./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-queue-add-3.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --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-queue-add-3.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 6990ac65798f2c5a95ce01b01bd39640075d7bea37e69dff3da0d3d7c4b56ab2 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 11:59:41,659 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 11:59:41,661 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 11:59:41,686 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 11:59:41,687 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 11:59:41,688 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 11:59:41,689 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 11:59:41,690 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 11:59:41,691 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 11:59:41,692 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 11:59:41,693 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 11:59:41,694 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 11:59:41,694 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 11:59:41,695 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 11:59:41,696 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 11:59:41,697 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 11:59:41,697 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 11:59:41,698 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 11:59:41,700 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 11:59:41,701 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 11:59:41,702 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 11:59:41,713 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 11:59:41,715 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 11:59:41,716 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 11:59:41,723 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 11:59:41,729 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 11:59:41,729 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 11:59:41,730 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 11:59:41,731 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 11:59:41,732 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 11:59:41,732 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 11:59:41,733 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 11:59:41,736 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 11:59:41,737 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 11:59:41,738 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 11:59:41,738 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 11:59:41,739 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 11:59:41,739 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 11:59:41,739 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 11:59:41,740 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 11:59:41,741 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 11:59:41,742 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 11:59:41,773 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 11:59:41,774 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 11:59:41,775 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 11:59:41,775 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 11:59:41,775 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 11:59:41,776 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 11:59:41,776 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 11:59:41,776 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 11:59:41,777 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 11:59:41,777 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 11:59:41,777 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 11:59:41,778 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 11:59:41,778 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 11:59:41,778 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 11:59:41,778 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 11:59:41,778 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 11:59:41,779 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 11:59:41,779 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 11:59:41,779 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 11:59:41,779 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 11:59:41,779 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 11:59:41,780 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 11:59:41,780 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 11:59:41,780 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 11:59:41,780 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 11:59:41,780 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 11:59:41,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:59:41,781 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 11:59:41,781 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 11:59:41,781 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 11:59:41,781 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 11:59:41,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 11:59:41,782 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 11:59:41,782 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 11:59:41,782 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 11:59:41,782 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 11:59:41,783 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 11:59:41,783 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6990ac65798f2c5a95ce01b01bd39640075d7bea37e69dff3da0d3d7c4b56ab2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 11:59:42,035 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 11:59:42,056 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 11:59:42,058 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 11:59:42,059 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 11:59:42,059 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 11:59:42,061 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-queue-add-3.wvr.c [2023-08-30 11:59:43,101 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 11:59:43,287 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 11:59:43,287 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-queue-add-3.wvr.c [2023-08-30 11:59:43,293 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a35bfb38/456a53eb08d741c18bf66e3168ce32a1/FLAGe8409abf9 [2023-08-30 11:59:43,308 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a35bfb38/456a53eb08d741c18bf66e3168ce32a1 [2023-08-30 11:59:43,311 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 11:59:43,313 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 11:59:43,316 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 11:59:43,316 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 11:59:43,319 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 11:59:43,319 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:59:43" (1/1) ... [2023-08-30 11:59:43,322 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25df2e16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:59:43, skipping insertion in model container [2023-08-30 11:59:43,323 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:59:43" (1/1) ... [2023-08-30 11:59:43,328 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 11:59:43,351 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 11:59:43,494 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-queue-add-3.wvr.c[3412,3425] [2023-08-30 11:59:43,499 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:59:43,506 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 11:59:43,529 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-queue-add-3.wvr.c[3412,3425] [2023-08-30 11:59:43,531 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:59:43,538 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 11:59:43,538 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 11:59:43,543 INFO L208 MainTranslator]: Completed translation [2023-08-30 11:59:43,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:59:43 WrapperNode [2023-08-30 11:59:43,544 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 11:59:43,545 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 11:59:43,545 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 11:59:43,545 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 11:59:43,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:59:43" (1/1) ... [2023-08-30 11:59:43,558 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:59:43" (1/1) ... [2023-08-30 11:59:43,583 INFO L138 Inliner]: procedures = 25, calls = 55, calls flagged for inlining = 16, calls inlined = 18, statements flattened = 272 [2023-08-30 11:59:43,583 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 11:59:43,584 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 11:59:43,584 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 11:59:43,584 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 11:59:43,592 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:59:43" (1/1) ... [2023-08-30 11:59:43,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:59:43" (1/1) ... [2023-08-30 11:59:43,595 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:59:43" (1/1) ... [2023-08-30 11:59:43,595 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:59:43" (1/1) ... [2023-08-30 11:59:43,602 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:59:43" (1/1) ... [2023-08-30 11:59:43,605 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:59:43" (1/1) ... [2023-08-30 11:59:43,607 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:59:43" (1/1) ... [2023-08-30 11:59:43,608 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:59:43" (1/1) ... [2023-08-30 11:59:43,611 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 11:59:43,612 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 11:59:43,612 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 11:59:43,612 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 11:59:43,612 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:59:43" (1/1) ... [2023-08-30 11:59:43,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:59:43,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:59:43,642 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 11:59:43,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 11:59:43,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 11:59:43,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 11:59:43,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 11:59:43,702 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 11:59:43,702 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 11:59:43,702 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 11:59:43,702 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 11:59:43,703 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 11:59:43,703 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 11:59:43,703 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 11:59:43,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 11:59:43,703 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 11:59:43,703 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 11:59:43,703 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 11:59:43,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 11:59:43,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 11:59:43,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 11:59:43,705 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 11:59:43,804 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 11:59:43,806 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 11:59:44,219 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 11:59:44,396 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 11:59:44,396 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-08-30 11:59:44,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:59:44 BoogieIcfgContainer [2023-08-30 11:59:44,399 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 11:59:44,401 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 11:59:44,401 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 11:59:44,403 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 11:59:44,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 11:59:43" (1/3) ... [2023-08-30 11:59:44,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@440abbf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:59:44, skipping insertion in model container [2023-08-30 11:59:44,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:59:43" (2/3) ... [2023-08-30 11:59:44,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@440abbf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:59:44, skipping insertion in model container [2023-08-30 11:59:44,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:59:44" (3/3) ... [2023-08-30 11:59:44,406 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-queue-add-3.wvr.c [2023-08-30 11:59:44,413 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 11:59:44,421 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 11:59:44,421 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2023-08-30 11:59:44,421 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 11:59:44,504 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 11:59:44,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 221 places, 229 transitions, 482 flow [2023-08-30 11:59:44,655 INFO L130 PetriNetUnfolder]: 18/226 cut-off events. [2023-08-30 11:59:44,655 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 11:59:44,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 226 events. 18/226 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 227 event pairs, 0 based on Foata normal form. 0/188 useless extension candidates. Maximal degree in co-relation 186. Up to 3 conditions per place. [2023-08-30 11:59:44,662 INFO L82 GeneralOperation]: Start removeDead. Operand has 221 places, 229 transitions, 482 flow [2023-08-30 11:59:44,671 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 201 places, 208 transitions, 431 flow [2023-08-30 11:59:44,674 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 11:59:44,685 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 201 places, 208 transitions, 431 flow [2023-08-30 11:59:44,688 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 201 places, 208 transitions, 431 flow [2023-08-30 11:59:44,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 201 places, 208 transitions, 431 flow [2023-08-30 11:59:44,736 INFO L130 PetriNetUnfolder]: 17/208 cut-off events. [2023-08-30 11:59:44,737 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 11:59:44,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 220 conditions, 208 events. 17/208 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 225 event pairs, 0 based on Foata normal form. 0/171 useless extension candidates. Maximal degree in co-relation 186. Up to 3 conditions per place. [2023-08-30 11:59:44,742 INFO L119 LiptonReduction]: Number of co-enabled transitions 3252 [2023-08-30 11:59:52,434 INFO L134 LiptonReduction]: Checked pairs total: 6101 [2023-08-30 11:59:52,434 INFO L136 LiptonReduction]: Total number of compositions: 218 [2023-08-30 11:59:52,444 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 11:59:52,449 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;@45afb432, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 11:59:52,449 INFO L358 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2023-08-30 11:59:52,452 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 11:59:52,452 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 11:59:52,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:59:52,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 11:59:52,454 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 11:59:52,460 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:59:52,460 INFO L85 PathProgramCache]: Analyzing trace with hash 33767, now seen corresponding path program 1 times [2023-08-30 11:59:52,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:59:52,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595689497] [2023-08-30 11:59:52,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:59:52,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:59:52,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:59:52,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:59:52,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:59:52,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595689497] [2023-08-30 11:59:52,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595689497] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:59:52,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:59:52,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:59:52,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310543000] [2023-08-30 11:59:52,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:59:52,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:59:52,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:59:52,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:59:52,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:59:52,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 447 [2023-08-30 11:59:52,843 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 107 flow. Second operand has 3 states, 3 states have (on average 188.66666666666666) internal successors, (566), 3 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:59:52,843 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:59:52,843 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 447 [2023-08-30 11:59:52,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:59:53,819 INFO L130 PetriNetUnfolder]: 6213/8035 cut-off events. [2023-08-30 11:59:53,821 INFO L131 PetriNetUnfolder]: For 212/212 co-relation queries the response was YES. [2023-08-30 11:59:53,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16382 conditions, 8035 events. 6213/8035 cut-off events. For 212/212 co-relation queries the response was YES. Maximal size of possible extension queue 768. Compared 38906 event pairs, 3335 based on Foata normal form. 0/2647 useless extension candidates. Maximal degree in co-relation 7334. Up to 3991 conditions per place. [2023-08-30 11:59:53,875 INFO L137 encePairwiseOnDemand]: 433/447 looper letters, 65 selfloop transitions, 4 changer transitions 0/72 dead transitions. [2023-08-30 11:59:53,876 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 72 transitions, 312 flow [2023-08-30 11:59:53,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:59:53,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:59:53,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 649 transitions. [2023-08-30 11:59:53,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48396718866517524 [2023-08-30 11:59:53,894 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 649 transitions. [2023-08-30 11:59:53,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 649 transitions. [2023-08-30 11:59:53,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:59:53,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 649 transitions. [2023-08-30 11:59:53,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 216.33333333333334) internal successors, (649), 3 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:59:53,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 447.0) internal successors, (1788), 4 states have internal predecessors, (1788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:59:53,912 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 447.0) internal successors, (1788), 4 states have internal predecessors, (1788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:59:53,913 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 107 flow. Second operand 3 states and 649 transitions. [2023-08-30 11:59:53,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 72 transitions, 312 flow [2023-08-30 11:59:53,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 72 transitions, 294 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 11:59:53,923 INFO L231 Difference]: Finished difference. Result has 44 places, 43 transitions, 122 flow [2023-08-30 11:59:53,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=447, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=44, PETRI_TRANSITIONS=43} [2023-08-30 11:59:53,929 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -6 predicate places. [2023-08-30 11:59:53,931 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 43 transitions, 122 flow [2023-08-30 11:59:53,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 188.66666666666666) internal successors, (566), 3 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:59:53,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:59:53,932 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 11:59:53,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 11:59:53,933 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 11:59:53,933 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:59:53,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1047808, now seen corresponding path program 1 times [2023-08-30 11:59:53,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:59:53,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964858291] [2023-08-30 11:59:53,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:59:53,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:59:53,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:59:54,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:59:54,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:59:54,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964858291] [2023-08-30 11:59:54,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964858291] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:59:54,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546931878] [2023-08-30 11:59:54,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:59:54,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:59:54,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:59:54,077 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:59:54,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 11:59:54,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:59:54,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:59:54,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:59:54,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:59:54,186 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:59:54,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546931878] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:59:54,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:59:54,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 11:59:54,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517744433] [2023-08-30 11:59:54,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:59:54,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:59:54,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:59:54,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:59:54,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 11:59:54,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 447 [2023-08-30 11:59:54,213 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 43 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 188.75) internal successors, (755), 4 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:59:54,213 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:59:54,213 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 447 [2023-08-30 11:59:54,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:59:55,102 INFO L130 PetriNetUnfolder]: 6213/8033 cut-off events. [2023-08-30 11:59:55,102 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-30 11:59:55,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16266 conditions, 8033 events. 6213/8033 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 768. Compared 38847 event pairs, 3335 based on Foata normal form. 0/2651 useless extension candidates. Maximal degree in co-relation 8127. Up to 3991 conditions per place. [2023-08-30 11:59:55,142 INFO L137 encePairwiseOnDemand]: 441/447 looper letters, 63 selfloop transitions, 4 changer transitions 0/70 dead transitions. [2023-08-30 11:59:55,142 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 70 transitions, 312 flow [2023-08-30 11:59:55,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 11:59:55,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 11:59:55,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 821 transitions. [2023-08-30 11:59:55,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45917225950782997 [2023-08-30 11:59:55,145 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 821 transitions. [2023-08-30 11:59:55,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 821 transitions. [2023-08-30 11:59:55,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:59:55,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 821 transitions. [2023-08-30 11:59:55,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 205.25) internal successors, (821), 4 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:59:55,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 447.0) internal successors, (2235), 5 states have internal predecessors, (2235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:59:55,151 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 447.0) internal successors, (2235), 5 states have internal predecessors, (2235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:59:55,151 INFO L175 Difference]: Start difference. First operand has 44 places, 43 transitions, 122 flow. Second operand 4 states and 821 transitions. [2023-08-30 11:59:55,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 70 transitions, 312 flow [2023-08-30 11:59:55,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 70 transitions, 304 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:59:55,154 INFO L231 Difference]: Finished difference. Result has 43 places, 41 transitions, 114 flow [2023-08-30 11:59:55,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=447, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=114, PETRI_PLACES=43, PETRI_TRANSITIONS=41} [2023-08-30 11:59:55,155 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -7 predicate places. [2023-08-30 11:59:55,155 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 41 transitions, 114 flow [2023-08-30 11:59:55,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 188.75) internal successors, (755), 4 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:59:55,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:59:55,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 11:59:55,168 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 11:59:55,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:59:55,362 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 11:59:55,363 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:59:55,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1047810, now seen corresponding path program 1 times [2023-08-30 11:59:55,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:59:55,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207521802] [2023-08-30 11:59:55,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:59:55,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:59:55,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:59:55,442 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:59:55,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:59:55,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207521802] [2023-08-30 11:59:55,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207521802] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:59:55,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832093903] [2023-08-30 11:59:55,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:59:55,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:59:55,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:59:55,448 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:59:55,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 11:59:55,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:59:55,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:59:55,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:59:55,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:59:55,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:59:55,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:59:55,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832093903] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:59:55,535 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:59:55,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 11:59:55,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947721196] [2023-08-30 11:59:55,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:59:55,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 11:59:55,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:59:55,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 11:59:55,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 11:59:55,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 447 [2023-08-30 11:59:55,589 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 41 transitions, 114 flow. Second operand has 7 states, 7 states have (on average 189.14285714285714) internal successors, (1324), 7 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:59:55,589 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:59:55,589 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 447 [2023-08-30 11:59:55,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:59:57,672 INFO L130 PetriNetUnfolder]: 15519/20066 cut-off events. [2023-08-30 11:59:57,672 INFO L131 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2023-08-30 11:59:57,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40617 conditions, 20066 events. 15519/20066 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 1442. Compared 108010 event pairs, 8336 based on Foata normal form. 0/6677 useless extension candidates. Maximal degree in co-relation 32443. Up to 3994 conditions per place. [2023-08-30 11:59:57,748 INFO L137 encePairwiseOnDemand]: 441/447 looper letters, 150 selfloop transitions, 13 changer transitions 0/166 dead transitions. [2023-08-30 11:59:57,748 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 166 transitions, 738 flow [2023-08-30 11:59:57,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 11:59:57,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 11:59:57,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1297 transitions. [2023-08-30 11:59:57,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4835943325876212 [2023-08-30 11:59:57,752 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1297 transitions. [2023-08-30 11:59:57,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1297 transitions. [2023-08-30 11:59:57,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:59:57,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1297 transitions. [2023-08-30 11:59:57,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 216.16666666666666) internal successors, (1297), 6 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:59:57,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 447.0) internal successors, (3129), 7 states have internal predecessors, (3129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:59:57,760 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 447.0) internal successors, (3129), 7 states have internal predecessors, (3129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:59:57,760 INFO L175 Difference]: Start difference. First operand has 43 places, 41 transitions, 114 flow. Second operand 6 states and 1297 transitions. [2023-08-30 11:59:57,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 166 transitions, 738 flow [2023-08-30 11:59:57,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 166 transitions, 730 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:59:57,763 INFO L231 Difference]: Finished difference. Result has 49 places, 50 transitions, 205 flow [2023-08-30 11:59:57,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=447, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=205, PETRI_PLACES=49, PETRI_TRANSITIONS=50} [2023-08-30 11:59:57,764 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -1 predicate places. [2023-08-30 11:59:57,764 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 50 transitions, 205 flow [2023-08-30 11:59:57,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 189.14285714285714) internal successors, (1324), 7 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:59:57,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:59:57,765 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 11:59:57,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 11:59:57,970 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 [2023-08-30 11:59:57,971 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 11:59:57,971 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:59:57,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1151500841, now seen corresponding path program 2 times [2023-08-30 11:59:57,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:59:57,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501175367] [2023-08-30 11:59:57,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:59:57,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:59:57,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:59:58,081 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:59:58,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:59:58,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501175367] [2023-08-30 11:59:58,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501175367] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:59:58,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163150513] [2023-08-30 11:59:58,083 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 11:59:58,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:59:58,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:59:58,084 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:59:58,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 11:59:58,155 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 11:59:58,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:59:58,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 11:59:58,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:59:58,171 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 11:59:58,171 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:59:58,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163150513] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:59:58,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:59:58,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 11:59:58,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730691835] [2023-08-30 11:59:58,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:59:58,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:59:58,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:59:58,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:59:58,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 11:59:58,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 447 [2023-08-30 11:59:58,193 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 50 transitions, 205 flow. Second operand has 3 states, 3 states have (on average 191.0) internal successors, (573), 3 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:59:58,194 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:59:58,194 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 447 [2023-08-30 11:59:58,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:00:00,010 INFO L130 PetriNetUnfolder]: 15551/20097 cut-off events. [2023-08-30 12:00:00,010 INFO L131 PetriNetUnfolder]: For 43/43 co-relation queries the response was YES. [2023-08-30 12:00:00,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40707 conditions, 20097 events. 15551/20097 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 1550. Compared 108843 event pairs, 8340 based on Foata normal form. 1/6543 useless extension candidates. Maximal degree in co-relation 32521. Up to 19952 conditions per place. [2023-08-30 12:00:00,085 INFO L137 encePairwiseOnDemand]: 444/447 looper letters, 40 selfloop transitions, 6 changer transitions 0/49 dead transitions. [2023-08-30 12:00:00,085 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 49 transitions, 287 flow [2023-08-30 12:00:00,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:00:00,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:00:00,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 605 transitions. [2023-08-30 12:00:00,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4511558538404176 [2023-08-30 12:00:00,087 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 605 transitions. [2023-08-30 12:00:00,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 605 transitions. [2023-08-30 12:00:00,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:00:00,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 605 transitions. [2023-08-30 12:00:00,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 201.66666666666666) internal successors, (605), 3 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:00:00,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 447.0) internal successors, (1788), 4 states have internal predecessors, (1788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:00:00,092 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 447.0) internal successors, (1788), 4 states have internal predecessors, (1788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:00:00,093 INFO L175 Difference]: Start difference. First operand has 49 places, 50 transitions, 205 flow. Second operand 3 states and 605 transitions. [2023-08-30 12:00:00,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 49 transitions, 287 flow [2023-08-30 12:00:00,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 49 transitions, 268 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 12:00:00,095 INFO L231 Difference]: Finished difference. Result has 49 places, 49 transitions, 188 flow [2023-08-30 12:00:00,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=447, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=49, PETRI_TRANSITIONS=49} [2023-08-30 12:00:00,096 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -1 predicate places. [2023-08-30 12:00:00,096 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 49 transitions, 188 flow [2023-08-30 12:00:00,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 191.0) internal successors, (573), 3 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:00:00,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:00:00,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 12:00:00,107 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 12:00:00,302 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 [2023-08-30 12:00:00,302 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 12:00:00,303 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:00:00,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1173794815, now seen corresponding path program 1 times [2023-08-30 12:00:00,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:00:00,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609513614] [2023-08-30 12:00:00,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:00:00,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:00:00,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:00:00,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:00:00,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:00:00,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609513614] [2023-08-30 12:00:00,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609513614] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:00:00,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:00:00,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:00:00,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693067969] [2023-08-30 12:00:00,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:00:00,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:00:00,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:00:00,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:00:00,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:00:00,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 447 [2023-08-30 12:00:00,375 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 49 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 194.0) internal successors, (582), 3 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:00:00,375 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:00:00,375 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 447 [2023-08-30 12:00:00,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:00:02,530 INFO L130 PetriNetUnfolder]: 21321/28687 cut-off events. [2023-08-30 12:00:02,530 INFO L131 PetriNetUnfolder]: For 52/52 co-relation queries the response was YES. [2023-08-30 12:00:02,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58248 conditions, 28687 events. 21321/28687 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 2372. Compared 180669 event pairs, 8425 based on Foata normal form. 0/10837 useless extension candidates. Maximal degree in co-relation 58192. Up to 17293 conditions per place. [2023-08-30 12:00:02,673 INFO L137 encePairwiseOnDemand]: 443/447 looper letters, 70 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2023-08-30 12:00:02,673 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 74 transitions, 387 flow [2023-08-30 12:00:02,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:00:02,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:00:02,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 638 transitions. [2023-08-30 12:00:02,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47576435495898584 [2023-08-30 12:00:02,678 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 638 transitions. [2023-08-30 12:00:02,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 638 transitions. [2023-08-30 12:00:02,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:00:02,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 638 transitions. [2023-08-30 12:00:02,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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) [2023-08-30 12:00:02,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 447.0) internal successors, (1788), 4 states have internal predecessors, (1788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:00:02,685 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 447.0) internal successors, (1788), 4 states have internal predecessors, (1788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:00:02,685 INFO L175 Difference]: Start difference. First operand has 49 places, 49 transitions, 188 flow. Second operand 3 states and 638 transitions. [2023-08-30 12:00:02,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 74 transitions, 387 flow [2023-08-30 12:00:02,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 74 transitions, 375 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 12:00:02,689 INFO L231 Difference]: Finished difference. Result has 50 places, 50 transitions, 190 flow [2023-08-30 12:00:02,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=447, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=50, PETRI_TRANSITIONS=50} [2023-08-30 12:00:02,692 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 0 predicate places. [2023-08-30 12:00:02,692 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 50 transitions, 190 flow [2023-08-30 12:00:02,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 194.0) internal successors, (582), 3 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:00:02,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:00:02,693 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 12:00:02,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 12:00:02,693 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 12:00:02,693 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:00:02,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1173794818, now seen corresponding path program 1 times [2023-08-30 12:00:02,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:00:02,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353431818] [2023-08-30 12:00:02,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:00:02,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:00:02,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:00:02,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:00:02,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:00:02,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353431818] [2023-08-30 12:00:02,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353431818] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:00:02,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:00:02,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:00:02,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566618790] [2023-08-30 12:00:02,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:00:02,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 12:00:02,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:00:02,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 12:00:02,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 12:00:02,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 447 [2023-08-30 12:00:02,837 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 50 transitions, 190 flow. Second operand has 4 states, 4 states have (on average 185.25) internal successors, (741), 4 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:00:02,837 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:00:02,837 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 447 [2023-08-30 12:00:02,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:00:04,909 INFO L130 PetriNetUnfolder]: 19161/26063 cut-off events. [2023-08-30 12:00:04,909 INFO L131 PetriNetUnfolder]: For 1259/1874 co-relation queries the response was YES. [2023-08-30 12:00:04,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55610 conditions, 26063 events. 19161/26063 cut-off events. For 1259/1874 co-relation queries the response was YES. Maximal size of possible extension queue 2172. Compared 163863 event pairs, 12675 based on Foata normal form. 830/11663 useless extension candidates. Maximal degree in co-relation 44186. Up to 25716 conditions per place. [2023-08-30 12:00:05,109 INFO L137 encePairwiseOnDemand]: 437/447 looper letters, 71 selfloop transitions, 4 changer transitions 2/80 dead transitions. [2023-08-30 12:00:05,110 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 80 transitions, 440 flow [2023-08-30 12:00:05,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 12:00:05,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 12:00:05,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 995 transitions. [2023-08-30 12:00:05,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4451901565995526 [2023-08-30 12:00:05,120 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 995 transitions. [2023-08-30 12:00:05,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 995 transitions. [2023-08-30 12:00:05,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:00:05,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 995 transitions. [2023-08-30 12:00:05,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 199.0) internal successors, (995), 5 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:00:05,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 447.0) internal successors, (2682), 6 states have internal predecessors, (2682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:00:05,127 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 447.0) internal successors, (2682), 6 states have internal predecessors, (2682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:00:05,127 INFO L175 Difference]: Start difference. First operand has 50 places, 50 transitions, 190 flow. Second operand 5 states and 995 transitions. [2023-08-30 12:00:05,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 80 transitions, 440 flow [2023-08-30 12:00:05,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 80 transitions, 438 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:00:05,132 INFO L231 Difference]: Finished difference. Result has 55 places, 51 transitions, 232 flow [2023-08-30 12:00:05,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=447, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=232, PETRI_PLACES=55, PETRI_TRANSITIONS=51} [2023-08-30 12:00:05,133 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 5 predicate places. [2023-08-30 12:00:05,133 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 51 transitions, 232 flow [2023-08-30 12:00:05,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 185.25) internal successors, (741), 4 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:00:05,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:00:05,134 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-08-30 12:00:05,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 12:00:05,134 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 12:00:05,135 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:00:05,135 INFO L85 PathProgramCache]: Analyzing trace with hash 2037248566, now seen corresponding path program 1 times [2023-08-30 12:00:05,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:00:05,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034328283] [2023-08-30 12:00:05,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:00:05,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:00:05,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:00:05,228 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:00:05,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:00:05,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034328283] [2023-08-30 12:00:05,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034328283] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:00:05,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621388122] [2023-08-30 12:00:05,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:00:05,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:00:05,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:00:05,231 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:00:05,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 12:00:05,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:00:05,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 12:00:05,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:00:05,350 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:00:05,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:00:05,403 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:00:05,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621388122] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:00:05,404 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:00:05,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 12:00:05,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889317710] [2023-08-30 12:00:05,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:00:05,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 12:00:05,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:00:05,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 12:00:05,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 12:00:05,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 447 [2023-08-30 12:00:05,688 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 51 transitions, 232 flow. Second operand has 13 states, 13 states have (on average 189.15384615384616) internal successors, (2459), 13 states have internal predecessors, (2459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:00:05,688 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:00:05,688 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 447 [2023-08-30 12:00:05,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:00:11,658 INFO L130 PetriNetUnfolder]: 42219/57401 cut-off events. [2023-08-30 12:00:11,658 INFO L131 PetriNetUnfolder]: For 23892/25269 co-relation queries the response was YES. [2023-08-30 12:00:11,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151981 conditions, 57401 events. 42219/57401 cut-off events. For 23892/25269 co-relation queries the response was YES. Maximal size of possible extension queue 2544. Compared 375398 event pairs, 27918 based on Foata normal form. 1365/25224 useless extension candidates. Maximal degree in co-relation 151243. Up to 15359 conditions per place. [2023-08-30 12:00:11,981 INFO L137 encePairwiseOnDemand]: 442/447 looper letters, 334 selfloop transitions, 32 changer transitions 0/369 dead transitions. [2023-08-30 12:00:11,981 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 369 transitions, 2052 flow [2023-08-30 12:00:11,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 12:00:11,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 12:00:11,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2616 transitions. [2023-08-30 12:00:11,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48769574944071586 [2023-08-30 12:00:11,989 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2616 transitions. [2023-08-30 12:00:11,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2616 transitions. [2023-08-30 12:00:11,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:00:11,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2616 transitions. [2023-08-30 12:00:11,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 218.0) internal successors, (2616), 12 states have internal predecessors, (2616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:00:12,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 447.0) internal successors, (5811), 13 states have internal predecessors, (5811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:00:12,006 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 447.0) internal successors, (5811), 13 states have internal predecessors, (5811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:00:12,006 INFO L175 Difference]: Start difference. First operand has 55 places, 51 transitions, 232 flow. Second operand 12 states and 2616 transitions. [2023-08-30 12:00:12,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 369 transitions, 2052 flow [2023-08-30 12:00:12,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 369 transitions, 2046 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-30 12:00:12,016 INFO L231 Difference]: Finished difference. Result has 71 places, 69 transitions, 444 flow [2023-08-30 12:00:12,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=447, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=444, PETRI_PLACES=71, PETRI_TRANSITIONS=69} [2023-08-30 12:00:12,016 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 21 predicate places. [2023-08-30 12:00:12,017 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 69 transitions, 444 flow [2023-08-30 12:00:12,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 189.15384615384616) internal successors, (2459), 13 states have internal predecessors, (2459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:00:12,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:00:12,018 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:00:12,025 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 12:00:12,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:00:12,224 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 12:00:12,224 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:00:12,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1359082651, now seen corresponding path program 1 times [2023-08-30 12:00:12,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:00:12,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678236060] [2023-08-30 12:00:12,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:00:12,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:00:12,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:00:12,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:00:12,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:00:12,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678236060] [2023-08-30 12:00:12,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678236060] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:00:12,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679722717] [2023-08-30 12:00:12,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:00:12,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:00:12,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:00:12,332 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:00:12,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 12:00:12,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:00:12,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 12:00:12,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:00:12,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 12:00:12,431 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 12:00:12,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1679722717] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:00:12,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 12:00:12,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-08-30 12:00:12,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803185897] [2023-08-30 12:00:12,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:00:12,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:00:12,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:00:12,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:00:12,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 12:00:12,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 447 [2023-08-30 12:00:12,438 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 69 transitions, 444 flow. Second operand has 3 states, 3 states have (on average 194.0) internal successors, (582), 3 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:00:12,438 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:00:12,438 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 447 [2023-08-30 12:00:12,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:00:16,028 INFO L130 PetriNetUnfolder]: 23750/32728 cut-off events. [2023-08-30 12:00:16,029 INFO L131 PetriNetUnfolder]: For 19759/21013 co-relation queries the response was YES. [2023-08-30 12:00:16,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81730 conditions, 32728 events. 23750/32728 cut-off events. For 19759/21013 co-relation queries the response was YES. Maximal size of possible extension queue 1610. Compared 209085 event pairs, 15565 based on Foata normal form. 1210/17493 useless extension candidates. Maximal degree in co-relation 73508. Up to 32519 conditions per place. [2023-08-30 12:00:16,149 INFO L137 encePairwiseOnDemand]: 443/447 looper letters, 62 selfloop transitions, 1 changer transitions 0/66 dead transitions. [2023-08-30 12:00:16,149 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 66 transitions, 552 flow [2023-08-30 12:00:16,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:00:16,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:00:16,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 610 transitions. [2023-08-30 12:00:16,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45488441461595824 [2023-08-30 12:00:16,154 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 610 transitions. [2023-08-30 12:00:16,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 610 transitions. [2023-08-30 12:00:16,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:00:16,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 610 transitions. [2023-08-30 12:00:16,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 203.33333333333334) internal successors, (610), 3 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:00:16,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 447.0) internal successors, (1788), 4 states have internal predecessors, (1788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:00:16,159 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 447.0) internal successors, (1788), 4 states have internal predecessors, (1788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:00:16,159 INFO L175 Difference]: Start difference. First operand has 71 places, 69 transitions, 444 flow. Second operand 3 states and 610 transitions. [2023-08-30 12:00:16,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 66 transitions, 552 flow [2023-08-30 12:00:16,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 66 transitions, 460 flow, removed 26 selfloop flow, removed 5 redundant places. [2023-08-30 12:00:16,165 INFO L231 Difference]: Finished difference. Result has 65 places, 66 transitions, 336 flow [2023-08-30 12:00:16,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=447, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=336, PETRI_PLACES=65, PETRI_TRANSITIONS=66} [2023-08-30 12:00:16,167 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 15 predicate places. [2023-08-30 12:00:16,167 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 66 transitions, 336 flow [2023-08-30 12:00:16,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 194.0) internal successors, (582), 3 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:00:16,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:00:16,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:00:16,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 12:00:16,374 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 [2023-08-30 12:00:16,374 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 12:00:16,374 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:00:16,374 INFO L85 PathProgramCache]: Analyzing trace with hash -818108275, now seen corresponding path program 1 times [2023-08-30 12:00:16,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:00:16,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334885373] [2023-08-30 12:00:16,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:00:16,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:00:16,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:00:16,598 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:00:16,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:00:16,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334885373] [2023-08-30 12:00:16,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334885373] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:00:16,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294432592] [2023-08-30 12:00:16,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:00:16,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:00:16,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:00:16,600 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:00:16,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 12:00:16,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:00:16,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 12:00:16,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:00:16,748 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:00:16,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:00:16,812 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:00:16,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294432592] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:00:16,812 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:00:16,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-08-30 12:00:16,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026326087] [2023-08-30 12:00:16,813 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:00:16,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 12:00:16,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:00:16,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 12:00:16,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-08-30 12:00:16,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 447 [2023-08-30 12:00:16,942 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 66 transitions, 336 flow. Second operand has 12 states, 12 states have (on average 179.41666666666666) internal successors, (2153), 12 states have internal predecessors, (2153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:00:16,942 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:00:16,942 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 447 [2023-08-30 12:00:16,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:00:22,010 INFO L130 PetriNetUnfolder]: 33166/46545 cut-off events. [2023-08-30 12:00:22,010 INFO L131 PetriNetUnfolder]: For 34057/36345 co-relation queries the response was YES. [2023-08-30 12:00:22,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112967 conditions, 46545 events. 33166/46545 cut-off events. For 34057/36345 co-relation queries the response was YES. Maximal size of possible extension queue 2257. Compared 322918 event pairs, 16577 based on Foata normal form. 6336/29011 useless extension candidates. Maximal degree in co-relation 112945. Up to 32195 conditions per place. [2023-08-30 12:00:22,268 INFO L137 encePairwiseOnDemand]: 437/447 looper letters, 143 selfloop transitions, 11 changer transitions 3/160 dead transitions. [2023-08-30 12:00:22,268 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 160 transitions, 1002 flow [2023-08-30 12:00:22,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 12:00:22,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 12:00:22,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1896 transitions. [2023-08-30 12:00:22,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42416107382550333 [2023-08-30 12:00:22,272 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1896 transitions. [2023-08-30 12:00:22,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1896 transitions. [2023-08-30 12:00:22,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:00:22,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1896 transitions. [2023-08-30 12:00:22,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 189.6) internal successors, (1896), 10 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:00:22,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 447.0) internal successors, (4917), 11 states have internal predecessors, (4917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:00:22,282 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 447.0) internal successors, (4917), 11 states have internal predecessors, (4917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:00:22,282 INFO L175 Difference]: Start difference. First operand has 65 places, 66 transitions, 336 flow. Second operand 10 states and 1896 transitions. [2023-08-30 12:00:22,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 160 transitions, 1002 flow [2023-08-30 12:00:22,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 160 transitions, 1001 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:00:22,288 INFO L231 Difference]: Finished difference. Result has 77 places, 71 transitions, 437 flow [2023-08-30 12:00:22,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=447, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=437, PETRI_PLACES=77, PETRI_TRANSITIONS=71} [2023-08-30 12:00:22,289 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 27 predicate places. [2023-08-30 12:00:22,289 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 71 transitions, 437 flow [2023-08-30 12:00:22,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 179.41666666666666) internal successors, (2153), 12 states have internal predecessors, (2153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:00:22,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:00:22,290 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:00:22,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 12:00:22,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:00:22,495 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 12:00:22,496 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:00:22,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1149840102, now seen corresponding path program 2 times [2023-08-30 12:00:22,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:00:22,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206690748] [2023-08-30 12:00:22,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:00:22,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:00:22,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:00:22,559 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 12:00:22,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:00:22,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206690748] [2023-08-30 12:00:22,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206690748] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:00:22,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235368691] [2023-08-30 12:00:22,560 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 12:00:22,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:00:22,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:00:22,562 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) [2023-08-30 12:00:22,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 12:00:22,662 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 12:00:22,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 12:00:22,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 12:00:22,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:00:22,672 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 12:00:22,672 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 12:00:22,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235368691] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:00:22,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 12:00:22,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 12:00:22,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518977473] [2023-08-30 12:00:22,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:00:22,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 12:00:22,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:00:22,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 12:00:22,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 12:00:22,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 447 [2023-08-30 12:00:22,684 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 71 transitions, 437 flow. Second operand has 4 states, 4 states have (on average 194.0) internal successors, (776), 4 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:00:22,684 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:00:22,685 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 447 [2023-08-30 12:00:22,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:00:27,402 INFO L130 PetriNetUnfolder]: 37709/52331 cut-off events. [2023-08-30 12:00:27,403 INFO L131 PetriNetUnfolder]: For 46225/46225 co-relation queries the response was YES. [2023-08-30 12:00:27,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140914 conditions, 52331 events. 37709/52331 cut-off events. For 46225/46225 co-relation queries the response was YES. Maximal size of possible extension queue 2419. Compared 363689 event pairs, 9471 based on Foata normal form. 0/26899 useless extension candidates. Maximal degree in co-relation 140887. Up to 24420 conditions per place. [2023-08-30 12:00:27,692 INFO L137 encePairwiseOnDemand]: 444/447 looper letters, 103 selfloop transitions, 3 changer transitions 0/108 dead transitions. [2023-08-30 12:00:27,693 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 108 transitions, 755 flow [2023-08-30 12:00:27,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 12:00:27,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 12:00:27,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 838 transitions. [2023-08-30 12:00:27,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46868008948545864 [2023-08-30 12:00:27,696 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 838 transitions. [2023-08-30 12:00:27,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 838 transitions. [2023-08-30 12:00:27,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:00:27,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 838 transitions. [2023-08-30 12:00:27,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 209.5) internal successors, (838), 4 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:00:27,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 447.0) internal successors, (2235), 5 states have internal predecessors, (2235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:00:27,701 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 447.0) internal successors, (2235), 5 states have internal predecessors, (2235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:00:27,701 INFO L175 Difference]: Start difference. First operand has 77 places, 71 transitions, 437 flow. Second operand 4 states and 838 transitions. [2023-08-30 12:00:27,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 108 transitions, 755 flow [2023-08-30 12:00:27,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 108 transitions, 740 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-08-30 12:00:27,733 INFO L231 Difference]: Finished difference. Result has 77 places, 70 transitions, 424 flow [2023-08-30 12:00:27,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=447, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=424, PETRI_PLACES=77, PETRI_TRANSITIONS=70} [2023-08-30 12:00:27,733 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 27 predicate places. [2023-08-30 12:00:27,734 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 70 transitions, 424 flow [2023-08-30 12:00:27,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 194.0) internal successors, (776), 4 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:00:27,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:00:27,735 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:00:27,741 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 12:00:27,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:00:27,941 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 12:00:27,941 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:00:27,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1149840121, now seen corresponding path program 1 times [2023-08-30 12:00:27,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:00:27,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754232862] [2023-08-30 12:00:27,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:00:27,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:00:27,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:00:28,067 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 12:00:28,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:00:28,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754232862] [2023-08-30 12:00:28,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754232862] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:00:28,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480428698] [2023-08-30 12:00:28,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:00:28,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:00:28,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:00:28,073 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) [2023-08-30 12:00:28,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 12:00:28,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:00:28,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 12:00:28,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:00:28,253 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 12:00:28,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:00:28,267 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 12:00:28,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1480428698] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:00:28,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:00:28,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 12:00:28,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683032685] [2023-08-30 12:00:28,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:00:28,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 12:00:28,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:00:28,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 12:00:28,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 12:00:28,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 447 [2023-08-30 12:00:28,285 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 70 transitions, 424 flow. Second operand has 7 states, 7 states have (on average 193.85714285714286) internal successors, (1357), 7 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:00:28,285 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:00:28,285 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 447 [2023-08-30 12:00:28,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:00:39,159 INFO L130 PetriNetUnfolder]: 65011/89401 cut-off events. [2023-08-30 12:00:39,160 INFO L131 PetriNetUnfolder]: For 86420/86420 co-relation queries the response was YES. [2023-08-30 12:00:39,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246336 conditions, 89401 events. 65011/89401 cut-off events. For 86420/86420 co-relation queries the response was YES. Maximal size of possible extension queue 3925. Compared 642077 event pairs, 13431 based on Foata normal form. 0/47238 useless extension candidates. Maximal degree in co-relation 246309. Up to 24420 conditions per place. [2023-08-30 12:00:39,902 INFO L137 encePairwiseOnDemand]: 444/447 looper letters, 150 selfloop transitions, 6 changer transitions 0/158 dead transitions. [2023-08-30 12:00:39,903 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 158 transitions, 1006 flow [2023-08-30 12:00:39,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 12:00:39,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 12:00:39,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1274 transitions. [2023-08-30 12:00:39,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4750186428038777 [2023-08-30 12:00:39,906 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1274 transitions. [2023-08-30 12:00:39,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1274 transitions. [2023-08-30 12:00:39,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:00:39,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1274 transitions. [2023-08-30 12:00:39,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 212.33333333333334) internal successors, (1274), 6 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:00:39,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 447.0) internal successors, (3129), 7 states have internal predecessors, (3129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:00:39,913 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 447.0) internal successors, (3129), 7 states have internal predecessors, (3129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:00:39,913 INFO L175 Difference]: Start difference. First operand has 77 places, 70 transitions, 424 flow. Second operand 6 states and 1274 transitions. [2023-08-30 12:00:39,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 158 transitions, 1006 flow [2023-08-30 12:00:39,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 158 transitions, 1002 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 12:00:39,968 INFO L231 Difference]: Finished difference. Result has 83 places, 73 transitions, 465 flow [2023-08-30 12:00:39,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=447, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=465, PETRI_PLACES=83, PETRI_TRANSITIONS=73} [2023-08-30 12:00:39,969 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 33 predicate places. [2023-08-30 12:00:39,969 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 73 transitions, 465 flow [2023-08-30 12:00:39,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 193.85714285714286) internal successors, (1357), 7 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:00:39,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:00:39,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:00:39,981 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-30 12:00:40,175 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,SelfDestructingSolverStorable10 [2023-08-30 12:00:40,175 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 12:00:40,176 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:00:40,176 INFO L85 PathProgramCache]: Analyzing trace with hash -26959065, now seen corresponding path program 1 times [2023-08-30 12:00:40,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:00:40,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173639400] [2023-08-30 12:00:40,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:00:40,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:00:40,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:00:40,282 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 12:00:40,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:00:40,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173639400] [2023-08-30 12:00:40,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173639400] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:00:40,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:00:40,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 12:00:40,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241634784] [2023-08-30 12:00:40,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:00:40,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 12:00:40,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:00:40,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 12:00:40,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 12:00:40,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 447 [2023-08-30 12:00:40,327 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 73 transitions, 465 flow. Second operand has 4 states, 4 states have (on average 186.25) internal successors, (745), 4 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:00:40,327 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:00:40,327 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 447 [2023-08-30 12:00:40,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:00:49,570 INFO L130 PetriNetUnfolder]: 52386/72631 cut-off events. [2023-08-30 12:00:49,570 INFO L131 PetriNetUnfolder]: For 133111/135629 co-relation queries the response was YES. [2023-08-30 12:00:49,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211701 conditions, 72631 events. 52386/72631 cut-off events. For 133111/135629 co-relation queries the response was YES. Maximal size of possible extension queue 3484. Compared 519195 event pairs, 34584 based on Foata normal form. 2666/41937 useless extension candidates. Maximal degree in co-relation 211671. Up to 72009 conditions per place. [2023-08-30 12:00:50,242 INFO L137 encePairwiseOnDemand]: 434/447 looper letters, 70 selfloop transitions, 14 changer transitions 6/93 dead transitions. [2023-08-30 12:00:50,242 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 93 transitions, 781 flow [2023-08-30 12:00:50,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 12:00:50,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 12:00:50,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 790 transitions. [2023-08-30 12:00:50,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.441834451901566 [2023-08-30 12:00:50,245 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 790 transitions. [2023-08-30 12:00:50,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 790 transitions. [2023-08-30 12:00:50,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:00:50,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 790 transitions. [2023-08-30 12:00:50,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 197.5) internal successors, (790), 4 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:00:50,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 447.0) internal successors, (2235), 5 states have internal predecessors, (2235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:00:50,250 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 447.0) internal successors, (2235), 5 states have internal predecessors, (2235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:00:50,250 INFO L175 Difference]: Start difference. First operand has 83 places, 73 transitions, 465 flow. Second operand 4 states and 790 transitions. [2023-08-30 12:00:50,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 93 transitions, 781 flow [2023-08-30 12:00:50,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 93 transitions, 764 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 12:00:50,332 INFO L231 Difference]: Finished difference. Result has 87 places, 74 transitions, 523 flow [2023-08-30 12:00:50,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=447, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=523, PETRI_PLACES=87, PETRI_TRANSITIONS=74} [2023-08-30 12:00:50,333 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 37 predicate places. [2023-08-30 12:00:50,333 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 74 transitions, 523 flow [2023-08-30 12:00:50,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 186.25) internal successors, (745), 4 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:00:50,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:00:50,334 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:00:50,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 12:00:50,334 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 12:00:50,335 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:00:50,335 INFO L85 PathProgramCache]: Analyzing trace with hash 708352741, now seen corresponding path program 1 times [2023-08-30 12:00:50,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:00:50,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535144845] [2023-08-30 12:00:50,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:00:50,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:00:50,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:00:50,415 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 12:00:50,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:00:50,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535144845] [2023-08-30 12:00:50,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535144845] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:00:50,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:00:50,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:00:50,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69720232] [2023-08-30 12:00:50,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:00:50,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:00:50,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:00:50,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:00:50,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:00:50,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 447 [2023-08-30 12:00:50,424 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 74 transitions, 523 flow. Second operand has 3 states, 3 states have (on average 193.33333333333334) internal successors, (580), 3 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:00:50,424 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:00:50,424 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 447 [2023-08-30 12:00:50,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:00:57,060 INFO L130 PetriNetUnfolder]: 48222/66773 cut-off events. [2023-08-30 12:00:57,060 INFO L131 PetriNetUnfolder]: For 99164/100034 co-relation queries the response was YES. [2023-08-30 12:00:57,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225592 conditions, 66773 events. 48222/66773 cut-off events. For 99164/100034 co-relation queries the response was YES. Maximal size of possible extension queue 3303. Compared 469364 event pairs, 12004 based on Foata normal form. 1138/36831 useless extension candidates. Maximal degree in co-relation 225559. Up to 65815 conditions per place. [2023-08-30 12:00:57,698 INFO L137 encePairwiseOnDemand]: 443/447 looper letters, 76 selfloop transitions, 5 changer transitions 0/84 dead transitions. [2023-08-30 12:00:57,699 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 84 transitions, 720 flow [2023-08-30 12:00:57,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:00:57,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:00:57,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 613 transitions. [2023-08-30 12:00:57,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4571215510812826 [2023-08-30 12:00:57,702 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 613 transitions. [2023-08-30 12:00:57,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 613 transitions. [2023-08-30 12:00:57,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:00:57,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 613 transitions. [2023-08-30 12:00:57,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 204.33333333333334) internal successors, (613), 3 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:00:57,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 447.0) internal successors, (1788), 4 states have internal predecessors, (1788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:00:57,706 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 447.0) internal successors, (1788), 4 states have internal predecessors, (1788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:00:57,706 INFO L175 Difference]: Start difference. First operand has 87 places, 74 transitions, 523 flow. Second operand 3 states and 613 transitions. [2023-08-30 12:00:57,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 84 transitions, 720 flow [2023-08-30 12:00:57,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 84 transitions, 689 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-30 12:00:57,812 INFO L231 Difference]: Finished difference. Result has 88 places, 74 transitions, 513 flow [2023-08-30 12:00:57,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=447, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=513, PETRI_PLACES=88, PETRI_TRANSITIONS=74} [2023-08-30 12:00:57,813 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 38 predicate places. [2023-08-30 12:00:57,813 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 74 transitions, 513 flow [2023-08-30 12:00:57,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 193.33333333333334) internal successors, (580), 3 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:00:57,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:00:57,814 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:00:57,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 12:00:57,814 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 12:00:57,815 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:00:57,815 INFO L85 PathProgramCache]: Analyzing trace with hash -356178230, now seen corresponding path program 1 times [2023-08-30 12:00:57,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:00:57,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891564024] [2023-08-30 12:00:57,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:00:57,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:00:57,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:00:57,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 12:00:57,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:00:57,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891564024] [2023-08-30 12:00:57,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891564024] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:00:57,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:00:57,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 12:00:57,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688554396] [2023-08-30 12:00:57,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:00:57,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:00:57,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:00:57,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:00:57,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:00:57,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 447 [2023-08-30 12:00:57,905 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 74 transitions, 513 flow. Second operand has 3 states, 3 states have (on average 191.33333333333334) internal successors, (574), 3 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:00:57,905 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:00:57,905 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 447 [2023-08-30 12:00:57,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:01:05,065 INFO L130 PetriNetUnfolder]: 45342/63155 cut-off events. [2023-08-30 12:01:05,066 INFO L131 PetriNetUnfolder]: For 125581/125911 co-relation queries the response was YES. [2023-08-30 12:01:05,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217327 conditions, 63155 events. 45342/63155 cut-off events. For 125581/125911 co-relation queries the response was YES. Maximal size of possible extension queue 3025. Compared 412836 event pairs, 6540 based on Foata normal form. 1430/34345 useless extension candidates. Maximal degree in co-relation 217293. Up to 57961 conditions per place. [2023-08-30 12:01:05,659 INFO L137 encePairwiseOnDemand]: 437/447 looper letters, 83 selfloop transitions, 5 changer transitions 0/91 dead transitions. [2023-08-30 12:01:05,659 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 91 transitions, 787 flow [2023-08-30 12:01:05,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:01:05,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:01:05,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 613 transitions. [2023-08-30 12:01:05,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4571215510812826 [2023-08-30 12:01:05,662 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 613 transitions. [2023-08-30 12:01:05,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 613 transitions. [2023-08-30 12:01:05,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:01:05,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 613 transitions. [2023-08-30 12:01:05,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 204.33333333333334) internal successors, (613), 3 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:01:05,665 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 447.0) internal successors, (1788), 4 states have internal predecessors, (1788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:01:05,666 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 447.0) internal successors, (1788), 4 states have internal predecessors, (1788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:01:05,666 INFO L175 Difference]: Start difference. First operand has 88 places, 74 transitions, 513 flow. Second operand 3 states and 613 transitions. [2023-08-30 12:01:05,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 91 transitions, 787 flow [2023-08-30 12:01:05,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 91 transitions, 754 flow, removed 14 selfloop flow, removed 1 redundant places. [2023-08-30 12:01:05,737 INFO L231 Difference]: Finished difference. Result has 90 places, 78 transitions, 541 flow [2023-08-30 12:01:05,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=447, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=541, PETRI_PLACES=90, PETRI_TRANSITIONS=78} [2023-08-30 12:01:05,739 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 40 predicate places. [2023-08-30 12:01:05,739 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 78 transitions, 541 flow [2023-08-30 12:01:05,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 191.33333333333334) internal successors, (574), 3 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:01:05,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:01:05,739 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 12:01:05,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 12:01:05,740 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 12:01:05,740 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:01:05,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1770095374, now seen corresponding path program 2 times [2023-08-30 12:01:05,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:01:05,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566315615] [2023-08-30 12:01:05,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:01:05,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:01:05,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:01:05,849 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 12:01:05,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:01:05,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566315615] [2023-08-30 12:01:05,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566315615] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:01:05,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897904753] [2023-08-30 12:01:05,850 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 12:01:05,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:01:05,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:01:05,851 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) [2023-08-30 12:01:05,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 12:01:06,037 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 12:01:06,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 12:01:06,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 12:01:06,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:01:06,054 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-30 12:01:06,054 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 12:01:06,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897904753] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:01:06,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 12:01:06,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2023-08-30 12:01:06,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088164506] [2023-08-30 12:01:06,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:01:06,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:01:06,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:01:06,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:01:06,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 12:01:06,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 447 [2023-08-30 12:01:06,064 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 78 transitions, 541 flow. Second operand has 3 states, 3 states have (on average 194.33333333333334) internal successors, (583), 3 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:01:06,064 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:01:06,064 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 447 [2023-08-30 12:01:06,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:01:13,335 INFO L130 PetriNetUnfolder]: 42460/59283 cut-off events. [2023-08-30 12:01:13,335 INFO L131 PetriNetUnfolder]: For 60665/60995 co-relation queries the response was YES. [2023-08-30 12:01:13,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215820 conditions, 59283 events. 42460/59283 cut-off events. For 60665/60995 co-relation queries the response was YES. Maximal size of possible extension queue 2844. Compared 386053 event pairs, 21618 based on Foata normal form. 1320/34863 useless extension candidates. Maximal degree in co-relation 215784. Up to 59052 conditions per place. [2023-08-30 12:01:13,909 INFO L137 encePairwiseOnDemand]: 445/447 looper letters, 72 selfloop transitions, 1 changer transitions 1/77 dead transitions. [2023-08-30 12:01:13,909 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 77 transitions, 677 flow [2023-08-30 12:01:13,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:01:13,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:01:13,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 606 transitions. [2023-08-30 12:01:13,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4519015659955257 [2023-08-30 12:01:13,911 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 606 transitions. [2023-08-30 12:01:13,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 606 transitions. [2023-08-30 12:01:13,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:01:13,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 606 transitions. [2023-08-30 12:01:13,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 202.0) internal successors, (606), 3 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:01:13,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 447.0) internal successors, (1788), 4 states have internal predecessors, (1788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:01:13,915 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 447.0) internal successors, (1788), 4 states have internal predecessors, (1788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:01:13,915 INFO L175 Difference]: Start difference. First operand has 90 places, 78 transitions, 541 flow. Second operand 3 states and 606 transitions. [2023-08-30 12:01:13,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 77 transitions, 677 flow [2023-08-30 12:01:13,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 77 transitions, 660 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-08-30 12:01:13,960 INFO L231 Difference]: Finished difference. Result has 86 places, 76 transitions, 508 flow [2023-08-30 12:01:13,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=447, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=84, 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=508, PETRI_PLACES=86, PETRI_TRANSITIONS=76} [2023-08-30 12:01:13,961 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 36 predicate places. [2023-08-30 12:01:13,961 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 76 transitions, 508 flow [2023-08-30 12:01:13,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 194.33333333333334) internal successors, (583), 3 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:01:13,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:01:13,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:01:13,972 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-08-30 12:01:14,168 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,SelfDestructingSolverStorable14 [2023-08-30 12:01:14,168 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 12:01:14,168 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:01:14,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1590415616, now seen corresponding path program 1 times [2023-08-30 12:01:14,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:01:14,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102584949] [2023-08-30 12:01:14,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:01:14,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:01:14,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:01:14,744 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 12:01:14,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:01:14,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102584949] [2023-08-30 12:01:14,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102584949] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:01:14,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27618649] [2023-08-30 12:01:14,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:01:14,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:01:14,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:01:14,746 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:01:14,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-30 12:01:14,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:01:14,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 33 conjunts are in the unsatisfiable core [2023-08-30 12:01:14,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:01:14,972 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 11 treesize of output 7 [2023-08-30 12:01:15,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 12:01:15,038 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 14 treesize of output 16 [2023-08-30 12:01:15,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 12:01:15,114 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 14 treesize of output 16 [2023-08-30 12:01:15,154 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 12:01:15,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:01:15,415 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 12:01:15,415 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 31 treesize of output 32 [2023-08-30 12:01:15,426 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 12:01:15,427 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 87 treesize of output 79 [2023-08-30 12:01:15,559 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 68 treesize of output 56 [2023-08-30 12:01:15,568 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 30 treesize of output 24 [2023-08-30 12:01:15,791 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 12:01:15,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27618649] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:01:15,791 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:01:15,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 16 [2023-08-30 12:01:15,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369914673] [2023-08-30 12:01:15,792 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:01:15,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 12:01:15,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:01:15,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 12:01:15,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=261, Unknown=2, NotChecked=0, Total=306 [2023-08-30 12:01:19,494 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 12:01:19,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 447 [2023-08-30 12:01:19,540 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 76 transitions, 508 flow. Second operand has 18 states, 18 states have (on average 130.0) internal successors, (2340), 18 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:01:19,540 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:01:19,540 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 447 [2023-08-30 12:01:19,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:01:32,925 INFO L130 PetriNetUnfolder]: 56006/80919 cut-off events. [2023-08-30 12:01:32,925 INFO L131 PetriNetUnfolder]: For 49057/49327 co-relation queries the response was YES. [2023-08-30 12:01:33,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 284041 conditions, 80919 events. 56006/80919 cut-off events. For 49057/49327 co-relation queries the response was YES. Maximal size of possible extension queue 3968. Compared 587281 event pairs, 18792 based on Foata normal form. 281/46468 useless extension candidates. Maximal degree in co-relation 284008. Up to 52796 conditions per place. [2023-08-30 12:01:33,728 INFO L137 encePairwiseOnDemand]: 431/447 looper letters, 146 selfloop transitions, 59 changer transitions 9/216 dead transitions. [2023-08-30 12:01:33,728 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 216 transitions, 1588 flow [2023-08-30 12:01:33,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-08-30 12:01:33,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-08-30 12:01:33,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4015 transitions. [2023-08-30 12:01:33,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2994034302759135 [2023-08-30 12:01:33,743 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4015 transitions. [2023-08-30 12:01:33,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4015 transitions. [2023-08-30 12:01:33,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:01:33,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4015 transitions. [2023-08-30 12:01:33,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 133.83333333333334) internal successors, (4015), 30 states have internal predecessors, (4015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:01:33,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 447.0) internal successors, (13857), 31 states have internal predecessors, (13857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:01:33,767 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 447.0) internal successors, (13857), 31 states have internal predecessors, (13857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:01:33,767 INFO L175 Difference]: Start difference. First operand has 86 places, 76 transitions, 508 flow. Second operand 30 states and 4015 transitions. [2023-08-30 12:01:33,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 216 transitions, 1588 flow [2023-08-30 12:01:33,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 216 transitions, 1555 flow, removed 16 selfloop flow, removed 1 redundant places. [2023-08-30 12:01:33,808 INFO L231 Difference]: Finished difference. Result has 125 places, 115 transitions, 890 flow [2023-08-30 12:01:33,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=447, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=890, PETRI_PLACES=125, PETRI_TRANSITIONS=115} [2023-08-30 12:01:33,809 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 75 predicate places. [2023-08-30 12:01:33,809 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 115 transitions, 890 flow [2023-08-30 12:01:33,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 130.0) internal successors, (2340), 18 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:01:33,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:01:33,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:01:33,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-30 12:01:34,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-30 12:01:34,011 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 12:01:34,011 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:01:34,011 INFO L85 PathProgramCache]: Analyzing trace with hash 2119953933, now seen corresponding path program 1 times [2023-08-30 12:01:34,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:01:34,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897283955] [2023-08-30 12:01:34,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:01:34,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:01:34,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:01:34,939 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:01:34,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:01:34,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897283955] [2023-08-30 12:01:34,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897283955] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:01:34,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487149579] [2023-08-30 12:01:34,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:01:34,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:01:34,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:01:34,941 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:01:34,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-30 12:01:35,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:01:35,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-30 12:01:35,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:01:35,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 12:01:35,170 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 12:01:35,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487149579] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:01:35,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 12:01:35,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 11 [2023-08-30 12:01:35,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326093507] [2023-08-30 12:01:35,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:01:35,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 12:01:35,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:01:35,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 12:01:35,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-08-30 12:01:35,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 447 [2023-08-30 12:01:35,237 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 115 transitions, 890 flow. Second operand has 5 states, 5 states have (on average 181.4) internal successors, (907), 5 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:01:35,237 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:01:35,237 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 447 [2023-08-30 12:01:35,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:01:44,458 INFO L130 PetriNetUnfolder]: 59681/86799 cut-off events. [2023-08-30 12:01:44,458 INFO L131 PetriNetUnfolder]: For 118304/118539 co-relation queries the response was YES. [2023-08-30 12:01:44,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 333950 conditions, 86799 events. 59681/86799 cut-off events. For 118304/118539 co-relation queries the response was YES. Maximal size of possible extension queue 4540. Compared 650583 event pairs, 26803 based on Foata normal form. 235/53309 useless extension candidates. Maximal degree in co-relation 333904. Up to 80672 conditions per place. [2023-08-30 12:01:45,149 INFO L137 encePairwiseOnDemand]: 440/447 looper letters, 138 selfloop transitions, 18 changer transitions 0/158 dead transitions. [2023-08-30 12:01:45,149 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 158 transitions, 1431 flow [2023-08-30 12:01:45,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 12:01:45,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 12:01:45,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 960 transitions. [2023-08-30 12:01:45,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42953020134228187 [2023-08-30 12:01:45,151 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 960 transitions. [2023-08-30 12:01:45,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 960 transitions. [2023-08-30 12:01:45,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:01:45,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 960 transitions. [2023-08-30 12:01:45,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 192.0) internal successors, (960), 5 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:01:45,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 447.0) internal successors, (2682), 6 states have internal predecessors, (2682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:01:45,156 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 447.0) internal successors, (2682), 6 states have internal predecessors, (2682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:01:45,156 INFO L175 Difference]: Start difference. First operand has 125 places, 115 transitions, 890 flow. Second operand 5 states and 960 transitions. [2023-08-30 12:01:45,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 158 transitions, 1431 flow [2023-08-30 12:01:46,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 158 transitions, 1327 flow, removed 18 selfloop flow, removed 11 redundant places. [2023-08-30 12:01:46,970 INFO L231 Difference]: Finished difference. Result has 118 places, 122 transitions, 897 flow [2023-08-30 12:01:46,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=447, PETRI_DIFFERENCE_MINUEND_FLOW=786, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=897, PETRI_PLACES=118, PETRI_TRANSITIONS=122} [2023-08-30 12:01:46,977 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 68 predicate places. [2023-08-30 12:01:46,977 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 122 transitions, 897 flow [2023-08-30 12:01:46,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 181.4) internal successors, (907), 5 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:01:46,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:01:46,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:01:46,985 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-08-30 12:01:47,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-30 12:01:47,185 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 12:01:47,186 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:01:47,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1960193687, now seen corresponding path program 2 times [2023-08-30 12:01:47,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:01:47,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127676226] [2023-08-30 12:01:47,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:01:47,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:01:47,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:01:47,866 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 12:01:47,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:01:47,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127676226] [2023-08-30 12:01:47,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127676226] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:01:47,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511239908] [2023-08-30 12:01:47,866 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 12:01:47,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:01:47,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:01:47,869 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:01:47,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-30 12:01:48,005 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 12:01:48,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 12:01:48,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-30 12:01:48,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:01:48,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 12:01:48,110 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 [2023-08-30 12:01:48,159 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 12:01:48,159 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 12:01:48,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511239908] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:01:48,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 12:01:48,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2023-08-30 12:01:48,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420608060] [2023-08-30 12:01:48,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:01:48,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 12:01:48,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:01:48,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 12:01:48,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-08-30 12:01:48,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 447 [2023-08-30 12:01:48,303 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 122 transitions, 897 flow. Second operand has 7 states, 7 states have (on average 173.71428571428572) internal successors, (1216), 7 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:01:48,303 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:01:48,303 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 447 [2023-08-30 12:01:48,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:01:58,246 INFO L130 PetriNetUnfolder]: 62681/91779 cut-off events. [2023-08-30 12:01:58,246 INFO L131 PetriNetUnfolder]: For 164865/165136 co-relation queries the response was YES. [2023-08-30 12:01:58,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 359139 conditions, 91779 events. 62681/91779 cut-off events. For 164865/165136 co-relation queries the response was YES. Maximal size of possible extension queue 4746. Compared 703002 event pairs, 28141 based on Foata normal form. 355/56943 useless extension candidates. Maximal degree in co-relation 359094. Up to 80904 conditions per place. [2023-08-30 12:01:59,267 INFO L137 encePairwiseOnDemand]: 440/447 looper letters, 129 selfloop transitions, 32 changer transitions 0/163 dead transitions. [2023-08-30 12:01:59,267 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 163 transitions, 1460 flow [2023-08-30 12:01:59,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 12:01:59,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 12:01:59,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1097 transitions. [2023-08-30 12:01:59,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40902311707680833 [2023-08-30 12:01:59,269 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1097 transitions. [2023-08-30 12:01:59,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1097 transitions. [2023-08-30 12:01:59,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:01:59,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1097 transitions. [2023-08-30 12:01:59,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 182.83333333333334) internal successors, (1097), 6 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:01:59,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 447.0) internal successors, (3129), 7 states have internal predecessors, (3129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:01:59,275 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 447.0) internal successors, (3129), 7 states have internal predecessors, (3129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:01:59,276 INFO L175 Difference]: Start difference. First operand has 118 places, 122 transitions, 897 flow. Second operand 6 states and 1097 transitions. [2023-08-30 12:01:59,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 163 transitions, 1460 flow [2023-08-30 12:02:01,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 163 transitions, 1429 flow, removed 10 selfloop flow, removed 1 redundant places. [2023-08-30 12:02:01,053 INFO L231 Difference]: Finished difference. Result has 124 places, 127 transitions, 1001 flow [2023-08-30 12:02:01,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=447, PETRI_DIFFERENCE_MINUEND_FLOW=866, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1001, PETRI_PLACES=124, PETRI_TRANSITIONS=127} [2023-08-30 12:02:01,053 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 74 predicate places. [2023-08-30 12:02:01,053 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 127 transitions, 1001 flow [2023-08-30 12:02:01,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 173.71428571428572) internal successors, (1216), 7 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:02:01,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:02:01,054 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1] [2023-08-30 12:02:01,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-30 12:02:01,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-30 12:02:01,254 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 12:02:01,255 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:02:01,255 INFO L85 PathProgramCache]: Analyzing trace with hash -219545194, now seen corresponding path program 2 times [2023-08-30 12:02:01,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:02:01,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405742068] [2023-08-30 12:02:01,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:02:01,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:02:01,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:02:01,414 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:02:01,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:02:01,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405742068] [2023-08-30 12:02:01,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405742068] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:02:01,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417862061] [2023-08-30 12:02:01,415 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 12:02:01,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:02:01,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:02:01,416 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:02:01,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-30 12:02:01,527 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 12:02:01,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 12:02:01,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 12:02:01,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:02:01,563 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 12:02:01,564 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 12:02:01,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1417862061] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:02:01,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 12:02:01,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [12] total 14 [2023-08-30 12:02:01,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534754716] [2023-08-30 12:02:01,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:02:01,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 12:02:01,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:02:01,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 12:02:01,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2023-08-30 12:02:01,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 447 [2023-08-30 12:02:01,604 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 127 transitions, 1001 flow. Second operand has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:02:01,604 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:02:01,604 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 447 [2023-08-30 12:02:01,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:02:09,019 INFO L130 PetriNetUnfolder]: 45626/67439 cut-off events. [2023-08-30 12:02:09,019 INFO L131 PetriNetUnfolder]: For 165557/165712 co-relation queries the response was YES. [2023-08-30 12:02:09,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 270133 conditions, 67439 events. 45626/67439 cut-off events. For 165557/165712 co-relation queries the response was YES. Maximal size of possible extension queue 3582. Compared 508965 event pairs, 27003 based on Foata normal form. 2840/45282 useless extension candidates. Maximal degree in co-relation 270085. Up to 67123 conditions per place. [2023-08-30 12:02:09,555 INFO L137 encePairwiseOnDemand]: 443/447 looper letters, 116 selfloop transitions, 1 changer transitions 3/123 dead transitions. [2023-08-30 12:02:09,555 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 123 transitions, 1177 flow [2023-08-30 12:02:09,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:02:09,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:02:09,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 593 transitions. [2023-08-30 12:02:09,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44220730797912006 [2023-08-30 12:02:09,556 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 593 transitions. [2023-08-30 12:02:09,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 593 transitions. [2023-08-30 12:02:09,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:02:09,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 593 transitions. [2023-08-30 12:02:09,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.66666666666666) internal successors, (593), 3 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:02:09,561 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 447.0) internal successors, (1788), 4 states have internal predecessors, (1788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:02:09,561 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 447.0) internal successors, (1788), 4 states have internal predecessors, (1788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:02:09,561 INFO L175 Difference]: Start difference. First operand has 124 places, 127 transitions, 1001 flow. Second operand 3 states and 593 transitions. [2023-08-30 12:02:09,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 123 transitions, 1177 flow [2023-08-30 12:02:10,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 123 transitions, 1020 flow, removed 31 selfloop flow, removed 15 redundant places. [2023-08-30 12:02:10,380 INFO L231 Difference]: Finished difference. Result has 107 places, 120 transitions, 769 flow [2023-08-30 12:02:10,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=447, PETRI_DIFFERENCE_MINUEND_FLOW=780, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=769, PETRI_PLACES=107, PETRI_TRANSITIONS=120} [2023-08-30 12:02:10,381 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 57 predicate places. [2023-08-30 12:02:10,381 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 120 transitions, 769 flow [2023-08-30 12:02:10,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:02:10,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:02:10,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:02:10,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-30 12:02:10,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:02:10,582 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 12:02:10,582 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:02:10,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1826716537, now seen corresponding path program 1 times [2023-08-30 12:02:10,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:02:10,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233032450] [2023-08-30 12:02:10,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:02:10,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:02:10,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:02:11,196 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:02:11,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:02:11,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233032450] [2023-08-30 12:02:11,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233032450] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:02:11,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611982158] [2023-08-30 12:02:11,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:02:11,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:02:11,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:02:11,198 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:02:11,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-30 12:02:11,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:02:11,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-30 12:02:11,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:02:11,421 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 12:02:11,421 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 12:02:11,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611982158] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:02:11,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 12:02:11,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 11 [2023-08-30 12:02:11,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528031838] [2023-08-30 12:02:11,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:02:11,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 12:02:11,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:02:11,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 12:02:11,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-08-30 12:02:11,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 447 [2023-08-30 12:02:11,606 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 120 transitions, 769 flow. Second operand has 5 states, 5 states have (on average 181.6) internal successors, (908), 5 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:02:11,606 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:02:11,606 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 447 [2023-08-30 12:02:11,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:02:18,247 INFO L130 PetriNetUnfolder]: 45847/67768 cut-off events. [2023-08-30 12:02:18,248 INFO L131 PetriNetUnfolder]: For 103732/103930 co-relation queries the response was YES. [2023-08-30 12:02:18,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227586 conditions, 67768 events. 45847/67768 cut-off events. For 103732/103930 co-relation queries the response was YES. Maximal size of possible extension queue 3476. Compared 509607 event pairs, 20112 based on Foata normal form. 278/43690 useless extension candidates. Maximal degree in co-relation 227551. Up to 63818 conditions per place. [2023-08-30 12:02:18,920 INFO L137 encePairwiseOnDemand]: 440/447 looper letters, 133 selfloop transitions, 18 changer transitions 0/153 dead transitions. [2023-08-30 12:02:18,920 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 153 transitions, 1234 flow [2023-08-30 12:02:18,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 12:02:18,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 12:02:18,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 954 transitions. [2023-08-30 12:02:18,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4268456375838926 [2023-08-30 12:02:18,922 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 954 transitions. [2023-08-30 12:02:18,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 954 transitions. [2023-08-30 12:02:18,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:02:18,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 954 transitions. [2023-08-30 12:02:18,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 190.8) internal successors, (954), 5 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:02:18,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 447.0) internal successors, (2682), 6 states have internal predecessors, (2682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:02:18,926 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 447.0) internal successors, (2682), 6 states have internal predecessors, (2682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:02:18,926 INFO L175 Difference]: Start difference. First operand has 107 places, 120 transitions, 769 flow. Second operand 5 states and 954 transitions. [2023-08-30 12:02:18,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 153 transitions, 1234 flow [2023-08-30 12:02:20,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 153 transitions, 1220 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-30 12:02:20,398 INFO L231 Difference]: Finished difference. Result has 105 places, 120 transitions, 795 flow [2023-08-30 12:02:20,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=447, PETRI_DIFFERENCE_MINUEND_FLOW=755, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=795, PETRI_PLACES=105, PETRI_TRANSITIONS=120} [2023-08-30 12:02:20,398 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 55 predicate places. [2023-08-30 12:02:20,398 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 120 transitions, 795 flow [2023-08-30 12:02:20,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 181.6) internal successors, (908), 5 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:02:20,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:02:20,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:02:20,414 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-30 12:02:20,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:02:20,606 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 12:02:20,606 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:02:20,606 INFO L85 PathProgramCache]: Analyzing trace with hash 768576501, now seen corresponding path program 1 times [2023-08-30 12:02:20,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:02:20,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086926972] [2023-08-30 12:02:20,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:02:20,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:02:20,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:02:21,249 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 12:02:21,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:02:21,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086926972] [2023-08-30 12:02:21,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086926972] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:02:21,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537576633] [2023-08-30 12:02:21,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:02:21,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:02:21,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:02:21,251 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:02:21,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-30 12:02:21,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:02:21,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-30 12:02:21,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:02:21,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 12:02:21,623 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 16 treesize of output 18 [2023-08-30 12:02:21,682 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 12:02:21,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:02:21,724 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_836 (Array Int Int))) (< (+ c_~s~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_836) c_~q1~0.base) (+ (* c_~q1_front~0 4) c_~q1~0.offset))) 2147483648)) is different from false [2023-08-30 12:02:21,750 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 12:02:21,750 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 46 treesize of output 38 [2023-08-30 12:02:21,773 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 11 treesize of output 5 [2023-08-30 12:02:21,986 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 12:02:21,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [537576633] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:02:21,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:02:21,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 19 [2023-08-30 12:02:21,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338242318] [2023-08-30 12:02:21,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:02:21,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-30 12:02:21,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:02:21,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-30 12:02:21,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=325, Unknown=1, NotChecked=36, Total=420 [2023-08-30 12:02:22,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 447 [2023-08-30 12:02:22,130 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 120 transitions, 795 flow. Second operand has 21 states, 21 states have (on average 125.85714285714286) internal successors, (2643), 21 states have internal predecessors, (2643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:02:22,130 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:02:22,131 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 447 [2023-08-30 12:02:22,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:02:35,414 INFO L130 PetriNetUnfolder]: 50553/75148 cut-off events. [2023-08-30 12:02:35,414 INFO L131 PetriNetUnfolder]: For 140877/141148 co-relation queries the response was YES. [2023-08-30 12:02:35,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259702 conditions, 75148 events. 50553/75148 cut-off events. For 140877/141148 co-relation queries the response was YES. Maximal size of possible extension queue 3681. Compared 583909 event pairs, 6432 based on Foata normal form. 738/50750 useless extension candidates. Maximal degree in co-relation 259666. Up to 40370 conditions per place. [2023-08-30 12:02:36,016 INFO L137 encePairwiseOnDemand]: 429/447 looper letters, 340 selfloop transitions, 141 changer transitions 1/484 dead transitions. [2023-08-30 12:02:36,016 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 484 transitions, 3872 flow [2023-08-30 12:02:36,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-08-30 12:02:36,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-08-30 12:02:36,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 4915 transitions. [2023-08-30 12:02:36,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2971763710018744 [2023-08-30 12:02:36,021 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 4915 transitions. [2023-08-30 12:02:36,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 4915 transitions. [2023-08-30 12:02:36,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:02:36,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 4915 transitions. [2023-08-30 12:02:36,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 132.83783783783784) internal successors, (4915), 37 states have internal predecessors, (4915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:02:36,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 447.0) internal successors, (16986), 38 states have internal predecessors, (16986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:02:36,037 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 447.0) internal successors, (16986), 38 states have internal predecessors, (16986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:02:36,037 INFO L175 Difference]: Start difference. First operand has 105 places, 120 transitions, 795 flow. Second operand 37 states and 4915 transitions. [2023-08-30 12:02:36,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 484 transitions, 3872 flow [2023-08-30 12:02:38,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 484 transitions, 3784 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 12:02:38,214 INFO L231 Difference]: Finished difference. Result has 150 places, 230 transitions, 2209 flow [2023-08-30 12:02:38,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=447, PETRI_DIFFERENCE_MINUEND_FLOW=759, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=2209, PETRI_PLACES=150, PETRI_TRANSITIONS=230} [2023-08-30 12:02:38,215 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 100 predicate places. [2023-08-30 12:02:38,215 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 230 transitions, 2209 flow [2023-08-30 12:02:38,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 125.85714285714286) internal successors, (2643), 21 states have internal predecessors, (2643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:02:38,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:02:38,216 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:02:38,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-30 12:02:38,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:02:38,418 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 12:02:38,419 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:02:38,419 INFO L85 PathProgramCache]: Analyzing trace with hash 155728900, now seen corresponding path program 1 times [2023-08-30 12:02:38,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:02:38,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900393878] [2023-08-30 12:02:38,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:02:38,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:02:38,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:02:38,936 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 12:02:38,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:02:38,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900393878] [2023-08-30 12:02:38,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900393878] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:02:38,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748094398] [2023-08-30 12:02:38,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:02:38,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:02:38,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:02:38,938 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:02:38,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-30 12:02:39,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:02:39,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-30 12:02:39,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:02:39,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 12:02:39,188 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 [2023-08-30 12:02:39,233 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 12:02:39,234 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 12:02:39,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748094398] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:02:39,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 12:02:39,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2023-08-30 12:02:39,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373615504] [2023-08-30 12:02:39,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:02:39,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 12:02:39,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:02:39,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 12:02:39,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-08-30 12:02:39,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 447 [2023-08-30 12:02:39,374 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 230 transitions, 2209 flow. Second operand has 7 states, 7 states have (on average 173.71428571428572) internal successors, (1216), 7 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:02:39,375 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:02:39,375 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 447 [2023-08-30 12:02:39,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand