-09-01 08:24:50,992 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 70 transitions, 279 flow. Second operand has 5 states, 5 states have (on average 206.8) internal successors, (1034), 5 states have internal predecessors, (1034), 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) [2023-09-01 08:24:50,992 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:24:50,992 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 490 [2023-09-01 08:24:50,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:24:58,080 INFO L130 PetriNetUnfolder]: 86906/116083 cut-off events. [2023-09-01 08:24:58,080 INFO L131 PetriNetUnfolder]: For 168/168 co-relation queries the response was YES. [2023-09-01 08:24:58,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234846 conditions, 116083 events. 86906/116083 cut-off events. For 168/168 co-relation queries the response was YES. Maximal size of possible extension queue 5241. Compared 745143 event pairs, 76440 based on Foata normal form. 2/59147 useless extension candidates. Maximal degree in co-relation 140888. Up to 67273 conditions per place. [2023-09-01 08:24:58,898 INFO L137 encePairwiseOnDemand]: 484/490 looper letters, 129 selfloop transitions, 9 changer transitions 0/142 dead transitions. [2023-09-01 08:24:58,899 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 142 transitions, 677 flow [2023-09-01 08:24:58,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 08:24:58,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 08:24:58,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1166 transitions. [2023-09-01 08:24:58,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47591836734693876 [2023-09-01 08:24:58,902 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1166 transitions. [2023-09-01 08:24:58,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1166 transitions. [2023-09-01 08:24:58,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:24:58,903 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1166 transitions. [2023-09-01 08:24:58,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 233.2) internal successors, (1166), 5 states have internal predecessors, (1166), 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) [2023-09-01 08:24:58,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 490.0) internal successors, (2940), 6 states have internal predecessors, (2940), 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) [2023-09-01 08:24:58,912 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 490.0) internal successors, (2940), 6 states have internal predecessors, (2940), 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) [2023-09-01 08:24:58,912 INFO L175 Difference]: Start difference. First operand has 64 places, 70 transitions, 279 flow. Second operand 5 states and 1166 transitions. [2023-09-01 08:24:58,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 142 transitions, 677 flow [2023-09-01 08:24:58,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 142 transitions, 658 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-09-01 08:24:58,916 INFO L231 Difference]: Finished difference. Result has 64 places, 62 transitions, 224 flow [2023-09-01 08:24:58,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=490, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=224, PETRI_PLACES=64, PETRI_TRANSITIONS=62} [2023-09-01 08:24:58,917 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 0 predicate places. [2023-09-01 08:24:58,917 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 62 transitions, 224 flow [2023-09-01 08:24:58,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 206.8) internal successors, (1034), 5 states have internal predecessors, (1034), 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) [2023-09-01 08:24:58,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:24:58,918 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-09-01 08:24:58,925 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-09-01 08:24:59,122 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,SelfDestructingSolverStorable2 [2023-09-01 08:24:59,123 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-09-01 08:24:59,124 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:24:59,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1794079151, now seen corresponding path program 2 times [2023-09-01 08:24:59,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:24:59,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552214461] [2023-09-01 08:24:59,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:24:59,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:24:59,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:24:59,245 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:24:59,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:24:59,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552214461] [2023-09-01 08:24:59,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552214461] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:24:59,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161194319] [2023-09-01 08:24:59,247 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:24:59,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:24:59,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:24:59,248 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) [2023-09-01 08:24:59,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-01 08:24:59,326 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 08:24:59,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:24:59,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 08:24:59,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:24:59,345 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-09-01 08:24:59,345 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:24:59,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161194319] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:24:59,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:24:59,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-09-01 08:24:59,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95115434] [2023-09-01 08:24:59,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:24:59,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:24:59,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:24:59,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:24:59,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-09-01 08:24:59,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 490 [2023-09-01 08:24:59,369 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 62 transitions, 224 flow. Second operand has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 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) [2023-09-01 08:24:59,369 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:24:59,369 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 490 [2023-09-01 08:24:59,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:25:06,209 INFO L130 PetriNetUnfolder]: 86906/116082 cut-off events. [2023-09-01 08:25:06,210 INFO L131 PetriNetUnfolder]: For 174/174 co-relation queries the response was YES. [2023-09-01 08:25:06,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234839 conditions, 116082 events. 86906/116082 cut-off events. For 174/174 co-relation queries the response was YES. Maximal size of possible extension queue 5741. Compared 753367 event pairs, 76440 based on Foata normal form. 1/59143 useless extension candidates. Maximal degree in co-relation 187817. Up to 112117 conditions per place. [2023-09-01 08:25:06,782 INFO L137 encePairwiseOnDemand]: 487/490 looper letters, 51 selfloop transitions, 6 changer transitions 0/61 dead transitions. [2023-09-01 08:25:06,782 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 61 transitions, 328 flow [2023-09-01 08:25:06,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:25:06,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:25:06,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 670 transitions. [2023-09-01 08:25:06,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4557823129251701 [2023-09-01 08:25:06,785 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 670 transitions. [2023-09-01 08:25:06,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 670 transitions. [2023-09-01 08:25:06,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:25:06,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 670 transitions. [2023-09-01 08:25:06,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 223.33333333333334) internal successors, (670), 3 states have internal predecessors, (670), 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) [2023-09-01 08:25:06,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 490.0) internal successors, (1960), 4 states have internal predecessors, (1960), 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) [2023-09-01 08:25:06,791 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 490.0) internal successors, (1960), 4 states have internal predecessors, (1960), 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) [2023-09-01 08:25:06,791 INFO L175 Difference]: Start difference. First operand has 64 places, 62 transitions, 224 flow. Second operand 3 states and 670 transitions. [2023-09-01 08:25:06,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 61 transitions, 328 flow [2023-09-01 08:25:06,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 61 transitions, 315 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 08:25:06,794 INFO L231 Difference]: Finished difference. Result has 62 places, 61 transitions, 213 flow [2023-09-01 08:25:06,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=490, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=213, PETRI_PLACES=62, PETRI_TRANSITIONS=61} [2023-09-01 08:25:06,794 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -2 predicate places. [2023-09-01 08:25:06,795 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 61 transitions, 213 flow [2023-09-01 08:25:06,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 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) [2023-09-01 08:25:06,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:25:06,796 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-09-01 08:25:06,805 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-09-01 08:25:07,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:25:07,001 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-09-01 08:25:07,002 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:25:07,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1166701737, now seen corresponding path program 1 times [2023-09-01 08:25:07,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:25:07,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489424573] [2023-09-01 08:25:07,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:25:07,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:25:07,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:25:07,118 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:25:07,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:25:07,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489424573] [2023-09-01 08:25:07,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489424573] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:25:07,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794603522] [2023-09-01 08:25:07,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:25:07,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:25:07,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:25:07,123 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) [2023-09-01 08:25:07,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-09-01 08:25:07,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:25:07,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 7 conjunts are in the unsatisfiable core [2023-09-01 08:25:07,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:25:07,246 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:25:07,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:25:07,295 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:25:07,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794603522] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:25:07,296 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:25:07,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-09-01 08:25:07,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578577425] [2023-09-01 08:25:07,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:25:07,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 08:25:07,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:25:07,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 08:25:07,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-09-01 08:25:07,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 490 [2023-09-01 08:25:07,387 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 61 transitions, 213 flow. Second operand has 13 states, 13 states have (on average 207.15384615384616) internal successors, (2693), 13 states have internal predecessors, (2693), 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) [2023-09-01 08:25:07,387 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:25:07,387 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 490 [2023-09-01 08:25:07,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:25:23,231 INFO L130 PetriNetUnfolder]: 191192/255378 cut-off events. [2023-09-01 08:25:23,231 INFO L131 PetriNetUnfolder]: For 397/397 co-relation queries the response was YES. [2023-09-01 08:25:23,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 516616 conditions, 255378 events. 191192/255378 cut-off events. For 397/397 co-relation queries the response was YES. Maximal size of possible extension queue 8163. Compared 1739326 event pairs, 168168 based on Foata normal form. 6/130126 useless extension candidates. Maximal degree in co-relation 516512. Up to 22433 conditions per place. [2023-09-01 08:25:24,635 INFO L137 encePairwiseOnDemand]: 485/490 looper letters, 444 selfloop transitions, 31 changer transitions 0/479 dead transitions. [2023-09-01 08:25:24,635 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 479 transitions, 2163 flow [2023-09-01 08:25:24,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 08:25:24,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 08:25:24,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2953 transitions. [2023-09-01 08:25:24,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5022108843537415 [2023-09-01 08:25:24,642 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2953 transitions. [2023-09-01 08:25:24,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2953 transitions. [2023-09-01 08:25:24,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:25:24,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2953 transitions. [2023-09-01 08:25:24,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 246.08333333333334) internal successors, (2953), 12 states have internal predecessors, (2953), 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) [2023-09-01 08:25:24,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 490.0) internal successors, (6370), 13 states have internal predecessors, (6370), 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) [2023-09-01 08:25:24,658 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 490.0) internal successors, (6370), 13 states have internal predecessors, (6370), 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) [2023-09-01 08:25:24,659 INFO L175 Difference]: Start difference. First operand has 62 places, 61 transitions, 213 flow. Second operand 12 states and 2953 transitions. [2023-09-01 08:25:24,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 479 transitions, 2163 flow [2023-09-01 08:25:24,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 479 transitions, 2139 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:25:24,665 INFO L231 Difference]: Finished difference. Result has 77 places, 79 transitions, 417 flow [2023-09-01 08:25:24,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=490, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=417, PETRI_PLACES=77, PETRI_TRANSITIONS=79} [2023-09-01 08:25:24,666 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 13 predicate places. [2023-09-01 08:25:24,666 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 79 transitions, 417 flow [2023-09-01 08:25:24,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 207.15384615384616) internal successors, (2693), 13 states have internal predecessors, (2693), 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) [2023-09-01 08:25:24,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:25:24,668 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:25:24,677 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-09-01 08:25:24,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:25:24,874 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-09-01 08:25:24,874 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:25:24,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1180376725, now seen corresponding path program 1 times [2023-09-01 08:25:24,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:25:24,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811198077] [2023-09-01 08:25:24,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:25:24,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:25:24,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:25:24,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:25:24,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:25:24,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811198077] [2023-09-01 08:25:24,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811198077] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:25:24,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:25:24,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:25:24,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676925461] [2023-09-01 08:25:24,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:25:24,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:25:24,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:25:24,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:25:24,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 08:25:24,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 490 [2023-09-01 08:25:24,950 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 79 transitions, 417 flow. Second operand has 4 states, 4 states have (on average 207.75) internal successors, (831), 4 states have internal predecessors, (831), 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) [2023-09-01 08:25:24,950 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:25:24,950 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 490 [2023-09-01 08:25:24,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:25:37,951 INFO L130 PetriNetUnfolder]: 154188/208672 cut-off events. [2023-09-01 08:25:37,952 INFO L131 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2023-09-01 08:25:38,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 428898 conditions, 208672 events. 154188/208672 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 5553. Compared 1476446 event pairs, 15015 based on Foata normal form. 0/110310 useless extension candidates. Maximal degree in co-relation 350885. Up to 184602 conditions per place. [2023-09-01 08:25:39,176 INFO L137 encePairwiseOnDemand]: 486/490 looper letters, 99 selfloop transitions, 2 changer transitions 0/103 dead transitions. [2023-09-01 08:25:39,176 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 103 transitions, 671 flow [2023-09-01 08:25:39,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 08:25:39,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 08:25:39,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 898 transitions. [2023-09-01 08:25:39,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45816326530612245 [2023-09-01 08:25:39,179 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 898 transitions. [2023-09-01 08:25:39,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 898 transitions. [2023-09-01 08:25:39,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:25:39,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 898 transitions. [2023-09-01 08:25:39,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 224.5) internal successors, (898), 4 states have internal predecessors, (898), 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) [2023-09-01 08:25:39,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 490.0) internal successors, (2450), 5 states have internal predecessors, (2450), 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) [2023-09-01 08:25:39,185 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 490.0) internal successors, (2450), 5 states have internal predecessors, (2450), 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) [2023-09-01 08:25:39,185 INFO L175 Difference]: Start difference. First operand has 77 places, 79 transitions, 417 flow. Second operand 4 states and 898 transitions. [2023-09-01 08:25:39,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 103 transitions, 671 flow [2023-09-01 08:25:39,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 103 transitions, 581 flow, removed 26 selfloop flow, removed 5 redundant places. [2023-09-01 08:25:39,190 INFO L231 Difference]: Finished difference. Result has 73 places, 77 transitions, 327 flow [2023-09-01 08:25:39,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=490, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=327, PETRI_PLACES=73, PETRI_TRANSITIONS=77} [2023-09-01 08:25:39,193 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 9 predicate places. [2023-09-01 08:25:39,193 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 77 transitions, 327 flow [2023-09-01 08:25:39,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 207.75) internal successors, (831), 4 states have internal predecessors, (831), 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) [2023-09-01 08:25:39,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:25:39,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:25:39,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 08:25:39,194 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-09-01 08:25:39,194 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:25:39,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1180376607, now seen corresponding path program 1 times [2023-09-01 08:25:39,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:25:39,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714452249] [2023-09-01 08:25:39,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:25:39,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:25:39,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:25:39,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:25:39,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:25:39,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714452249] [2023-09-01 08:25:39,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714452249] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:25:39,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:25:39,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:25:39,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007725663] [2023-09-01 08:25:39,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:25:39,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:25:39,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:25:39,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:25:39,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 08:25:39,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 490 [2023-09-01 08:25:39,357 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 77 transitions, 327 flow. Second operand has 4 states, 4 states have (on average 203.5) internal successors, (814), 4 states have internal predecessors, (814), 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) [2023-09-01 08:25:39,357 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:25:39,357 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 490 [2023-09-01 08:25:39,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:25:51,072 INFO L130 PetriNetUnfolder]: 133970/182856 cut-off events. [2023-09-01 08:25:51,072 INFO L131 PetriNetUnfolder]: For 388/388 co-relation queries the response was YES. [2023-09-01 08:25:51,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 373185 conditions, 182856 events. 133970/182856 cut-off events. For 388/388 co-relation queries the response was YES. Maximal size of possible extension queue 6049. Compared 1278815 event pairs, 116677 based on Foata normal form. 1672/110399 useless extension candidates. Maximal degree in co-relation 305292. Up to 156069 conditions per place. [2023-09-01 08:25:52,390 INFO L137 encePairwiseOnDemand]: 482/490 looper letters, 109 selfloop transitions, 3 changer transitions 0/116 dead transitions. [2023-09-01 08:25:52,391 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 116 transitions, 701 flow [2023-09-01 08:25:52,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 08:25:52,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 08:25:52,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 887 transitions. [2023-09-01 08:25:52,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45255102040816325 [2023-09-01 08:25:52,394 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 887 transitions. [2023-09-01 08:25:52,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 887 transitions. [2023-09-01 08:25:52,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:25:52,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 887 transitions. [2023-09-01 08:25:52,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 221.75) internal successors, (887), 4 states have internal predecessors, (887), 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) [2023-09-01 08:25:52,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 490.0) internal successors, (2450), 5 states have internal predecessors, (2450), 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) [2023-09-01 08:25:52,399 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 490.0) internal successors, (2450), 5 states have internal predecessors, (2450), 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) [2023-09-01 08:25:52,399 INFO L175 Difference]: Start difference. First operand has 73 places, 77 transitions, 327 flow. Second operand 4 states and 887 transitions. [2023-09-01 08:25:52,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 116 transitions, 701 flow [2023-09-01 08:25:52,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 116 transitions, 698 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:25:52,404 INFO L231 Difference]: Finished difference. Result has 75 places, 77 transitions, 341 flow [2023-09-01 08:25:52,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=490, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=341, PETRI_PLACES=75, PETRI_TRANSITIONS=77} [2023-09-01 08:25:52,405 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 11 predicate places. [2023-09-01 08:25:52,405 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 77 transitions, 341 flow [2023-09-01 08:25:52,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 203.5) internal successors, (814), 4 states have internal predecessors, (814), 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) [2023-09-01 08:25:52,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:25:52,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:25:52,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 08:25:52,406 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-09-01 08:25:52,406 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:25:52,406 INFO L85 PathProgramCache]: Analyzing trace with hash -865880660, now seen corresponding path program 1 times [2023-09-01 08:25:52,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:25:52,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671810472] [2023-09-01 08:25:52,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:25:52,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:25:52,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:25:52,511 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:25:52,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:25:52,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671810472] [2023-09-01 08:25:52,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671810472] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:25:52,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806126243] [2023-09-01 08:25:52,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:25:52,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:25:52,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:25:52,517 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) [2023-09-01 08:25:52,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-09-01 08:25:52,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:25:52,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:25:52,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:25:52,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:25:52,636 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:25:52,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806126243] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:25:52,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:25:52,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-09-01 08:25:52,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234886545] [2023-09-01 08:25:52,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:25:52,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:25:52,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:25:52,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:25:52,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-09-01 08:25:52,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 490 [2023-09-01 08:25:52,642 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 77 transitions, 341 flow. Second operand has 3 states, 3 states have (on average 212.33333333333334) internal successors, (637), 3 states have internal predecessors, (637), 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) [2023-09-01 08:25:52,642 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:25:52,642 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 490 [2023-09-01 08:25:52,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:26:02,052 INFO L130 PetriNetUnfolder]: 107196/146556 cut-off events. [2023-09-01 08:26:02,052 INFO L131 PetriNetUnfolder]: For 8869/8869 co-relation queries the response was YES. [2023-09-01 08:26:02,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 313007 conditions, 146556 events. 107196/146556 cut-off events. For 8869/8869 co-relation queries the response was YES. Maximal size of possible extension queue 5140. Compared 1011959 event pairs, 91927 based on Foata normal form. 0/94581 useless extension candidates. Maximal degree in co-relation 270473. Up to 141012 conditions per place. [2023-09-01 08:26:03,044 INFO L137 encePairwiseOnDemand]: 487/490 looper letters, 70 selfloop transitions, 1 changer transitions 0/75 dead transitions. [2023-09-01 08:26:03,044 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 75 transitions, 475 flow [2023-09-01 08:26:03,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:26:03,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:26:03,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 673 transitions. [2023-09-01 08:26:03,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45782312925170066 [2023-09-01 08:26:03,046 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 673 transitions. [2023-09-01 08:26:03,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 673 transitions. [2023-09-01 08:26:03,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:26:03,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 673 transitions. [2023-09-01 08:26:03,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 224.33333333333334) internal successors, (673), 3 states have internal predecessors, (673), 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) [2023-09-01 08:26:03,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 490.0) internal successors, (1960), 4 states have internal predecessors, (1960), 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) [2023-09-01 08:26:03,050 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 490.0) internal successors, (1960), 4 states have internal predecessors, (1960), 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) [2023-09-01 08:26:03,050 INFO L175 Difference]: Start difference. First operand has 75 places, 77 transitions, 341 flow. Second operand 3 states and 673 transitions. [2023-09-01 08:26:03,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 75 transitions, 475 flow [2023-09-01 08:26:03,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 75 transitions, 469 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-09-01 08:26:03,071 INFO L231 Difference]: Finished difference. Result has 74 places, 75 transitions, 329 flow [2023-09-01 08:26:03,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=490, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=329, PETRI_PLACES=74, PETRI_TRANSITIONS=75} [2023-09-01 08:26:03,071 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 10 predicate places. [2023-09-01 08:26:03,072 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 75 transitions, 329 flow [2023-09-01 08:26:03,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 212.33333333333334) internal successors, (637), 3 states have internal predecessors, (637), 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) [2023-09-01 08:26:03,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:26:03,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:26:03,085 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-09-01 08:26:03,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:26:03,279 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-09-01 08:26:03,279 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:26:03,279 INFO L85 PathProgramCache]: Analyzing trace with hash -865880544, now seen corresponding path program 1 times [2023-09-01 08:26:03,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:26:03,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095775040] [2023-09-01 08:26:03,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:26:03,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:26:03,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:26:03,322 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:26:03,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:26:03,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095775040] [2023-09-01 08:26:03,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095775040] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:26:03,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:26:03,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:26:03,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216953074] [2023-09-01 08:26:03,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:26:03,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:26:03,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:26:03,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:26:03,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:26:03,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 490 [2023-09-01 08:26:03,330 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 75 transitions, 329 flow. Second operand has 3 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 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) [2023-09-01 08:26:03,331 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:26:03,331 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 490 [2023-09-01 08:26:03,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:26:10,991 INFO L130 PetriNetUnfolder]: 89310/124369 cut-off events. [2023-09-01 08:26:10,991 INFO L131 PetriNetUnfolder]: For 2887/2887 co-relation queries the response was YES. [2023-09-01 08:26:11,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 270336 conditions, 124369 events. 89310/124369 cut-off events. For 2887/2887 co-relation queries the response was YES. Maximal size of possible extension queue 3364. Compared 846224 event pairs, 61754 based on Foata normal form. 0/88047 useless extension candidates. Maximal degree in co-relation 270316. Up to 94296 conditions per place. [2023-09-01 08:26:11,769 INFO L137 encePairwiseOnDemand]: 487/490 looper letters, 93 selfloop transitions, 2 changer transitions 0/98 dead transitions. [2023-09-01 08:26:11,769 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 98 transitions, 569 flow [2023-09-01 08:26:11,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:26:11,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:26:11,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 690 transitions. [2023-09-01 08:26:11,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46938775510204084 [2023-09-01 08:26:11,771 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 690 transitions. [2023-09-01 08:26:11,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 690 transitions. [2023-09-01 08:26:11,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:26:11,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 690 transitions. [2023-09-01 08:26:11,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 230.0) internal successors, (690), 3 states have internal predecessors, (690), 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) [2023-09-01 08:26:11,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 490.0) internal successors, (1960), 4 states have internal predecessors, (1960), 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) [2023-09-01 08:26:11,774 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 490.0) internal successors, (1960), 4 states have internal predecessors, (1960), 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) [2023-09-01 08:26:11,774 INFO L175 Difference]: Start difference. First operand has 74 places, 75 transitions, 329 flow. Second operand 3 states and 690 transitions. [2023-09-01 08:26:11,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 98 transitions, 569 flow [2023-09-01 08:26:11,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 98 transitions, 568 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:26:11,788 INFO L231 Difference]: Finished difference. Result has 74 places, 74 transitions, 328 flow [2023-09-01 08:26:11,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=490, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=328, PETRI_PLACES=74, PETRI_TRANSITIONS=74} [2023-09-01 08:26:11,788 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 10 predicate places. [2023-09-01 08:26:11,788 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 74 transitions, 328 flow [2023-09-01 08:26:11,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 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) [2023-09-01 08:26:11,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:26:11,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:26:11,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 08:26:11,790 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-09-01 08:26:11,790 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:26:11,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1347219226, now seen corresponding path program 1 times [2023-09-01 08:26:11,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:26:11,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147454964] [2023-09-01 08:26:11,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:26:11,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:26:11,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:26:11,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:26:11,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:26:11,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147454964] [2023-09-01 08:26:11,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147454964] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:26:11,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:26:11,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:26:11,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198468508] [2023-09-01 08:26:11,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:26:11,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:26:11,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:26:11,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:26:11,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:26:11,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 490 [2023-09-01 08:26:11,876 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 74 transitions, 328 flow. Second operand has 3 states, 3 states have (on average 211.33333333333334) internal successors, (634), 3 states have internal predecessors, (634), 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) [2023-09-01 08:26:11,876 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:26:11,877 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 490 [2023-09-01 08:26:11,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:26:19,843 INFO L130 PetriNetUnfolder]: 85262/119155 cut-off events. [2023-09-01 08:26:19,843 INFO L131 PetriNetUnfolder]: For 27494/27494 co-relation queries the response was YES. [2023-09-01 08:26:20,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269555 conditions, 119155 events. 85262/119155 cut-off events. For 27494/27494 co-relation queries the response was YES. Maximal size of possible extension queue 3604. Compared 830285 event pairs, 37114 based on Foata normal form. 2002/95087 useless extension candidates. Maximal degree in co-relation 269535. Up to 75945 conditions per place. [2023-09-01 08:26:20,783 INFO L137 encePairwiseOnDemand]: 487/490 looper letters, 94 selfloop transitions, 2 changer transitions 0/100 dead transitions. [2023-09-01 08:26:20,784 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 100 transitions, 585 flow [2023-09-01 08:26:20,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:26:20,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:26:20,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 691 transitions. [2023-09-01 08:26:20,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47006802721088436 [2023-09-01 08:26:20,785 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 691 transitions. [2023-09-01 08:26:20,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 691 transitions. [2023-09-01 08:26:20,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:26:20,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 691 transitions. [2023-09-01 08:26:20,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 230.33333333333334) internal successors, (691), 3 states have internal predecessors, (691), 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) [2023-09-01 08:26:20,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 490.0) internal successors, (1960), 4 states have internal predecessors, (1960), 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) [2023-09-01 08:26:20,790 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 490.0) internal successors, (1960), 4 states have internal predecessors, (1960), 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) [2023-09-01 08:26:20,790 INFO L175 Difference]: Start difference. First operand has 74 places, 74 transitions, 328 flow. Second operand 3 states and 691 transitions. [2023-09-01 08:26:20,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 100 transitions, 585 flow [2023-09-01 08:26:20,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 100 transitions, 577 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:26:20,830 INFO L231 Difference]: Finished difference. Result has 75 places, 75 transitions, 338 flow [2023-09-01 08:26:20,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=490, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=338, PETRI_PLACES=75, PETRI_TRANSITIONS=75} [2023-09-01 08:26:20,831 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 11 predicate places. [2023-09-01 08:26:20,831 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 75 transitions, 338 flow [2023-09-01 08:26:20,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 211.33333333333334) internal successors, (634), 3 states have internal predecessors, (634), 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) [2023-09-01 08:26:20,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:26:20,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:26:20,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 08:26:20,833 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-09-01 08:26:20,837 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:26:20,837 INFO L85 PathProgramCache]: Analyzing trace with hash 395608853, now seen corresponding path program 1 times [2023-09-01 08:26:20,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:26:20,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584801803] [2023-09-01 08:26:20,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:26:20,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:26:20,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:26:20,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:26:20,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:26:20,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584801803] [2023-09-01 08:26:20,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584801803] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:26:20,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:26:20,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 08:26:20,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706107106] [2023-09-01 08:26:20,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:26:20,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:26:20,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:26:20,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:26:20,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:26:20,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 490 [2023-09-01 08:26:20,943 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 75 transitions, 338 flow. Second operand has 3 states, 3 states have (on average 209.33333333333334) internal successors, (628), 3 states have internal predecessors, (628), 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) [2023-09-01 08:26:20,943 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:26:20,943 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 490 [2023-09-01 08:26:20,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:26:27,342 INFO L130 PetriNetUnfolder]: 72722/101621 cut-off events. [2023-09-01 08:26:27,342 INFO L131 PetriNetUnfolder]: For 28638/28638 co-relation queries the response was YES. [2023-09-01 08:26:27,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227218 conditions, 101621 events. 72722/101621 cut-off events. For 28638/28638 co-relation queries the response was YES. Maximal size of possible extension queue 2803. Compared 674734 event pairs, 28424 based on Foata normal form. 0/72383 useless extension candidates. Maximal degree in co-relation 227196. Up to 63471 conditions per place. [2023-09-01 08:26:28,020 INFO L137 encePairwiseOnDemand]: 482/490 looper letters, 92 selfloop transitions, 4 changer transitions 0/100 dead transitions. [2023-09-01 08:26:28,020 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 100 transitions, 594 flow [2023-09-01 08:26:28,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:26:28,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:26:28,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 687 transitions. [2023-09-01 08:26:28,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4673469387755102 [2023-09-01 08:26:28,022 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 687 transitions. [2023-09-01 08:26:28,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 687 transitions. [2023-09-01 08:26:28,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:26:28,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 687 transitions. [2023-09-01 08:26:28,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 229.0) internal successors, (687), 3 states have internal predecessors, (687), 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) [2023-09-01 08:26:28,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 490.0) internal successors, (1960), 4 states have internal predecessors, (1960), 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) [2023-09-01 08:26:28,026 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 490.0) internal successors, (1960), 4 states have internal predecessors, (1960), 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) [2023-09-01 08:26:28,026 INFO L175 Difference]: Start difference. First operand has 75 places, 75 transitions, 338 flow. Second operand 3 states and 687 transitions. [2023-09-01 08:26:28,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 100 transitions, 594 flow [2023-09-01 08:26:28,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 100 transitions, 584 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-09-01 08:26:28,046 INFO L231 Difference]: Finished difference. Result has 77 places, 78 transitions, 364 flow [2023-09-01 08:26:28,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=490, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=364, PETRI_PLACES=77, PETRI_TRANSITIONS=78} [2023-09-01 08:26:28,047 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 13 predicate places. [2023-09-01 08:26:28,047 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 78 transitions, 364 flow [2023-09-01 08:26:28,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 209.33333333333334) internal successors, (628), 3 states have internal predecessors, (628), 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) [2023-09-01 08:26:28,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:26:28,048 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:26:28,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 08:26:28,048 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-09-01 08:26:28,048 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:26:28,049 INFO L85 PathProgramCache]: Analyzing trace with hash -620926558, now seen corresponding path program 1 times [2023-09-01 08:26:28,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:26:28,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652690124] [2023-09-01 08:26:28,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:26:28,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:26:28,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:26:28,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:26:28,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:26:28,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652690124] [2023-09-01 08:26:28,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652690124] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:26:28,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:26:28,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:26:28,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861989345] [2023-09-01 08:26:28,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:26:28,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:26:28,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:26:28,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:26:28,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:26:28,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 490 [2023-09-01 08:26:28,163 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 78 transitions, 364 flow. Second operand has 3 states, 3 states have (on average 212.66666666666666) internal successors, (638), 3 states have internal predecessors, (638), 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) [2023-09-01 08:26:28,163 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:26:28,163 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 490 [2023-09-01 08:26:28,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:26:35,041 INFO L130 PetriNetUnfolder]: 72722/100895 cut-off events. [2023-09-01 08:26:35,041 INFO L131 PetriNetUnfolder]: For 14008/14008 co-relation queries the response was YES. [2023-09-01 08:26:35,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 235734 conditions, 100895 events. 72722/100895 cut-off events. For 14008/14008 co-relation queries the response was YES. Maximal size of possible extension queue 2767. Compared 659658 event pairs, 58806 based on Foata normal form. 0/76431 useless extension candidates. Maximal degree in co-relation 235710. Up to 98230 conditions per place. [2023-09-01 08:26:35,647 INFO L137 encePairwiseOnDemand]: 488/490 looper letters, 71 selfloop transitions, 1 changer transitions 2/77 dead transitions. [2023-09-01 08:26:35,647 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 77 transitions, 510 flow [2023-09-01 08:26:35,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:26:35,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:26:35,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 668 transitions. [2023-09-01 08:26:35,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.454421768707483 [2023-09-01 08:26:35,649 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 668 transitions. [2023-09-01 08:26:35,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 668 transitions. [2023-09-01 08:26:35,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:26:35,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 668 transitions. [2023-09-01 08:26:35,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 222.66666666666666) internal successors, (668), 3 states have internal predecessors, (668), 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) [2023-09-01 08:26:35,652 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 490.0) internal successors, (1960), 4 states have internal predecessors, (1960), 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) [2023-09-01 08:26:35,652 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 490.0) internal successors, (1960), 4 states have internal predecessors, (1960), 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) [2023-09-01 08:26:35,652 INFO L175 Difference]: Start difference. First operand has 77 places, 78 transitions, 364 flow. Second operand 3 states and 668 transitions. [2023-09-01 08:26:35,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 77 transitions, 510 flow [2023-09-01 08:26:35,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 77 transitions, 506 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:26:35,672 INFO L231 Difference]: Finished difference. Result has 77 places, 75 transitions, 355 flow [2023-09-01 08:26:35,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=490, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=355, PETRI_PLACES=77, PETRI_TRANSITIONS=75} [2023-09-01 08:26:35,672 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 13 predicate places. [2023-09-01 08:26:35,673 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 75 transitions, 355 flow [2023-09-01 08:26:35,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 212.66666666666666) internal successors, (638), 3 states have internal predecessors, (638), 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) [2023-09-01 08:26:35,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:26:35,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:26:35,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 08:26:35,674 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-09-01 08:26:35,674 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:26:35,674 INFO L85 PathProgramCache]: Analyzing trace with hash 2046667896, now seen corresponding path program 1 times [2023-09-01 08:26:35,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:26:35,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651682928] [2023-09-01 08:26:35,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:26:35,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:26:35,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:26:35,775 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:26:35,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:26:35,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651682928] [2023-09-01 08:26:35,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651682928] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:26:35,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:26:35,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 08:26:35,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500521069] [2023-09-01 08:26:35,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:26:35,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:26:35,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:26:35,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:26:35,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 08:26:35,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 490 [2023-09-01 08:26:35,828 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 75 transitions, 355 flow. Second operand has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 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) [2023-09-01 08:26:35,829 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:26:35,829 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 490 [2023-09-01 08:26:35,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:26:42,078 INFO L130 PetriNetUnfolder]: 67636/93869 cut-off events. [2023-09-01 08:26:42,079 INFO L131 PetriNetUnfolder]: For 13070/13070 co-relation queries the response was YES. [2023-09-01 08:26:42,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 216969 conditions, 93869 events. 67636/93869 cut-off events. For 13070/13070 co-relation queries the response was YES. Maximal size of possible extension queue 2611. Compared 608296 event pairs, 54902 based on Foata normal form. 144/71585 useless extension candidates. Maximal degree in co-relation 216945. Up to 89097 conditions per place. [2023-09-01 08:26:42,838 INFO L137 encePairwiseOnDemand]: 481/490 looper letters, 60 selfloop transitions, 12 changer transitions 23/98 dead transitions. [2023-09-01 08:26:42,838 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 98 transitions, 608 flow [2023-09-01 08:26:42,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 08:26:42,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 08:26:42,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 875 transitions. [2023-09-01 08:26:42,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44642857142857145 [2023-09-01 08:26:42,840 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 875 transitions. [2023-09-01 08:26:42,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 875 transitions. [2023-09-01 08:26:42,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:26:42,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 875 transitions. [2023-09-01 08:26:42,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 218.75) internal successors, (875), 4 states have internal predecessors, (875), 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) [2023-09-01 08:26:42,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 490.0) internal successors, (2450), 5 states have internal predecessors, (2450), 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) [2023-09-01 08:26:42,845 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 490.0) internal successors, (2450), 5 states have internal predecessors, (2450), 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) [2023-09-01 08:26:42,845 INFO L175 Difference]: Start difference. First operand has 77 places, 75 transitions, 355 flow. Second operand 4 states and 875 transitions. [2023-09-01 08:26:42,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 98 transitions, 608 flow [2023-09-01 08:26:42,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 98 transitions, 606 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:26:42,852 INFO L231 Difference]: Finished difference. Result has 79 places, 75 transitions, 404 flow [2023-09-01 08:26:42,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=490, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=404, PETRI_PLACES=79, PETRI_TRANSITIONS=75} [2023-09-01 08:26:42,853 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 15 predicate places. [2023-09-01 08:26:42,853 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 75 transitions, 404 flow [2023-09-01 08:26:42,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 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) [2023-09-01 08:26:42,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:26:42,854 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1] [2023-09-01 08:26:42,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 08:26:42,854 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-09-01 08:26:42,854 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:26:42,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1190312759, now seen corresponding path program 2 times [2023-09-01 08:26:42,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:26:42,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328787003] [2023-09-01 08:26:42,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:26:42,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:26:42,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:26:43,018 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:26:43,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:26:43,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328787003] [2023-09-01 08:26:43,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328787003] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:26:43,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612332069] [2023-09-01 08:26:43,019 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:26:43,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:26:43,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:26:43,021 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) [2023-09-01 08:26:43,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-09-01 08:26:43,145 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 08:26:43,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:26:43,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 08:26:43,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:26:43,181 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-09-01 08:26:43,181 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:26:43,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612332069] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:26:43,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:26:43,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [12] total 14 [2023-09-01 08:26:43,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994941059] [2023-09-01 08:26:43,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:26:43,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:26:43,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:26:43,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:26:43,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2023-09-01 08:26:43,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 490 [2023-09-01 08:26:43,209 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 75 transitions, 404 flow. Second operand has 4 states, 4 states have (on average 207.0) internal successors, (828), 4 states have internal predecessors, (828), 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) [2023-09-01 08:26:43,211 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:26:43,211 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 490 [2023-09-01 08:26:43,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:26:48,514 INFO L130 PetriNetUnfolder]: 54432/75765 cut-off events. [2023-09-01 08:26:48,515 INFO L131 PetriNetUnfolder]: For 12811/12811 co-relation queries the response was YES. [2023-09-01 08:26:48,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181697 conditions, 75765 events. 54432/75765 cut-off events. For 12811/12811 co-relation queries the response was YES. Maximal size of possible extension queue 2163. Compared 485108 event pairs, 43780 based on Foata normal form. 2/60087 useless extension candidates. Maximal degree in co-relation 181671. Up to 73605 conditions per place. [2023-09-01 08:26:49,000 INFO L137 encePairwiseOnDemand]: 486/490 looper letters, 67 selfloop transitions, 1 changer transitions 1/72 dead transitions. [2023-09-01 08:26:49,001 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 72 transitions, 512 flow [2023-09-01 08:26:49,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:26:49,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:26:49,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 656 transitions. [2023-09-01 08:26:49,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44625850340136053 [2023-09-01 08:26:49,003 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 656 transitions. [2023-09-01 08:26:49,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 656 transitions. [2023-09-01 08:26:49,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:26:49,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 656 transitions. [2023-09-01 08:26:49,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 218.66666666666666) internal successors, (656), 3 states have internal predecessors, (656), 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) [2023-09-01 08:26:49,008 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 490.0) internal successors, (1960), 4 states have internal predecessors, (1960), 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) [2023-09-01 08:26:49,008 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 490.0) internal successors, (1960), 4 states have internal predecessors, (1960), 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) [2023-09-01 08:26:49,008 INFO L175 Difference]: Start difference. First operand has 79 places, 75 transitions, 404 flow. Second operand 3 states and 656 transitions. [2023-09-01 08:26:49,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 72 transitions, 512 flow [2023-09-01 08:26:49,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 72 transitions, 413 flow, removed 8 selfloop flow, removed 13 redundant places. [2023-09-01 08:26:49,449 INFO L231 Difference]: Finished difference. Result has 64 places, 71 transitions, 270 flow [2023-09-01 08:26:49,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=490, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=270, PETRI_PLACES=64, PETRI_TRANSITIONS=71} [2023-09-01 08:26:49,450 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 0 predicate places. [2023-09-01 08:26:49,450 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 71 transitions, 270 flow [2023-09-01 08:26:49,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 207.0) internal successors, (828), 4 states have internal predecessors, (828), 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) [2023-09-01 08:26:49,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:26:49,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:26:49,455 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-09-01 08:26:49,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:26:49,651 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-09-01 08:26:49,651 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:26:49,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1774565287, now seen corresponding path program 1 times [2023-09-01 08:26:49,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:26:49,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395038593] [2023-09-01 08:26:49,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:26:49,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:26:49,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:26:50,578 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:26:50,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:26:50,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395038593] [2023-09-01 08:26:50,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395038593] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:26:50,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513656876] [2023-09-01 08:26:50,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:26:50,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:26:50,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:26:50,580 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:26:50,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-09-01 08:26:50,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:26:50,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 13 conjunts are in the unsatisfiable core [2023-09-01 08:26:50,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:26:50,764 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 08:26:50,764 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:26:50,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513656876] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:26:50,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:26:50,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 11 [2023-09-01 08:26:50,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277708495] [2023-09-01 08:26:50,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:26:50,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 08:26:50,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:26:50,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 08:26:50,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-09-01 08:26:50,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 490 [2023-09-01 08:26:50,808 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 71 transitions, 270 flow. Second operand has 5 states, 5 states have (on average 201.6) internal successors, (1008), 5 states have internal predecessors, (1008), 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) [2023-09-01 08:26:50,808 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:26:50,808 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 490 [2023-09-01 08:26:50,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:26:57,399 INFO L130 PetriNetUnfolder]: 74771/103773 cut-off events. [2023-09-01 08:26:57,399 INFO L131 PetriNetUnfolder]: For 15509/15509 co-relation queries the response was YES. [2023-09-01 08:26:57,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 241932 conditions, 103773 events. 74771/103773 cut-off events. For 15509/15509 co-relation queries the response was YES. Maximal size of possible extension queue 3266. Compared 696211 event pairs, 15620 based on Foata normal form. 0/82873 useless extension candidates. Maximal degree in co-relation 241917. Up to 52991 conditions per place. [2023-09-01 08:26:57,907 INFO L137 encePairwiseOnDemand]: 482/490 looper letters, 113 selfloop transitions, 8 changer transitions 9/133 dead transitions. [2023-09-01 08:26:57,907 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 133 transitions, 691 flow [2023-09-01 08:26:57,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 08:26:57,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 08:26:57,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1094 transitions. [2023-09-01 08:26:57,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.446530612244898 [2023-09-01 08:26:57,910 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1094 transitions. [2023-09-01 08:26:57,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1094 transitions. [2023-09-01 08:26:57,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:26:57,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1094 transitions. [2023-09-01 08:26:57,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 218.8) internal successors, (1094), 5 states have internal predecessors, (1094), 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) [2023-09-01 08:26:57,913 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 490.0) internal successors, (2940), 6 states have internal predecessors, (2940), 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) [2023-09-01 08:26:57,914 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 490.0) internal successors, (2940), 6 states have internal predecessors, (2940), 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) [2023-09-01 08:26:57,914 INFO L175 Difference]: Start difference. First operand has 64 places, 71 transitions, 270 flow. Second operand 5 states and 1094 transitions. [2023-09-01 08:26:57,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 133 transitions, 691 flow [2023-09-01 08:26:57,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 133 transitions, 688 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-09-01 08:26:57,919 INFO L231 Difference]: Finished difference. Result has 68 places, 77 transitions, 325 flow [2023-09-01 08:26:57,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=490, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=325, PETRI_PLACES=68, PETRI_TRANSITIONS=77} [2023-09-01 08:26:57,920 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 4 predicate places. [2023-09-01 08:26:57,920 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 77 transitions, 325 flow [2023-09-01 08:26:57,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 201.6) internal successors, (1008), 5 states have internal predecessors, (1008), 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) [2023-09-01 08:26:57,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:26:57,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:26:57,926 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-09-01 08:26:58,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:26:58,121 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-09-01 08:26:58,122 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:26:58,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1834935308, now seen corresponding path program 1 times [2023-09-01 08:26:58,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:26:58,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303568997] [2023-09-01 08:26:58,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:26:58,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:26:58,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:26:58,516 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:26:58,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:26:58,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303568997] [2023-09-01 08:26:58,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303568997] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:26:58,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434703423] [2023-09-01 08:26:58,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:26:58,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:26:58,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:26:58,521 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:26:58,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-09-01 08:26:58,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:26:58,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 32 conjunts are in the unsatisfiable core [2023-09-01 08:26:58,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:26:58,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:26:58,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:26:58,747 INFO L321 Elim1Store]: treesize reduction 95, result has 34.0 percent of original size [2023-09-01 08:26:58,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 54 [2023-09-01 08:26:58,817 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-09-01 08:26:58,867 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 08:26:58,868 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-09-01 08:26:58,903 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-09-01 08:26:58,935 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-09-01 08:26:59,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:26:59,014 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-09-01 08:26:59,065 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:26:59,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:26:59,444 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:26:59,445 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 51 [2023-09-01 08:26:59,463 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:26:59,464 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 216 treesize of output 208 [2023-09-01 08:26:59,476 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 112 [2023-09-01 08:26:59,492 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:26:59,492 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 123 treesize of output 119 [2023-09-01 08:26:59,506 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:26:59,506 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 164 treesize of output 148 [2023-09-01 08:26:59,947 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:26:59,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434703423] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:26:59,947 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:26:59,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 22 [2023-09-01 08:26:59,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379324315] [2023-09-01 08:26:59,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:26:59,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-09-01 08:26:59,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:26:59,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-09-01 08:26:59,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=457, Unknown=9, NotChecked=0, Total=552 [2023-09-01 08:27:00,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 490 [2023-09-01 08:27:00,834 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 77 transitions, 325 flow. Second operand has 24 states, 24 states have (on average 152.625) internal successors, (3663), 24 states have internal predecessors, (3663), 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) [2023-09-01 08:27:00,834 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:27:00,834 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 490 [2023-09-01 08:27:00,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:27:13,121 WARN L222 SmtUtils]: Spent 12.23s on a formula simplification. DAG size of input: 79 DAG size of output: 74 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-09-01 08:27:48,904 INFO L130 PetriNetUnfolder]: 350819/484988 cut-off events. [2023-09-01 08:27:48,905 INFO L131 PetriNetUnfolder]: For 195969/196419 co-relation queries the response was YES. [2023-09-01 08:27:50,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1227101 conditions, 484988 events. 350819/484988 cut-off events. For 195969/196419 co-relation queries the response was YES. Maximal size of possible extension queue 14662. Compared 3853162 event pairs, 49787 based on Foata normal form. 11352/398279 useless extension candidates. Maximal degree in co-relation 1227083. Up to 93997 conditions per place. [2023-09-01 08:27:52,109 INFO L137 encePairwiseOnDemand]: 468/490 looper letters, 402 selfloop transitions, 112 changer transitions 23/540 dead transitions. [2023-09-01 08:27:52,109 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 540 transitions, 2891 flow [2023-09-01 08:27:52,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-09-01 08:27:52,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-09-01 08:27:52,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 5007 transitions. [2023-09-01 08:27:52,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34061224489795916 [2023-09-01 08:27:52,118 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 5007 transitions. [2023-09-01 08:27:52,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 5007 transitions. [2023-09-01 08:27:52,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:27:52,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 5007 transitions. [2023-09-01 08:27:52,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 166.9) internal successors, (5007), 30 states have internal predecessors, (5007), 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) [2023-09-01 08:27:52,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 490.0) internal successors, (15190), 31 states have internal predecessors, (15190), 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) [2023-09-01 08:27:52,136 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 490.0) internal successors, (15190), 31 states have internal predecessors, (15190), 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) [2023-09-01 08:27:52,137 INFO L175 Difference]: Start difference. First operand has 68 places, 77 transitions, 325 flow. Second operand 30 states and 5007 transitions. [2023-09-01 08:27:52,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 540 transitions, 2891 flow [2023-09-01 08:27:55,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 540 transitions, 2887 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:27:55,241 INFO L231 Difference]: Finished difference. Result has 117 places, 199 transitions, 1406 flow [2023-09-01 08:27:55,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=490, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1406, PETRI_PLACES=117, PETRI_TRANSITIONS=199} [2023-09-01 08:27:55,242 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 53 predicate places. [2023-09-01 08:27:55,242 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 199 transitions, 1406 flow [2023-09-01 08:27:55,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 152.625) internal successors, (3663), 24 states have internal predecessors, (3663), 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) [2023-09-01 08:27:55,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:27:55,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:27:55,247 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-09-01 08:27:55,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-09-01 08:27:55,444 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-09-01 08:27:55,444 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:27:55,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1774565331, now seen corresponding path program 1 times [2023-09-01 08:27:55,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:27:55,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407064202] [2023-09-01 08:27:55,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:27:55,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:27:55,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:27:56,309 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:27:56,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:27:56,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407064202] [2023-09-01 08:27:56,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407064202] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:27:56,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032536092] [2023-09-01 08:27:56,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:27:56,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:27:56,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:27:56,313 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:27:56,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-09-01 08:27:56,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:27:56,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 21 conjunts are in the unsatisfiable core [2023-09-01 08:27:56,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:27:56,661 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:27:56,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:27:56,714 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:27:56,715 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2023-09-01 08:27:56,886 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:27:56,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032536092] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:27:56,886 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:27:56,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 20 [2023-09-01 08:27:56,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490177542] [2023-09-01 08:27:56,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:27:56,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-09-01 08:27:56,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:27:56,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-09-01 08:27:56,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462 [2023-09-01 08:27:58,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 490 [2023-09-01 08:27:58,527 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 199 transitions, 1406 flow. Second operand has 22 states, 22 states have (on average 169.9090909090909) internal successors, (3738), 22 states have internal predecessors, (3738), 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) [2023-09-01 08:27:58,527 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:27:58,527 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 490 [2023-09-01 08:27:58,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:29:06,037 INFO L130 PetriNetUnfolder]: 435560/598649 cut-off events. [2023-09-01 08:29:06,037 INFO L131 PetriNetUnfolder]: For 2872484/2872544 co-relation queries the response was YES. [2023-09-01 08:29:10,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2346821 conditions, 598649 events. 435560/598649 cut-off events. For 2872484/2872544 co-relation queries the response was YES. Maximal size of possible extension queue 18450. Compared 4780802 event pairs, 75077 based on Foata normal form. 0/502408 useless extension candidates. Maximal degree in co-relation 2346781. Up to 209851 conditions per place. [2023-09-01 08:29:13,381 INFO L137 encePairwiseOnDemand]: 479/490 looper letters, 446 selfloop transitions, 111 changer transitions 16/575 dead transitions. [2023-09-01 08:29:13,381 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 575 transitions, 4586 flow [2023-09-01 08:29:13,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-09-01 08:29:13,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-09-01 08:29:13,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 4796 transitions. [2023-09-01 08:29:13,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37645211930926215 [2023-09-01 08:29:13,388 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 4796 transitions. [2023-09-01 08:29:13,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 4796 transitions. [2023-09-01 08:29:13,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:29:13,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 4796 transitions. [2023-09-01 08:29:13,394 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 184.46153846153845) internal successors, (4796), 26 states have internal predecessors, (4796), 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) [2023-09-01 08:29:13,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 490.0) internal successors, (13230), 27 states have internal predecessors, (13230), 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) [2023-09-01 08:29:13,403 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 490.0) internal successors, (13230), 27 states have internal predecessors, (13230), 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) [2023-09-01 08:29:13,404 INFO L175 Difference]: Start difference. First operand has 117 places, 199 transitions, 1406 flow. Second operand 26 states and 4796 transitions. [2023-09-01 08:29:13,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 575 transitions, 4586 flow [2023-09-01 08:36:28,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 575 transitions, 4466 flow, removed 59 selfloop flow, removed 1 redundant places. [2023-09-01 08:36:28,071 INFO L231 Difference]: Finished difference. Result has 153 places, 246 transitions, 2133 flow [2023-09-01 08:36:28,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=490, PETRI_DIFFERENCE_MINUEND_FLOW=1300, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2133, PETRI_PLACES=153, PETRI_TRANSITIONS=246} [2023-09-01 08:36:28,072 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 89 predicate places. [2023-09-01 08:36:28,077 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 246 transitions, 2133 flow [2023-09-01 08:36:28,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 169.9090909090909) internal successors, (3738), 22 states have internal predecessors, (3738), 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) [2023-09-01 08:36:28,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:36:28,077 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:36:28,085 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-09-01 08:36:28,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-09-01 08:36:28,278 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-09-01 08:36:28,279 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:36:28,279 INFO L85 PathProgramCache]: Analyzing trace with hash 872532459, now seen corresponding path program 1 times [2023-09-01 08:36:28,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:36:28,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329463680] [2023-09-01 08:36:28,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:36:28,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:36:28,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:36:28,337 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-09-01 08:36:28,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:36:28,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329463680] [2023-09-01 08:36:28,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329463680] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:36:28,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:36:28,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 08:36:28,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439885817] [2023-09-01 08:36:28,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:36:28,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:36:28,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:36:28,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:36:28,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:36:28,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 490 [2023-09-01 08:36:28,343 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 246 transitions, 2133 flow. Second operand has 3 states, 3 states have (on average 215.33333333333334) internal successors, (646), 3 states have internal predecessors, (646), 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) [2023-09-01 08:36:28,343 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:36:28,343 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 490 [2023-09-01 08:36:28,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand