./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-bad-ring.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/popl20-bad-ring.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 e1611f006d8b4d3ca09ba5acfb7e64e93bdf2d1c3a87f0ab00b1667331afb989 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 08:02:32,516 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 08:02:32,518 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 08:02:32,561 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 08:02:32,562 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 08:02:32,565 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 08:02:32,567 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 08:02:32,570 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 08:02:32,572 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 08:02:32,579 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 08:02:32,582 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 08:02:32,584 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 08:02:32,584 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 08:02:32,586 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 08:02:32,588 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 08:02:32,594 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 08:02:32,595 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 08:02:32,596 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 08:02:32,601 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 08:02:32,603 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 08:02:32,608 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 08:02:32,609 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 08:02:32,610 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 08:02:32,611 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 08:02:32,619 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 08:02:32,620 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 08:02:32,620 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 08:02:32,621 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 08:02:32,623 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 08:02:32,624 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 08:02:32,624 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 08:02:32,626 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 08:02:32,627 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 08:02:32,628 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 08:02:32,629 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 08:02:32,629 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 08:02:32,630 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 08:02:32,630 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 08:02:32,630 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 08:02:32,631 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 08:02:32,632 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 08:02:32,633 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 08:02:32,669 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 08:02:32,670 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 08:02:32,671 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 08:02:32,671 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 08:02:32,672 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 08:02:32,672 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 08:02:32,673 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 08:02:32,673 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 08:02:32,673 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 08:02:32,673 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 08:02:32,674 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 08:02:32,675 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 08:02:32,675 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 08:02:32,675 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 08:02:32,675 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 08:02:32,675 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 08:02:32,676 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 08:02:32,676 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 08:02:32,676 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 08:02:32,676 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 08:02:32,676 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 08:02:32,676 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 08:02:32,677 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 08:02:32,677 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 08:02:32,677 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 08:02:32,677 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 08:02:32,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:02:32,678 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 08:02:32,678 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 08:02:32,678 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 08:02:32,678 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 08:02:32,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 08:02:32,679 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 08:02:32,679 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 08:02:32,679 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 08:02:32,680 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 08:02:32,680 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 08:02:32,680 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e1611f006d8b4d3ca09ba5acfb7e64e93bdf2d1c3a87f0ab00b1667331afb989 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 08:02:33,022 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 08:02:33,039 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 08:02:33,041 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 08:02:33,042 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 08:02:33,042 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 08:02:33,044 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-ring.wvr.c [2023-09-01 08:02:34,153 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 08:02:34,361 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 08:02:34,362 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-ring.wvr.c [2023-09-01 08:02:34,370 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef9c50fa3/540bef0c6aa2460092fe50e153880103/FLAG8e0b0c038 [2023-09-01 08:02:34,381 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef9c50fa3/540bef0c6aa2460092fe50e153880103 [2023-09-01 08:02:34,383 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 08:02:34,385 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 08:02:34,386 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 08:02:34,386 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 08:02:34,388 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 08:02:34,389 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:02:34" (1/1) ... [2023-09-01 08:02:34,390 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c99c780 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:02:34, skipping insertion in model container [2023-09-01 08:02:34,391 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:02:34" (1/1) ... [2023-09-01 08:02:34,396 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 08:02:34,416 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 08:02:34,554 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-ring.wvr.c[3947,3960] [2023-09-01 08:02:34,559 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:02:34,567 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 08:02:34,596 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-ring.wvr.c[3947,3960] [2023-09-01 08:02:34,601 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:02:34,608 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 08:02:34,608 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 08:02:34,615 INFO L208 MainTranslator]: Completed translation [2023-09-01 08:02:34,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:02:34 WrapperNode [2023-09-01 08:02:34,615 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 08:02:34,616 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 08:02:34,616 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 08:02:34,616 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 08:02:34,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:02:34" (1/1) ... [2023-09-01 08:02:34,642 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:02:34" (1/1) ... [2023-09-01 08:02:34,703 INFO L138 Inliner]: procedures = 25, calls = 61, calls flagged for inlining = 16, calls inlined = 20, statements flattened = 357 [2023-09-01 08:02:34,712 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 08:02:34,712 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 08:02:34,713 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 08:02:34,713 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 08:02:34,730 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:02:34" (1/1) ... [2023-09-01 08:02:34,730 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:02:34" (1/1) ... [2023-09-01 08:02:34,746 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:02:34" (1/1) ... [2023-09-01 08:02:34,748 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:02:34" (1/1) ... [2023-09-01 08:02:34,757 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:02:34" (1/1) ... [2023-09-01 08:02:34,771 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:02:34" (1/1) ... [2023-09-01 08:02:34,779 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:02:34" (1/1) ... [2023-09-01 08:02:34,781 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:02:34" (1/1) ... [2023-09-01 08:02:34,784 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 08:02:34,787 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 08:02:34,787 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 08:02:34,787 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 08:02:34,788 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:02:34" (1/1) ... [2023-09-01 08:02:34,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:02:34,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:02:34,815 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 08:02:34,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 08:02:34,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 08:02:34,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 08:02:34,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 08:02:34,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 08:02:34,857 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 08:02:34,857 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 08:02:34,857 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 08:02:34,857 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 08:02:34,857 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 08:02:34,857 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 08:02:34,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 08:02:34,858 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 08:02:34,858 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 08:02:34,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 08:02:34,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 08:02:34,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 08:02:34,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 08:02:34,861 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 08:02:34,988 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 08:02:34,991 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 08:02:35,660 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 08:02:35,876 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 08:02:35,876 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-09-01 08:02:35,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:02:35 BoogieIcfgContainer [2023-09-01 08:02:35,881 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 08:02:35,883 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 08:02:35,884 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 08:02:35,886 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 08:02:35,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 08:02:34" (1/3) ... [2023-09-01 08:02:35,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b90d20f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:02:35, skipping insertion in model container [2023-09-01 08:02:35,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:02:34" (2/3) ... [2023-09-01 08:02:35,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b90d20f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:02:35, skipping insertion in model container [2023-09-01 08:02:35,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:02:35" (3/3) ... [2023-09-01 08:02:35,889 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-ring.wvr.c [2023-09-01 08:02:35,894 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 08:02:35,902 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 08:02:35,902 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2023-09-01 08:02:35,903 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 08:02:36,044 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 08:02:36,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 287 places, 299 transitions, 622 flow [2023-09-01 08:02:36,232 INFO L130 PetriNetUnfolder]: 22/296 cut-off events. [2023-09-01 08:02:36,232 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 08:02:36,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 309 conditions, 296 events. 22/296 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 357 event pairs, 0 based on Foata normal form. 0/242 useless extension candidates. Maximal degree in co-relation 250. Up to 3 conditions per place. [2023-09-01 08:02:36,240 INFO L82 GeneralOperation]: Start removeDead. Operand has 287 places, 299 transitions, 622 flow [2023-09-01 08:02:36,250 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 267 places, 278 transitions, 571 flow [2023-09-01 08:02:36,254 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 08:02:36,276 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 267 places, 278 transitions, 571 flow [2023-09-01 08:02:36,278 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 267 places, 278 transitions, 571 flow [2023-09-01 08:02:36,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 267 places, 278 transitions, 571 flow [2023-09-01 08:02:36,333 INFO L130 PetriNetUnfolder]: 21/278 cut-off events. [2023-09-01 08:02:36,334 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 08:02:36,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 290 conditions, 278 events. 21/278 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 355 event pairs, 0 based on Foata normal form. 0/225 useless extension candidates. Maximal degree in co-relation 250. Up to 3 conditions per place. [2023-09-01 08:02:36,340 INFO L119 LiptonReduction]: Number of co-enabled transitions 5314 [2023-09-01 08:02:47,509 INFO L134 LiptonReduction]: Checked pairs total: 14857 [2023-09-01 08:02:47,509 INFO L136 LiptonReduction]: Total number of compositions: 295 [2023-09-01 08:02:47,531 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 08:02:47,537 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;@42756180, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 08:02:47,537 INFO L358 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2023-09-01 08:02:47,539 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-09-01 08:02:47,540 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 08:02:47,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:02:47,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 08:02:47,541 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-09-01 08:02:47,545 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:02:47,545 INFO L85 PathProgramCache]: Analyzing trace with hash 44578, now seen corresponding path program 1 times [2023-09-01 08:02:47,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:02:47,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538084615] [2023-09-01 08:02:47,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:02:47,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:02:47,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:02:47,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:02:47,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:02:47,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538084615] [2023-09-01 08:02:47,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538084615] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:02:47,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:02:47,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 08:02:47,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502782804] [2023-09-01 08:02:47,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:02:47,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:02:47,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:02:47,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:02:47,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:02:47,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 594 [2023-09-01 08:02:47,870 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 63 transitions, 141 flow. Second operand has 3 states, 3 states have (on average 242.66666666666666) internal successors, (728), 3 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:02:47,871 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:02:47,871 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 594 [2023-09-01 08:02:47,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:02:50,053 INFO L130 PetriNetUnfolder]: 12771/18109 cut-off events. [2023-09-01 08:02:50,054 INFO L131 PetriNetUnfolder]: For 796/796 co-relation queries the response was YES. [2023-09-01 08:02:50,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36931 conditions, 18109 events. 12771/18109 cut-off events. For 796/796 co-relation queries the response was YES. Maximal size of possible extension queue 1165. Compared 105451 event pairs, 11314 based on Foata normal form. 0/7489 useless extension candidates. Maximal degree in co-relation 17050. Up to 9059 conditions per place. [2023-09-01 08:02:50,171 INFO L137 encePairwiseOnDemand]: 573/594 looper letters, 95 selfloop transitions, 6 changer transitions 0/101 dead transitions. [2023-09-01 08:02:50,171 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 101 transitions, 434 flow [2023-09-01 08:02:50,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:02:50,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:02:50,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 851 transitions. [2023-09-01 08:02:50,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4775533108866442 [2023-09-01 08:02:50,187 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 851 transitions. [2023-09-01 08:02:50,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 851 transitions. [2023-09-01 08:02:50,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:02:50,192 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 851 transitions. [2023-09-01 08:02:50,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 283.6666666666667) internal successors, (851), 3 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:02:50,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:02:50,205 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:02:50,206 INFO L175 Difference]: Start difference. First operand has 65 places, 63 transitions, 141 flow. Second operand 3 states and 851 transitions. [2023-09-01 08:02:50,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 101 transitions, 434 flow [2023-09-01 08:02:50,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 101 transitions, 416 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-09-01 08:02:50,235 INFO L231 Difference]: Finished difference. Result has 57 places, 59 transitions, 170 flow [2023-09-01 08:02:50,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=170, PETRI_PLACES=57, PETRI_TRANSITIONS=59} [2023-09-01 08:02:50,240 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -8 predicate places. [2023-09-01 08:02:50,241 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 59 transitions, 170 flow [2023-09-01 08:02:50,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 242.66666666666666) internal successors, (728), 3 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:02:50,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:02:50,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 08:02:50,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 08:02:50,242 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-09-01 08:02:50,254 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:02:50,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1383313, now seen corresponding path program 1 times [2023-09-01 08:02:50,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:02:50,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619901651] [2023-09-01 08:02:50,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:02:50,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:02:50,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:02:50,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:02:50,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:02:50,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619901651] [2023-09-01 08:02:50,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619901651] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:02:50,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296856422] [2023-09-01 08:02:50,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:02:50,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:02:50,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:02:50,363 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:02:50,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 08:02:50,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:02:50,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:02:50,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:02:50,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:02:50,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:02:50,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:02:50,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296856422] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:02:50,579 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:02:50,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-09-01 08:02:50,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312931867] [2023-09-01 08:02:50,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:02:50,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 08:02:50,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:02:50,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 08:02:50,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 08:02:50,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 594 [2023-09-01 08:02:50,689 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 59 transitions, 170 flow. Second operand has 7 states, 7 states have (on average 243.14285714285714) internal successors, (1702), 7 states have internal predecessors, (1702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:02:50,689 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:02:50,689 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 594 [2023-09-01 08:02:50,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:02:54,912 INFO L130 PetriNetUnfolder]: 31935/45271 cut-off events. [2023-09-01 08:02:54,912 INFO L131 PetriNetUnfolder]: For 450/450 co-relation queries the response was YES. [2023-09-01 08:02:54,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91759 conditions, 45271 events. 31935/45271 cut-off events. For 450/450 co-relation queries the response was YES. Maximal size of possible extension queue 2241. Compared 290766 event pairs, 28285 based on Foata normal form. 0/18736 useless extension candidates. Maximal degree in co-relation 73323. Up to 9057 conditions per place. [2023-09-01 08:02:55,196 INFO L137 encePairwiseOnDemand]: 582/594 looper letters, 218 selfloop transitions, 33 changer transitions 0/251 dead transitions. [2023-09-01 08:02:55,198 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 251 transitions, 1140 flow [2023-09-01 08:02:55,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 08:02:55,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 08:02:55,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1954 transitions. [2023-09-01 08:02:55,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46993746993746993 [2023-09-01 08:02:55,205 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1954 transitions. [2023-09-01 08:02:55,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1954 transitions. [2023-09-01 08:02:55,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:02:55,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1954 transitions. [2023-09-01 08:02:55,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 279.14285714285717) internal successors, (1954), 7 states have internal predecessors, (1954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:02:55,219 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 594.0) internal successors, (4752), 8 states have internal predecessors, (4752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:02:55,221 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 594.0) internal successors, (4752), 8 states have internal predecessors, (4752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:02:55,222 INFO L175 Difference]: Start difference. First operand has 57 places, 59 transitions, 170 flow. Second operand 7 states and 1954 transitions. [2023-09-01 08:02:55,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 251 transitions, 1140 flow [2023-09-01 08:02:55,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 251 transitions, 1116 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:02:55,230 INFO L231 Difference]: Finished difference. Result has 64 places, 83 transitions, 377 flow [2023-09-01 08:02:55,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=377, PETRI_PLACES=64, PETRI_TRANSITIONS=83} [2023-09-01 08:02:55,231 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -1 predicate places. [2023-09-01 08:02:55,231 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 83 transitions, 377 flow [2023-09-01 08:02:55,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 243.14285714285714) internal successors, (1702), 7 states have internal predecessors, (1702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:02:55,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:02:55,233 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-09-01 08:02:55,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-09-01 08:02:55,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:02:55,440 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-09-01 08:02:55,441 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:02:55,441 INFO L85 PathProgramCache]: Analyzing trace with hash 42884099, now seen corresponding path program 1 times [2023-09-01 08:02:55,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:02:55,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478481574] [2023-09-01 08:02:55,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:02:55,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:02:55,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:02:55,529 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:02:55,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:02:55,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478481574] [2023-09-01 08:02:55,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478481574] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:02:55,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:02:55,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:02:55,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137489149] [2023-09-01 08:02:55,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:02:55,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:02:55,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:02:55,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:02:55,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:02:55,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 594 [2023-09-01 08:02:55,567 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 83 transitions, 377 flow. Second operand has 3 states, 3 states have (on average 243.33333333333334) internal successors, (730), 3 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:02:55,568 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:02:55,568 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 594 [2023-09-01 08:02:55,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:02:58,800 INFO L130 PetriNetUnfolder]: 31926/45259 cut-off events. [2023-09-01 08:02:58,800 INFO L131 PetriNetUnfolder]: For 455/455 co-relation queries the response was YES. [2023-09-01 08:02:58,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91762 conditions, 45259 events. 31926/45259 cut-off events. For 455/455 co-relation queries the response was YES. Maximal size of possible extension queue 2431. Compared 293593 event pairs, 28285 based on Foata normal form. 2/18737 useless extension candidates. Maximal degree in co-relation 55029. Up to 45259 conditions per place. [2023-09-01 08:02:59,029 INFO L137 encePairwiseOnDemand]: 590/594 looper letters, 70 selfloop transitions, 1 changer transitions 0/71 dead transitions. [2023-09-01 08:02:59,030 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 71 transitions, 438 flow [2023-09-01 08:02:59,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:02:59,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:02:59,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 780 transitions. [2023-09-01 08:02:59,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4377104377104377 [2023-09-01 08:02:59,033 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 780 transitions. [2023-09-01 08:02:59,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 780 transitions. [2023-09-01 08:02:59,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:02:59,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 780 transitions. [2023-09-01 08:02:59,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 260.0) internal successors, (780), 3 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:02:59,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:02:59,041 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:02:59,041 INFO L175 Difference]: Start difference. First operand has 64 places, 83 transitions, 377 flow. Second operand 3 states and 780 transitions. [2023-09-01 08:02:59,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 71 transitions, 438 flow [2023-09-01 08:02:59,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 71 transitions, 408 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-09-01 08:02:59,045 INFO L231 Difference]: Finished difference. Result has 61 places, 71 transitions, 268 flow [2023-09-01 08:02:59,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=268, PETRI_PLACES=61, PETRI_TRANSITIONS=71} [2023-09-01 08:02:59,047 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -4 predicate places. [2023-09-01 08:02:59,047 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 71 transitions, 268 flow [2023-09-01 08:02:59,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 243.33333333333334) internal successors, (730), 3 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:02:59,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:02:59,048 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-09-01 08:02:59,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 08:02:59,049 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-09-01 08:02:59,049 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:02:59,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1738010142, now seen corresponding path program 2 times [2023-09-01 08:02:59,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:02:59,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379791277] [2023-09-01 08:02:59,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:02:59,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:02:59,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:02:59,207 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:02:59,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:02:59,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379791277] [2023-09-01 08:02:59,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379791277] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:02:59,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867349977] [2023-09-01 08:02:59,209 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:02:59,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:02:59,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:02:59,214 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:02:59,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 08:02:59,320 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 08:02:59,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:02:59,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 08:02:59,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:02:59,338 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-09-01 08:02:59,339 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:02:59,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867349977] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:02:59,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:02:59,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-09-01 08:02:59,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540354511] [2023-09-01 08:02:59,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:02:59,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:02:59,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:02:59,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:02:59,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-09-01 08:02:59,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 594 [2023-09-01 08:02:59,375 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 71 transitions, 268 flow. Second operand has 3 states, 3 states have (on average 246.0) internal successors, (738), 3 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:02:59,376 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:02:59,376 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 594 [2023-09-01 08:02:59,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:03:02,862 INFO L130 PetriNetUnfolder]: 31926/45258 cut-off events. [2023-09-01 08:03:02,862 INFO L131 PetriNetUnfolder]: For 459/459 co-relation queries the response was YES. [2023-09-01 08:03:02,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91740 conditions, 45258 events. 31926/45258 cut-off events. For 459/459 co-relation queries the response was YES. Maximal size of possible extension queue 2468. Compared 293545 event pairs, 28285 based on Foata normal form. 1/18737 useless extension candidates. Maximal degree in co-relation 91728. Up to 45253 conditions per place. [2023-09-01 08:03:03,053 INFO L137 encePairwiseOnDemand]: 591/594 looper letters, 64 selfloop transitions, 6 changer transitions 0/70 dead transitions. [2023-09-01 08:03:03,054 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 70 transitions, 398 flow [2023-09-01 08:03:03,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:03:03,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:03:03,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 786 transitions. [2023-09-01 08:03:03,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44107744107744107 [2023-09-01 08:03:03,057 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 786 transitions. [2023-09-01 08:03:03,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 786 transitions. [2023-09-01 08:03:03,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:03:03,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 786 transitions. [2023-09-01 08:03:03,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 262.0) internal successors, (786), 3 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:03,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:03,064 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:03,064 INFO L175 Difference]: Start difference. First operand has 61 places, 71 transitions, 268 flow. Second operand 3 states and 786 transitions. [2023-09-01 08:03:03,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 70 transitions, 398 flow [2023-09-01 08:03:03,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 70 transitions, 397 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:03:03,066 INFO L231 Difference]: Finished difference. Result has 61 places, 70 transitions, 269 flow [2023-09-01 08:03:03,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=269, PETRI_PLACES=61, PETRI_TRANSITIONS=70} [2023-09-01 08:03:03,067 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -4 predicate places. [2023-09-01 08:03:03,067 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 70 transitions, 269 flow [2023-09-01 08:03:03,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 246.0) internal successors, (738), 3 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:03,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:03:03,068 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:03:03,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-09-01 08:03:03,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-09-01 08:03:03,277 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-09-01 08:03:03,278 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:03:03,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1514382284, now seen corresponding path program 1 times [2023-09-01 08:03:03,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:03:03,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530024488] [2023-09-01 08:03:03,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:03:03,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:03:03,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:03:03,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:03:03,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:03:03,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530024488] [2023-09-01 08:03:03,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530024488] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:03:03,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:03:03,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:03:03,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664983943] [2023-09-01 08:03:03,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:03:03,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:03:03,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:03:03,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:03:03,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 08:03:03,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 594 [2023-09-01 08:03:03,429 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 70 transitions, 269 flow. Second operand has 4 states, 4 states have (on average 238.75) internal successors, (955), 4 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:03,429 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:03:03,429 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 594 [2023-09-01 08:03:03,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:03:06,756 INFO L130 PetriNetUnfolder]: 32586/46395 cut-off events. [2023-09-01 08:03:06,756 INFO L131 PetriNetUnfolder]: For 465/465 co-relation queries the response was YES. [2023-09-01 08:03:06,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94111 conditions, 46395 events. 32586/46395 cut-off events. For 465/465 co-relation queries the response was YES. Maximal size of possible extension queue 2468. Compared 302770 event pairs, 28900 based on Foata normal form. 450/20043 useless extension candidates. Maximal degree in co-relation 94098. Up to 45257 conditions per place. [2023-09-01 08:03:07,053 INFO L137 encePairwiseOnDemand]: 585/594 looper letters, 102 selfloop transitions, 3 changer transitions 1/106 dead transitions. [2023-09-01 08:03:07,054 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 106 transitions, 628 flow [2023-09-01 08:03:07,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 08:03:07,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 08:03:07,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1030 transitions. [2023-09-01 08:03:07,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4335016835016835 [2023-09-01 08:03:07,057 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1030 transitions. [2023-09-01 08:03:07,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1030 transitions. [2023-09-01 08:03:07,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:03:07,059 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1030 transitions. [2023-09-01 08:03:07,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 257.5) internal successors, (1030), 4 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:07,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 594.0) internal successors, (2970), 5 states have internal predecessors, (2970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:07,067 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 594.0) internal successors, (2970), 5 states have internal predecessors, (2970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:07,067 INFO L175 Difference]: Start difference. First operand has 61 places, 70 transitions, 269 flow. Second operand 4 states and 1030 transitions. [2023-09-01 08:03:07,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 106 transitions, 628 flow [2023-09-01 08:03:07,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 106 transitions, 616 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:03:07,071 INFO L231 Difference]: Finished difference. Result has 63 places, 70 transitions, 276 flow [2023-09-01 08:03:07,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=59, 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=276, PETRI_PLACES=63, PETRI_TRANSITIONS=70} [2023-09-01 08:03:07,072 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -2 predicate places. [2023-09-01 08:03:07,072 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 70 transitions, 276 flow [2023-09-01 08:03:07,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 238.75) internal successors, (955), 4 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:07,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:03:07,073 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-09-01 08:03:07,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 08:03:07,073 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-09-01 08:03:07,074 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:03:07,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1536134945, now seen corresponding path program 1 times [2023-09-01 08:03:07,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:03:07,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50757153] [2023-09-01 08:03:07,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:03:07,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:03:07,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:03:07,183 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:03:07,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:03:07,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50757153] [2023-09-01 08:03:07,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50757153] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:03:07,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813056061] [2023-09-01 08:03:07,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:03:07,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:03:07,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:03:07,188 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:03:07,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-01 08:03:07,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:03:07,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 7 conjunts are in the unsatisfiable core [2023-09-01 08:03:07,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:03:07,324 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:03:07,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:03:07,378 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:03:07,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813056061] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:03:07,379 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:03:07,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-09-01 08:03:07,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866038475] [2023-09-01 08:03:07,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:03:07,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 08:03:07,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:03:07,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 08:03:07,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-09-01 08:03:07,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 594 [2023-09-01 08:03:07,524 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 70 transitions, 276 flow. Second operand has 13 states, 13 states have (on average 243.15384615384616) internal successors, (3161), 13 states have internal predecessors, (3161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:07,524 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:03:07,524 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 594 [2023-09-01 08:03:07,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:03:16,173 INFO L130 PetriNetUnfolder]: 71688/102063 cut-off events. [2023-09-01 08:03:16,173 INFO L131 PetriNetUnfolder]: For 6310/6310 co-relation queries the response was YES. [2023-09-01 08:03:16,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222513 conditions, 102063 events. 71688/102063 cut-off events. For 6310/6310 co-relation queries the response was YES. Maximal size of possible extension queue 3008. Compared 700841 event pairs, 63580 based on Foata normal form. 24/43106 useless extension candidates. Maximal degree in co-relation 222499. Up to 15533 conditions per place. [2023-09-01 08:03:16,723 INFO L137 encePairwiseOnDemand]: 586/594 looper letters, 469 selfloop transitions, 51 changer transitions 0/520 dead transitions. [2023-09-01 08:03:16,723 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 520 transitions, 2504 flow [2023-09-01 08:03:16,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 08:03:16,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 08:03:16,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3436 transitions. [2023-09-01 08:03:16,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4820426487093154 [2023-09-01 08:03:16,732 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3436 transitions. [2023-09-01 08:03:16,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3436 transitions. [2023-09-01 08:03:16,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:03:16,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3436 transitions. [2023-09-01 08:03:16,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 286.3333333333333) internal successors, (3436), 12 states have internal predecessors, (3436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:16,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 594.0) internal successors, (7722), 13 states have internal predecessors, (7722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:16,753 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 594.0) internal successors, (7722), 13 states have internal predecessors, (7722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:16,753 INFO L175 Difference]: Start difference. First operand has 63 places, 70 transitions, 276 flow. Second operand 12 states and 3436 transitions. [2023-09-01 08:03:16,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 520 transitions, 2504 flow [2023-09-01 08:03:16,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 520 transitions, 2498 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-09-01 08:03:16,763 INFO L231 Difference]: Finished difference. Result has 79 places, 100 transitions, 618 flow [2023-09-01 08:03:16,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=618, PETRI_PLACES=79, PETRI_TRANSITIONS=100} [2023-09-01 08:03:16,764 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 14 predicate places. [2023-09-01 08:03:16,764 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 100 transitions, 618 flow [2023-09-01 08:03:16,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 243.15384615384616) internal successors, (3161), 13 states have internal predecessors, (3161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:16,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:03:16,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:03:16,773 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-09-01 08:03:16,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:03:16,971 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-09-01 08:03:16,971 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:03:16,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1338899493, now seen corresponding path program 1 times [2023-09-01 08:03:16,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:03:16,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241644631] [2023-09-01 08:03:16,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:03:16,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:03:16,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:03:17,067 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:03:17,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:03:17,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241644631] [2023-09-01 08:03:17,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241644631] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:03:17,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783346683] [2023-09-01 08:03:17,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:03:17,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:03:17,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:03:17,070 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:03:17,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-09-01 08:03:17,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:03:17,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:03:17,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:03:17,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:03:17,215 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:03:17,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783346683] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:03:17,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:03:17,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-09-01 08:03:17,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634053451] [2023-09-01 08:03:17,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:03:17,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:03:17,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:03:17,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:03:17,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-09-01 08:03:17,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 594 [2023-09-01 08:03:17,223 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 100 transitions, 618 flow. Second operand has 3 states, 3 states have (on average 251.66666666666666) internal successors, (755), 3 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) [2023-09-01 08:03:17,223 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:03:17,223 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 594 [2023-09-01 08:03:17,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:03:23,609 INFO L130 PetriNetUnfolder]: 53978/77071 cut-off events. [2023-09-01 08:03:23,610 INFO L131 PetriNetUnfolder]: For 5535/5535 co-relation queries the response was YES. [2023-09-01 08:03:23,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163296 conditions, 77071 events. 53978/77071 cut-off events. For 5535/5535 co-relation queries the response was YES. Maximal size of possible extension queue 2472. Compared 515528 event pairs, 47256 based on Foata normal form. 0/34847 useless extension candidates. Maximal degree in co-relation 163275. Up to 77071 conditions per place. [2023-09-01 08:03:24,095 INFO L137 encePairwiseOnDemand]: 590/594 looper letters, 96 selfloop transitions, 1 changer transitions 0/97 dead transitions. [2023-09-01 08:03:24,095 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 97 transitions, 800 flow [2023-09-01 08:03:24,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:03:24,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:03:24,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 797 transitions. [2023-09-01 08:03:24,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44725028058361394 [2023-09-01 08:03:24,097 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 797 transitions. [2023-09-01 08:03:24,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 797 transitions. [2023-09-01 08:03:24,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:03:24,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 797 transitions. [2023-09-01 08:03:24,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 265.6666666666667) internal successors, (797), 3 states have internal predecessors, (797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:24,102 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:24,102 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:24,103 INFO L175 Difference]: Start difference. First operand has 79 places, 100 transitions, 618 flow. Second operand 3 states and 797 transitions. [2023-09-01 08:03:24,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 97 transitions, 800 flow [2023-09-01 08:03:24,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 97 transitions, 656 flow, removed 39 selfloop flow, removed 5 redundant places. [2023-09-01 08:03:24,113 INFO L231 Difference]: Finished difference. Result has 73 places, 97 transitions, 464 flow [2023-09-01 08:03:24,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=464, PETRI_PLACES=73, PETRI_TRANSITIONS=97} [2023-09-01 08:03:24,115 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 8 predicate places. [2023-09-01 08:03:24,115 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 97 transitions, 464 flow [2023-09-01 08:03:24,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 251.66666666666666) internal successors, (755), 3 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) [2023-09-01 08:03:24,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:03:24,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:03:24,122 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-09-01 08:03:24,321 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 [2023-09-01 08:03:24,321 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-09-01 08:03:24,322 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:03:24,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1443791074, now seen corresponding path program 1 times [2023-09-01 08:03:24,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:03:24,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901336502] [2023-09-01 08:03:24,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:03:24,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:03:24,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:03:24,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:03:24,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:03:24,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901336502] [2023-09-01 08:03:24,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901336502] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:03:24,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:03:24,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:03:24,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748069078] [2023-09-01 08:03:24,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:03:24,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:03:24,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:03:24,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:03:24,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:03:24,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 594 [2023-09-01 08:03:24,403 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 97 transitions, 464 flow. Second operand has 3 states, 3 states have (on average 252.0) internal successors, (756), 3 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) [2023-09-01 08:03:24,403 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:03:24,403 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 594 [2023-09-01 08:03:24,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:03:35,214 INFO L130 PetriNetUnfolder]: 90366/128859 cut-off events. [2023-09-01 08:03:35,214 INFO L131 PetriNetUnfolder]: For 6614/6614 co-relation queries the response was YES. [2023-09-01 08:03:35,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274083 conditions, 128859 events. 90366/128859 cut-off events. For 6614/6614 co-relation queries the response was YES. Maximal size of possible extension queue 4012. Compared 948209 event pairs, 46332 based on Foata normal form. 0/57950 useless extension candidates. Maximal degree in co-relation 274062. Up to 75598 conditions per place. [2023-09-01 08:03:35,971 INFO L137 encePairwiseOnDemand]: 590/594 looper letters, 129 selfloop transitions, 2 changer transitions 0/131 dead transitions. [2023-09-01 08:03:35,971 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 131 transitions, 805 flow [2023-09-01 08:03:35,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:03:35,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:03:35,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 830 transitions. [2023-09-01 08:03:35,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4657687991021324 [2023-09-01 08:03:35,974 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 830 transitions. [2023-09-01 08:03:35,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 830 transitions. [2023-09-01 08:03:35,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:03:35,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 830 transitions. [2023-09-01 08:03:35,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 276.6666666666667) internal successors, (830), 3 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:35,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:35,979 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:35,979 INFO L175 Difference]: Start difference. First operand has 73 places, 97 transitions, 464 flow. Second operand 3 states and 830 transitions. [2023-09-01 08:03:35,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 131 transitions, 805 flow [2023-09-01 08:03:35,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 131 transitions, 804 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:03:35,985 INFO L231 Difference]: Finished difference. Result has 75 places, 98 transitions, 477 flow [2023-09-01 08:03:35,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=463, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=477, PETRI_PLACES=75, PETRI_TRANSITIONS=98} [2023-09-01 08:03:35,986 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 10 predicate places. [2023-09-01 08:03:35,986 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 98 transitions, 477 flow [2023-09-01 08:03:35,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 252.0) internal successors, (756), 3 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) [2023-09-01 08:03:35,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:03:35,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:03:35,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 08:03:35,987 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-09-01 08:03:35,987 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:03:35,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1443791102, now seen corresponding path program 1 times [2023-09-01 08:03:35,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:03:35,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500512728] [2023-09-01 08:03:35,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:03:35,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:03:36,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:03:36,065 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:03:36,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:03:36,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500512728] [2023-09-01 08:03:36,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500512728] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:03:36,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:03:36,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:03:36,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605761758] [2023-09-01 08:03:36,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:03:36,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:03:36,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:03:36,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:03:36,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:03:36,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 594 [2023-09-01 08:03:36,081 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 98 transitions, 477 flow. Second operand has 3 states, 3 states have (on average 250.0) internal successors, (750), 3 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:36,087 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:03:36,087 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 594 [2023-09-01 08:03:36,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:03:47,470 INFO L130 PetriNetUnfolder]: 96779/137054 cut-off events. [2023-09-01 08:03:47,470 INFO L131 PetriNetUnfolder]: For 24621/24621 co-relation queries the response was YES. [2023-09-01 08:03:47,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302937 conditions, 137054 events. 96779/137054 cut-off events. For 24621/24621 co-relation queries the response was YES. Maximal size of possible extension queue 4036. Compared 965282 event pairs, 27940 based on Foata normal form. 3212/66871 useless extension candidates. Maximal degree in co-relation 302915. Up to 111420 conditions per place. [2023-09-01 08:03:48,546 INFO L137 encePairwiseOnDemand]: 585/594 looper letters, 119 selfloop transitions, 5 changer transitions 0/124 dead transitions. [2023-09-01 08:03:48,547 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 124 transitions, 788 flow [2023-09-01 08:03:48,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:03:48,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:03:48,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 818 transitions. [2023-09-01 08:03:48,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4590347923681257 [2023-09-01 08:03:48,549 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 818 transitions. [2023-09-01 08:03:48,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 818 transitions. [2023-09-01 08:03:48,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:03:48,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 818 transitions. [2023-09-01 08:03:48,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 272.6666666666667) internal successors, (818), 3 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:48,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:48,555 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:48,556 INFO L175 Difference]: Start difference. First operand has 75 places, 98 transitions, 477 flow. Second operand 3 states and 818 transitions. [2023-09-01 08:03:48,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 124 transitions, 788 flow [2023-09-01 08:03:48,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 124 transitions, 785 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:03:48,608 INFO L231 Difference]: Finished difference. Result has 77 places, 102 transitions, 514 flow [2023-09-01 08:03:48,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=514, PETRI_PLACES=77, PETRI_TRANSITIONS=102} [2023-09-01 08:03:48,609 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 12 predicate places. [2023-09-01 08:03:48,609 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 102 transitions, 514 flow [2023-09-01 08:03:48,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 250.0) internal successors, (750), 3 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:48,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:03:48,610 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:03:48,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 08:03:48,610 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-09-01 08:03:48,611 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:03:48,611 INFO L85 PathProgramCache]: Analyzing trace with hash -237755367, now seen corresponding path program 1 times [2023-09-01 08:03:48,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:03:48,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904231935] [2023-09-01 08:03:48,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:03:48,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:03:48,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:03:48,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:03:48,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:03:48,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904231935] [2023-09-01 08:03:48,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904231935] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:03:48,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:03:48,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 08:03:48,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278704275] [2023-09-01 08:03:48,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:03:48,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:03:48,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:03:48,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:03:48,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 08:03:48,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 594 [2023-09-01 08:03:48,752 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 102 transitions, 514 flow. Second operand has 4 states, 4 states have (on average 239.75) internal successors, (959), 4 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:48,752 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:03:48,752 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 594 [2023-09-01 08:03:48,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:03:59,351 INFO L130 PetriNetUnfolder]: 88876/125989 cut-off events. [2023-09-01 08:03:59,351 INFO L131 PetriNetUnfolder]: For 18217/18217 co-relation queries the response was YES. [2023-09-01 08:03:59,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 309083 conditions, 125989 events. 88876/125989 cut-off events. For 18217/18217 co-relation queries the response was YES. Maximal size of possible extension queue 4101. Compared 896229 event pairs, 70614 based on Foata normal form. 100/58886 useless extension candidates. Maximal degree in co-relation 309059. Up to 124582 conditions per place. [2023-09-01 08:04:00,193 INFO L137 encePairwiseOnDemand]: 584/594 looper letters, 115 selfloop transitions, 13 changer transitions 0/128 dead transitions. [2023-09-01 08:04:00,194 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 128 transitions, 836 flow [2023-09-01 08:04:00,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 08:04:00,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 08:04:00,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1029 transitions. [2023-09-01 08:04:00,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43308080808080807 [2023-09-01 08:04:00,196 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1029 transitions. [2023-09-01 08:04:00,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1029 transitions. [2023-09-01 08:04:00,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:04:00,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1029 transitions. [2023-09-01 08:04:00,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 257.25) internal successors, (1029), 4 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:00,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 594.0) internal successors, (2970), 5 states have internal predecessors, (2970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:00,201 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 594.0) internal successors, (2970), 5 states have internal predecessors, (2970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:00,202 INFO L175 Difference]: Start difference. First operand has 77 places, 102 transitions, 514 flow. Second operand 4 states and 1029 transitions. [2023-09-01 08:04:00,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 128 transitions, 836 flow [2023-09-01 08:04:00,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 128 transitions, 831 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:04:00,230 INFO L231 Difference]: Finished difference. Result has 81 places, 103 transitions, 567 flow [2023-09-01 08:04:00,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=509, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=567, PETRI_PLACES=81, PETRI_TRANSITIONS=103} [2023-09-01 08:04:00,231 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 16 predicate places. [2023-09-01 08:04:00,231 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 103 transitions, 567 flow [2023-09-01 08:04:00,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 239.75) internal successors, (959), 4 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:00,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:04:00,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:04:00,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 08:04:00,232 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-09-01 08:04:00,232 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:04:00,233 INFO L85 PathProgramCache]: Analyzing trace with hash -237755479, now seen corresponding path program 1 times [2023-09-01 08:04:00,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:04:00,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452228162] [2023-09-01 08:04:00,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:04:00,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:04:00,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:04:00,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:04:00,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:04:00,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452228162] [2023-09-01 08:04:00,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452228162] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:04:00,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:04:00,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:04:00,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474247141] [2023-09-01 08:04:00,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:04:00,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:04:00,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:04:00,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:04:00,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:04:00,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 594 [2023-09-01 08:04:00,340 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 103 transitions, 567 flow. Second operand has 3 states, 3 states have (on average 248.66666666666666) internal successors, (746), 3 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:00,341 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:04:00,341 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 594 [2023-09-01 08:04:00,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:04:10,408 INFO L130 PetriNetUnfolder]: 81402/115339 cut-off events. [2023-09-01 08:04:10,408 INFO L131 PetriNetUnfolder]: For 20417/20417 co-relation queries the response was YES. [2023-09-01 08:04:10,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293433 conditions, 115339 events. 81402/115339 cut-off events. For 20417/20417 co-relation queries the response was YES. Maximal size of possible extension queue 3558. Compared 797174 event pairs, 27538 based on Foata normal form. 1428/56730 useless extension candidates. Maximal degree in co-relation 293407. Up to 109747 conditions per place. [2023-09-01 08:04:11,256 INFO L137 encePairwiseOnDemand]: 584/594 looper letters, 115 selfloop transitions, 5 changer transitions 0/120 dead transitions. [2023-09-01 08:04:11,256 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 120 transitions, 852 flow [2023-09-01 08:04:11,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:04:11,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:04:11,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 804 transitions. [2023-09-01 08:04:11,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4511784511784512 [2023-09-01 08:04:11,258 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 804 transitions. [2023-09-01 08:04:11,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 804 transitions. [2023-09-01 08:04:11,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:04:11,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 804 transitions. [2023-09-01 08:04:11,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 268.0) internal successors, (804), 3 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:11,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:11,262 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:11,262 INFO L175 Difference]: Start difference. First operand has 81 places, 103 transitions, 567 flow. Second operand 3 states and 804 transitions. [2023-09-01 08:04:11,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 120 transitions, 852 flow [2023-09-01 08:04:11,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 120 transitions, 838 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-09-01 08:04:11,452 INFO L231 Difference]: Finished difference. Result has 83 places, 107 transitions, 594 flow [2023-09-01 08:04:11,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=553, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=594, PETRI_PLACES=83, PETRI_TRANSITIONS=107} [2023-09-01 08:04:11,453 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 18 predicate places. [2023-09-01 08:04:11,453 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 107 transitions, 594 flow [2023-09-01 08:04:11,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 248.66666666666666) internal successors, (746), 3 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:11,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:04:11,454 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:04:11,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 08:04:11,454 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-09-01 08:04:11,455 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:04:11,455 INFO L85 PathProgramCache]: Analyzing trace with hash -142394446, now seen corresponding path program 1 times [2023-09-01 08:04:11,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:04:11,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299115297] [2023-09-01 08:04:11,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:04:11,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:04:11,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:04:11,609 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:04:11,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:04:11,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299115297] [2023-09-01 08:04:11,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299115297] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:04:11,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:04:11,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 08:04:11,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793861958] [2023-09-01 08:04:11,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:04:11,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:04:11,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:04:11,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:04:11,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 08:04:11,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 594 [2023-09-01 08:04:11,683 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 107 transitions, 594 flow. Second operand has 4 states, 4 states have (on average 239.75) internal successors, (959), 4 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:11,683 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:04:11,683 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 594 [2023-09-01 08:04:11,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:04:22,253 INFO L130 PetriNetUnfolder]: 83052/118355 cut-off events. [2023-09-01 08:04:22,253 INFO L131 PetriNetUnfolder]: For 30959/30959 co-relation queries the response was YES. [2023-09-01 08:04:22,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 337193 conditions, 118355 events. 83052/118355 cut-off events. For 30959/30959 co-relation queries the response was YES. Maximal size of possible extension queue 3620. Compared 829266 event pairs, 54986 based on Foata normal form. 616/62910 useless extension candidates. Maximal degree in co-relation 337165. Up to 115327 conditions per place. [2023-09-01 08:04:23,105 INFO L137 encePairwiseOnDemand]: 584/594 looper letters, 106 selfloop transitions, 13 changer transitions 16/135 dead transitions. [2023-09-01 08:04:23,105 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 135 transitions, 1002 flow [2023-09-01 08:04:23,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 08:04:23,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 08:04:23,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1021 transitions. [2023-09-01 08:04:23,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4297138047138047 [2023-09-01 08:04:23,107 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1021 transitions. [2023-09-01 08:04:23,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1021 transitions. [2023-09-01 08:04:23,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:04:23,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1021 transitions. [2023-09-01 08:04:23,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 255.25) internal successors, (1021), 4 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:23,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 594.0) internal successors, (2970), 5 states have internal predecessors, (2970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:23,111 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 594.0) internal successors, (2970), 5 states have internal predecessors, (2970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:23,112 INFO L175 Difference]: Start difference. First operand has 83 places, 107 transitions, 594 flow. Second operand 4 states and 1021 transitions. [2023-09-01 08:04:23,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 135 transitions, 1002 flow [2023-09-01 08:04:23,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 135 transitions, 997 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:04:23,234 INFO L231 Difference]: Finished difference. Result has 86 places, 107 transitions, 630 flow [2023-09-01 08:04:23,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=589, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=630, PETRI_PLACES=86, PETRI_TRANSITIONS=107} [2023-09-01 08:04:23,234 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 21 predicate places. [2023-09-01 08:04:23,234 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 107 transitions, 630 flow [2023-09-01 08:04:23,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 239.75) internal successors, (959), 4 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:23,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:04:23,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:04:23,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 08:04:23,235 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-09-01 08:04:23,235 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:04:23,235 INFO L85 PathProgramCache]: Analyzing trace with hash 331490807, now seen corresponding path program 1 times [2023-09-01 08:04:23,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:04:23,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936541431] [2023-09-01 08:04:23,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:04:23,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:04:23,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:04:23,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 08:04:23,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:04:23,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936541431] [2023-09-01 08:04:23,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936541431] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:04:23,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:04:23,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:04:23,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565446525] [2023-09-01 08:04:23,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:04:23,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:04:23,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:04:23,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:04:23,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:04:23,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 594 [2023-09-01 08:04:23,308 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 107 transitions, 630 flow. Second operand has 3 states, 3 states have (on average 253.0) internal successors, (759), 3 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:23,309 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:04:23,309 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 594 [2023-09-01 08:04:23,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand