./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/chl-chromosome-opt-symm.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/chl-chromosome-opt-symm.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e9065224c0b163ad014fc0aee4009feab43ed37ef70e06d8d8f3b14d045f755a --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 14:43:26,802 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 14:43:26,804 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 14:43:26,822 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 14:43:26,823 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 14:43:26,824 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 14:43:26,824 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 14:43:26,826 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 14:43:26,827 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 14:43:26,827 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 14:43:26,828 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 14:43:26,829 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 14:43:26,829 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 14:43:26,830 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 14:43:26,831 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 14:43:26,831 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 14:43:26,832 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 14:43:26,832 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 14:43:26,833 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 14:43:26,835 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 14:43:26,840 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 14:43:26,841 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 14:43:26,842 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 14:43:26,842 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 14:43:26,845 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 14:43:26,845 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 14:43:26,845 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 14:43:26,846 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 14:43:26,846 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 14:43:26,847 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 14:43:26,847 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 14:43:26,848 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 14:43:26,848 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 14:43:26,849 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 14:43:26,850 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 14:43:26,850 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 14:43:26,850 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 14:43:26,850 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 14:43:26,851 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 14:43:26,851 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 14:43:26,852 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 14:43:26,853 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 14:43:26,869 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 14:43:26,869 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 14:43:26,870 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 14:43:26,870 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 14:43:26,870 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 14:43:26,870 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 14:43:26,871 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 14:43:26,871 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 14:43:26,871 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 14:43:26,871 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 14:43:26,872 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 14:43:26,872 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 14:43:26,872 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 14:43:26,872 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 14:43:26,872 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 14:43:26,872 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 14:43:26,873 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 14:43:26,873 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 14:43:26,873 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 14:43:26,873 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 14:43:26,873 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 14:43:26,873 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 14:43:26,873 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 14:43:26,874 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 14:43:26,874 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 14:43:26,874 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 14:43:26,874 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:43:26,874 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 14:43:26,874 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 14:43:26,875 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 14:43:26,875 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 14:43:26,875 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 14:43:26,875 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 14:43:26,875 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 14:43:26,875 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 14:43:26,875 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 14:43:26,876 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 14:43:26,876 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e9065224c0b163ad014fc0aee4009feab43ed37ef70e06d8d8f3b14d045f755a Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 14:43:27,122 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 14:43:27,145 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 14:43:27,147 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 14:43:27,148 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 14:43:27,148 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 14:43:27,149 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-chromosome-opt-symm.wvr.c [2023-08-30 14:43:28,543 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 14:43:28,666 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 14:43:28,666 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-opt-symm.wvr.c [2023-08-30 14:43:28,672 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f12bea84e/e1495bbd95ad41c4bb954885a4b08e6c/FLAGadf7db95f [2023-08-30 14:43:28,691 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f12bea84e/e1495bbd95ad41c4bb954885a4b08e6c [2023-08-30 14:43:28,693 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 14:43:28,694 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 14:43:28,696 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 14:43:28,696 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 14:43:28,698 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 14:43:28,698 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:43:28" (1/1) ... [2023-08-30 14:43:28,699 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fd732 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:43:28, skipping insertion in model container [2023-08-30 14:43:28,700 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:43:28" (1/1) ... [2023-08-30 14:43:28,703 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 14:43:28,719 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 14:43:28,812 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/chl-chromosome-opt-symm.wvr.c[2566,2579] [2023-08-30 14:43:28,815 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:43:28,828 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 14:43:28,840 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/chl-chromosome-opt-symm.wvr.c[2566,2579] [2023-08-30 14:43:28,842 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:43:28,850 INFO L208 MainTranslator]: Completed translation [2023-08-30 14:43:28,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:43:28 WrapperNode [2023-08-30 14:43:28,850 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 14:43:28,851 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 14:43:28,851 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 14:43:28,851 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 14:43:28,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:43:28" (1/1) ... [2023-08-30 14:43:28,860 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:43:28" (1/1) ... [2023-08-30 14:43:28,873 INFO L138 Inliner]: procedures = 24, calls = 35, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 188 [2023-08-30 14:43:28,874 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 14:43:28,874 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 14:43:28,874 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 14:43:28,874 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 14:43:28,879 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:43:28" (1/1) ... [2023-08-30 14:43:28,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:43:28" (1/1) ... [2023-08-30 14:43:28,881 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:43:28" (1/1) ... [2023-08-30 14:43:28,881 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:43:28" (1/1) ... [2023-08-30 14:43:28,885 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:43:28" (1/1) ... [2023-08-30 14:43:28,887 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:43:28" (1/1) ... [2023-08-30 14:43:28,888 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:43:28" (1/1) ... [2023-08-30 14:43:28,889 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:43:28" (1/1) ... [2023-08-30 14:43:28,890 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 14:43:28,891 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 14:43:28,891 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 14:43:28,891 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 14:43:28,892 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:43:28" (1/1) ... [2023-08-30 14:43:28,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:43:28,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:43:28,934 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 14:43:28,965 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 14:43:28,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 14:43:28,987 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 14:43:28,987 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 14:43:28,987 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 14:43:28,988 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 14:43:28,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 14:43:28,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 14:43:28,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 14:43:28,990 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 14:43:28,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 14:43:28,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 14:43:28,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 14:43:28,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 14:43:28,991 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 14:43:29,104 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 14:43:29,105 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 14:43:29,349 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 14:43:29,355 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 14:43:29,355 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-30 14:43:29,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:43:29 BoogieIcfgContainer [2023-08-30 14:43:29,357 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 14:43:29,358 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 14:43:29,358 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 14:43:29,360 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 14:43:29,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 02:43:28" (1/3) ... [2023-08-30 14:43:29,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@540e8e74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:43:29, skipping insertion in model container [2023-08-30 14:43:29,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:43:28" (2/3) ... [2023-08-30 14:43:29,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@540e8e74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:43:29, skipping insertion in model container [2023-08-30 14:43:29,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:43:29" (3/3) ... [2023-08-30 14:43:29,362 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-opt-symm.wvr.c [2023-08-30 14:43:29,378 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 14:43:29,383 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 14:43:29,384 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-08-30 14:43:29,384 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 14:43:29,484 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 14:43:29,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 217 transitions, 450 flow [2023-08-30 14:43:29,584 INFO L130 PetriNetUnfolder]: 19/215 cut-off events. [2023-08-30 14:43:29,584 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 14:43:29,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 224 conditions, 215 events. 19/215 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 266 event pairs, 0 based on Foata normal form. 0/186 useless extension candidates. Maximal degree in co-relation 152. Up to 3 conditions per place. [2023-08-30 14:43:29,589 INFO L82 GeneralOperation]: Start removeDead. Operand has 205 places, 217 transitions, 450 flow [2023-08-30 14:43:29,593 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 189 places, 200 transitions, 412 flow [2023-08-30 14:43:29,596 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:43:29,618 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 189 places, 200 transitions, 412 flow [2023-08-30 14:43:29,620 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 189 places, 200 transitions, 412 flow [2023-08-30 14:43:29,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 189 places, 200 transitions, 412 flow [2023-08-30 14:43:29,645 INFO L130 PetriNetUnfolder]: 18/200 cut-off events. [2023-08-30 14:43:29,645 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 14:43:29,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209 conditions, 200 events. 18/200 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 263 event pairs, 0 based on Foata normal form. 0/173 useless extension candidates. Maximal degree in co-relation 152. Up to 3 conditions per place. [2023-08-30 14:43:29,648 INFO L119 LiptonReduction]: Number of co-enabled transitions 4028 [2023-08-30 14:43:34,338 INFO L134 LiptonReduction]: Checked pairs total: 4814 [2023-08-30 14:43:34,342 INFO L136 LiptonReduction]: Total number of compositions: 228 [2023-08-30 14:43:34,352 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:43:34,356 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;@50cf00fe, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:43:34,356 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-08-30 14:43:34,358 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 14:43:34,358 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:43:34,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:43:34,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 14:43:34,359 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 14:43:34,362 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:43:34,362 INFO L85 PathProgramCache]: Analyzing trace with hash 27179, now seen corresponding path program 1 times [2023-08-30 14:43:34,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:43:34,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173907924] [2023-08-30 14:43:34,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:43:34,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:43:34,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:43:34,592 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 14:43:34,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:43:34,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173907924] [2023-08-30 14:43:34,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173907924] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:43:34,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:43:34,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:43:34,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544220468] [2023-08-30 14:43:34,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:43:34,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:43:34,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:43:34,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:43:34,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:43:34,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 445 [2023-08-30 14:43:34,681 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 34 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 195.66666666666666) internal successors, (587), 3 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:34,681 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:43:34,682 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 445 [2023-08-30 14:43:34,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:43:34,787 INFO L130 PetriNetUnfolder]: 285/489 cut-off events. [2023-08-30 14:43:34,787 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2023-08-30 14:43:34,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1016 conditions, 489 events. 285/489 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1823 event pairs, 186 based on Foata normal form. 0/303 useless extension candidates. Maximal degree in co-relation 446. Up to 242 conditions per place. [2023-08-30 14:43:34,791 INFO L137 encePairwiseOnDemand]: 436/445 looper letters, 55 selfloop transitions, 4 changer transitions 0/60 dead transitions. [2023-08-30 14:43:34,791 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 60 transitions, 262 flow [2023-08-30 14:43:34,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:43:34,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:43:34,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 650 transitions. [2023-08-30 14:43:34,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4868913857677903 [2023-08-30 14:43:34,802 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 650 transitions. [2023-08-30 14:43:34,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 650 transitions. [2023-08-30 14:43:34,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:43:34,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 650 transitions. [2023-08-30 14:43:34,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 216.66666666666666) internal successors, (650), 3 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:34,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 445.0) internal successors, (1780), 4 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:34,812 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 445.0) internal successors, (1780), 4 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:34,813 INFO L175 Difference]: Start difference. First operand has 35 places, 34 transitions, 80 flow. Second operand 3 states and 650 transitions. [2023-08-30 14:43:34,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 60 transitions, 262 flow [2023-08-30 14:43:34,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 60 transitions, 246 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 14:43:34,817 INFO L231 Difference]: Finished difference. Result has 34 places, 36 transitions, 106 flow [2023-08-30 14:43:34,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=445, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=34, PETRI_TRANSITIONS=36} [2023-08-30 14:43:34,820 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -1 predicate places. [2023-08-30 14:43:34,820 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 36 transitions, 106 flow [2023-08-30 14:43:34,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 195.66666666666666) internal successors, (587), 3 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:34,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:43:34,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 14:43:34,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 14:43:34,822 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 14:43:34,822 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:43:34,822 INFO L85 PathProgramCache]: Analyzing trace with hash 844243, now seen corresponding path program 1 times [2023-08-30 14:43:34,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:43:34,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222031369] [2023-08-30 14:43:34,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:43:34,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:43:34,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:43:34,897 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 14:43:34,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:43:34,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222031369] [2023-08-30 14:43:34,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222031369] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:43:34,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965250672] [2023-08-30 14:43:34,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:43:34,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:43:34,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:43:34,901 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 14:43:34,929 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 14:43:34,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:43:34,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 14:43:35,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:43:35,055 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 14:43:35,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:43:35,074 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 14:43:35,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965250672] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:43:35,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:43:35,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 14:43:35,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989076631] [2023-08-30 14:43:35,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:43:35,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 14:43:35,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:43:35,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 14:43:35,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 14:43:35,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 445 [2023-08-30 14:43:35,149 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 36 transitions, 106 flow. Second operand has 7 states, 7 states have (on average 196.14285714285714) internal successors, (1373), 7 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:35,150 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:43:35,150 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 445 [2023-08-30 14:43:35,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:43:35,412 INFO L130 PetriNetUnfolder]: 717/1221 cut-off events. [2023-08-30 14:43:35,413 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2023-08-30 14:43:35,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2494 conditions, 1221 events. 717/1221 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 5591 event pairs, 465 based on Foata normal form. 0/772 useless extension candidates. Maximal degree in co-relation 1951. Up to 240 conditions per place. [2023-08-30 14:43:35,419 INFO L137 encePairwiseOnDemand]: 437/445 looper letters, 125 selfloop transitions, 21 changer transitions 0/147 dead transitions. [2023-08-30 14:43:35,419 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 147 transitions, 672 flow [2023-08-30 14:43:35,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 14:43:35,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 14:43:35,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1517 transitions. [2023-08-30 14:43:35,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4869983948635634 [2023-08-30 14:43:35,423 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1517 transitions. [2023-08-30 14:43:35,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1517 transitions. [2023-08-30 14:43:35,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:43:35,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1517 transitions. [2023-08-30 14:43:35,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 216.71428571428572) internal successors, (1517), 7 states have internal predecessors, (1517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:35,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 445.0) internal successors, (3560), 8 states have internal predecessors, (3560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:35,431 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 445.0) internal successors, (3560), 8 states have internal predecessors, (3560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:35,431 INFO L175 Difference]: Start difference. First operand has 34 places, 36 transitions, 106 flow. Second operand 7 states and 1517 transitions. [2023-08-30 14:43:35,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 147 transitions, 672 flow [2023-08-30 14:43:35,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 147 transitions, 658 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:43:35,436 INFO L231 Difference]: Finished difference. Result has 41 places, 51 transitions, 237 flow [2023-08-30 14:43:35,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=445, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=237, PETRI_PLACES=41, PETRI_TRANSITIONS=51} [2023-08-30 14:43:35,436 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 6 predicate places. [2023-08-30 14:43:35,437 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 51 transitions, 237 flow [2023-08-30 14:43:35,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 196.14285714285714) internal successors, (1373), 7 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:35,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:43:35,438 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-08-30 14:43:35,444 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 14:43:35,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:43:35,643 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 14:43:35,644 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:43:35,644 INFO L85 PathProgramCache]: Analyzing trace with hash 26172331, now seen corresponding path program 1 times [2023-08-30 14:43:35,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:43:35,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99175342] [2023-08-30 14:43:35,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:43:35,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:43:35,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:43:35,735 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:43:35,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:43:35,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99175342] [2023-08-30 14:43:35,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99175342] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:43:35,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265976197] [2023-08-30 14:43:35,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:43:35,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:43:35,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:43:35,741 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 14:43:35,743 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 14:43:35,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:43:35,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 14:43:35,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:43:35,800 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:43:35,800 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:43:35,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265976197] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:43:35,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:43:35,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 14:43:35,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568520267] [2023-08-30 14:43:35,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:43:35,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 14:43:35,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:43:35,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 14:43:35,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-30 14:43:35,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 445 [2023-08-30 14:43:35,834 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 51 transitions, 237 flow. Second operand has 5 states, 5 states have (on average 195.8) internal successors, (979), 5 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:35,835 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:43:35,835 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 445 [2023-08-30 14:43:35,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:43:36,002 INFO L130 PetriNetUnfolder]: 711/1213 cut-off events. [2023-08-30 14:43:36,002 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-08-30 14:43:36,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2496 conditions, 1213 events. 711/1213 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 5758 event pairs, 465 based on Foata normal form. 2/774 useless extension candidates. Maximal degree in co-relation 1478. Up to 709 conditions per place. [2023-08-30 14:43:36,007 INFO L137 encePairwiseOnDemand]: 439/445 looper letters, 81 selfloop transitions, 9 changer transitions 0/91 dead transitions. [2023-08-30 14:43:36,007 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 91 transitions, 467 flow [2023-08-30 14:43:36,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 14:43:36,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 14:43:36,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1063 transitions. [2023-08-30 14:43:36,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47775280898876404 [2023-08-30 14:43:36,010 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1063 transitions. [2023-08-30 14:43:36,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1063 transitions. [2023-08-30 14:43:36,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:43:36,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1063 transitions. [2023-08-30 14:43:36,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 212.6) internal successors, (1063), 5 states have internal predecessors, (1063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:36,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 445.0) internal successors, (2670), 6 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:36,016 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 445.0) internal successors, (2670), 6 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:36,016 INFO L175 Difference]: Start difference. First operand has 41 places, 51 transitions, 237 flow. Second operand 5 states and 1063 transitions. [2023-08-30 14:43:36,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 91 transitions, 467 flow [2023-08-30 14:43:36,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 91 transitions, 448 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 14:43:36,018 INFO L231 Difference]: Finished difference. Result has 41 places, 43 transitions, 182 flow [2023-08-30 14:43:36,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=445, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=182, PETRI_PLACES=41, PETRI_TRANSITIONS=43} [2023-08-30 14:43:36,019 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 6 predicate places. [2023-08-30 14:43:36,019 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 43 transitions, 182 flow [2023-08-30 14:43:36,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 195.8) internal successors, (979), 5 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:36,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:43:36,020 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 14:43:36,027 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-30 14:43:36,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-08-30 14:43:36,225 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 14:43:36,225 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:43:36,226 INFO L85 PathProgramCache]: Analyzing trace with hash -618140345, now seen corresponding path program 2 times [2023-08-30 14:43:36,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:43:36,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444547007] [2023-08-30 14:43:36,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:43:36,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:43:36,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:43:36,288 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 14:43:36,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:43:36,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444547007] [2023-08-30 14:43:36,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444547007] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:43:36,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786419649] [2023-08-30 14:43:36,290 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 14:43:36,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:43:36,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:43:36,291 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 14:43:36,293 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 14:43:36,341 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 14:43:36,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 14:43:36,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 14:43:36,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:43:36,352 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 14:43:36,352 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:43:36,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1786419649] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:43:36,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:43:36,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 14:43:36,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859224077] [2023-08-30 14:43:36,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:43:36,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:43:36,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:43:36,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:43:36,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 14:43:36,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 445 [2023-08-30 14:43:36,369 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 43 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 198.0) internal successors, (594), 3 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:36,369 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:43:36,369 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 445 [2023-08-30 14:43:36,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:43:36,468 INFO L130 PetriNetUnfolder]: 711/1211 cut-off events. [2023-08-30 14:43:36,468 INFO L131 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2023-08-30 14:43:36,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2483 conditions, 1211 events. 711/1211 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 5761 event pairs, 465 based on Foata normal form. 2/758 useless extension candidates. Maximal degree in co-relation 1937. Up to 1181 conditions per place. [2023-08-30 14:43:36,473 INFO L137 encePairwiseOnDemand]: 442/445 looper letters, 39 selfloop transitions, 1 changer transitions 0/41 dead transitions. [2023-08-30 14:43:36,473 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 41 transitions, 242 flow [2023-08-30 14:43:36,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:43:36,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:43:36,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 621 transitions. [2023-08-30 14:43:36,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4651685393258427 [2023-08-30 14:43:36,475 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 621 transitions. [2023-08-30 14:43:36,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 621 transitions. [2023-08-30 14:43:36,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:43:36,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 621 transitions. [2023-08-30 14:43:36,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 207.0) internal successors, (621), 3 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:36,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 445.0) internal successors, (1780), 4 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:36,479 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 445.0) internal successors, (1780), 4 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:36,479 INFO L175 Difference]: Start difference. First operand has 41 places, 43 transitions, 182 flow. Second operand 3 states and 621 transitions. [2023-08-30 14:43:36,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 41 transitions, 242 flow [2023-08-30 14:43:36,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 41 transitions, 203 flow, removed 2 selfloop flow, removed 7 redundant places. [2023-08-30 14:43:36,482 INFO L231 Difference]: Finished difference. Result has 34 places, 41 transitions, 125 flow [2023-08-30 14:43:36,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=445, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=125, PETRI_PLACES=34, PETRI_TRANSITIONS=41} [2023-08-30 14:43:36,484 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -1 predicate places. [2023-08-30 14:43:36,484 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 41 transitions, 125 flow [2023-08-30 14:43:36,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 198.0) internal successors, (594), 3 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:36,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:43:36,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:43:36,491 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 14:43:36,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:43:36,689 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 14:43:36,689 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:43:36,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1465035838, now seen corresponding path program 1 times [2023-08-30 14:43:36,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:43:36,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450051649] [2023-08-30 14:43:36,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:43:36,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:43:36,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:43:36,748 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 14:43:36,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:43:36,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450051649] [2023-08-30 14:43:36,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450051649] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:43:36,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:43:36,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:43:36,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938010182] [2023-08-30 14:43:36,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:43:36,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:43:36,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:43:36,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:43:36,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:43:36,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 445 [2023-08-30 14:43:36,763 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 41 transitions, 125 flow. Second operand has 3 states, 3 states have (on average 201.66666666666666) internal successors, (605), 3 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:36,763 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:43:36,763 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 445 [2023-08-30 14:43:36,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:43:36,911 INFO L130 PetriNetUnfolder]: 1011/1706 cut-off events. [2023-08-30 14:43:36,911 INFO L131 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2023-08-30 14:43:36,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3450 conditions, 1706 events. 1011/1706 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 8797 event pairs, 465 based on Foata normal form. 0/1074 useless extension candidates. Maximal degree in co-relation 3442. Up to 1182 conditions per place. [2023-08-30 14:43:36,917 INFO L137 encePairwiseOnDemand]: 442/445 looper letters, 56 selfloop transitions, 2 changer transitions 0/59 dead transitions. [2023-08-30 14:43:36,917 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 59 transitions, 279 flow [2023-08-30 14:43:36,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:43:36,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:43:36,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 644 transitions. [2023-08-30 14:43:36,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48239700374531835 [2023-08-30 14:43:36,919 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 644 transitions. [2023-08-30 14:43:36,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 644 transitions. [2023-08-30 14:43:36,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:43:36,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 644 transitions. [2023-08-30 14:43:36,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 214.66666666666666) internal successors, (644), 3 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:36,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 445.0) internal successors, (1780), 4 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:36,922 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 445.0) internal successors, (1780), 4 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:36,922 INFO L175 Difference]: Start difference. First operand has 34 places, 41 transitions, 125 flow. Second operand 3 states and 644 transitions. [2023-08-30 14:43:36,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 59 transitions, 279 flow [2023-08-30 14:43:36,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 59 transitions, 278 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:43:36,924 INFO L231 Difference]: Finished difference. Result has 36 places, 42 transitions, 136 flow [2023-08-30 14:43:36,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=445, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=36, PETRI_TRANSITIONS=42} [2023-08-30 14:43:36,924 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 1 predicate places. [2023-08-30 14:43:36,925 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 42 transitions, 136 flow [2023-08-30 14:43:36,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 201.66666666666666) internal successors, (605), 3 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:36,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:43:36,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:43:36,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 14:43:36,925 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 14:43:36,926 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:43:36,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1464340604, now seen corresponding path program 1 times [2023-08-30 14:43:36,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:43:36,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962387651] [2023-08-30 14:43:36,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:43:36,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:43:36,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:43:36,959 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 14:43:36,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:43:36,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962387651] [2023-08-30 14:43:36,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962387651] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:43:36,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:43:36,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:43:36,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930987739] [2023-08-30 14:43:36,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:43:36,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:43:36,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:43:36,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:43:36,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:43:37,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 445 [2023-08-30 14:43:37,002 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 42 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 195.66666666666666) internal successors, (587), 3 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:37,002 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:43:37,002 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 445 [2023-08-30 14:43:37,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:43:37,128 INFO L130 PetriNetUnfolder]: 809/1367 cut-off events. [2023-08-30 14:43:37,129 INFO L131 PetriNetUnfolder]: For 284/284 co-relation queries the response was YES. [2023-08-30 14:43:37,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3129 conditions, 1367 events. 809/1367 cut-off events. For 284/284 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 6583 event pairs, 564 based on Foata normal form. 1/991 useless extension candidates. Maximal degree in co-relation 3120. Up to 1339 conditions per place. [2023-08-30 14:43:37,134 INFO L137 encePairwiseOnDemand]: 440/445 looper letters, 33 selfloop transitions, 7 changer transitions 0/41 dead transitions. [2023-08-30 14:43:37,134 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 41 transitions, 212 flow [2023-08-30 14:43:37,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:43:37,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:43:37,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 611 transitions. [2023-08-30 14:43:37,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45767790262172287 [2023-08-30 14:43:37,136 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 611 transitions. [2023-08-30 14:43:37,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 611 transitions. [2023-08-30 14:43:37,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:43:37,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 611 transitions. [2023-08-30 14:43:37,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 203.66666666666666) internal successors, (611), 3 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:37,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 445.0) internal successors, (1780), 4 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:37,139 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 445.0) internal successors, (1780), 4 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:37,140 INFO L175 Difference]: Start difference. First operand has 36 places, 42 transitions, 136 flow. Second operand 3 states and 611 transitions. [2023-08-30 14:43:37,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 41 transitions, 212 flow [2023-08-30 14:43:37,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 41 transitions, 210 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:43:37,141 INFO L231 Difference]: Finished difference. Result has 38 places, 41 transitions, 153 flow [2023-08-30 14:43:37,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=445, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=153, PETRI_PLACES=38, PETRI_TRANSITIONS=41} [2023-08-30 14:43:37,142 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 3 predicate places. [2023-08-30 14:43:37,142 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 41 transitions, 153 flow [2023-08-30 14:43:37,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 195.66666666666666) internal successors, (587), 3 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:37,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:43:37,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:43:37,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 14:43:37,143 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 14:43:37,143 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:43:37,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1293207381, now seen corresponding path program 1 times [2023-08-30 14:43:37,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:43:37,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750318956] [2023-08-30 14:43:37,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:43:37,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:43:37,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:43:37,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 14:43:37,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:43:37,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750318956] [2023-08-30 14:43:37,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750318956] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:43:37,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:43:37,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:43:37,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673831534] [2023-08-30 14:43:37,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:43:37,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:43:37,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:43:37,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:43:37,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:43:37,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 445 [2023-08-30 14:43:37,175 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 41 transitions, 153 flow. Second operand has 3 states, 3 states have (on average 201.33333333333334) internal successors, (604), 3 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:37,175 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:43:37,175 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 445 [2023-08-30 14:43:37,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:43:37,303 INFO L130 PetriNetUnfolder]: 961/1703 cut-off events. [2023-08-30 14:43:37,303 INFO L131 PetriNetUnfolder]: For 239/239 co-relation queries the response was YES. [2023-08-30 14:43:37,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3847 conditions, 1703 events. 961/1703 cut-off events. For 239/239 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 9226 event pairs, 564 based on Foata normal form. 0/1295 useless extension candidates. Maximal degree in co-relation 3836. Up to 1288 conditions per place. [2023-08-30 14:43:37,308 INFO L137 encePairwiseOnDemand]: 441/445 looper letters, 53 selfloop transitions, 1 changer transitions 0/55 dead transitions. [2023-08-30 14:43:37,309 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 55 transitions, 300 flow [2023-08-30 14:43:37,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:43:37,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:43:37,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 638 transitions. [2023-08-30 14:43:37,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4779026217228464 [2023-08-30 14:43:37,310 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 638 transitions. [2023-08-30 14:43:37,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 638 transitions. [2023-08-30 14:43:37,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:43:37,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 638 transitions. [2023-08-30 14:43:37,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 212.66666666666666) internal successors, (638), 3 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:37,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 445.0) internal successors, (1780), 4 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:37,314 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 445.0) internal successors, (1780), 4 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:37,314 INFO L175 Difference]: Start difference. First operand has 38 places, 41 transitions, 153 flow. Second operand 3 states and 638 transitions. [2023-08-30 14:43:37,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 55 transitions, 300 flow [2023-08-30 14:43:37,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 55 transitions, 286 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:43:37,315 INFO L231 Difference]: Finished difference. Result has 39 places, 41 transitions, 148 flow [2023-08-30 14:43:37,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=445, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=39, PETRI_TRANSITIONS=41} [2023-08-30 14:43:37,316 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 4 predicate places. [2023-08-30 14:43:37,316 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 41 transitions, 148 flow [2023-08-30 14:43:37,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 201.33333333333334) internal successors, (604), 3 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:37,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:43:37,316 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:43:37,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 14:43:37,317 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 14:43:37,317 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:43:37,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1413171765, now seen corresponding path program 1 times [2023-08-30 14:43:37,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:43:37,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371382206] [2023-08-30 14:43:37,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:43:37,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:43:37,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:43:37,356 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 14:43:37,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:43:37,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371382206] [2023-08-30 14:43:37,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371382206] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:43:37,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435682570] [2023-08-30 14:43:37,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:43:37,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:43:37,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:43:37,359 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 14:43:37,360 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 14:43:37,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:43:37,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 14:43:37,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:43:37,446 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 14:43:37,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:43:37,464 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 14:43:37,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1435682570] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:43:37,465 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:43:37,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-08-30 14:43:37,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630882800] [2023-08-30 14:43:37,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:43:37,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 14:43:37,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:43:37,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 14:43:37,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-08-30 14:43:37,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 445 [2023-08-30 14:43:37,527 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 41 transitions, 148 flow. Second operand has 8 states, 8 states have (on average 191.125) internal successors, (1529), 8 states have internal predecessors, (1529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:37,527 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:43:37,527 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 445 [2023-08-30 14:43:37,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:43:37,611 INFO L130 PetriNetUnfolder]: 241/434 cut-off events. [2023-08-30 14:43:37,611 INFO L131 PetriNetUnfolder]: For 103/103 co-relation queries the response was YES. [2023-08-30 14:43:37,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1050 conditions, 434 events. 241/434 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1608 event pairs, 187 based on Foata normal form. 6/366 useless extension candidates. Maximal degree in co-relation 1039. Up to 421 conditions per place. [2023-08-30 14:43:37,612 INFO L137 encePairwiseOnDemand]: 440/445 looper letters, 27 selfloop transitions, 10 changer transitions 0/38 dead transitions. [2023-08-30 14:43:37,613 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 38 transitions, 205 flow [2023-08-30 14:43:37,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 14:43:37,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 14:43:37,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1176 transitions. [2023-08-30 14:43:37,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4404494382022472 [2023-08-30 14:43:37,615 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1176 transitions. [2023-08-30 14:43:37,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1176 transitions. [2023-08-30 14:43:37,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:43:37,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1176 transitions. [2023-08-30 14:43:37,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 196.0) internal successors, (1176), 6 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:37,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 445.0) internal successors, (3115), 7 states have internal predecessors, (3115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:37,621 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 445.0) internal successors, (3115), 7 states have internal predecessors, (3115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:37,621 INFO L175 Difference]: Start difference. First operand has 39 places, 41 transitions, 148 flow. Second operand 6 states and 1176 transitions. [2023-08-30 14:43:37,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 38 transitions, 205 flow [2023-08-30 14:43:37,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 38 transitions, 204 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:43:37,622 INFO L231 Difference]: Finished difference. Result has 46 places, 38 transitions, 168 flow [2023-08-30 14:43:37,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=445, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=168, PETRI_PLACES=46, PETRI_TRANSITIONS=38} [2023-08-30 14:43:37,623 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 11 predicate places. [2023-08-30 14:43:37,623 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 38 transitions, 168 flow [2023-08-30 14:43:37,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 191.125) internal successors, (1529), 8 states have internal predecessors, (1529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:37,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:43:37,624 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:43:37,630 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 14:43:37,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:43:37,829 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 14:43:37,829 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:43:37,829 INFO L85 PathProgramCache]: Analyzing trace with hash -240103931, now seen corresponding path program 2 times [2023-08-30 14:43:37,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:43:37,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138511703] [2023-08-30 14:43:37,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:43:37,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:43:37,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:43:37,915 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-30 14:43:37,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:43:37,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138511703] [2023-08-30 14:43:37,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138511703] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:43:37,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699137374] [2023-08-30 14:43:37,916 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 14:43:37,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:43:37,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:43:37,917 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 14:43:37,919 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 14:43:37,994 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 14:43:37,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 14:43:37,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 14:43:37,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:43:38,060 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-30 14:43:38,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:43:38,122 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-30 14:43:38,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699137374] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:43:38,122 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:43:38,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-08-30 14:43:38,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957062745] [2023-08-30 14:43:38,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:43:38,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-30 14:43:38,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:43:38,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-30 14:43:38,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2023-08-30 14:43:38,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 445 [2023-08-30 14:43:38,253 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 38 transitions, 168 flow. Second operand has 17 states, 17 states have (on average 190.52941176470588) internal successors, (3239), 17 states have internal predecessors, (3239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:38,253 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:43:38,253 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 445 [2023-08-30 14:43:38,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:43:38,346 INFO L130 PetriNetUnfolder]: 241/436 cut-off events. [2023-08-30 14:43:38,346 INFO L131 PetriNetUnfolder]: For 89/89 co-relation queries the response was YES. [2023-08-30 14:43:38,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1078 conditions, 436 events. 241/436 cut-off events. For 89/89 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1620 event pairs, 187 based on Foata normal form. 2/364 useless extension candidates. Maximal degree in co-relation 1063. Up to 421 conditions per place. [2023-08-30 14:43:38,348 INFO L137 encePairwiseOnDemand]: 440/445 looper letters, 27 selfloop transitions, 12 changer transitions 0/40 dead transitions. [2023-08-30 14:43:38,348 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 40 transitions, 254 flow [2023-08-30 14:43:38,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 14:43:38,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 14:43:38,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1363 transitions. [2023-08-30 14:43:38,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375601926163724 [2023-08-30 14:43:38,351 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1363 transitions. [2023-08-30 14:43:38,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1363 transitions. [2023-08-30 14:43:38,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:43:38,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1363 transitions. [2023-08-30 14:43:38,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 194.71428571428572) internal successors, (1363), 7 states have internal predecessors, (1363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:38,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 445.0) internal successors, (3560), 8 states have internal predecessors, (3560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:38,357 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 445.0) internal successors, (3560), 8 states have internal predecessors, (3560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:38,357 INFO L175 Difference]: Start difference. First operand has 46 places, 38 transitions, 168 flow. Second operand 7 states and 1363 transitions. [2023-08-30 14:43:38,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 40 transitions, 254 flow [2023-08-30 14:43:38,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 40 transitions, 234 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 14:43:38,358 INFO L231 Difference]: Finished difference. Result has 48 places, 40 transitions, 190 flow [2023-08-30 14:43:38,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=445, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=190, PETRI_PLACES=48, PETRI_TRANSITIONS=40} [2023-08-30 14:43:38,359 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 13 predicate places. [2023-08-30 14:43:38,359 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 40 transitions, 190 flow [2023-08-30 14:43:38,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 190.52941176470588) internal successors, (3239), 17 states have internal predecessors, (3239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:38,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:43:38,360 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:43:38,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 14:43:38,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:43:38,576 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 14:43:38,576 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:43:38,576 INFO L85 PathProgramCache]: Analyzing trace with hash -939616203, now seen corresponding path program 3 times [2023-08-30 14:43:38,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:43:38,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888631931] [2023-08-30 14:43:38,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:43:38,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:43:38,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:43:38,622 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-30 14:43:38,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:43:38,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888631931] [2023-08-30 14:43:38,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888631931] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:43:38,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568196516] [2023-08-30 14:43:38,623 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 14:43:38,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:43:38,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:43:38,624 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:43:38,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 14:43:38,700 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-30 14:43:38,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 14:43:38,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 14:43:38,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:43:38,707 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-30 14:43:38,708 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:43:38,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568196516] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:43:38,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:43:38,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 14:43:38,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411032163] [2023-08-30 14:43:38,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:43:38,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:43:38,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:43:38,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:43:38,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:43:38,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 445 [2023-08-30 14:43:38,721 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 40 transitions, 190 flow. Second operand has 4 states, 4 states have (on average 201.75) internal successors, (807), 4 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:38,721 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:43:38,721 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 445 [2023-08-30 14:43:38,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:43:38,806 INFO L130 PetriNetUnfolder]: 205/374 cut-off events. [2023-08-30 14:43:38,806 INFO L131 PetriNetUnfolder]: For 54/54 co-relation queries the response was YES. [2023-08-30 14:43:38,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 932 conditions, 374 events. 205/374 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1415 event pairs, 27 based on Foata normal form. 0/334 useless extension candidates. Maximal degree in co-relation 916. Up to 150 conditions per place. [2023-08-30 14:43:38,808 INFO L137 encePairwiseOnDemand]: 442/445 looper letters, 66 selfloop transitions, 2 changer transitions 0/69 dead transitions. [2023-08-30 14:43:38,808 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 69 transitions, 401 flow [2023-08-30 14:43:38,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:43:38,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:43:38,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 855 transitions. [2023-08-30 14:43:38,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4803370786516854 [2023-08-30 14:43:38,810 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 855 transitions. [2023-08-30 14:43:38,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 855 transitions. [2023-08-30 14:43:38,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:43:38,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 855 transitions. [2023-08-30 14:43:38,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 213.75) internal successors, (855), 4 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:38,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 445.0) internal successors, (2225), 5 states have internal predecessors, (2225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:38,814 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 445.0) internal successors, (2225), 5 states have internal predecessors, (2225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:38,814 INFO L175 Difference]: Start difference. First operand has 48 places, 40 transitions, 190 flow. Second operand 4 states and 855 transitions. [2023-08-30 14:43:38,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 69 transitions, 401 flow [2023-08-30 14:43:38,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 69 transitions, 381 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-30 14:43:38,816 INFO L231 Difference]: Finished difference. Result has 46 places, 39 transitions, 170 flow [2023-08-30 14:43:38,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=445, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=170, PETRI_PLACES=46, PETRI_TRANSITIONS=39} [2023-08-30 14:43:38,816 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 11 predicate places. [2023-08-30 14:43:38,817 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 39 transitions, 170 flow [2023-08-30 14:43:38,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 201.75) internal successors, (807), 4 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:38,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:43:38,817 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:43:38,824 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 14:43:39,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:43:39,022 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 14:43:39,022 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:43:39,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1598860432, now seen corresponding path program 1 times [2023-08-30 14:43:39,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:43:39,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002844461] [2023-08-30 14:43:39,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:43:39,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:43:39,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:43:39,070 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-30 14:43:39,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:43:39,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002844461] [2023-08-30 14:43:39,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002844461] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:43:39,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:43:39,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:43:39,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43584004] [2023-08-30 14:43:39,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:43:39,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:43:39,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:43:39,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:43:39,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:43:39,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 445 [2023-08-30 14:43:39,080 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 39 transitions, 170 flow. Second operand has 3 states, 3 states have (on average 202.66666666666666) internal successors, (608), 3 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:39,080 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:43:39,080 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 445 [2023-08-30 14:43:39,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:43:39,151 INFO L130 PetriNetUnfolder]: 356/661 cut-off events. [2023-08-30 14:43:39,151 INFO L131 PetriNetUnfolder]: For 289/289 co-relation queries the response was YES. [2023-08-30 14:43:39,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1646 conditions, 661 events. 356/661 cut-off events. For 289/289 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2736 event pairs, 155 based on Foata normal form. 0/605 useless extension candidates. Maximal degree in co-relation 1630. Up to 371 conditions per place. [2023-08-30 14:43:39,154 INFO L137 encePairwiseOnDemand]: 441/445 looper letters, 55 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2023-08-30 14:43:39,154 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 58 transitions, 339 flow [2023-08-30 14:43:39,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:43:39,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:43:39,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 644 transitions. [2023-08-30 14:43:39,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48239700374531835 [2023-08-30 14:43:39,155 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 644 transitions. [2023-08-30 14:43:39,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 644 transitions. [2023-08-30 14:43:39,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:43:39,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 644 transitions. [2023-08-30 14:43:39,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 214.66666666666666) internal successors, (644), 3 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:39,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 445.0) internal successors, (1780), 4 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:39,159 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 445.0) internal successors, (1780), 4 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:39,159 INFO L175 Difference]: Start difference. First operand has 46 places, 39 transitions, 170 flow. Second operand 3 states and 644 transitions. [2023-08-30 14:43:39,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 58 transitions, 339 flow [2023-08-30 14:43:39,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 58 transitions, 333 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:43:39,160 INFO L231 Difference]: Finished difference. Result has 47 places, 40 transitions, 183 flow [2023-08-30 14:43:39,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=445, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=183, PETRI_PLACES=47, PETRI_TRANSITIONS=40} [2023-08-30 14:43:39,161 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 12 predicate places. [2023-08-30 14:43:39,161 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 40 transitions, 183 flow [2023-08-30 14:43:39,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 202.66666666666666) internal successors, (608), 3 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:39,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:43:39,162 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:43:39,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 14:43:39,162 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 14:43:39,162 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:43:39,162 INFO L85 PathProgramCache]: Analyzing trace with hash 944892518, now seen corresponding path program 1 times [2023-08-30 14:43:39,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:43:39,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811411326] [2023-08-30 14:43:39,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:43:39,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:43:39,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:43:39,315 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-30 14:43:39,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:43:39,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811411326] [2023-08-30 14:43:39,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811411326] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:43:39,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:43:39,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:43:39,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223168789] [2023-08-30 14:43:39,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:43:39,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:43:39,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:43:39,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:43:39,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 14:43:39,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 445 [2023-08-30 14:43:39,326 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 40 transitions, 183 flow. Second operand has 4 states, 4 states have (on average 201.25) internal successors, (805), 4 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:39,326 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:43:39,326 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 445 [2023-08-30 14:43:39,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:43:39,390 INFO L130 PetriNetUnfolder]: 356/643 cut-off events. [2023-08-30 14:43:39,390 INFO L131 PetriNetUnfolder]: For 215/215 co-relation queries the response was YES. [2023-08-30 14:43:39,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1651 conditions, 643 events. 356/643 cut-off events. For 215/215 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2599 event pairs, 162 based on Foata normal form. 0/593 useless extension candidates. Maximal degree in co-relation 1634. Up to 411 conditions per place. [2023-08-30 14:43:39,392 INFO L137 encePairwiseOnDemand]: 441/445 looper letters, 49 selfloop transitions, 3 changer transitions 0/53 dead transitions. [2023-08-30 14:43:39,393 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 53 transitions, 336 flow [2023-08-30 14:43:39,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:43:39,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:43:39,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 828 transitions. [2023-08-30 14:43:39,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4651685393258427 [2023-08-30 14:43:39,394 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 828 transitions. [2023-08-30 14:43:39,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 828 transitions. [2023-08-30 14:43:39,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:43:39,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 828 transitions. [2023-08-30 14:43:39,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 207.0) internal successors, (828), 4 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:39,398 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 445.0) internal successors, (2225), 5 states have internal predecessors, (2225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:39,398 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 445.0) internal successors, (2225), 5 states have internal predecessors, (2225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:39,398 INFO L175 Difference]: Start difference. First operand has 47 places, 40 transitions, 183 flow. Second operand 4 states and 828 transitions. [2023-08-30 14:43:39,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 53 transitions, 336 flow [2023-08-30 14:43:39,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 53 transitions, 332 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:43:39,400 INFO L231 Difference]: Finished difference. Result has 48 places, 39 transitions, 185 flow [2023-08-30 14:43:39,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=445, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=185, PETRI_PLACES=48, PETRI_TRANSITIONS=39} [2023-08-30 14:43:39,400 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 13 predicate places. [2023-08-30 14:43:39,400 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 39 transitions, 185 flow [2023-08-30 14:43:39,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 201.25) internal successors, (805), 4 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:39,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:43:39,401 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:43:39,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 14:43:39,401 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 14:43:39,401 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:43:39,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1090762758, now seen corresponding path program 1 times [2023-08-30 14:43:39,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:43:39,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312196128] [2023-08-30 14:43:39,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:43:39,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:43:39,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:43:39,592 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-30 14:43:39,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:43:39,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312196128] [2023-08-30 14:43:39,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312196128] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:43:39,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:43:39,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:43:39,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003496692] [2023-08-30 14:43:39,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:43:39,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:43:39,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:43:39,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:43:39,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 14:43:39,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 445 [2023-08-30 14:43:39,602 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 39 transitions, 185 flow. Second operand has 4 states, 4 states have (on average 201.25) internal successors, (805), 4 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:39,602 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:43:39,602 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 445 [2023-08-30 14:43:39,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:43:39,666 INFO L130 PetriNetUnfolder]: 356/635 cut-off events. [2023-08-30 14:43:39,667 INFO L131 PetriNetUnfolder]: For 258/258 co-relation queries the response was YES. [2023-08-30 14:43:39,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1708 conditions, 635 events. 356/635 cut-off events. For 258/258 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2544 event pairs, 162 based on Foata normal form. 8/593 useless extension candidates. Maximal degree in co-relation 1690. Up to 403 conditions per place. [2023-08-30 14:43:39,668 INFO L137 encePairwiseOnDemand]: 442/445 looper letters, 38 selfloop transitions, 2 changer transitions 11/52 dead transitions. [2023-08-30 14:43:39,669 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 52 transitions, 332 flow [2023-08-30 14:43:39,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:43:39,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:43:39,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 827 transitions. [2023-08-30 14:43:39,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4646067415730337 [2023-08-30 14:43:39,670 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 827 transitions. [2023-08-30 14:43:39,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 827 transitions. [2023-08-30 14:43:39,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:43:39,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 827 transitions. [2023-08-30 14:43:39,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 206.75) internal successors, (827), 4 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:39,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 445.0) internal successors, (2225), 5 states have internal predecessors, (2225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:39,674 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 445.0) internal successors, (2225), 5 states have internal predecessors, (2225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:39,674 INFO L175 Difference]: Start difference. First operand has 48 places, 39 transitions, 185 flow. Second operand 4 states and 827 transitions. [2023-08-30 14:43:39,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 52 transitions, 332 flow [2023-08-30 14:43:39,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 52 transitions, 329 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:43:39,675 INFO L231 Difference]: Finished difference. Result has 48 places, 32 transitions, 166 flow [2023-08-30 14:43:39,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=445, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=166, PETRI_PLACES=48, PETRI_TRANSITIONS=32} [2023-08-30 14:43:39,676 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 13 predicate places. [2023-08-30 14:43:39,677 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 32 transitions, 166 flow [2023-08-30 14:43:39,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 201.25) internal successors, (805), 4 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:39,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:43:39,677 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:43:39,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 14:43:39,677 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 14:43:39,677 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:43:39,677 INFO L85 PathProgramCache]: Analyzing trace with hash -345542565, now seen corresponding path program 1 times [2023-08-30 14:43:39,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:43:39,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823103017] [2023-08-30 14:43:39,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:43:39,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:43:39,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:43:39,742 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-08-30 14:43:39,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:43:39,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823103017] [2023-08-30 14:43:39,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823103017] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:43:39,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:43:39,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:43:39,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531669425] [2023-08-30 14:43:39,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:43:39,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:43:39,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:43:39,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:43:39,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:43:39,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 445 [2023-08-30 14:43:39,761 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 32 transitions, 166 flow. Second operand has 3 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:39,761 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:43:39,761 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 445 [2023-08-30 14:43:39,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:43:39,811 INFO L130 PetriNetUnfolder]: 173/330 cut-off events. [2023-08-30 14:43:39,811 INFO L131 PetriNetUnfolder]: For 130/130 co-relation queries the response was YES. [2023-08-30 14:43:39,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 941 conditions, 330 events. 173/330 cut-off events. For 130/130 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1098 event pairs, 19 based on Foata normal form. 0/318 useless extension candidates. Maximal degree in co-relation 923. Up to 232 conditions per place. [2023-08-30 14:43:39,813 INFO L137 encePairwiseOnDemand]: 441/445 looper letters, 34 selfloop transitions, 4 changer transitions 0/39 dead transitions. [2023-08-30 14:43:39,813 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 39 transitions, 263 flow [2023-08-30 14:43:39,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:43:39,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:43:39,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 620 transitions. [2023-08-30 14:43:39,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46441947565543074 [2023-08-30 14:43:39,814 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 620 transitions. [2023-08-30 14:43:39,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 620 transitions. [2023-08-30 14:43:39,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:43:39,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 620 transitions. [2023-08-30 14:43:39,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 206.66666666666666) internal successors, (620), 3 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:39,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 445.0) internal successors, (1780), 4 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:39,817 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 445.0) internal successors, (1780), 4 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:39,817 INFO L175 Difference]: Start difference. First operand has 48 places, 32 transitions, 166 flow. Second operand 3 states and 620 transitions. [2023-08-30 14:43:39,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 39 transitions, 263 flow [2023-08-30 14:43:39,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 39 transitions, 253 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-08-30 14:43:39,818 INFO L231 Difference]: Finished difference. Result has 42 places, 32 transitions, 167 flow [2023-08-30 14:43:39,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=445, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=167, PETRI_PLACES=42, PETRI_TRANSITIONS=32} [2023-08-30 14:43:39,819 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 7 predicate places. [2023-08-30 14:43:39,819 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 32 transitions, 167 flow [2023-08-30 14:43:39,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:39,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:43:39,820 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:43:39,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 14:43:39,820 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 14:43:39,820 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:43:39,820 INFO L85 PathProgramCache]: Analyzing trace with hash -345542566, now seen corresponding path program 1 times [2023-08-30 14:43:39,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:43:39,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559742791] [2023-08-30 14:43:39,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:43:39,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:43:39,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:43:39,867 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-30 14:43:39,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:43:39,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559742791] [2023-08-30 14:43:39,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559742791] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:43:39,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:43:39,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:43:39,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510632268] [2023-08-30 14:43:39,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:43:39,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:43:39,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:43:39,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:43:39,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:43:39,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 445 [2023-08-30 14:43:39,878 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 167 flow. Second operand has 3 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:39,878 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:43:39,878 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 445 [2023-08-30 14:43:39,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:43:39,914 INFO L130 PetriNetUnfolder]: 156/301 cut-off events. [2023-08-30 14:43:39,915 INFO L131 PetriNetUnfolder]: For 165/165 co-relation queries the response was YES. [2023-08-30 14:43:39,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 900 conditions, 301 events. 156/301 cut-off events. For 165/165 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 981 event pairs, 4 based on Foata normal form. 12/313 useless extension candidates. Maximal degree in co-relation 884. Up to 244 conditions per place. [2023-08-30 14:43:39,915 INFO L137 encePairwiseOnDemand]: 443/445 looper letters, 0 selfloop transitions, 0 changer transitions 38/38 dead transitions. [2023-08-30 14:43:39,915 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 38 transitions, 261 flow [2023-08-30 14:43:39,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:43:39,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:43:39,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 621 transitions. [2023-08-30 14:43:39,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4651685393258427 [2023-08-30 14:43:39,917 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 621 transitions. [2023-08-30 14:43:39,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 621 transitions. [2023-08-30 14:43:39,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:43:39,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 621 transitions. [2023-08-30 14:43:39,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 207.0) internal successors, (621), 3 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:39,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 445.0) internal successors, (1780), 4 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:39,921 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 445.0) internal successors, (1780), 4 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:39,921 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 167 flow. Second operand 3 states and 621 transitions. [2023-08-30 14:43:39,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 38 transitions, 261 flow [2023-08-30 14:43:39,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 38 transitions, 257 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:43:39,922 INFO L231 Difference]: Finished difference. Result has 42 places, 0 transitions, 0 flow [2023-08-30 14:43:39,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=445, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=42, PETRI_TRANSITIONS=0} [2023-08-30 14:43:39,922 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 7 predicate places. [2023-08-30 14:43:39,922 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 0 transitions, 0 flow [2023-08-30 14:43:39,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:39,924 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 16 remaining) [2023-08-30 14:43:39,924 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2023-08-30 14:43:39,925 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 16 remaining) [2023-08-30 14:43:39,925 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 16 remaining) [2023-08-30 14:43:39,925 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 16 remaining) [2023-08-30 14:43:39,925 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 16 remaining) [2023-08-30 14:43:39,925 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 16 remaining) [2023-08-30 14:43:39,925 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 16 remaining) [2023-08-30 14:43:39,925 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 16 remaining) [2023-08-30 14:43:39,925 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 16 remaining) [2023-08-30 14:43:39,925 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 16 remaining) [2023-08-30 14:43:39,926 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 16 remaining) [2023-08-30 14:43:39,926 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2023-08-30 14:43:39,926 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2023-08-30 14:43:39,926 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2023-08-30 14:43:39,926 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2023-08-30 14:43:39,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 14:43:39,927 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:43:39,930 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 14:43:39,930 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 14:43:39,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 02:43:39 BasicIcfg [2023-08-30 14:43:39,933 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 14:43:39,933 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 14:43:39,933 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 14:43:39,933 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 14:43:39,933 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:43:29" (3/4) ... [2023-08-30 14:43:39,935 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 14:43:39,939 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-30 14:43:39,939 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-30 14:43:39,942 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2023-08-30 14:43:39,942 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 14:43:39,943 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 14:43:39,943 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 14:43:39,971 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 14:43:39,971 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 14:43:39,973 INFO L158 Benchmark]: Toolchain (without parser) took 11277.33ms. Allocated memory was 67.1MB in the beginning and 220.2MB in the end (delta: 153.1MB). Free memory was 44.4MB in the beginning and 119.6MB in the end (delta: -75.2MB). Peak memory consumption was 76.3MB. Max. memory is 16.1GB. [2023-08-30 14:43:39,973 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 54.5MB. Free memory was 32.2MB in the beginning and 32.2MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 14:43:39,973 INFO L158 Benchmark]: CACSL2BoogieTranslator took 154.71ms. Allocated memory is still 67.1MB. Free memory was 44.2MB in the beginning and 32.9MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-08-30 14:43:39,974 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.95ms. Allocated memory is still 67.1MB. Free memory was 32.9MB in the beginning and 30.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 14:43:39,974 INFO L158 Benchmark]: Boogie Preprocessor took 16.43ms. Allocated memory is still 67.1MB. Free memory was 30.6MB in the beginning and 29.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 14:43:39,974 INFO L158 Benchmark]: RCFGBuilder took 465.95ms. Allocated memory is still 67.1MB. Free memory was 28.9MB in the beginning and 29.4MB in the end (delta: -492.7kB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 14:43:39,974 INFO L158 Benchmark]: TraceAbstraction took 10574.37ms. Allocated memory was 67.1MB in the beginning and 220.2MB in the end (delta: 153.1MB). Free memory was 28.7MB in the beginning and 123.8MB in the end (delta: -95.1MB). Peak memory consumption was 58.0MB. Max. memory is 16.1GB. [2023-08-30 14:43:39,974 INFO L158 Benchmark]: Witness Printer took 38.51ms. Allocated memory is still 220.2MB. Free memory was 123.8MB in the beginning and 119.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 14:43:39,977 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 54.5MB. Free memory was 32.2MB in the beginning and 32.2MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 154.71ms. Allocated memory is still 67.1MB. Free memory was 44.2MB in the beginning and 32.9MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.95ms. Allocated memory is still 67.1MB. Free memory was 32.9MB in the beginning and 30.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 16.43ms. Allocated memory is still 67.1MB. Free memory was 30.6MB in the beginning and 29.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 465.95ms. Allocated memory is still 67.1MB. Free memory was 28.9MB in the beginning and 29.4MB in the end (delta: -492.7kB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * TraceAbstraction took 10574.37ms. Allocated memory was 67.1MB in the beginning and 220.2MB in the end (delta: 153.1MB). Free memory was 28.7MB in the beginning and 123.8MB in the end (delta: -95.1MB). Peak memory consumption was 58.0MB. Max. memory is 16.1GB. * Witness Printer took 38.51ms. Allocated memory is still 220.2MB. Free memory was 123.8MB in the beginning and 119.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.7s, 189 PlacesBefore, 35 PlacesAfterwards, 200 TransitionsBefore, 34 TransitionsAfterwards, 4028 CoEnabledTransitionPairs, 7 FixpointIterations, 100 TrivialSequentialCompositions, 73 ConcurrentSequentialCompositions, 23 TrivialYvCompositions, 20 ConcurrentYvCompositions, 12 ChoiceCompositions, 228 TotalNumberOfCompositions, 4814 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4487, independent: 4419, independent conditional: 0, independent unconditional: 4419, dependent: 68, dependent conditional: 0, dependent unconditional: 68, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2338, independent: 2319, independent conditional: 0, independent unconditional: 2319, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4487, independent: 2100, independent conditional: 0, independent unconditional: 2100, dependent: 49, dependent conditional: 0, dependent unconditional: 49, unknown: 2338, unknown conditional: 0, unknown unconditional: 2338] , Statistics on independence cache: Total cache size (in pairs): 74, Positive cache size: 69, Positive conditional cache size: 0, Positive unconditional cache size: 69, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 72]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 72]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 92]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 92]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 269 locations, 16 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 10.4s, OverallIterations: 15, TraceHistogramMax: 5, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1091 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 809 mSDsluCounter, 74 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 109 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1957 IncrementalHoareTripleChecker+Invalid, 2066 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 109 mSolverCounterUnsat, 74 mSDtfsCounter, 1957 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 121 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=237occurred in iteration=2, InterpolantAutomatonStates: 61, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 268 NumberOfCodeBlocks, 258 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 275 ConstructedInterpolants, 0 QuantifiedInterpolants, 585 SizeOfPredicates, 3 NumberOfNonLiveVariables, 991 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 24 InterpolantComputations, 12 PerfectInterpolantSequences, 276/325 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 14:43:40,025 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE