./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-bad-commit-2.wvr-bad.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/popl20-bad-commit-2.wvr-bad.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 5bf746ef76f8c8352051d8eb5f02d7a475e14d238622e290fcb51135a3348206 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 11:27:10,775 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 11:27:10,777 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 11:27:10,811 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 11:27:10,812 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 11:27:10,814 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 11:27:10,816 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 11:27:10,819 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 11:27:10,820 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 11:27:10,825 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 11:27:10,825 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 11:27:10,828 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 11:27:10,828 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 11:27:10,830 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 11:27:10,831 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 11:27:10,836 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 11:27:10,837 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 11:27:10,839 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 11:27:10,840 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 11:27:10,845 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 11:27:10,853 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 11:27:10,854 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 11:27:10,855 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 11:27:10,856 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 11:27:10,862 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 11:27:10,862 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 11:27:10,863 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 11:27:10,865 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 11:27:10,865 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 11:27:10,866 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 11:27:10,866 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 11:27:10,868 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 11:27:10,869 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 11:27:10,870 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 11:27:10,871 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 11:27:10,871 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 11:27:10,871 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 11:27:10,872 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 11:27:10,872 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 11:27:10,872 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 11:27:10,873 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 11:27:10,875 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 11:27:10,907 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 11:27:10,908 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 11:27:10,909 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 11:27:10,909 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 11:27:10,910 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 11:27:10,910 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 11:27:10,911 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 11:27:10,911 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 11:27:10,911 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 11:27:10,911 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 11:27:10,912 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 11:27:10,912 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 11:27:10,912 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 11:27:10,913 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 11:27:10,913 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 11:27:10,913 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 11:27:10,913 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 11:27:10,913 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 11:27:10,913 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 11:27:10,914 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 11:27:10,914 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 11:27:10,914 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 11:27:10,914 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 11:27:10,914 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 11:27:10,915 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 11:27:10,915 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 11:27:10,915 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:27:10,915 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 11:27:10,915 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 11:27:10,916 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 11:27:10,916 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 11:27:10,916 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 11:27:10,916 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 11:27:10,917 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 11:27:10,917 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 11:27:10,917 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 11:27:10,917 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 11:27:10,917 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5bf746ef76f8c8352051d8eb5f02d7a475e14d238622e290fcb51135a3348206 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 11:27:11,185 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 11:27:11,203 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 11:27:11,205 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 11:27:11,206 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 11:27:11,207 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 11:27:11,208 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-commit-2.wvr-bad.c [2023-08-30 11:27:12,458 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 11:27:12,660 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 11:27:12,661 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-commit-2.wvr-bad.c [2023-08-30 11:27:12,667 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98b6da718/82a888b9ea964445b056a1d749294cbf/FLAG5c26d1415 [2023-08-30 11:27:12,681 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98b6da718/82a888b9ea964445b056a1d749294cbf [2023-08-30 11:27:12,683 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 11:27:12,685 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 11:27:12,687 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 11:27:12,688 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 11:27:12,690 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 11:27:12,691 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:27:12" (1/1) ... [2023-08-30 11:27:12,692 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22bd1030 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:27:12, skipping insertion in model container [2023-08-30 11:27:12,693 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:27:12" (1/1) ... [2023-08-30 11:27:12,698 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 11:27:12,719 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 11:27:12,885 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-commit-2.wvr-bad.c[6687,6700] [2023-08-30 11:27:12,903 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:27:12,916 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 11:27:12,964 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-commit-2.wvr-bad.c[6687,6700] [2023-08-30 11:27:12,980 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:27:12,990 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 11:27:12,991 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 11:27:12,997 INFO L208 MainTranslator]: Completed translation [2023-08-30 11:27:12,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:27:12 WrapperNode [2023-08-30 11:27:12,997 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 11:27:12,999 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 11:27:12,999 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 11:27:12,999 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 11:27:13,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:27:12" (1/1) ... [2023-08-30 11:27:13,032 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:27:12" (1/1) ... [2023-08-30 11:27:13,077 INFO L138 Inliner]: procedures = 26, calls = 93, calls flagged for inlining = 27, calls inlined = 33, statements flattened = 510 [2023-08-30 11:27:13,083 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 11:27:13,084 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 11:27:13,085 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 11:27:13,085 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 11:27:13,092 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:27:12" (1/1) ... [2023-08-30 11:27:13,093 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:27:12" (1/1) ... [2023-08-30 11:27:13,104 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:27:12" (1/1) ... [2023-08-30 11:27:13,109 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:27:12" (1/1) ... [2023-08-30 11:27:13,119 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:27:12" (1/1) ... [2023-08-30 11:27:13,136 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:27:12" (1/1) ... [2023-08-30 11:27:13,150 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:27:12" (1/1) ... [2023-08-30 11:27:13,156 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:27:12" (1/1) ... [2023-08-30 11:27:13,161 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 11:27:13,163 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 11:27:13,164 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 11:27:13,164 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 11:27:13,165 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:27:12" (1/1) ... [2023-08-30 11:27:13,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:27:13,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:27:13,193 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 11:27:13,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 11:27:13,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 11:27:13,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 11:27:13,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 11:27:13,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 11:27:13,236 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 11:27:13,236 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 11:27:13,236 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 11:27:13,236 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 11:27:13,236 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 11:27:13,236 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 11:27:13,237 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-30 11:27:13,237 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-30 11:27:13,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 11:27:13,237 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 11:27:13,237 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 11:27:13,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 11:27:13,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 11:27:13,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 11:27:13,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 11:27:13,240 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 11:27:13,346 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 11:27:13,348 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 11:27:13,978 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 11:27:14,224 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 11:27:14,225 INFO L302 CfgBuilder]: Removed 8 assume(true) statements. [2023-08-30 11:27:14,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:27:14 BoogieIcfgContainer [2023-08-30 11:27:14,228 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 11:27:14,230 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 11:27:14,230 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 11:27:14,233 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 11:27:14,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 11:27:12" (1/3) ... [2023-08-30 11:27:14,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76f9114e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:27:14, skipping insertion in model container [2023-08-30 11:27:14,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:27:12" (2/3) ... [2023-08-30 11:27:14,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76f9114e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:27:14, skipping insertion in model container [2023-08-30 11:27:14,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:27:14" (3/3) ... [2023-08-30 11:27:14,236 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-commit-2.wvr-bad.c [2023-08-30 11:27:14,243 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 11:27:14,251 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 11:27:14,251 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2023-08-30 11:27:14,251 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 11:27:14,369 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-30 11:27:14,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 363 places, 387 transitions, 806 flow [2023-08-30 11:27:14,558 INFO L130 PetriNetUnfolder]: 37/383 cut-off events. [2023-08-30 11:27:14,559 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 11:27:14,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 400 conditions, 383 events. 37/383 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 416 event pairs, 0 based on Foata normal form. 0/314 useless extension candidates. Maximal degree in co-relation 338. Up to 8 conditions per place. [2023-08-30 11:27:14,569 INFO L82 GeneralOperation]: Start removeDead. Operand has 363 places, 387 transitions, 806 flow [2023-08-30 11:27:14,577 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 340 places, 363 transitions, 747 flow [2023-08-30 11:27:14,581 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 11:27:14,600 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 340 places, 363 transitions, 747 flow [2023-08-30 11:27:14,606 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 340 places, 363 transitions, 747 flow [2023-08-30 11:27:14,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 340 places, 363 transitions, 747 flow [2023-08-30 11:27:14,686 INFO L130 PetriNetUnfolder]: 36/363 cut-off events. [2023-08-30 11:27:14,687 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 11:27:14,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 379 conditions, 363 events. 36/363 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 413 event pairs, 0 based on Foata normal form. 0/295 useless extension candidates. Maximal degree in co-relation 338. Up to 8 conditions per place. [2023-08-30 11:27:14,695 INFO L119 LiptonReduction]: Number of co-enabled transitions 9264 [2023-08-30 11:27:29,662 INFO L134 LiptonReduction]: Checked pairs total: 11123 [2023-08-30 11:27:29,663 INFO L136 LiptonReduction]: Total number of compositions: 430 [2023-08-30 11:27:29,676 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 11:27:29,681 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;@5c8b9a09, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 11:27:29,682 INFO L358 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2023-08-30 11:27:29,685 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 11:27:29,685 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 11:27:29,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:27:29,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 11:27:29,686 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-08-30 11:27:29,690 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:27:29,691 INFO L85 PathProgramCache]: Analyzing trace with hash 63894, now seen corresponding path program 1 times [2023-08-30 11:27:29,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:27:29,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905354517] [2023-08-30 11:27:29,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:27:29,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:27:29,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:27:30,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:27:30,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:27:30,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905354517] [2023-08-30 11:27:30,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905354517] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:27:30,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:27:30,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:27:30,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091936147] [2023-08-30 11:27:30,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:27:30,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:27:30,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:27:30,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:27:30,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:27:30,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 817 [2023-08-30 11:27:30,150 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 63 transitions, 147 flow. Second operand has 3 states, 3 states have (on average 313.6666666666667) internal successors, (941), 3 states have internal predecessors, (941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:27:30,150 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:27:30,150 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 817 [2023-08-30 11:27:30,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:27:32,754 INFO L130 PetriNetUnfolder]: 9913/12987 cut-off events. [2023-08-30 11:27:32,755 INFO L131 PetriNetUnfolder]: For 230/230 co-relation queries the response was YES. [2023-08-30 11:27:32,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26824 conditions, 12987 events. 9913/12987 cut-off events. For 230/230 co-relation queries the response was YES. Maximal size of possible extension queue 864. Compared 58503 event pairs, 7514 based on Foata normal form. 0/4435 useless extension candidates. Maximal degree in co-relation 12048. Up to 6499 conditions per place. [2023-08-30 11:27:32,830 INFO L137 encePairwiseOnDemand]: 789/817 looper letters, 85 selfloop transitions, 8 changer transitions 0/93 dead transitions. [2023-08-30 11:27:32,831 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 93 transitions, 414 flow [2023-08-30 11:27:32,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:27:32,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:27:32,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1064 transitions. [2023-08-30 11:27:32,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43410852713178294 [2023-08-30 11:27:32,848 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1064 transitions. [2023-08-30 11:27:32,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1064 transitions. [2023-08-30 11:27:32,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:27:32,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1064 transitions. [2023-08-30 11:27:32,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 354.6666666666667) internal successors, (1064), 3 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:27:32,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 817.0) internal successors, (3268), 4 states have internal predecessors, (3268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:27:32,868 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 817.0) internal successors, (3268), 4 states have internal predecessors, (3268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:27:32,870 INFO L175 Difference]: Start difference. First operand has 68 places, 63 transitions, 147 flow. Second operand 3 states and 1064 transitions. [2023-08-30 11:27:32,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 93 transitions, 414 flow [2023-08-30 11:27:32,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 93 transitions, 388 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-08-30 11:27:32,962 INFO L231 Difference]: Finished difference. Result has 53 places, 58 transitions, 186 flow [2023-08-30 11:27:32,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=186, PETRI_PLACES=53, PETRI_TRANSITIONS=58} [2023-08-30 11:27:32,967 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -15 predicate places. [2023-08-30 11:27:32,968 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 58 transitions, 186 flow [2023-08-30 11:27:32,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 313.6666666666667) internal successors, (941), 3 states have internal predecessors, (941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:27:32,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:27:32,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 11:27:32,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 11:27:32,969 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-08-30 11:27:32,970 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:27:32,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1983383, now seen corresponding path program 1 times [2023-08-30 11:27:32,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:27:32,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228398037] [2023-08-30 11:27:32,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:27:32,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:27:32,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:27:33,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:27:33,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:27:33,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228398037] [2023-08-30 11:27:33,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228398037] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:27:33,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:27:33,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:27:33,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434413803] [2023-08-30 11:27:33,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:27:33,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:27:33,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:27:33,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:27:33,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:27:33,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 817 [2023-08-30 11:27:33,075 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 58 transitions, 186 flow. Second operand has 3 states, 3 states have (on average 314.0) internal successors, (942), 3 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:27:33,075 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:27:33,075 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 817 [2023-08-30 11:27:33,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:27:35,177 INFO L130 PetriNetUnfolder]: 9913/12983 cut-off events. [2023-08-30 11:27:35,178 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 11:27:35,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26591 conditions, 12983 events. 9913/12983 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 864. Compared 58452 event pairs, 7514 based on Foata normal form. 0/4443 useless extension candidates. Maximal degree in co-relation 13270. Up to 12983 conditions per place. [2023-08-30 11:27:35,234 INFO L137 encePairwiseOnDemand]: 812/817 looper letters, 53 selfloop transitions, 1 changer transitions 0/54 dead transitions. [2023-08-30 11:27:35,234 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 54 transitions, 278 flow [2023-08-30 11:27:35,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:27:35,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:27:35,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 990 transitions. [2023-08-30 11:27:35,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4039167686658507 [2023-08-30 11:27:35,238 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 990 transitions. [2023-08-30 11:27:35,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 990 transitions. [2023-08-30 11:27:35,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:27:35,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 990 transitions. [2023-08-30 11:27:35,241 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 330.0) internal successors, (990), 3 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:27:35,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 817.0) internal successors, (3268), 4 states have internal predecessors, (3268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:27:35,247 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 817.0) internal successors, (3268), 4 states have internal predecessors, (3268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:27:35,247 INFO L175 Difference]: Start difference. First operand has 53 places, 58 transitions, 186 flow. Second operand 3 states and 990 transitions. [2023-08-30 11:27:35,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 54 transitions, 278 flow [2023-08-30 11:27:35,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 54 transitions, 262 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:27:35,250 INFO L231 Difference]: Finished difference. Result has 49 places, 54 transitions, 156 flow [2023-08-30 11:27:35,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=49, PETRI_TRANSITIONS=54} [2023-08-30 11:27:35,251 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -19 predicate places. [2023-08-30 11:27:35,251 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 54 transitions, 156 flow [2023-08-30 11:27:35,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 314.0) internal successors, (942), 3 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:27:35,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:27:35,252 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 11:27:35,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 11:27:35,252 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-08-30 11:27:35,253 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:27:35,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1983409, now seen corresponding path program 1 times [2023-08-30 11:27:35,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:27:35,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712802776] [2023-08-30 11:27:35,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:27:35,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:27:35,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:27:35,354 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:27:35,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:27:35,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712802776] [2023-08-30 11:27:35,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712802776] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:27:35,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592153368] [2023-08-30 11:27:35,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:27:35,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:27:35,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:27:35,365 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:27:35,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 11:27:35,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:27:35,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:27:35,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:27:35,514 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:27:35,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:27:35,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:27:35,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592153368] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:27:35,529 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:27:35,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 11:27:35,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000338452] [2023-08-30 11:27:35,530 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:27:35,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 11:27:35,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:27:35,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 11:27:35,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 11:27:35,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 817 [2023-08-30 11:27:35,630 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 54 transitions, 156 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:27:35,630 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:27:35,630 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 817 [2023-08-30 11:27:35,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:27:39,941 INFO L130 PetriNetUnfolder]: 24781/32450 cut-off events. [2023-08-30 11:27:39,942 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 11:27:39,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66430 conditions, 32450 events. 24781/32450 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1565. Compared 163338 event pairs, 18785 based on Foata normal form. 0/11091 useless extension candidates. Maximal degree in co-relation 66422. Up to 6498 conditions per place. [2023-08-30 11:27:40,129 INFO L137 encePairwiseOnDemand]: 805/817 looper letters, 186 selfloop transitions, 29 changer transitions 0/215 dead transitions. [2023-08-30 11:27:40,130 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 215 transitions, 982 flow [2023-08-30 11:27:40,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 11:27:40,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 11:27:40,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2105 transitions. [2023-08-30 11:27:40,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4294165646674827 [2023-08-30 11:27:40,137 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2105 transitions. [2023-08-30 11:27:40,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2105 transitions. [2023-08-30 11:27:40,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:27:40,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2105 transitions. [2023-08-30 11:27:40,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 350.8333333333333) internal successors, (2105), 6 states have internal predecessors, (2105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:27:40,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 817.0) internal successors, (5719), 7 states have internal predecessors, (5719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:27:40,158 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 817.0) internal successors, (5719), 7 states have internal predecessors, (5719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:27:40,158 INFO L175 Difference]: Start difference. First operand has 49 places, 54 transitions, 156 flow. Second operand 6 states and 2105 transitions. [2023-08-30 11:27:40,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 215 transitions, 982 flow [2023-08-30 11:27:40,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 215 transitions, 981 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:27:40,164 INFO L231 Difference]: Finished difference. Result has 56 places, 75 transitions, 362 flow [2023-08-30 11:27:40,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=362, PETRI_PLACES=56, PETRI_TRANSITIONS=75} [2023-08-30 11:27:40,166 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -12 predicate places. [2023-08-30 11:27:40,166 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 75 transitions, 362 flow [2023-08-30 11:27:40,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:27:40,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:27:40,168 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 11:27:40,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 11:27:40,374 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 11:27:40,374 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-08-30 11:27:40,374 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:27:40,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1039928848, now seen corresponding path program 2 times [2023-08-30 11:27:40,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:27:40,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936267687] [2023-08-30 11:27:40,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:27:40,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:27:40,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:27:40,504 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:27:40,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:27:40,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936267687] [2023-08-30 11:27:40,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936267687] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:27:40,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587457118] [2023-08-30 11:27:40,510 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 11:27:40,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:27:40,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:27:40,511 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:27:40,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 11:27:40,618 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 11:27:40,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:27:40,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 11:27:40,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:27:40,641 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 11:27:40,642 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:27:40,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587457118] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:27:40,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:27:40,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 11:27:40,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347611017] [2023-08-30 11:27:40,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:27:40,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:27:40,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:27:40,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:27:40,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 11:27:40,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 317 out of 817 [2023-08-30 11:27:40,689 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 75 transitions, 362 flow. Second operand has 3 states, 3 states have (on average 318.0) internal successors, (954), 3 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:27:40,689 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:27:40,689 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 317 of 817 [2023-08-30 11:27:40,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:27:44,431 INFO L130 PetriNetUnfolder]: 24781/32446 cut-off events. [2023-08-30 11:27:44,432 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-30 11:27:44,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66475 conditions, 32446 events. 24781/32446 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 1565. Compared 163102 event pairs, 18785 based on Foata normal form. 4/11104 useless extension candidates. Maximal degree in co-relation 66463. Up to 32446 conditions per place. [2023-08-30 11:27:44,585 INFO L137 encePairwiseOnDemand]: 812/817 looper letters, 70 selfloop transitions, 1 changer transitions 0/71 dead transitions. [2023-08-30 11:27:44,585 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 71 transitions, 464 flow [2023-08-30 11:27:44,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:27:44,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:27:44,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 998 transitions. [2023-08-30 11:27:44,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40718074255405956 [2023-08-30 11:27:44,588 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 998 transitions. [2023-08-30 11:27:44,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 998 transitions. [2023-08-30 11:27:44,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:27:44,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 998 transitions. [2023-08-30 11:27:44,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 332.6666666666667) internal successors, (998), 3 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:27:44,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 817.0) internal successors, (3268), 4 states have internal predecessors, (3268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:27:44,597 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 817.0) internal successors, (3268), 4 states have internal predecessors, (3268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:27:44,597 INFO L175 Difference]: Start difference. First operand has 56 places, 75 transitions, 362 flow. Second operand 3 states and 998 transitions. [2023-08-30 11:27:44,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 71 transitions, 464 flow [2023-08-30 11:27:44,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 71 transitions, 365 flow, removed 16 selfloop flow, removed 5 redundant places. [2023-08-30 11:27:44,600 INFO L231 Difference]: Finished difference. Result has 49 places, 71 transitions, 225 flow [2023-08-30 11:27:44,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=225, PETRI_PLACES=49, PETRI_TRANSITIONS=71} [2023-08-30 11:27:44,601 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -19 predicate places. [2023-08-30 11:27:44,601 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 71 transitions, 225 flow [2023-08-30 11:27:44,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 318.0) internal successors, (954), 3 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:27:44,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:27:44,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:27:44,615 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 11:27:44,815 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 11:27:44,816 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-08-30 11:27:44,816 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:27:44,816 INFO L85 PathProgramCache]: Analyzing trace with hash -866525972, now seen corresponding path program 1 times [2023-08-30 11:27:44,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:27:44,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793273010] [2023-08-30 11:27:44,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:27:44,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:27:44,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:27:44,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:27:44,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:27:44,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793273010] [2023-08-30 11:27:44,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793273010] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:27:44,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:27:44,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:27:44,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410686232] [2023-08-30 11:27:44,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:27:44,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:27:44,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:27:44,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:27:44,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:27:44,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 317 out of 817 [2023-08-30 11:27:44,914 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 71 transitions, 225 flow. Second operand has 3 states, 3 states have (on average 319.3333333333333) internal successors, (958), 3 states have internal predecessors, (958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:27:44,914 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:27:44,914 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 317 of 817 [2023-08-30 11:27:44,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:27:50,669 INFO L130 PetriNetUnfolder]: 33531/43736 cut-off events. [2023-08-30 11:27:50,670 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 11:27:50,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89369 conditions, 43736 events. 33531/43736 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1937. Compared 238275 event pairs, 7585 based on Foata normal form. 0/15551 useless extension candidates. Maximal degree in co-relation 89360. Up to 29591 conditions per place. [2023-08-30 11:27:50,850 INFO L137 encePairwiseOnDemand]: 809/817 looper letters, 96 selfloop transitions, 3 changer transitions 0/99 dead transitions. [2023-08-30 11:27:50,850 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 99 transitions, 486 flow [2023-08-30 11:27:50,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:27:50,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:27:50,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1027 transitions. [2023-08-30 11:27:50,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4190126478988168 [2023-08-30 11:27:50,854 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1027 transitions. [2023-08-30 11:27:50,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1027 transitions. [2023-08-30 11:27:50,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:27:50,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1027 transitions. [2023-08-30 11:27:50,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 342.3333333333333) internal successors, (1027), 3 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:27:50,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 817.0) internal successors, (3268), 4 states have internal predecessors, (3268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:27:50,862 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 817.0) internal successors, (3268), 4 states have internal predecessors, (3268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:27:50,862 INFO L175 Difference]: Start difference. First operand has 49 places, 71 transitions, 225 flow. Second operand 3 states and 1027 transitions. [2023-08-30 11:27:50,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 99 transitions, 486 flow [2023-08-30 11:27:50,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 99 transitions, 485 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:27:50,865 INFO L231 Difference]: Finished difference. Result has 52 places, 73 transitions, 254 flow [2023-08-30 11:27:50,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=254, PETRI_PLACES=52, PETRI_TRANSITIONS=73} [2023-08-30 11:27:50,866 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -16 predicate places. [2023-08-30 11:27:50,866 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 73 transitions, 254 flow [2023-08-30 11:27:50,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 319.3333333333333) internal successors, (958), 3 states have internal predecessors, (958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:27:50,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:27:50,867 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:27:50,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 11:27:50,867 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-08-30 11:27:50,868 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:27:50,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1092496552, now seen corresponding path program 1 times [2023-08-30 11:27:50,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:27:50,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240972921] [2023-08-30 11:27:50,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:27:50,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:27:50,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:27:51,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:27:51,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:27:51,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240972921] [2023-08-30 11:27:51,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240972921] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:27:51,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097507061] [2023-08-30 11:27:51,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:27:51,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:27:51,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:27:51,194 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:27:51,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 11:27:51,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:27:51,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:27:51,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:27:51,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:27:51,402 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:27:51,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097507061] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:27:51,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:27:51,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2023-08-30 11:27:51,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171949804] [2023-08-30 11:27:51,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:27:51,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:27:51,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:27:51,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:27:51,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 11:27:51,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 316 out of 817 [2023-08-30 11:27:51,425 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 73 transitions, 254 flow. Second operand has 3 states, 3 states have (on average 318.6666666666667) internal successors, (956), 3 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:27:51,426 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:27:51,426 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 316 of 817 [2023-08-30 11:27:51,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:27:57,596 INFO L130 PetriNetUnfolder]: 40471/53116 cut-off events. [2023-08-30 11:27:57,596 INFO L131 PetriNetUnfolder]: For 9585/9585 co-relation queries the response was YES. [2023-08-30 11:27:57,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117692 conditions, 53116 events. 40471/53116 cut-off events. For 9585/9585 co-relation queries the response was YES. Maximal size of possible extension queue 2248. Compared 300538 event pairs, 10865 based on Foata normal form. 1700/24951 useless extension candidates. Maximal degree in co-relation 117680. Up to 45191 conditions per place. [2023-08-30 11:27:57,845 INFO L137 encePairwiseOnDemand]: 811/817 looper letters, 93 selfloop transitions, 4 changer transitions 0/97 dead transitions. [2023-08-30 11:27:57,845 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 97 transitions, 502 flow [2023-08-30 11:27:57,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:27:57,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:27:57,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1017 transitions. [2023-08-30 11:27:57,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4149326805385557 [2023-08-30 11:27:57,849 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1017 transitions. [2023-08-30 11:27:57,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1017 transitions. [2023-08-30 11:27:57,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:27:57,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1017 transitions. [2023-08-30 11:27:57,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 339.0) internal successors, (1017), 3 states have internal predecessors, (1017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:27:57,855 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 817.0) internal successors, (3268), 4 states have internal predecessors, (3268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:27:57,856 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 817.0) internal successors, (3268), 4 states have internal predecessors, (3268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:27:57,856 INFO L175 Difference]: Start difference. First operand has 52 places, 73 transitions, 254 flow. Second operand 3 states and 1017 transitions. [2023-08-30 11:27:57,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 97 transitions, 502 flow [2023-08-30 11:27:57,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 97 transitions, 496 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:27:57,900 INFO L231 Difference]: Finished difference. Result has 53 places, 76 transitions, 276 flow [2023-08-30 11:27:57,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=50, 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=276, PETRI_PLACES=53, PETRI_TRANSITIONS=76} [2023-08-30 11:27:57,903 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -15 predicate places. [2023-08-30 11:27:57,903 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 76 transitions, 276 flow [2023-08-30 11:27:57,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 318.6666666666667) internal successors, (956), 3 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:27:57,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:27:57,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:27:57,912 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 11:27:58,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:27:58,110 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-08-30 11:27:58,110 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:27:58,110 INFO L85 PathProgramCache]: Analyzing trace with hash 492203569, now seen corresponding path program 1 times [2023-08-30 11:27:58,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:27:58,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790281253] [2023-08-30 11:27:58,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:27:58,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:27:58,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:27:58,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:27:58,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:27:58,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790281253] [2023-08-30 11:27:58,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790281253] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:27:58,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:27:58,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:27:58,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972874575] [2023-08-30 11:27:58,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:27:58,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:27:58,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:27:58,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:27:58,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:27:58,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 321 out of 817 [2023-08-30 11:27:58,264 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 76 transitions, 276 flow. Second operand has 3 states, 3 states have (on average 324.0) internal successors, (972), 3 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:27:58,265 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:27:58,265 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 321 of 817 [2023-08-30 11:27:58,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:28:04,839 INFO L130 PetriNetUnfolder]: 38181/50296 cut-off events. [2023-08-30 11:28:04,839 INFO L131 PetriNetUnfolder]: For 9715/9715 co-relation queries the response was YES. [2023-08-30 11:28:04,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121128 conditions, 50296 events. 38181/50296 cut-off events. For 9715/9715 co-relation queries the response was YES. Maximal size of possible extension queue 2146. Compared 284145 event pairs, 11685 based on Foata normal form. 0/28961 useless extension candidates. Maximal degree in co-relation 121115. Up to 32871 conditions per place. [2023-08-30 11:28:05,052 INFO L137 encePairwiseOnDemand]: 814/817 looper letters, 97 selfloop transitions, 2 changer transitions 0/99 dead transitions. [2023-08-30 11:28:05,052 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 99 transitions, 532 flow [2023-08-30 11:28:05,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:28:05,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:28:05,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1032 transitions. [2023-08-30 11:28:05,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42105263157894735 [2023-08-30 11:28:05,055 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1032 transitions. [2023-08-30 11:28:05,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1032 transitions. [2023-08-30 11:28:05,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:28:05,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1032 transitions. [2023-08-30 11:28:05,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 344.0) internal successors, (1032), 3 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:28:05,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 817.0) internal successors, (3268), 4 states have internal predecessors, (3268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:28:05,061 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 817.0) internal successors, (3268), 4 states have internal predecessors, (3268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:28:05,061 INFO L175 Difference]: Start difference. First operand has 53 places, 76 transitions, 276 flow. Second operand 3 states and 1032 transitions. [2023-08-30 11:28:05,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 99 transitions, 532 flow [2023-08-30 11:28:05,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 99 transitions, 528 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:28:05,064 INFO L231 Difference]: Finished difference. Result has 55 places, 76 transitions, 280 flow [2023-08-30 11:28:05,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=280, PETRI_PLACES=55, PETRI_TRANSITIONS=76} [2023-08-30 11:28:05,065 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -13 predicate places. [2023-08-30 11:28:05,065 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 76 transitions, 280 flow [2023-08-30 11:28:05,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 324.0) internal successors, (972), 3 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:28:05,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:28:05,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:28:05,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 11:28:05,066 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-08-30 11:28:05,067 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:28:05,067 INFO L85 PathProgramCache]: Analyzing trace with hash 492203573, now seen corresponding path program 1 times [2023-08-30 11:28:05,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:28:05,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035591294] [2023-08-30 11:28:05,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:28:05,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:28:05,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:28:05,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:28:05,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:28:05,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035591294] [2023-08-30 11:28:05,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035591294] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:28:05,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:28:05,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:28:05,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395980476] [2023-08-30 11:28:05,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:28:05,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:28:05,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:28:05,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:28:05,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:28:05,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 321 out of 817 [2023-08-30 11:28:05,136 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 76 transitions, 280 flow. Second operand has 3 states, 3 states have (on average 324.0) internal successors, (972), 3 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:28:05,136 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:28:05,136 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 321 of 817 [2023-08-30 11:28:05,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:28:14,979 INFO L130 PetriNetUnfolder]: 55871/72846 cut-off events. [2023-08-30 11:28:14,979 INFO L131 PetriNetUnfolder]: For 23440/23440 co-relation queries the response was YES. [2023-08-30 11:28:15,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180370 conditions, 72846 events. 55871/72846 cut-off events. For 23440/23440 co-relation queries the response was YES. Maximal size of possible extension queue 3102. Compared 414580 event pairs, 22585 based on Foata normal form. 0/47721 useless extension candidates. Maximal degree in co-relation 180355. Up to 38091 conditions per place. [2023-08-30 11:28:15,310 INFO L137 encePairwiseOnDemand]: 813/817 looper letters, 104 selfloop transitions, 4 changer transitions 0/108 dead transitions. [2023-08-30 11:28:15,310 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 108 transitions, 599 flow [2023-08-30 11:28:15,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:28:15,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:28:15,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1037 transitions. [2023-08-30 11:28:15,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42309261525907793 [2023-08-30 11:28:15,313 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1037 transitions. [2023-08-30 11:28:15,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1037 transitions. [2023-08-30 11:28:15,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:28:15,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1037 transitions. [2023-08-30 11:28:15,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 345.6666666666667) internal successors, (1037), 3 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:28:15,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 817.0) internal successors, (3268), 4 states have internal predecessors, (3268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:28:15,319 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 817.0) internal successors, (3268), 4 states have internal predecessors, (3268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:28:15,319 INFO L175 Difference]: Start difference. First operand has 55 places, 76 transitions, 280 flow. Second operand 3 states and 1037 transitions. [2023-08-30 11:28:15,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 108 transitions, 599 flow [2023-08-30 11:28:15,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 108 transitions, 596 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:28:15,323 INFO L231 Difference]: Finished difference. Result has 58 places, 78 transitions, 308 flow [2023-08-30 11:28:15,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=308, PETRI_PLACES=58, PETRI_TRANSITIONS=78} [2023-08-30 11:28:15,324 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -10 predicate places. [2023-08-30 11:28:15,324 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 78 transitions, 308 flow [2023-08-30 11:28:15,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 324.0) internal successors, (972), 3 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:28:15,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:28:15,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:28:15,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 11:28:15,325 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-08-30 11:28:15,326 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:28:15,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1921556636, now seen corresponding path program 1 times [2023-08-30 11:28:15,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:28:15,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472675493] [2023-08-30 11:28:15,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:28:15,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:28:15,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:28:15,437 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:28:15,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:28:15,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472675493] [2023-08-30 11:28:15,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472675493] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:28:15,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:28:15,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:28:15,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353581209] [2023-08-30 11:28:15,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:28:15,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:28:15,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:28:15,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:28:15,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 11:28:15,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 817 [2023-08-30 11:28:15,508 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 78 transitions, 308 flow. Second operand has 4 states, 4 states have (on average 309.5) internal successors, (1238), 4 states have internal predecessors, (1238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:28:15,508 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:28:15,508 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 817 [2023-08-30 11:28:15,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:28:30,102 INFO L130 PetriNetUnfolder]: 75791/99066 cut-off events. [2023-08-30 11:28:30,102 INFO L131 PetriNetUnfolder]: For 88405/88405 co-relation queries the response was YES. [2023-08-30 11:28:30,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 267458 conditions, 99066 events. 75791/99066 cut-off events. For 88405/88405 co-relation queries the response was YES. Maximal size of possible extension queue 3947. Compared 564381 event pairs, 53635 based on Foata normal form. 1590/72661 useless extension candidates. Maximal degree in co-relation 267440. Up to 72845 conditions per place. [2023-08-30 11:28:30,569 INFO L137 encePairwiseOnDemand]: 803/817 looper letters, 159 selfloop transitions, 14 changer transitions 0/173 dead transitions. [2023-08-30 11:28:30,569 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 173 transitions, 1006 flow [2023-08-30 11:28:30,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 11:28:30,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 11:28:30,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1660 transitions. [2023-08-30 11:28:30,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40636474908200737 [2023-08-30 11:28:30,573 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1660 transitions. [2023-08-30 11:28:30,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1660 transitions. [2023-08-30 11:28:30,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:28:30,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1660 transitions. [2023-08-30 11:28:30,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:28:30,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 817.0) internal successors, (4902), 6 states have internal predecessors, (4902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:28:30,582 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 817.0) internal successors, (4902), 6 states have internal predecessors, (4902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:28:30,582 INFO L175 Difference]: Start difference. First operand has 58 places, 78 transitions, 308 flow. Second operand 5 states and 1660 transitions. [2023-08-30 11:28:30,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 173 transitions, 1006 flow [2023-08-30 11:28:30,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 173 transitions, 986 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:28:30,615 INFO L231 Difference]: Finished difference. Result has 62 places, 89 transitions, 445 flow [2023-08-30 11:28:30,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=445, PETRI_PLACES=62, PETRI_TRANSITIONS=89} [2023-08-30 11:28:30,615 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -6 predicate places. [2023-08-30 11:28:30,616 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 89 transitions, 445 flow [2023-08-30 11:28:30,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 309.5) internal successors, (1238), 4 states have internal predecessors, (1238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:28:30,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:28:30,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:28:30,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 11:28:30,617 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-08-30 11:28:30,617 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:28:30,617 INFO L85 PathProgramCache]: Analyzing trace with hash 2096044133, now seen corresponding path program 1 times [2023-08-30 11:28:30,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:28:30,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920174658] [2023-08-30 11:28:30,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:28:30,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:28:30,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:28:30,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:28:30,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:28:30,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920174658] [2023-08-30 11:28:30,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920174658] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:28:30,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522585846] [2023-08-30 11:28:30,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:28:30,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:28:30,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:28:30,725 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 11:28:30,731 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 11:28:30,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:28:30,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:28:30,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:28:30,885 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 11:28:30,885 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:28:30,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522585846] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:28:30,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:28:30,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-08-30 11:28:30,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367834240] [2023-08-30 11:28:30,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:28:30,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:28:30,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:28:30,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:28:30,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 11:28:30,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 323 out of 817 [2023-08-30 11:28:30,892 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 89 transitions, 445 flow. Second operand has 3 states, 3 states have (on average 326.6666666666667) internal successors, (980), 3 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:28:30,892 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:28:30,892 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 323 of 817 [2023-08-30 11:28:30,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:28:39,267 INFO L130 PetriNetUnfolder]: 39846/52451 cut-off events. [2023-08-30 11:28:39,267 INFO L131 PetriNetUnfolder]: For 60488/60488 co-relation queries the response was YES. [2023-08-30 11:28:39,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138295 conditions, 52451 events. 39846/52451 cut-off events. For 60488/60488 co-relation queries the response was YES. Maximal size of possible extension queue 1844. Compared 278792 event pairs, 26260 based on Foata normal form. 5820/47287 useless extension candidates. Maximal degree in co-relation 138275. Up to 52451 conditions per place. [2023-08-30 11:28:39,515 INFO L137 encePairwiseOnDemand]: 810/817 looper letters, 81 selfloop transitions, 1 changer transitions 0/82 dead transitions. [2023-08-30 11:28:39,515 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 82 transitions, 555 flow [2023-08-30 11:28:39,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:28:39,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:28:39,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1012 transitions. [2023-08-30 11:28:39,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4128926968584251 [2023-08-30 11:28:39,517 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1012 transitions. [2023-08-30 11:28:39,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1012 transitions. [2023-08-30 11:28:39,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:28:39,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1012 transitions. [2023-08-30 11:28:39,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 337.3333333333333) internal successors, (1012), 3 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:28:39,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 817.0) internal successors, (3268), 4 states have internal predecessors, (3268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:28:39,522 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 817.0) internal successors, (3268), 4 states have internal predecessors, (3268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:28:39,522 INFO L175 Difference]: Start difference. First operand has 62 places, 89 transitions, 445 flow. Second operand 3 states and 1012 transitions. [2023-08-30 11:28:39,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 82 transitions, 555 flow [2023-08-30 11:28:39,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 82 transitions, 547 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-30 11:28:39,535 INFO L231 Difference]: Finished difference. Result has 56 places, 82 transitions, 385 flow [2023-08-30 11:28:39,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=383, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=385, PETRI_PLACES=56, PETRI_TRANSITIONS=82} [2023-08-30 11:28:39,536 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -12 predicate places. [2023-08-30 11:28:39,536 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 82 transitions, 385 flow [2023-08-30 11:28:39,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 326.6666666666667) internal successors, (980), 3 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:28:39,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:28:39,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:28:39,545 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 11:28:39,743 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 11:28:39,743 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-08-30 11:28:39,743 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:28:39,744 INFO L85 PathProgramCache]: Analyzing trace with hash 561227585, now seen corresponding path program 1 times [2023-08-30 11:28:39,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:28:39,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831707524] [2023-08-30 11:28:39,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:28:39,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:28:39,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:28:40,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:28:40,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:28:40,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831707524] [2023-08-30 11:28:40,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831707524] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:28:40,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:28:40,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:28:40,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235241378] [2023-08-30 11:28:40,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:28:40,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:28:40,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:28:40,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:28:40,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:28:40,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 321 out of 817 [2023-08-30 11:28:40,027 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 82 transitions, 385 flow. Second operand has 3 states, 3 states have (on average 324.6666666666667) internal successors, (974), 3 states have internal predecessors, (974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:28:40,027 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:28:40,027 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 321 of 817 [2023-08-30 11:28:40,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:28:47,015 INFO L130 PetriNetUnfolder]: 35326/46431 cut-off events. [2023-08-30 11:28:47,016 INFO L131 PetriNetUnfolder]: For 28439/28439 co-relation queries the response was YES. [2023-08-30 11:28:47,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123312 conditions, 46431 events. 35326/46431 cut-off events. For 28439/28439 co-relation queries the response was YES. Maximal size of possible extension queue 1627. Compared 250151 event pairs, 9350 based on Foata normal form. 0/37367 useless extension candidates. Maximal degree in co-relation 123292. Up to 34131 conditions per place. [2023-08-30 11:28:47,246 INFO L137 encePairwiseOnDemand]: 814/817 looper letters, 100 selfloop transitions, 2 changer transitions 0/102 dead transitions. [2023-08-30 11:28:47,246 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 102 transitions, 647 flow [2023-08-30 11:28:47,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:28:47,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:28:47,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1021 transitions. [2023-08-30 11:28:47,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41656466748266013 [2023-08-30 11:28:47,248 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1021 transitions. [2023-08-30 11:28:47,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1021 transitions. [2023-08-30 11:28:47,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:28:47,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1021 transitions. [2023-08-30 11:28:47,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 340.3333333333333) internal successors, (1021), 3 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:28:47,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 817.0) internal successors, (3268), 4 states have internal predecessors, (3268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:28:47,253 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 817.0) internal successors, (3268), 4 states have internal predecessors, (3268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:28:47,253 INFO L175 Difference]: Start difference. First operand has 56 places, 82 transitions, 385 flow. Second operand 3 states and 1021 transitions. [2023-08-30 11:28:47,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 102 transitions, 647 flow [2023-08-30 11:28:47,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 102 transitions, 646 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:28:47,261 INFO L231 Difference]: Finished difference. Result has 58 places, 82 transitions, 392 flow [2023-08-30 11:28:47,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=392, PETRI_PLACES=58, PETRI_TRANSITIONS=82} [2023-08-30 11:28:47,262 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -10 predicate places. [2023-08-30 11:28:47,262 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 82 transitions, 392 flow [2023-08-30 11:28:47,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 324.6666666666667) internal successors, (974), 3 states have internal predecessors, (974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:28:47,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:28:47,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:28:47,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 11:28:47,263 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-08-30 11:28:47,263 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:28:47,264 INFO L85 PathProgramCache]: Analyzing trace with hash 561291028, now seen corresponding path program 1 times [2023-08-30 11:28:47,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:28:47,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194466315] [2023-08-30 11:28:47,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:28:47,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:28:47,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:28:47,581 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:28:47,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:28:47,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194466315] [2023-08-30 11:28:47,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194466315] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:28:47,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:28:47,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 11:28:47,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605771849] [2023-08-30 11:28:47,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:28:47,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:28:47,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:28:47,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:28:47,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 11:28:47,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 817 [2023-08-30 11:28:47,695 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 82 transitions, 392 flow. Second operand has 4 states, 4 states have (on average 309.75) internal successors, (1239), 4 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:28:47,696 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:28:47,696 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 817 [2023-08-30 11:28:47,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:28:54,633 INFO L130 PetriNetUnfolder]: 33060/43509 cut-off events. [2023-08-30 11:28:54,633 INFO L131 PetriNetUnfolder]: For 32509/32509 co-relation queries the response was YES. [2023-08-30 11:28:54,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118872 conditions, 43509 events. 33060/43509 cut-off events. For 32509/32509 co-relation queries the response was YES. Maximal size of possible extension queue 1509. Compared 224415 event pairs, 21038 based on Foata normal form. 404/37849 useless extension candidates. Maximal degree in co-relation 118850. Up to 37107 conditions per place. [2023-08-30 11:28:54,842 INFO L137 encePairwiseOnDemand]: 806/817 looper letters, 85 selfloop transitions, 30 changer transitions 0/115 dead transitions. [2023-08-30 11:28:54,842 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 115 transitions, 738 flow [2023-08-30 11:28:54,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 11:28:54,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 11:28:54,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1608 transitions. [2023-08-30 11:28:54,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3936352509179927 [2023-08-30 11:28:54,846 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1608 transitions. [2023-08-30 11:28:54,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1608 transitions. [2023-08-30 11:28:54,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:28:54,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1608 transitions. [2023-08-30 11:28:54,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 321.6) internal successors, (1608), 5 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:28:54,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 817.0) internal successors, (4902), 6 states have internal predecessors, (4902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:28:54,856 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 817.0) internal successors, (4902), 6 states have internal predecessors, (4902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:28:54,856 INFO L175 Difference]: Start difference. First operand has 58 places, 82 transitions, 392 flow. Second operand 5 states and 1608 transitions. [2023-08-30 11:28:54,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 115 transitions, 738 flow [2023-08-30 11:28:54,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 115 transitions, 732 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:28:54,864 INFO L231 Difference]: Finished difference. Result has 62 places, 83 transitions, 488 flow [2023-08-30 11:28:54,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=488, PETRI_PLACES=62, PETRI_TRANSITIONS=83} [2023-08-30 11:28:54,865 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -6 predicate places. [2023-08-30 11:28:54,865 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 83 transitions, 488 flow [2023-08-30 11:28:54,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 309.75) internal successors, (1239), 4 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:28:54,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:28:54,866 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:28:54,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 11:28:54,866 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-08-30 11:28:54,867 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:28:54,867 INFO L85 PathProgramCache]: Analyzing trace with hash 561291027, now seen corresponding path program 1 times [2023-08-30 11:28:54,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:28:54,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359899377] [2023-08-30 11:28:54,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:28:54,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:28:54,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:28:54,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:28:54,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:28:54,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359899377] [2023-08-30 11:28:54,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359899377] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:28:54,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:28:54,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 11:28:54,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832393267] [2023-08-30 11:28:54,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:28:54,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:28:54,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:28:54,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:28:54,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 11:28:55,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 817 [2023-08-30 11:28:55,087 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 83 transitions, 488 flow. Second operand has 4 states, 4 states have (on average 309.75) internal successors, (1239), 4 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:28:55,087 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:28:55,088 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 817 [2023-08-30 11:28:55,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:29:07,783 INFO L130 PetriNetUnfolder]: 57366/75951 cut-off events. [2023-08-30 11:29:07,783 INFO L131 PetriNetUnfolder]: For 65932/65932 co-relation queries the response was YES. [2023-08-30 11:29:07,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208743 conditions, 75951 events. 57366/75951 cut-off events. For 65932/65932 co-relation queries the response was YES. Maximal size of possible extension queue 2531. Compared 426225 event pairs, 36632 based on Foata normal form. 2140/69963 useless extension candidates. Maximal degree in co-relation 208719. Up to 43477 conditions per place. [2023-08-30 11:29:08,184 INFO L137 encePairwiseOnDemand]: 807/817 looper letters, 129 selfloop transitions, 22 changer transitions 0/151 dead transitions. [2023-08-30 11:29:08,184 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 151 transitions, 1040 flow [2023-08-30 11:29:08,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 11:29:08,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 11:29:08,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1636 transitions. [2023-08-30 11:29:08,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4004895960832313 [2023-08-30 11:29:08,187 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1636 transitions. [2023-08-30 11:29:08,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1636 transitions. [2023-08-30 11:29:08,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:29:08,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1636 transitions. [2023-08-30 11:29:08,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 327.2) internal successors, (1636), 5 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:29:08,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 817.0) internal successors, (4902), 6 states have internal predecessors, (4902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:29:08,192 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 817.0) internal successors, (4902), 6 states have internal predecessors, (4902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:29:08,192 INFO L175 Difference]: Start difference. First operand has 62 places, 83 transitions, 488 flow. Second operand 5 states and 1636 transitions. [2023-08-30 11:29:08,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 151 transitions, 1040 flow [2023-08-30 11:29:08,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 151 transitions, 1027 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-30 11:29:08,211 INFO L231 Difference]: Finished difference. Result has 67 places, 85 transitions, 584 flow [2023-08-30 11:29:08,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=584, PETRI_PLACES=67, PETRI_TRANSITIONS=85} [2023-08-30 11:29:08,212 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -1 predicate places. [2023-08-30 11:29:08,212 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 85 transitions, 584 flow [2023-08-30 11:29:08,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 309.75) internal successors, (1239), 4 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:29:08,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:29:08,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:29:08,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 11:29:08,213 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-08-30 11:29:08,214 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:29:08,214 INFO L85 PathProgramCache]: Analyzing trace with hash 561291111, now seen corresponding path program 1 times [2023-08-30 11:29:08,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:29:08,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474767941] [2023-08-30 11:29:08,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:29:08,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:29:08,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:29:08,324 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:29:08,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:29:08,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474767941] [2023-08-30 11:29:08,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474767941] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:29:08,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:29:08,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 11:29:08,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551329404] [2023-08-30 11:29:08,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:29:08,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:29:08,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:29:08,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:29:08,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 11:29:08,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 817 [2023-08-30 11:29:08,425 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 85 transitions, 584 flow. Second operand has 4 states, 4 states have (on average 309.75) internal successors, (1239), 4 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:29:08,425 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:29:08,425 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 817 [2023-08-30 11:29:08,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:29:30,615 INFO L130 PetriNetUnfolder]: 93916/124627 cut-off events. [2023-08-30 11:29:30,615 INFO L131 PetriNetUnfolder]: For 137907/137907 co-relation queries the response was YES. [2023-08-30 11:29:31,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 357055 conditions, 124627 events. 93916/124627 cut-off events. For 137907/137907 co-relation queries the response was YES. Maximal size of possible extension queue 3846. Compared 743603 event pairs, 58504 based on Foata normal form. 0/117679 useless extension candidates. Maximal degree in co-relation 357028. Up to 75939 conditions per place. [2023-08-30 11:29:31,387 INFO L137 encePairwiseOnDemand]: 807/817 looper letters, 142 selfloop transitions, 24 changer transitions 6/172 dead transitions. [2023-08-30 11:29:31,387 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 172 transitions, 1373 flow [2023-08-30 11:29:31,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 11:29:31,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 11:29:31,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1638 transitions. [2023-08-30 11:29:31,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40097919216646266 [2023-08-30 11:29:31,390 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1638 transitions. [2023-08-30 11:29:31,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1638 transitions. [2023-08-30 11:29:31,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:29:31,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1638 transitions. [2023-08-30 11:29:31,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 327.6) internal successors, (1638), 5 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:29:31,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 817.0) internal successors, (4902), 6 states have internal predecessors, (4902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:29:31,396 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 817.0) internal successors, (4902), 6 states have internal predecessors, (4902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:29:31,396 INFO L175 Difference]: Start difference. First operand has 67 places, 85 transitions, 584 flow. Second operand 5 states and 1638 transitions. [2023-08-30 11:29:31,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 172 transitions, 1373 flow [2023-08-30 11:29:31,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 172 transitions, 1310 flow, removed 7 selfloop flow, removed 2 redundant places. [2023-08-30 11:29:31,440 INFO L231 Difference]: Finished difference. Result has 71 places, 99 transitions, 788 flow [2023-08-30 11:29:31,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=543, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=788, PETRI_PLACES=71, PETRI_TRANSITIONS=99} [2023-08-30 11:29:31,440 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 3 predicate places. [2023-08-30 11:29:31,441 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 99 transitions, 788 flow [2023-08-30 11:29:31,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 309.75) internal successors, (1239), 4 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:29:31,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:29:31,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:29:31,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 11:29:31,441 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-08-30 11:29:31,441 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:29:31,441 INFO L85 PathProgramCache]: Analyzing trace with hash -414905387, now seen corresponding path program 1 times [2023-08-30 11:29:31,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:29:31,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054848408] [2023-08-30 11:29:31,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:29:31,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:29:31,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:29:31,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:29:31,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:29:31,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054848408] [2023-08-30 11:29:31,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054848408] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:29:31,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037497949] [2023-08-30 11:29:31,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:29:31,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:29:31,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:29:31,594 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 11:29:31,601 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 11:29:31,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:29:31,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 11:29:31,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:29:31,831 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:29:31,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:29:31,871 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:29:31,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037497949] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:29:31,871 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:29:31,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2023-08-30 11:29:31,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18385398] [2023-08-30 11:29:31,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:29:31,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 11:29:31,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:29:31,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 11:29:31,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 11:29:31,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 320 out of 817 [2023-08-30 11:29:31,882 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 99 transitions, 788 flow. Second operand has 6 states, 6 states have (on average 324.1666666666667) internal successors, (1945), 6 states have internal predecessors, (1945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:29:31,882 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:29:31,882 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 320 of 817 [2023-08-30 11:29:31,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand