./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-bad-three-array-sum-alt.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/popl20-bad-three-array-sum-alt.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 6727abf6d3311127e7c3f388ca276994a5a41bcb1f2faca3217c66ebe13b8b8f --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 15:22:14,667 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 15:22:14,669 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 15:22:14,712 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 15:22:14,712 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 15:22:14,715 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 15:22:14,717 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 15:22:14,719 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 15:22:14,720 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 15:22:14,721 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 15:22:14,722 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 15:22:14,722 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 15:22:14,723 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 15:22:14,723 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 15:22:14,724 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 15:22:14,725 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 15:22:14,726 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 15:22:14,726 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 15:22:14,727 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 15:22:14,729 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 15:22:14,735 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 15:22:14,737 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 15:22:14,738 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 15:22:14,740 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 15:22:14,750 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 15:22:14,751 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 15:22:14,751 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 15:22:14,753 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 15:22:14,754 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 15:22:14,754 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 15:22:14,755 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 15:22:14,756 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 15:22:14,758 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 15:22:14,759 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 15:22:14,760 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 15:22:14,760 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 15:22:14,760 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 15:22:14,761 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 15:22:14,761 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 15:22:14,761 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 15:22:14,762 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 15:22:14,764 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 15:22:14,798 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 15:22:14,798 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 15:22:14,800 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 15:22:14,800 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 15:22:14,801 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 15:22:14,801 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 15:22:14,801 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 15:22:14,802 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 15:22:14,802 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 15:22:14,802 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 15:22:14,803 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 15:22:14,803 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 15:22:14,803 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 15:22:14,803 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 15:22:14,804 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 15:22:14,804 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 15:22:14,804 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 15:22:14,804 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 15:22:14,804 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 15:22:14,804 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 15:22:14,805 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 15:22:14,805 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 15:22:14,805 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 15:22:14,805 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 15:22:14,805 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 15:22:14,806 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 15:22:14,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:22:14,806 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 15:22:14,806 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 15:22:14,806 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 15:22:14,807 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 15:22:14,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 15:22:14,807 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 15:22:14,807 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 15:22:14,807 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 15:22:14,808 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 15:22:14,808 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 15:22:14,808 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6727abf6d3311127e7c3f388ca276994a5a41bcb1f2faca3217c66ebe13b8b8f Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 15:22:15,108 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 15:22:15,128 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 15:22:15,131 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 15:22:15,132 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 15:22:15,133 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 15:22:15,134 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-three-array-sum-alt.wvr.c [2023-08-30 15:22:16,382 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 15:22:16,590 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 15:22:16,591 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-three-array-sum-alt.wvr.c [2023-08-30 15:22:16,598 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5736a16e1/8aed439f58bf4edc901138e92a8c2fbf/FLAGb2977f236 [2023-08-30 15:22:16,609 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5736a16e1/8aed439f58bf4edc901138e92a8c2fbf [2023-08-30 15:22:16,611 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 15:22:16,612 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 15:22:16,614 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 15:22:16,614 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 15:22:16,617 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 15:22:16,617 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:22:16" (1/1) ... [2023-08-30 15:22:16,618 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52160b1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:22:16, skipping insertion in model container [2023-08-30 15:22:16,618 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:22:16" (1/1) ... [2023-08-30 15:22:16,623 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 15:22:16,640 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 15:22:16,784 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-three-array-sum-alt.wvr.c[2412,2425] [2023-08-30 15:22:16,801 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:22:16,813 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 15:22:16,849 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-three-array-sum-alt.wvr.c[2412,2425] [2023-08-30 15:22:16,856 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:22:16,871 INFO L208 MainTranslator]: Completed translation [2023-08-30 15:22:16,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:22:16 WrapperNode [2023-08-30 15:22:16,872 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 15:22:16,873 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 15:22:16,873 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 15:22:16,873 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 15:22:16,878 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:22:16" (1/1) ... [2023-08-30 15:22:16,896 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:22:16" (1/1) ... [2023-08-30 15:22:16,961 INFO L138 Inliner]: procedures = 26, calls = 45, calls flagged for inlining = 15, calls inlined = 27, statements flattened = 357 [2023-08-30 15:22:16,962 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 15:22:16,963 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 15:22:16,963 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 15:22:16,964 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 15:22:16,971 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:22:16" (1/1) ... [2023-08-30 15:22:16,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:22:16" (1/1) ... [2023-08-30 15:22:16,983 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:22:16" (1/1) ... [2023-08-30 15:22:17,005 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:22:16" (1/1) ... [2023-08-30 15:22:17,033 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:22:16" (1/1) ... [2023-08-30 15:22:17,039 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:22:16" (1/1) ... [2023-08-30 15:22:17,049 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:22:16" (1/1) ... [2023-08-30 15:22:17,051 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:22:16" (1/1) ... [2023-08-30 15:22:17,054 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 15:22:17,058 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 15:22:17,059 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 15:22:17,059 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 15:22:17,060 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:22:16" (1/1) ... [2023-08-30 15:22:17,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:22:17,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:22:17,090 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 15:22:17,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 15:22:17,130 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 15:22:17,131 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 15:22:17,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 15:22:17,131 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 15:22:17,131 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 15:22:17,132 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 15:22:17,132 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 15:22:17,132 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 15:22:17,132 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 15:22:17,132 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 15:22:17,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 15:22:17,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 15:22:17,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 15:22:17,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 15:22:17,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 15:22:17,135 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 15:22:17,252 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 15:22:17,253 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 15:22:17,820 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 15:22:17,833 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 15:22:17,833 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-30 15:22:17,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:22:17 BoogieIcfgContainer [2023-08-30 15:22:17,836 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 15:22:17,838 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 15:22:17,838 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 15:22:17,840 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 15:22:17,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 03:22:16" (1/3) ... [2023-08-30 15:22:17,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d12be0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:22:17, skipping insertion in model container [2023-08-30 15:22:17,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:22:16" (2/3) ... [2023-08-30 15:22:17,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d12be0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:22:17, skipping insertion in model container [2023-08-30 15:22:17,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:22:17" (3/3) ... [2023-08-30 15:22:17,843 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-three-array-sum-alt.wvr.c [2023-08-30 15:22:17,850 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 15:22:17,859 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 15:22:17,859 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2023-08-30 15:22:17,859 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 15:22:17,987 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 15:22:18,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 425 places, 454 transitions, 932 flow [2023-08-30 15:22:18,148 INFO L130 PetriNetUnfolder]: 39/451 cut-off events. [2023-08-30 15:22:18,148 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 15:22:18,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 464 conditions, 451 events. 39/451 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 942 event pairs, 0 based on Foata normal form. 0/370 useless extension candidates. Maximal degree in co-relation 277. Up to 2 conditions per place. [2023-08-30 15:22:18,158 INFO L82 GeneralOperation]: Start removeDead. Operand has 425 places, 454 transitions, 932 flow [2023-08-30 15:22:18,166 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 402 places, 430 transitions, 878 flow [2023-08-30 15:22:18,170 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 15:22:18,178 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 402 places, 430 transitions, 878 flow [2023-08-30 15:22:18,181 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 402 places, 430 transitions, 878 flow [2023-08-30 15:22:18,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 402 places, 430 transitions, 878 flow [2023-08-30 15:22:18,272 INFO L130 PetriNetUnfolder]: 38/430 cut-off events. [2023-08-30 15:22:18,272 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 15:22:18,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 443 conditions, 430 events. 38/430 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 879 event pairs, 0 based on Foata normal form. 0/351 useless extension candidates. Maximal degree in co-relation 277. Up to 2 conditions per place. [2023-08-30 15:22:18,291 INFO L119 LiptonReduction]: Number of co-enabled transitions 37326 [2023-08-30 15:22:43,395 INFO L134 LiptonReduction]: Checked pairs total: 38791 [2023-08-30 15:22:43,395 INFO L136 LiptonReduction]: Total number of compositions: 576 [2023-08-30 15:22:43,408 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 15:22:43,414 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;@43e619b3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 15:22:43,414 INFO L358 AbstractCegarLoop]: Starting to check reachability of 75 error locations. [2023-08-30 15:22:43,416 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 15:22:43,416 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 15:22:43,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:22:43,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 15:22:43,417 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-08-30 15:22:43,421 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:22:43,422 INFO L85 PathProgramCache]: Analyzing trace with hash 60481, now seen corresponding path program 1 times [2023-08-30 15:22:43,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:22:43,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568230687] [2023-08-30 15:22:43,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:22:43,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:22:43,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:22:43,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:22:43,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:22:43,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568230687] [2023-08-30 15:22:43,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568230687] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:22:43,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:22:43,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:22:43,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160986456] [2023-08-30 15:22:43,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:22:43,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:22:43,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:22:43,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:22:43,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:22:43,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 415 out of 1030 [2023-08-30 15:22:43,787 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 69 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 415.6666666666667) internal successors, (1247), 3 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:22:43,787 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:22:43,787 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 415 of 1030 [2023-08-30 15:22:43,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:22:47,266 INFO L130 PetriNetUnfolder]: 17709/22097 cut-off events. [2023-08-30 15:22:47,267 INFO L131 PetriNetUnfolder]: For 278/278 co-relation queries the response was YES. [2023-08-30 15:22:47,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44603 conditions, 22097 events. 17709/22097 cut-off events. For 278/278 co-relation queries the response was YES. Maximal size of possible extension queue 2207. Compared 111250 event pairs, 8670 based on Foata normal form. 0/4889 useless extension candidates. Maximal degree in co-relation 20211. Up to 10962 conditions per place. [2023-08-30 15:22:47,440 INFO L137 encePairwiseOnDemand]: 1006/1030 looper letters, 95 selfloop transitions, 6 changer transitions 0/104 dead transitions. [2023-08-30 15:22:47,441 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 104 transitions, 446 flow [2023-08-30 15:22:47,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:22:47,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:22:47,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1376 transitions. [2023-08-30 15:22:47,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4453074433656958 [2023-08-30 15:22:47,463 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1376 transitions. [2023-08-30 15:22:47,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1376 transitions. [2023-08-30 15:22:47,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:22:47,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1376 transitions. [2023-08-30 15:22:47,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 458.6666666666667) internal successors, (1376), 3 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:22:47,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1030.0) internal successors, (4120), 4 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:22:47,490 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1030.0) internal successors, (4120), 4 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:22:47,492 INFO L175 Difference]: Start difference. First operand has 73 places, 69 transitions, 156 flow. Second operand 3 states and 1376 transitions. [2023-08-30 15:22:47,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 104 transitions, 446 flow [2023-08-30 15:22:47,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 104 transitions, 422 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-30 15:22:47,516 INFO L231 Difference]: Finished difference. Result has 59 places, 62 transitions, 176 flow [2023-08-30 15:22:47,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=59, PETRI_TRANSITIONS=62} [2023-08-30 15:22:47,522 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -14 predicate places. [2023-08-30 15:22:47,523 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 62 transitions, 176 flow [2023-08-30 15:22:47,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 415.6666666666667) internal successors, (1247), 3 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:22:47,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:22:47,526 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 15:22:47,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 15:22:47,529 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-08-30 15:22:47,530 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:22:47,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1876647, now seen corresponding path program 1 times [2023-08-30 15:22:47,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:22:47,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312656402] [2023-08-30 15:22:47,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:22:47,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:22:47,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:22:47,624 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:22:47,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:22:47,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312656402] [2023-08-30 15:22:47,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312656402] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:22:47,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:22:47,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:22:47,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794355442] [2023-08-30 15:22:47,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:22:47,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:22:47,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:22:47,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:22:47,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:22:47,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 415 out of 1030 [2023-08-30 15:22:47,656 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 62 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 416.0) internal successors, (1248), 3 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:22:47,656 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:22:47,656 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 415 of 1030 [2023-08-30 15:22:47,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:22:50,493 INFO L130 PetriNetUnfolder]: 17709/22094 cut-off events. [2023-08-30 15:22:50,493 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-08-30 15:22:50,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44212 conditions, 22094 events. 17709/22094 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 2594. Compared 112449 event pairs, 8670 based on Foata normal form. 0/4895 useless extension candidates. Maximal degree in co-relation 22086. Up to 21912 conditions per place. [2023-08-30 15:22:50,598 INFO L137 encePairwiseOnDemand]: 1026/1030 looper letters, 55 selfloop transitions, 1 changer transitions 0/59 dead transitions. [2023-08-30 15:22:50,598 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 59 transitions, 276 flow [2023-08-30 15:22:50,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:22:50,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:22:50,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1299 transitions. [2023-08-30 15:22:50,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4203883495145631 [2023-08-30 15:22:50,602 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1299 transitions. [2023-08-30 15:22:50,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1299 transitions. [2023-08-30 15:22:50,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:22:50,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1299 transitions. [2023-08-30 15:22:50,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 433.0) internal successors, (1299), 3 states have internal predecessors, (1299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:22:50,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1030.0) internal successors, (4120), 4 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:22:50,613 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1030.0) internal successors, (4120), 4 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:22:50,613 INFO L175 Difference]: Start difference. First operand has 59 places, 62 transitions, 176 flow. Second operand 3 states and 1299 transitions. [2023-08-30 15:22:50,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 59 transitions, 276 flow [2023-08-30 15:22:50,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 59 transitions, 264 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:22:50,616 INFO L231 Difference]: Finished difference. Result has 56 places, 59 transitions, 154 flow [2023-08-30 15:22:50,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=56, PETRI_TRANSITIONS=59} [2023-08-30 15:22:50,617 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -17 predicate places. [2023-08-30 15:22:50,617 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 59 transitions, 154 flow [2023-08-30 15:22:50,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 416.0) internal successors, (1248), 3 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:22:50,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:22:50,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 15:22:50,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 15:22:50,619 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-08-30 15:22:50,621 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:22:50,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1876648, now seen corresponding path program 1 times [2023-08-30 15:22:50,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:22:50,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840757181] [2023-08-30 15:22:50,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:22:50,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:22:50,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:22:50,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:22:50,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:22:50,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840757181] [2023-08-30 15:22:50,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840757181] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:22:50,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476336891] [2023-08-30 15:22:50,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:22:50,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:22:50,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:22:50,708 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:22:50,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 15:22:50,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:22:50,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:22:50,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:22:50,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:22:50,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:22:50,910 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:22:50,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476336891] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:22:50,911 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:22:50,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 15:22:50,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327052974] [2023-08-30 15:22:50,911 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:22:50,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 15:22:50,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:22:50,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 15:22:50,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 15:22:50,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 415 out of 1030 [2023-08-30 15:22:50,990 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 59 transitions, 154 flow. Second operand has 7 states, 7 states have (on average 416.14285714285717) internal successors, (2913), 7 states have internal predecessors, (2913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:22:50,990 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:22:50,990 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 415 of 1030 [2023-08-30 15:22:50,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:22:57,018 INFO L130 PetriNetUnfolder]: 44271/55229 cut-off events. [2023-08-30 15:22:57,018 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-08-30 15:22:57,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110492 conditions, 55229 events. 44271/55229 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 4701. Compared 304298 event pairs, 21675 based on Foata normal form. 0/12226 useless extension candidates. Maximal degree in co-relation 110484. Up to 10960 conditions per place. [2023-08-30 15:22:57,298 INFO L137 encePairwiseOnDemand]: 1021/1030 looper letters, 218 selfloop transitions, 21 changer transitions 0/242 dead transitions. [2023-08-30 15:22:57,299 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 242 transitions, 1052 flow [2023-08-30 15:22:57,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 15:22:57,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 15:22:57,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2738 transitions. [2023-08-30 15:22:57,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.443042071197411 [2023-08-30 15:22:57,307 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2738 transitions. [2023-08-30 15:22:57,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2738 transitions. [2023-08-30 15:22:57,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:22:57,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2738 transitions. [2023-08-30 15:22:57,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 456.3333333333333) internal successors, (2738), 6 states have internal predecessors, (2738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:22:57,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1030.0) internal successors, (7210), 7 states have internal predecessors, (7210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:22:57,327 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1030.0) internal successors, (7210), 7 states have internal predecessors, (7210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:22:57,327 INFO L175 Difference]: Start difference. First operand has 56 places, 59 transitions, 154 flow. Second operand 6 states and 2738 transitions. [2023-08-30 15:22:57,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 242 transitions, 1052 flow [2023-08-30 15:22:57,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 242 transitions, 1051 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:22:57,333 INFO L231 Difference]: Finished difference. Result has 63 places, 74 transitions, 303 flow [2023-08-30 15:22:57,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=303, PETRI_PLACES=63, PETRI_TRANSITIONS=74} [2023-08-30 15:22:57,335 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -10 predicate places. [2023-08-30 15:22:57,335 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 74 transitions, 303 flow [2023-08-30 15:22:57,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 416.14285714285717) internal successors, (2913), 7 states have internal predecessors, (2913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:22:57,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:22:57,337 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 15:22:57,346 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 15:22:57,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:22:57,543 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-08-30 15:22:57,543 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:22:57,543 INFO L85 PathProgramCache]: Analyzing trace with hash 74339778, now seen corresponding path program 2 times [2023-08-30 15:22:57,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:22:57,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277317099] [2023-08-30 15:22:57,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:22:57,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:22:57,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:22:57,654 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:22:57,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:22:57,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277317099] [2023-08-30 15:22:57,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277317099] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:22:57,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65426626] [2023-08-30 15:22:57,655 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:22:57,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:22:57,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:22:57,659 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:22:57,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 15:22:57,752 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 15:22:57,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:22:57,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 15:22:57,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:22:57,768 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 15:22:57,769 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:22:57,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65426626] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:22:57,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:22:57,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 15:22:57,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903147408] [2023-08-30 15:22:57,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:22:57,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:22:57,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:22:57,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:22:57,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 15:22:57,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 418 out of 1030 [2023-08-30 15:22:57,802 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 74 transitions, 303 flow. Second operand has 3 states, 3 states have (on average 419.0) internal successors, (1257), 3 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:22:57,802 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:22:57,802 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 418 of 1030 [2023-08-30 15:22:57,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:23:03,865 INFO L130 PetriNetUnfolder]: 44271/55228 cut-off events. [2023-08-30 15:23:03,866 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-08-30 15:23:03,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110537 conditions, 55228 events. 44271/55228 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 4648. Compared 304814 event pairs, 21675 based on Foata normal form. 1/12235 useless extension candidates. Maximal degree in co-relation 110525. Up to 54768 conditions per place. [2023-08-30 15:23:04,132 INFO L137 encePairwiseOnDemand]: 1027/1030 looper letters, 64 selfloop transitions, 6 changer transitions 0/73 dead transitions. [2023-08-30 15:23:04,133 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 73 transitions, 433 flow [2023-08-30 15:23:04,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:23:04,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:23:04,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1305 transitions. [2023-08-30 15:23:04,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4223300970873786 [2023-08-30 15:23:04,137 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1305 transitions. [2023-08-30 15:23:04,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1305 transitions. [2023-08-30 15:23:04,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:23:04,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1305 transitions. [2023-08-30 15:23:04,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 435.0) internal successors, (1305), 3 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:23:04,146 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1030.0) internal successors, (4120), 4 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:23:04,148 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1030.0) internal successors, (4120), 4 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:23:04,148 INFO L175 Difference]: Start difference. First operand has 63 places, 74 transitions, 303 flow. Second operand 3 states and 1305 transitions. [2023-08-30 15:23:04,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 73 transitions, 433 flow [2023-08-30 15:23:04,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 73 transitions, 403 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-08-30 15:23:04,151 INFO L231 Difference]: Finished difference. Result has 63 places, 73 transitions, 275 flow [2023-08-30 15:23:04,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=275, PETRI_PLACES=63, PETRI_TRANSITIONS=73} [2023-08-30 15:23:04,154 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -10 predicate places. [2023-08-30 15:23:04,154 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 73 transitions, 275 flow [2023-08-30 15:23:04,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 419.0) internal successors, (1257), 3 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:23:04,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:23:04,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:23:04,163 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-30 15:23:04,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-30 15:23:04,360 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-08-30 15:23:04,361 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:23:04,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1126192154, now seen corresponding path program 1 times [2023-08-30 15:23:04,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:23:04,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381681778] [2023-08-30 15:23:04,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:23:04,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:23:04,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:23:04,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:23:04,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:23:04,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381681778] [2023-08-30 15:23:04,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381681778] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:23:04,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:23:04,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:23:04,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089439199] [2023-08-30 15:23:04,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:23:04,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:23:04,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:23:04,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:23:04,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:23:04,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 422 out of 1030 [2023-08-30 15:23:04,469 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 73 transitions, 275 flow. Second operand has 3 states, 3 states have (on average 424.0) internal successors, (1272), 3 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:23:04,470 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:23:04,470 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 422 of 1030 [2023-08-30 15:23:04,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:23:12,111 INFO L130 PetriNetUnfolder]: 58916/74263 cut-off events. [2023-08-30 15:23:12,111 INFO L131 PetriNetUnfolder]: For 54/54 co-relation queries the response was YES. [2023-08-30 15:23:12,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148996 conditions, 74263 events. 58916/74263 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 6065. Compared 440060 event pairs, 10355 based on Foata normal form. 0/17172 useless extension candidates. Maximal degree in co-relation 148983. Up to 51246 conditions per place. [2023-08-30 15:23:12,418 INFO L137 encePairwiseOnDemand]: 1022/1030 looper letters, 102 selfloop transitions, 4 changer transitions 0/109 dead transitions. [2023-08-30 15:23:12,418 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 109 transitions, 564 flow [2023-08-30 15:23:12,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:23:12,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:23:12,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1356 transitions. [2023-08-30 15:23:12,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4388349514563107 [2023-08-30 15:23:12,422 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1356 transitions. [2023-08-30 15:23:12,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1356 transitions. [2023-08-30 15:23:12,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:23:12,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1356 transitions. [2023-08-30 15:23:12,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 452.0) internal successors, (1356), 3 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:23:12,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1030.0) internal successors, (4120), 4 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:23:12,432 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1030.0) internal successors, (4120), 4 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:23:12,432 INFO L175 Difference]: Start difference. First operand has 63 places, 73 transitions, 275 flow. Second operand 3 states and 1356 transitions. [2023-08-30 15:23:12,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 109 transitions, 564 flow [2023-08-30 15:23:12,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 109 transitions, 552 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:23:12,437 INFO L231 Difference]: Finished difference. Result has 64 places, 76 transitions, 295 flow [2023-08-30 15:23:12,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=295, PETRI_PLACES=64, PETRI_TRANSITIONS=76} [2023-08-30 15:23:12,440 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -9 predicate places. [2023-08-30 15:23:12,441 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 76 transitions, 295 flow [2023-08-30 15:23:12,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 424.0) internal successors, (1272), 3 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:23:12,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:23:12,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:23:12,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 15:23:12,442 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-08-30 15:23:12,443 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:23:12,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1126192174, now seen corresponding path program 1 times [2023-08-30 15:23:12,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:23:12,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419052073] [2023-08-30 15:23:12,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:23:12,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:23:12,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:23:12,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:23:12,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:23:12,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419052073] [2023-08-30 15:23:12,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419052073] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:23:12,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:23:12,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:23:12,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936278478] [2023-08-30 15:23:12,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:23:12,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:23:12,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:23:12,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:23:12,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:23:12,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 422 out of 1030 [2023-08-30 15:23:12,506 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 76 transitions, 295 flow. Second operand has 3 states, 3 states have (on average 424.3333333333333) internal successors, (1273), 3 states have internal predecessors, (1273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:23:12,506 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:23:12,506 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 422 of 1030 [2023-08-30 15:23:12,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:23:20,006 INFO L130 PetriNetUnfolder]: 58331/74763 cut-off events. [2023-08-30 15:23:20,006 INFO L131 PetriNetUnfolder]: For 2101/2101 co-relation queries the response was YES. [2023-08-30 15:23:20,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157222 conditions, 74763 events. 58331/74763 cut-off events. For 2101/2101 co-relation queries the response was YES. Maximal size of possible extension queue 6382. Compared 466557 event pairs, 13935 based on Foata normal form. 0/21056 useless extension candidates. Maximal degree in co-relation 157208. Up to 47904 conditions per place. [2023-08-30 15:23:20,315 INFO L137 encePairwiseOnDemand]: 1026/1030 looper letters, 103 selfloop transitions, 2 changer transitions 0/107 dead transitions. [2023-08-30 15:23:20,316 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 107 transitions, 566 flow [2023-08-30 15:23:20,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:23:20,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:23:20,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1353 transitions. [2023-08-30 15:23:20,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43786407766990293 [2023-08-30 15:23:20,321 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1353 transitions. [2023-08-30 15:23:20,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1353 transitions. [2023-08-30 15:23:20,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:23:20,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1353 transitions. [2023-08-30 15:23:20,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 451.0) internal successors, (1353), 3 states have internal predecessors, (1353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:23:20,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1030.0) internal successors, (4120), 4 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:23:20,330 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1030.0) internal successors, (4120), 4 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:23:20,330 INFO L175 Difference]: Start difference. First operand has 64 places, 76 transitions, 295 flow. Second operand 3 states and 1353 transitions. [2023-08-30 15:23:20,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 107 transitions, 566 flow [2023-08-30 15:23:20,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 107 transitions, 564 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:23:20,339 INFO L231 Difference]: Finished difference. Result has 65 places, 74 transitions, 287 flow [2023-08-30 15:23:20,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=287, PETRI_PLACES=65, PETRI_TRANSITIONS=74} [2023-08-30 15:23:20,340 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -8 predicate places. [2023-08-30 15:23:20,340 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 74 transitions, 287 flow [2023-08-30 15:23:20,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 424.3333333333333) internal successors, (1273), 3 states have internal predecessors, (1273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:23:20,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:23:20,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:23:20,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 15:23:20,341 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-08-30 15:23:20,341 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:23:20,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1126192153, now seen corresponding path program 1 times [2023-08-30 15:23:20,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:23:20,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603843763] [2023-08-30 15:23:20,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:23:20,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:23:20,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:23:20,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:23:20,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:23:20,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603843763] [2023-08-30 15:23:20,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603843763] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:23:20,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:23:20,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 15:23:20,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384046438] [2023-08-30 15:23:20,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:23:20,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 15:23:20,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:23:20,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 15:23:20,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 15:23:20,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 407 out of 1030 [2023-08-30 15:23:20,680 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 74 transitions, 287 flow. Second operand has 5 states, 5 states have (on average 408.4) internal successors, (2042), 5 states have internal predecessors, (2042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:23:20,680 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:23:20,680 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 407 of 1030 [2023-08-30 15:23:20,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:23:27,851 INFO L130 PetriNetUnfolder]: 56628/73379 cut-off events. [2023-08-30 15:23:27,851 INFO L131 PetriNetUnfolder]: For 5195/5195 co-relation queries the response was YES. [2023-08-30 15:23:27,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154484 conditions, 73379 events. 56628/73379 cut-off events. For 5195/5195 co-relation queries the response was YES. Maximal size of possible extension queue 6222. Compared 468628 event pairs, 27332 based on Foata normal form. 890/23091 useless extension candidates. Maximal degree in co-relation 154470. Up to 57222 conditions per place. [2023-08-30 15:23:28,141 INFO L137 encePairwiseOnDemand]: 1017/1030 looper letters, 173 selfloop transitions, 23 changer transitions 0/198 dead transitions. [2023-08-30 15:23:28,141 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 198 transitions, 1018 flow [2023-08-30 15:23:28,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 15:23:28,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 15:23:28,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3034 transitions. [2023-08-30 15:23:28,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42080443828016645 [2023-08-30 15:23:28,149 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3034 transitions. [2023-08-30 15:23:28,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3034 transitions. [2023-08-30 15:23:28,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:23:28,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3034 transitions. [2023-08-30 15:23:28,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 433.42857142857144) internal successors, (3034), 7 states have internal predecessors, (3034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:23:28,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1030.0) internal successors, (8240), 8 states have internal predecessors, (8240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:23:28,166 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1030.0) internal successors, (8240), 8 states have internal predecessors, (8240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:23:28,166 INFO L175 Difference]: Start difference. First operand has 65 places, 74 transitions, 287 flow. Second operand 7 states and 3034 transitions. [2023-08-30 15:23:28,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 198 transitions, 1018 flow [2023-08-30 15:23:28,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 198 transitions, 1012 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:23:28,260 INFO L231 Difference]: Finished difference. Result has 74 places, 84 transitions, 444 flow [2023-08-30 15:23:28,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=444, PETRI_PLACES=74, PETRI_TRANSITIONS=84} [2023-08-30 15:23:28,260 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 1 predicate places. [2023-08-30 15:23:28,261 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 84 transitions, 444 flow [2023-08-30 15:23:28,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 408.4) internal successors, (2042), 5 states have internal predecessors, (2042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:23:28,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:23:28,261 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-08-30 15:23:28,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 15:23:28,261 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-08-30 15:23:28,262 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:23:28,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1119647531, now seen corresponding path program 1 times [2023-08-30 15:23:28,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:23:28,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596036423] [2023-08-30 15:23:28,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:23:28,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:23:28,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:23:28,332 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 15:23:28,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:23:28,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596036423] [2023-08-30 15:23:28,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596036423] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:23:28,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:23:28,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 15:23:28,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135364984] [2023-08-30 15:23:28,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:23:28,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:23:28,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:23:28,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:23:28,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 15:23:28,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 407 out of 1030 [2023-08-30 15:23:28,416 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 84 transitions, 444 flow. Second operand has 4 states, 4 states have (on average 408.25) internal successors, (1633), 4 states have internal predecessors, (1633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:23:28,416 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:23:28,416 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 407 of 1030 [2023-08-30 15:23:28,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:23:34,440 INFO L130 PetriNetUnfolder]: 43251/56075 cut-off events. [2023-08-30 15:23:34,441 INFO L131 PetriNetUnfolder]: For 49397/49798 co-relation queries the response was YES. [2023-08-30 15:23:34,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142171 conditions, 56075 events. 43251/56075 cut-off events. For 49397/49798 co-relation queries the response was YES. Maximal size of possible extension queue 5347. Compared 353354 event pairs, 25296 based on Foata normal form. 403/21973 useless extension candidates. Maximal degree in co-relation 142152. Up to 53434 conditions per place. [2023-08-30 15:23:34,719 INFO L137 encePairwiseOnDemand]: 1023/1030 looper letters, 89 selfloop transitions, 15 changer transitions 0/108 dead transitions. [2023-08-30 15:23:34,719 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 108 transitions, 656 flow [2023-08-30 15:23:34,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 15:23:34,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 15:23:34,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1718 transitions. [2023-08-30 15:23:34,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41699029126213594 [2023-08-30 15:23:34,724 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1718 transitions. [2023-08-30 15:23:34,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1718 transitions. [2023-08-30 15:23:34,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:23:34,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1718 transitions. [2023-08-30 15:23:34,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 429.5) internal successors, (1718), 4 states have internal predecessors, (1718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:23:34,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1030.0) internal successors, (5150), 5 states have internal predecessors, (5150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:23:34,733 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1030.0) internal successors, (5150), 5 states have internal predecessors, (5150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:23:34,733 INFO L175 Difference]: Start difference. First operand has 74 places, 84 transitions, 444 flow. Second operand 4 states and 1718 transitions. [2023-08-30 15:23:34,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 108 transitions, 656 flow [2023-08-30 15:23:34,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 108 transitions, 638 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-08-30 15:23:34,760 INFO L231 Difference]: Finished difference. Result has 73 places, 77 transitions, 390 flow [2023-08-30 15:23:34,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=390, PETRI_PLACES=73, PETRI_TRANSITIONS=77} [2023-08-30 15:23:34,761 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 0 predicate places. [2023-08-30 15:23:34,761 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 77 transitions, 390 flow [2023-08-30 15:23:34,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 408.25) internal successors, (1633), 4 states have internal predecessors, (1633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:23:34,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:23:34,762 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2023-08-30 15:23:34,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 15:23:34,762 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-08-30 15:23:34,763 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:23:34,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1536217221, now seen corresponding path program 1 times [2023-08-30 15:23:34,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:23:34,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17560431] [2023-08-30 15:23:34,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:23:34,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:23:34,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:23:34,865 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 15:23:34,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:23:34,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17560431] [2023-08-30 15:23:34,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17560431] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:23:34,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555006374] [2023-08-30 15:23:34,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:23:34,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:23:34,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:23:34,868 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:23:34,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 15:23:34,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:23:34,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 15:23:34,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:23:35,050 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 15:23:35,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:23:35,102 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 15:23:35,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555006374] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:23:35,102 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:23:35,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 13 [2023-08-30 15:23:35,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060034751] [2023-08-30 15:23:35,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:23:35,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 15:23:35,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:23:35,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 15:23:35,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2023-08-30 15:23:35,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 404 out of 1030 [2023-08-30 15:23:35,532 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 77 transitions, 390 flow. Second operand has 14 states, 14 states have (on average 405.2857142857143) internal successors, (5674), 14 states have internal predecessors, (5674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:23:35,532 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:23:35,532 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 404 of 1030 [2023-08-30 15:23:35,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:23:42,363 INFO L130 PetriNetUnfolder]: 48331/62749 cut-off events. [2023-08-30 15:23:42,363 INFO L131 PetriNetUnfolder]: For 18971/19372 co-relation queries the response was YES. [2023-08-30 15:23:42,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142130 conditions, 62749 events. 48331/62749 cut-off events. For 18971/19372 co-relation queries the response was YES. Maximal size of possible extension queue 4769. Compared 393100 event pairs, 28231 based on Foata normal form. 2143/25182 useless extension candidates. Maximal degree in co-relation 142111. Up to 40062 conditions per place. [2023-08-30 15:23:42,683 INFO L137 encePairwiseOnDemand]: 1018/1030 looper letters, 162 selfloop transitions, 27 changer transitions 0/193 dead transitions. [2023-08-30 15:23:42,683 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 193 transitions, 1103 flow [2023-08-30 15:23:42,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 15:23:42,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 15:23:42,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 4224 transitions. [2023-08-30 15:23:42,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41009708737864076 [2023-08-30 15:23:42,693 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 4224 transitions. [2023-08-30 15:23:42,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 4224 transitions. [2023-08-30 15:23:42,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:23:42,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 4224 transitions. [2023-08-30 15:23:42,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 422.4) internal successors, (4224), 10 states have internal predecessors, (4224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:23:42,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 1030.0) internal successors, (11330), 11 states have internal predecessors, (11330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:23:42,715 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 1030.0) internal successors, (11330), 11 states have internal predecessors, (11330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:23:42,715 INFO L175 Difference]: Start difference. First operand has 73 places, 77 transitions, 390 flow. Second operand 10 states and 4224 transitions. [2023-08-30 15:23:42,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 193 transitions, 1103 flow [2023-08-30 15:23:42,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 193 transitions, 1068 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:23:42,736 INFO L231 Difference]: Finished difference. Result has 84 places, 84 transitions, 508 flow [2023-08-30 15:23:42,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=363, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=508, PETRI_PLACES=84, PETRI_TRANSITIONS=84} [2023-08-30 15:23:42,737 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 11 predicate places. [2023-08-30 15:23:42,737 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 84 transitions, 508 flow [2023-08-30 15:23:42,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 405.2857142857143) internal successors, (5674), 14 states have internal predecessors, (5674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:23:42,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:23:42,739 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1] [2023-08-30 15:23:42,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 15:23:42,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:23:42,944 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-08-30 15:23:42,945 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:23:42,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1564975723, now seen corresponding path program 2 times [2023-08-30 15:23:42,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:23:42,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965600485] [2023-08-30 15:23:42,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:23:42,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:23:42,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:23:43,069 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 15:23:43,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:23:43,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965600485] [2023-08-30 15:23:43,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965600485] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:23:43,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445174584] [2023-08-30 15:23:43,071 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:23:43,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:23:43,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:23:43,072 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:23:43,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 15:23:43,167 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 15:23:43,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:23:43,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 15:23:43,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:23:43,195 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-30 15:23:43,195 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:23:43,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [445174584] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:23:43,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:23:43,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2023-08-30 15:23:43,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556053729] [2023-08-30 15:23:43,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:23:43,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:23:43,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:23:43,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:23:43,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-08-30 15:23:43,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 416 out of 1030 [2023-08-30 15:23:43,272 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 84 transitions, 508 flow. Second operand has 4 states, 4 states have (on average 417.25) internal successors, (1669), 4 states have internal predecessors, (1669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:23:43,272 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:23:43,272 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 416 of 1030 [2023-08-30 15:23:43,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:23:48,837 INFO L130 PetriNetUnfolder]: 42562/54764 cut-off events. [2023-08-30 15:23:48,837 INFO L131 PetriNetUnfolder]: For 33194/33595 co-relation queries the response was YES. [2023-08-30 15:23:48,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118385 conditions, 54764 events. 42562/54764 cut-off events. For 33194/33595 co-relation queries the response was YES. Maximal size of possible extension queue 3447. Compared 328749 event pairs, 23861 based on Foata normal form. 3676/21360 useless extension candidates. Maximal degree in co-relation 118362. Up to 54470 conditions per place. [2023-08-30 15:23:49,114 INFO L137 encePairwiseOnDemand]: 1024/1030 looper letters, 74 selfloop transitions, 1 changer transitions 0/79 dead transitions. [2023-08-30 15:23:49,114 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 79 transitions, 604 flow [2023-08-30 15:23:49,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:23:49,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:23:49,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1298 transitions. [2023-08-30 15:23:49,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42006472491909386 [2023-08-30 15:23:49,118 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1298 transitions. [2023-08-30 15:23:49,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1298 transitions. [2023-08-30 15:23:49,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:23:49,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1298 transitions. [2023-08-30 15:23:49,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 432.6666666666667) internal successors, (1298), 3 states have internal predecessors, (1298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:23:49,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1030.0) internal successors, (4120), 4 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:23:49,125 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1030.0) internal successors, (4120), 4 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:23:49,125 INFO L175 Difference]: Start difference. First operand has 84 places, 84 transitions, 508 flow. Second operand 3 states and 1298 transitions. [2023-08-30 15:23:49,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 79 transitions, 604 flow [2023-08-30 15:23:49,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 79 transitions, 511 flow, removed 5 selfloop flow, removed 9 redundant places. [2023-08-30 15:23:49,145 INFO L231 Difference]: Finished difference. Result has 71 places, 79 transitions, 363 flow [2023-08-30 15:23:49,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=363, PETRI_PLACES=71, PETRI_TRANSITIONS=79} [2023-08-30 15:23:49,145 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -2 predicate places. [2023-08-30 15:23:49,146 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 79 transitions, 363 flow [2023-08-30 15:23:49,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 417.25) internal successors, (1669), 4 states have internal predecessors, (1669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:23:49,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:23:49,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:23:49,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 15:23:49,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:23:49,351 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-08-30 15:23:49,352 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:23:49,352 INFO L85 PathProgramCache]: Analyzing trace with hash -43015009, now seen corresponding path program 1 times [2023-08-30 15:23:49,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:23:49,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316200772] [2023-08-30 15:23:49,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:23:49,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:23:49,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:23:49,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:23:49,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:23:49,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316200772] [2023-08-30 15:23:49,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316200772] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:23:49,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:23:49,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 15:23:49,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648614761] [2023-08-30 15:23:49,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:23:49,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 15:23:49,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:23:49,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 15:23:49,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 15:23:49,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 407 out of 1030 [2023-08-30 15:23:49,519 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 79 transitions, 363 flow. Second operand has 5 states, 5 states have (on average 408.8) internal successors, (2044), 5 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:23:49,519 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:23:49,519 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 407 of 1030 [2023-08-30 15:23:49,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:23:53,604 INFO L130 PetriNetUnfolder]: 31403/43285 cut-off events. [2023-08-30 15:23:53,605 INFO L131 PetriNetUnfolder]: For 5198/5330 co-relation queries the response was YES. [2023-08-30 15:23:53,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95263 conditions, 43285 events. 31403/43285 cut-off events. For 5198/5330 co-relation queries the response was YES. Maximal size of possible extension queue 3375. Compared 292501 event pairs, 22748 based on Foata normal form. 132/17277 useless extension candidates. Maximal degree in co-relation 95246. Up to 42128 conditions per place. [2023-08-30 15:23:53,812 INFO L137 encePairwiseOnDemand]: 1016/1030 looper letters, 96 selfloop transitions, 21 changer transitions 0/120 dead transitions. [2023-08-30 15:23:53,812 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 120 transitions, 693 flow [2023-08-30 15:23:53,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 15:23:53,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 15:23:53,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2135 transitions. [2023-08-30 15:23:53,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4145631067961165 [2023-08-30 15:23:53,817 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2135 transitions. [2023-08-30 15:23:53,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2135 transitions. [2023-08-30 15:23:53,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:23:53,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2135 transitions. [2023-08-30 15:23:53,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 427.0) internal successors, (2135), 5 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:23:53,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1030.0) internal successors, (6180), 6 states have internal predecessors, (6180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:23:53,826 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1030.0) internal successors, (6180), 6 states have internal predecessors, (6180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:23:53,827 INFO L175 Difference]: Start difference. First operand has 71 places, 79 transitions, 363 flow. Second operand 5 states and 2135 transitions. [2023-08-30 15:23:53,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 120 transitions, 693 flow [2023-08-30 15:23:53,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 120 transitions, 692 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:23:53,832 INFO L231 Difference]: Finished difference. Result has 76 places, 80 transitions, 427 flow [2023-08-30 15:23:53,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=427, PETRI_PLACES=76, PETRI_TRANSITIONS=80} [2023-08-30 15:23:53,833 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 3 predicate places. [2023-08-30 15:23:53,833 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 80 transitions, 427 flow [2023-08-30 15:23:53,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 408.8) internal successors, (2044), 5 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:23:53,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:23:53,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:23:53,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 15:23:53,834 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-08-30 15:23:53,835 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:23:53,835 INFO L85 PathProgramCache]: Analyzing trace with hash -875630716, now seen corresponding path program 1 times [2023-08-30 15:23:53,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:23:53,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75257840] [2023-08-30 15:23:53,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:23:53,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:23:53,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:23:54,468 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:23:54,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:23:54,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75257840] [2023-08-30 15:23:54,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75257840] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:23:54,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529848921] [2023-08-30 15:23:54,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:23:54,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:23:54,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:23:54,473 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:23:54,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 15:23:54,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:23:54,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 31 conjunts are in the unsatisfiable core [2023-08-30 15:23:54,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:23:54,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:23:54,669 INFO L321 Elim1Store]: treesize reduction 56, result has 37.8 percent of original size [2023-08-30 15:23:54,670 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 39 [2023-08-30 15:23:54,722 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 15:23:54,774 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-30 15:23:54,775 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-08-30 15:23:54,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 15:23:54,855 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 15:23:54,855 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 15:23:54,883 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 15:23:54,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:23:54,906 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 15:23:54,916 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:23:54,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:23:55,120 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:23:55,120 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2023-08-30 15:23:55,132 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:23:55,132 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 123 treesize of output 119 [2023-08-30 15:23:55,141 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 100 [2023-08-30 15:23:55,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 96 [2023-08-30 15:23:55,157 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 46 [2023-08-30 15:23:55,389 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:23:55,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529848921] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:23:55,389 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:23:55,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2023-08-30 15:23:55,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232898228] [2023-08-30 15:23:55,390 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:23:55,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-30 15:23:55,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:23:55,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-30 15:23:55,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=434, Unknown=10, NotChecked=0, Total=552 [2023-08-30 15:23:55,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 362 out of 1030 [2023-08-30 15:23:55,738 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 80 transitions, 427 flow. Second operand has 24 states, 24 states have (on average 363.125) internal successors, (8715), 24 states have internal predecessors, (8715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:23:55,738 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:23:55,738 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 362 of 1030 [2023-08-30 15:23:55,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:24:03,638 INFO L130 PetriNetUnfolder]: 57576/74752 cut-off events. [2023-08-30 15:24:03,639 INFO L131 PetriNetUnfolder]: For 7654/7734 co-relation queries the response was YES. [2023-08-30 15:24:03,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184952 conditions, 74752 events. 57576/74752 cut-off events. For 7654/7734 co-relation queries the response was YES. Maximal size of possible extension queue 5614. Compared 486184 event pairs, 20113 based on Foata normal form. 80/27516 useless extension candidates. Maximal degree in co-relation 184932. Up to 52934 conditions per place. [2023-08-30 15:24:04,062 INFO L137 encePairwiseOnDemand]: 1018/1030 looper letters, 92 selfloop transitions, 22 changer transitions 0/117 dead transitions. [2023-08-30 15:24:04,062 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 117 transitions, 775 flow [2023-08-30 15:24:04,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 15:24:04,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 15:24:04,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2982 transitions. [2023-08-30 15:24:04,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36189320388349516 [2023-08-30 15:24:04,067 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2982 transitions. [2023-08-30 15:24:04,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2982 transitions. [2023-08-30 15:24:04,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:24:04,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2982 transitions. [2023-08-30 15:24:04,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 372.75) internal successors, (2982), 8 states have internal predecessors, (2982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:24:04,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 1030.0) internal successors, (9270), 9 states have internal predecessors, (9270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:24:04,077 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 1030.0) internal successors, (9270), 9 states have internal predecessors, (9270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:24:04,077 INFO L175 Difference]: Start difference. First operand has 76 places, 80 transitions, 427 flow. Second operand 8 states and 2982 transitions. [2023-08-30 15:24:04,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 117 transitions, 775 flow [2023-08-30 15:24:04,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 117 transitions, 740 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:24:04,121 INFO L231 Difference]: Finished difference. Result has 84 places, 92 transitions, 516 flow [2023-08-30 15:24:04,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=516, PETRI_PLACES=84, PETRI_TRANSITIONS=92} [2023-08-30 15:24:04,122 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 11 predicate places. [2023-08-30 15:24:04,122 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 92 transitions, 516 flow [2023-08-30 15:24:04,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 363.125) internal successors, (8715), 24 states have internal predecessors, (8715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:24:04,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:24:04,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:24:04,133 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 15:24:04,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-30 15:24:04,330 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-08-30 15:24:04,330 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:24:04,330 INFO L85 PathProgramCache]: Analyzing trace with hash -875630748, now seen corresponding path program 1 times [2023-08-30 15:24:04,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:24:04,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381488217] [2023-08-30 15:24:04,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:24:04,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:24:04,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:24:04,948 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:24:04,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:24:04,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381488217] [2023-08-30 15:24:04,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381488217] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:24:04,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313967089] [2023-08-30 15:24:04,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:24:04,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:24:04,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:24:04,953 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:24:04,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 15:24:05,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:24:05,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 33 conjunts are in the unsatisfiable core [2023-08-30 15:24:05,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:24:05,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:24:05,118 INFO L321 Elim1Store]: treesize reduction 56, result has 37.8 percent of original size [2023-08-30 15:24:05,119 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 39 [2023-08-30 15:24:05,164 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 15:24:05,202 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-30 15:24:05,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-08-30 15:24:05,244 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 15:24:05,301 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-08-30 15:24:05,301 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 15:24:05,333 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 15:24:05,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:24:05,358 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 15:24:05,371 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:24:05,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:24:05,555 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:24:05,556 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 31 [2023-08-30 15:24:05,567 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:24:05,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1107 treesize of output 1075 [2023-08-30 15:24:05,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 59 [2023-08-30 15:24:05,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 55 [2023-08-30 15:24:05,608 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 54 [2023-08-30 15:24:05,741 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:24:05,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313967089] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:24:05,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:24:05,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2023-08-30 15:24:05,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700148930] [2023-08-30 15:24:05,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:24:05,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-30 15:24:05,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:24:05,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-30 15:24:05,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=434, Unknown=7, NotChecked=0, Total=552 [2023-08-30 15:24:06,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 362 out of 1030 [2023-08-30 15:24:06,875 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 92 transitions, 516 flow. Second operand has 24 states, 24 states have (on average 363.125) internal successors, (8715), 24 states have internal predecessors, (8715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:24:06,875 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:24:06,875 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 362 of 1030 [2023-08-30 15:24:06,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:24:15,694 INFO L130 PetriNetUnfolder]: 61731/80582 cut-off events. [2023-08-30 15:24:15,695 INFO L131 PetriNetUnfolder]: For 29319/29396 co-relation queries the response was YES. [2023-08-30 15:24:15,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207773 conditions, 80582 events. 61731/80582 cut-off events. For 29319/29396 co-relation queries the response was YES. Maximal size of possible extension queue 6156. Compared 538351 event pairs, 22073 based on Foata normal form. 82/32010 useless extension candidates. Maximal degree in co-relation 207750. Up to 58689 conditions per place. [2023-08-30 15:24:16,126 INFO L137 encePairwiseOnDemand]: 1018/1030 looper letters, 92 selfloop transitions, 25 changer transitions 0/120 dead transitions. [2023-08-30 15:24:16,126 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 120 transitions, 839 flow [2023-08-30 15:24:16,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 15:24:16,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 15:24:16,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2981 transitions. [2023-08-30 15:24:16,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3617718446601942 [2023-08-30 15:24:16,131 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2981 transitions. [2023-08-30 15:24:16,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2981 transitions. [2023-08-30 15:24:16,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:24:16,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2981 transitions. [2023-08-30 15:24:16,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 372.625) internal successors, (2981), 8 states have internal predecessors, (2981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:24:16,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 1030.0) internal successors, (9270), 9 states have internal predecessors, (9270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:24:16,140 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 1030.0) internal successors, (9270), 9 states have internal predecessors, (9270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:24:16,140 INFO L175 Difference]: Start difference. First operand has 84 places, 92 transitions, 516 flow. Second operand 8 states and 2981 transitions. [2023-08-30 15:24:16,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 120 transitions, 839 flow [2023-08-30 15:24:16,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 120 transitions, 837 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-30 15:24:16,178 INFO L231 Difference]: Finished difference. Result has 92 places, 96 transitions, 592 flow [2023-08-30 15:24:16,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=508, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=592, PETRI_PLACES=92, PETRI_TRANSITIONS=96} [2023-08-30 15:24:16,178 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 19 predicate places. [2023-08-30 15:24:16,178 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 96 transitions, 592 flow [2023-08-30 15:24:16,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 363.125) internal successors, (8715), 24 states have internal predecessors, (8715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:24:16,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:24:16,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:24:16,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 15:24:16,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:24:16,380 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-08-30 15:24:16,381 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:24:16,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1374171565, now seen corresponding path program 1 times [2023-08-30 15:24:16,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:24:16,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734037671] [2023-08-30 15:24:16,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:24:16,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:24:16,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:24:16,873 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:24:16,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:24:16,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734037671] [2023-08-30 15:24:16,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734037671] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:24:16,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519589621] [2023-08-30 15:24:16,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:24:16,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:24:16,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:24:16,877 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:24:16,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 15:24:17,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:24:17,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 35 conjunts are in the unsatisfiable core [2023-08-30 15:24:17,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:24:17,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:24:17,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:24:17,054 INFO L321 Elim1Store]: treesize reduction 43, result has 41.9 percent of original size [2023-08-30 15:24:17,055 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 36 [2023-08-30 15:24:17,102 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 15:24:17,146 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-30 15:24:17,147 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-08-30 15:24:17,194 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 15:24:17,253 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-08-30 15:24:17,254 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 15:24:17,283 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 15:24:17,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:24:17,317 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 15:24:17,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:24:17,349 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 15:24:17,356 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:24:17,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:24:19,649 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:24:19,650 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 34 [2023-08-30 15:24:19,663 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:24:19,664 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1099 treesize of output 1083 [2023-08-30 15:24:19,704 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 260 treesize of output 252 [2023-08-30 15:24:19,713 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 252 treesize of output 248 [2023-08-30 15:24:19,725 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 122 [2023-08-30 15:24:19,735 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 246 treesize of output 230 [2023-08-30 15:24:19,996 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:24:19,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519589621] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:24:19,996 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:24:19,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2023-08-30 15:24:19,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68521726] [2023-08-30 15:24:19,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:24:19,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-30 15:24:19,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:24:19,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-30 15:24:19,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=550, Unknown=10, NotChecked=0, Total=702 [2023-08-30 15:24:22,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:24:22,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 361 out of 1030 [2023-08-30 15:24:22,622 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 96 transitions, 592 flow. Second operand has 27 states, 27 states have (on average 362.14814814814815) internal successors, (9778), 27 states have internal predecessors, (9778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:24:22,622 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:24:22,622 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 361 of 1030 [2023-08-30 15:24:22,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:24:31,572 INFO L130 PetriNetUnfolder]: 59500/77476 cut-off events. [2023-08-30 15:24:31,572 INFO L131 PetriNetUnfolder]: For 45048/45130 co-relation queries the response was YES. [2023-08-30 15:24:31,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 205319 conditions, 77476 events. 59500/77476 cut-off events. For 45048/45130 co-relation queries the response was YES. Maximal size of possible extension queue 5735. Compared 512673 event pairs, 13043 based on Foata normal form. 127/31077 useless extension candidates. Maximal degree in co-relation 205293. Up to 54727 conditions per place. [2023-08-30 15:24:32,018 INFO L137 encePairwiseOnDemand]: 1019/1030 looper letters, 121 selfloop transitions, 32 changer transitions 0/156 dead transitions. [2023-08-30 15:24:32,018 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 156 transitions, 1156 flow [2023-08-30 15:24:32,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 15:24:32,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 15:24:32,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2999 transitions. [2023-08-30 15:24:32,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36395631067961165 [2023-08-30 15:24:32,022 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2999 transitions. [2023-08-30 15:24:32,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2999 transitions. [2023-08-30 15:24:32,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:24:32,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2999 transitions. [2023-08-30 15:24:32,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 374.875) internal successors, (2999), 8 states have internal predecessors, (2999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:24:32,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 1030.0) internal successors, (9270), 9 states have internal predecessors, (9270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:24:32,031 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 1030.0) internal successors, (9270), 9 states have internal predecessors, (9270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:24:32,031 INFO L175 Difference]: Start difference. First operand has 92 places, 96 transitions, 592 flow. Second operand 8 states and 2999 transitions. [2023-08-30 15:24:32,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 156 transitions, 1156 flow [2023-08-30 15:24:32,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 156 transitions, 1142 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-30 15:24:32,068 INFO L231 Difference]: Finished difference. Result has 98 places, 108 transitions, 778 flow [2023-08-30 15:24:32,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=578, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=778, PETRI_PLACES=98, PETRI_TRANSITIONS=108} [2023-08-30 15:24:32,069 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 25 predicate places. [2023-08-30 15:24:32,069 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 108 transitions, 778 flow [2023-08-30 15:24:32,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 362.14814814814815) internal successors, (9778), 27 states have internal predecessors, (9778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:24:32,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:24:32,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:24:32,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 15:24:32,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:24:32,271 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-08-30 15:24:32,271 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:24:32,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1627700661, now seen corresponding path program 1 times [2023-08-30 15:24:32,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:24:32,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901595585] [2023-08-30 15:24:32,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:24:32,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:24:32,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:24:32,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:24:32,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:24:32,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901595585] [2023-08-30 15:24:32,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901595585] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:24:32,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:24:32,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:24:32,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039840174] [2023-08-30 15:24:32,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:24:32,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:24:32,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:24:32,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:24:32,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:24:32,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 422 out of 1030 [2023-08-30 15:24:32,330 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 108 transitions, 778 flow. Second operand has 3 states, 3 states have (on average 425.3333333333333) internal successors, (1276), 3 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:24:32,330 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:24:32,330 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 422 of 1030 [2023-08-30 15:24:32,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:24:42,746 INFO L130 PetriNetUnfolder]: 70833/96246 cut-off events. [2023-08-30 15:24:42,746 INFO L131 PetriNetUnfolder]: For 113747/114160 co-relation queries the response was YES. [2023-08-30 15:24:43,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 271464 conditions, 96246 events. 70833/96246 cut-off events. For 113747/114160 co-relation queries the response was YES. Maximal size of possible extension queue 8142. Compared 735897 event pairs, 17643 based on Foata normal form. 408/42205 useless extension candidates. Maximal degree in co-relation 271435. Up to 57034 conditions per place. [2023-08-30 15:24:43,314 INFO L137 encePairwiseOnDemand]: 1025/1030 looper letters, 128 selfloop transitions, 3 changer transitions 0/140 dead transitions. [2023-08-30 15:24:43,314 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 140 transitions, 1179 flow [2023-08-30 15:24:43,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:24:43,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:24:43,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1344 transitions. [2023-08-30 15:24:43,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4349514563106796 [2023-08-30 15:24:43,316 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1344 transitions. [2023-08-30 15:24:43,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1344 transitions. [2023-08-30 15:24:43,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:24:43,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1344 transitions. [2023-08-30 15:24:43,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 448.0) internal successors, (1344), 3 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:24:43,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1030.0) internal successors, (4120), 4 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:24:43,320 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1030.0) internal successors, (4120), 4 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:24:43,320 INFO L175 Difference]: Start difference. First operand has 98 places, 108 transitions, 778 flow. Second operand 3 states and 1344 transitions. [2023-08-30 15:24:43,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 140 transitions, 1179 flow [2023-08-30 15:24:43,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 140 transitions, 1159 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-08-30 15:24:43,402 INFO L231 Difference]: Finished difference. Result has 99 places, 110 transitions, 779 flow [2023-08-30 15:24:43,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=758, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=779, PETRI_PLACES=99, PETRI_TRANSITIONS=110} [2023-08-30 15:24:43,403 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 26 predicate places. [2023-08-30 15:24:43,403 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 110 transitions, 779 flow [2023-08-30 15:24:43,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 425.3333333333333) internal successors, (1276), 3 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:24:43,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:24:43,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:24:43,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 15:24:43,404 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-08-30 15:24:43,404 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:24:43,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1627700658, now seen corresponding path program 1 times [2023-08-30 15:24:43,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:24:43,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158712378] [2023-08-30 15:24:43,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:24:43,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:24:43,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:24:43,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:24:43,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:24:43,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158712378] [2023-08-30 15:24:43,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158712378] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:24:43,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:24:43,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:24:43,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342306174] [2023-08-30 15:24:43,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:24:43,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:24:43,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:24:43,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:24:43,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:24:43,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 422 out of 1030 [2023-08-30 15:24:43,520 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 110 transitions, 779 flow. Second operand has 3 states, 3 states have (on average 425.6666666666667) internal successors, (1277), 3 states have internal predecessors, (1277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:24:43,521 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:24:43,521 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 422 of 1030 [2023-08-30 15:24:43,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:24:54,067 INFO L130 PetriNetUnfolder]: 73703/100223 cut-off events. [2023-08-30 15:24:54,067 INFO L131 PetriNetUnfolder]: For 121074/121507 co-relation queries the response was YES. [2023-08-30 15:24:54,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293643 conditions, 100223 events. 73703/100223 cut-off events. For 121074/121507 co-relation queries the response was YES. Maximal size of possible extension queue 8377. Compared 764697 event pairs, 29379 based on Foata normal form. 428/48816 useless extension candidates. Maximal degree in co-relation 293612. Up to 64162 conditions per place. [2023-08-30 15:24:54,902 INFO L137 encePairwiseOnDemand]: 1027/1030 looper letters, 129 selfloop transitions, 2 changer transitions 0/139 dead transitions. [2023-08-30 15:24:54,903 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 139 transitions, 1171 flow [2023-08-30 15:24:54,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:24:54,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:24:54,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1343 transitions. [2023-08-30 15:24:54,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43462783171521036 [2023-08-30 15:24:54,905 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1343 transitions. [2023-08-30 15:24:54,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1343 transitions. [2023-08-30 15:24:54,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:24:54,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1343 transitions. [2023-08-30 15:24:54,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 447.6666666666667) internal successors, (1343), 3 states have internal predecessors, (1343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:24:54,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1030.0) internal successors, (4120), 4 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:24:54,910 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1030.0) internal successors, (4120), 4 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:24:54,910 INFO L175 Difference]: Start difference. First operand has 99 places, 110 transitions, 779 flow. Second operand 3 states and 1343 transitions. [2023-08-30 15:24:54,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 139 transitions, 1171 flow [2023-08-30 15:24:55,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 139 transitions, 1169 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:24:55,263 INFO L231 Difference]: Finished difference. Result has 100 places, 109 transitions, 776 flow [2023-08-30 15:24:55,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=772, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=776, PETRI_PLACES=100, PETRI_TRANSITIONS=109} [2023-08-30 15:24:55,263 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 27 predicate places. [2023-08-30 15:24:55,264 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 109 transitions, 776 flow [2023-08-30 15:24:55,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 425.6666666666667) internal successors, (1277), 3 states have internal predecessors, (1277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:24:55,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:24:55,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:24:55,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 15:24:55,264 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-08-30 15:24:55,265 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:24:55,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1627700617, now seen corresponding path program 1 times [2023-08-30 15:24:55,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:24:55,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229388244] [2023-08-30 15:24:55,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:24:55,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:24:55,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:24:55,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:24:55,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:24:55,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229388244] [2023-08-30 15:24:55,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229388244] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:24:55,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:24:55,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 15:24:55,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123086934] [2023-08-30 15:24:55,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:24:55,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 15:24:55,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:24:55,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 15:24:55,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 15:24:55,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 407 out of 1030 [2023-08-30 15:24:55,457 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 109 transitions, 776 flow. Second operand has 5 states, 5 states have (on average 409.2) internal successors, (2046), 5 states have internal predecessors, (2046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:24:55,457 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:24:55,457 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 407 of 1030 [2023-08-30 15:24:55,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:25:06,657 INFO L130 PetriNetUnfolder]: 76346/103954 cut-off events. [2023-08-30 15:25:06,657 INFO L131 PetriNetUnfolder]: For 122231/122309 co-relation queries the response was YES. [2023-08-30 15:25:07,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 305220 conditions, 103954 events. 76346/103954 cut-off events. For 122231/122309 co-relation queries the response was YES. Maximal size of possible extension queue 9350. Compared 783018 event pairs, 48418 based on Foata normal form. 96/50009 useless extension candidates. Maximal degree in co-relation 305189. Up to 103663 conditions per place. [2023-08-30 15:25:07,391 INFO L137 encePairwiseOnDemand]: 1017/1030 looper letters, 107 selfloop transitions, 21 changer transitions 0/136 dead transitions. [2023-08-30 15:25:07,391 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 136 transitions, 1121 flow [2023-08-30 15:25:07,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 15:25:07,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 15:25:07,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2118 transitions. [2023-08-30 15:25:07,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4112621359223301 [2023-08-30 15:25:07,394 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2118 transitions. [2023-08-30 15:25:07,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2118 transitions. [2023-08-30 15:25:07,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:25:07,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2118 transitions. [2023-08-30 15:25:07,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 423.6) internal successors, (2118), 5 states have internal predecessors, (2118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:25:07,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1030.0) internal successors, (6180), 6 states have internal predecessors, (6180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:25:07,401 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1030.0) internal successors, (6180), 6 states have internal predecessors, (6180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:25:07,401 INFO L175 Difference]: Start difference. First operand has 100 places, 109 transitions, 776 flow. Second operand 5 states and 2118 transitions. [2023-08-30 15:25:07,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 136 transitions, 1121 flow [2023-08-30 15:25:08,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 136 transitions, 1116 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:25:08,155 INFO L231 Difference]: Finished difference. Result has 104 places, 110 transitions, 836 flow [2023-08-30 15:25:08,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=772, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=836, PETRI_PLACES=104, PETRI_TRANSITIONS=110} [2023-08-30 15:25:08,156 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 31 predicate places. [2023-08-30 15:25:08,156 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 110 transitions, 836 flow [2023-08-30 15:25:08,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 409.2) internal successors, (2046), 5 states have internal predecessors, (2046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:25:08,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:25:08,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:25:08,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-30 15:25:08,158 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-08-30 15:25:08,158 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:25:08,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1374745499, now seen corresponding path program 1 times [2023-08-30 15:25:08,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:25:08,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070886741] [2023-08-30 15:25:08,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:25:08,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:25:08,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:25:08,256 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 15:25:08,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:25:08,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070886741] [2023-08-30 15:25:08,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070886741] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:25:08,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417384783] [2023-08-30 15:25:08,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:25:08,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:25:08,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:25:08,258 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:25:08,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 15:25:08,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:25:08,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 15:25:08,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:25:08,449 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 15:25:08,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:25:08,499 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 15:25:08,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1417384783] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:25:08,500 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:25:08,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-08-30 15:25:08,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084064183] [2023-08-30 15:25:08,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:25:08,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 15:25:08,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:25:08,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 15:25:08,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2023-08-30 15:25:08,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 400 out of 1030 [2023-08-30 15:25:08,835 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 110 transitions, 836 flow. Second operand has 14 states, 14 states have (on average 401.57142857142856) internal successors, (5622), 14 states have internal predecessors, (5622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:25:08,835 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:25:08,835 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 400 of 1030 [2023-08-30 15:25:08,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:25:17,811 INFO L130 PetriNetUnfolder]: 58653/79819 cut-off events. [2023-08-30 15:25:17,811 INFO L131 PetriNetUnfolder]: For 124049/124095 co-relation queries the response was YES. [2023-08-30 15:25:18,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245701 conditions, 79819 events. 58653/79819 cut-off events. For 124049/124095 co-relation queries the response was YES. Maximal size of possible extension queue 7259. Compared 585829 event pairs, 29278 based on Foata normal form. 2102/43372 useless extension candidates. Maximal degree in co-relation 245668. Up to 46993 conditions per place. [2023-08-30 15:25:18,494 INFO L137 encePairwiseOnDemand]: 1015/1030 looper letters, 248 selfloop transitions, 34 changer transitions 0/286 dead transitions. [2023-08-30 15:25:18,495 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 286 transitions, 2136 flow [2023-08-30 15:25:18,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 15:25:18,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 15:25:18,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 5029 transitions. [2023-08-30 15:25:18,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40687702265372166 [2023-08-30 15:25:18,501 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 5029 transitions. [2023-08-30 15:25:18,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 5029 transitions. [2023-08-30 15:25:18,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:25:18,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 5029 transitions. [2023-08-30 15:25:18,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 419.0833333333333) internal successors, (5029), 12 states have internal predecessors, (5029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:25:18,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 1030.0) internal successors, (13390), 13 states have internal predecessors, (13390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:25:18,515 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 1030.0) internal successors, (13390), 13 states have internal predecessors, (13390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:25:18,515 INFO L175 Difference]: Start difference. First operand has 104 places, 110 transitions, 836 flow. Second operand 12 states and 5029 transitions. [2023-08-30 15:25:18,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 286 transitions, 2136 flow [2023-08-30 15:25:18,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 286 transitions, 2101 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:25:18,943 INFO L231 Difference]: Finished difference. Result has 116 places, 119 transitions, 1007 flow [2023-08-30 15:25:18,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=801, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1007, PETRI_PLACES=116, PETRI_TRANSITIONS=119} [2023-08-30 15:25:18,944 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 43 predicate places. [2023-08-30 15:25:18,944 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 119 transitions, 1007 flow [2023-08-30 15:25:18,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 401.57142857142856) internal successors, (5622), 14 states have internal predecessors, (5622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:25:18,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:25:18,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:25:18,950 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-30 15:25:19,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-30 15:25:19,146 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-08-30 15:25:19,146 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:25:19,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1374750923, now seen corresponding path program 1 times [2023-08-30 15:25:19,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:25:19,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353165593] [2023-08-30 15:25:19,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:25:19,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:25:19,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:25:19,536 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:25:19,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:25:19,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353165593] [2023-08-30 15:25:19,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353165593] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:25:19,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171814326] [2023-08-30 15:25:19,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:25:19,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:25:19,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:25:19,538 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:25:19,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 15:25:19,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:25:19,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 33 conjunts are in the unsatisfiable core [2023-08-30 15:25:19,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:25:19,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:25:19,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:25:19,697 INFO L321 Elim1Store]: treesize reduction 43, result has 41.9 percent of original size [2023-08-30 15:25:19,698 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 36 [2023-08-30 15:25:19,741 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 15:25:19,791 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-30 15:25:19,791 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-08-30 15:25:19,830 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 15:25:19,861 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 15:25:19,861 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 15:25:19,889 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 15:25:19,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:25:19,928 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 15:25:19,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:25:19,974 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 15:25:19,978 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:25:19,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:25:19,997 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_728 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_728) c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset)) 4294967296)) is different from false [2023-08-30 15:25:22,191 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:25:22,192 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2023-08-30 15:25:22,207 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:25:22,208 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 7745 treesize of output 7617 [2023-08-30 15:25:22,266 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 111 [2023-08-30 15:25:22,277 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 111 treesize of output 107 [2023-08-30 15:25:22,286 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 222 treesize of output 206 [2023-08-30 15:25:22,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 98 [2023-08-30 15:25:22,540 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:25:22,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171814326] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:25:22,541 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:25:22,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 26 [2023-08-30 15:25:22,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61347483] [2023-08-30 15:25:22,541 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:25:22,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-08-30 15:25:22,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:25:22,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-08-30 15:25:22,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=562, Unknown=14, NotChecked=50, Total=756 [2023-08-30 15:25:22,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 361 out of 1030 [2023-08-30 15:25:22,720 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 119 transitions, 1007 flow. Second operand has 28 states, 28 states have (on average 362.14285714285717) internal successors, (10140), 28 states have internal predecessors, (10140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:25:22,720 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:25:22,720 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 361 of 1030 [2023-08-30 15:25:22,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:25:31,585 INFO L130 PetriNetUnfolder]: 55846/75449 cut-off events. [2023-08-30 15:25:31,585 INFO L131 PetriNetUnfolder]: For 135860/135892 co-relation queries the response was YES. [2023-08-30 15:25:31,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247239 conditions, 75449 events. 55846/75449 cut-off events. For 135860/135892 co-relation queries the response was YES. Maximal size of possible extension queue 7061. Compared 550033 event pairs, 24670 based on Foata normal form. 77/39200 useless extension candidates. Maximal degree in co-relation 247203. Up to 56403 conditions per place. [2023-08-30 15:25:32,110 INFO L137 encePairwiseOnDemand]: 1019/1030 looper letters, 130 selfloop transitions, 37 changer transitions 0/171 dead transitions. [2023-08-30 15:25:32,110 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 171 transitions, 1544 flow [2023-08-30 15:25:32,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 15:25:32,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 15:25:32,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2998 transitions. [2023-08-30 15:25:32,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3638349514563107 [2023-08-30 15:25:32,116 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2998 transitions. [2023-08-30 15:25:32,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2998 transitions. [2023-08-30 15:25:32,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:25:32,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2998 transitions. [2023-08-30 15:25:32,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 374.75) internal successors, (2998), 8 states have internal predecessors, (2998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:25:32,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 1030.0) internal successors, (9270), 9 states have internal predecessors, (9270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:25:32,125 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 1030.0) internal successors, (9270), 9 states have internal predecessors, (9270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:25:32,125 INFO L175 Difference]: Start difference. First operand has 116 places, 119 transitions, 1007 flow. Second operand 8 states and 2998 transitions. [2023-08-30 15:25:32,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 171 transitions, 1544 flow [2023-08-30 15:25:32,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 171 transitions, 1503 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-30 15:25:32,422 INFO L231 Difference]: Finished difference. Result has 120 places, 120 transitions, 1047 flow [2023-08-30 15:25:32,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=947, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1047, PETRI_PLACES=120, PETRI_TRANSITIONS=120} [2023-08-30 15:25:32,422 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 47 predicate places. [2023-08-30 15:25:32,423 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 120 transitions, 1047 flow [2023-08-30 15:25:32,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 362.14285714285717) internal successors, (10140), 28 states have internal predecessors, (10140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:25:32,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:25:32,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:25:32,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-30 15:25:32,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:25:32,625 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-08-30 15:25:32,625 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:25:32,625 INFO L85 PathProgramCache]: Analyzing trace with hash 350556505, now seen corresponding path program 1 times [2023-08-30 15:25:32,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:25:32,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708174164] [2023-08-30 15:25:32,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:25:32,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:25:32,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:25:32,679 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 15:25:32,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:25:32,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708174164] [2023-08-30 15:25:32,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708174164] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:25:32,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:25:32,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:25:32,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100661692] [2023-08-30 15:25:32,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:25:32,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:25:32,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:25:32,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:25:32,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:25:32,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 422 out of 1030 [2023-08-30 15:25:32,696 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 120 transitions, 1047 flow. Second operand has 3 states, 3 states have (on average 426.0) internal successors, (1278), 3 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:25:32,697 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:25:32,697 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 422 of 1030 [2023-08-30 15:25:32,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand