./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/pthread/stack_longer-1.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread/stack_longer-1.i -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 4351dece6a672e511bbcb86915e62fc8a7361763ad7ab88f2e640b2d00ea50a7 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 08:12:52,687 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 08:12:52,690 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 08:12:52,735 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 08:12:52,735 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 08:12:52,738 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 08:12:52,740 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 08:12:52,743 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 08:12:52,745 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 08:12:52,750 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 08:12:52,751 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 08:12:52,753 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 08:12:52,753 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 08:12:52,755 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 08:12:52,756 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 08:12:52,761 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 08:12:52,762 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 08:12:52,764 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 08:12:52,765 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 08:12:52,767 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 08:12:52,774 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 08:12:52,776 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 08:12:52,776 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 08:12:52,778 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 08:12:52,786 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 08:12:52,786 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 08:12:52,786 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 08:12:52,788 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 08:12:52,789 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 08:12:52,790 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 08:12:52,790 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 08:12:52,791 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 08:12:52,793 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 08:12:52,794 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 08:12:52,794 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 08:12:52,795 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 08:12:52,795 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 08:12:52,795 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 08:12:52,796 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 08:12:52,796 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 08:12:52,797 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 08:12:52,799 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 08:12:52,831 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 08:12:52,832 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 08:12:52,833 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 08:12:52,833 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 08:12:52,834 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 08:12:52,834 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 08:12:52,835 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 08:12:52,835 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 08:12:52,835 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 08:12:52,835 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 08:12:52,836 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 08:12:52,836 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 08:12:52,836 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 08:12:52,836 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 08:12:52,836 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 08:12:52,837 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 08:12:52,837 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 08:12:52,837 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 08:12:52,837 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 08:12:52,837 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 08:12:52,838 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 08:12:52,838 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 08:12:52,838 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 08:12:52,838 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 08:12:52,838 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 08:12:52,839 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 08:12:52,839 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 08:12:52,839 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 08:12:52,839 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 08:12:52,839 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 08:12:52,840 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 08:12:52,840 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 08:12:52,840 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 08:12:52,840 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 08:12:52,841 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 08:12:52,841 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 08:12:52,841 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 08:12:52,841 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4351dece6a672e511bbcb86915e62fc8a7361763ad7ab88f2e640b2d00ea50a7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 08:12:53,113 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 08:12:53,140 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 08:12:53,142 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 08:12:53,143 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 08:12:53,143 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 08:12:53,144 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack_longer-1.i [2023-08-30 08:12:54,339 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 08:12:54,636 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 08:12:54,644 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longer-1.i [2023-08-30 08:12:54,661 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5834c9503/95064733cf8f48eaa6ac545622b7ffef/FLAGfd869b0d8 [2023-08-30 08:12:54,672 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5834c9503/95064733cf8f48eaa6ac545622b7ffef [2023-08-30 08:12:54,674 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 08:12:54,675 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 08:12:54,678 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 08:12:54,678 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 08:12:54,680 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 08:12:54,681 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 08:12:54" (1/1) ... [2023-08-30 08:12:54,683 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@249ba4ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:12:54, skipping insertion in model container [2023-08-30 08:12:54,683 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 08:12:54" (1/1) ... [2023-08-30 08:12:54,688 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 08:12:54,739 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 08:12:55,078 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longer-1.i[41527,41540] [2023-08-30 08:12:55,108 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 08:12:55,118 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 08:12:55,159 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longer-1.i[41527,41540] [2023-08-30 08:12:55,168 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 08:12:55,245 INFO L208 MainTranslator]: Completed translation [2023-08-30 08:12:55,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:12:55 WrapperNode [2023-08-30 08:12:55,246 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 08:12:55,247 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 08:12:55,247 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 08:12:55,248 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 08:12:55,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:12:55" (1/1) ... [2023-08-30 08:12:55,282 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:12:55" (1/1) ... [2023-08-30 08:12:55,319 INFO L138 Inliner]: procedures = 277, calls = 39, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 164 [2023-08-30 08:12:55,320 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 08:12:55,321 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 08:12:55,321 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 08:12:55,321 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 08:12:55,329 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:12:55" (1/1) ... [2023-08-30 08:12:55,330 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:12:55" (1/1) ... [2023-08-30 08:12:55,347 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:12:55" (1/1) ... [2023-08-30 08:12:55,348 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:12:55" (1/1) ... [2023-08-30 08:12:55,358 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:12:55" (1/1) ... [2023-08-30 08:12:55,371 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:12:55" (1/1) ... [2023-08-30 08:12:55,373 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:12:55" (1/1) ... [2023-08-30 08:12:55,378 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:12:55" (1/1) ... [2023-08-30 08:12:55,380 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 08:12:55,386 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 08:12:55,387 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 08:12:55,387 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 08:12:55,388 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:12:55" (1/1) ... [2023-08-30 08:12:55,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 08:12:55,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:12:55,416 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 08:12:55,441 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 08:12:55,459 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-30 08:12:55,459 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-30 08:12:55,459 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-30 08:12:55,459 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-30 08:12:55,459 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 08:12:55,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 08:12:55,460 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 08:12:55,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 08:12:55,460 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 08:12:55,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 08:12:55,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 08:12:55,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 08:12:55,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 08:12:55,462 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 08:12:55,633 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 08:12:55,634 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 08:12:55,928 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 08:12:55,935 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 08:12:55,938 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-30 08:12:55,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 08:12:55 BoogieIcfgContainer [2023-08-30 08:12:55,941 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 08:12:55,943 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 08:12:55,943 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 08:12:55,946 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 08:12:55,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 08:12:54" (1/3) ... [2023-08-30 08:12:55,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e883a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 08:12:55, skipping insertion in model container [2023-08-30 08:12:55,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:12:55" (2/3) ... [2023-08-30 08:12:55,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e883a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 08:12:55, skipping insertion in model container [2023-08-30 08:12:55,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 08:12:55" (3/3) ... [2023-08-30 08:12:55,949 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longer-1.i [2023-08-30 08:12:55,956 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 08:12:55,964 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 08:12:55,964 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-30 08:12:55,964 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 08:12:56,077 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 08:12:56,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 169 places, 172 transitions, 360 flow [2023-08-30 08:12:56,203 INFO L130 PetriNetUnfolder]: 10/170 cut-off events. [2023-08-30 08:12:56,204 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 08:12:56,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 170 events. 10/170 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 448 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 132. Up to 3 conditions per place. [2023-08-30 08:12:56,216 INFO L82 GeneralOperation]: Start removeDead. Operand has 169 places, 172 transitions, 360 flow [2023-08-30 08:12:56,221 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 158 places, 161 transitions, 331 flow [2023-08-30 08:12:56,224 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 08:12:56,232 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 158 places, 161 transitions, 331 flow [2023-08-30 08:12:56,235 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 158 places, 161 transitions, 331 flow [2023-08-30 08:12:56,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 161 transitions, 331 flow [2023-08-30 08:12:56,264 INFO L130 PetriNetUnfolder]: 10/161 cut-off events. [2023-08-30 08:12:56,265 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 08:12:56,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 161 events. 10/161 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 373 event pairs, 0 based on Foata normal form. 0/143 useless extension candidates. Maximal degree in co-relation 132. Up to 3 conditions per place. [2023-08-30 08:12:56,271 INFO L119 LiptonReduction]: Number of co-enabled transitions 9140 [2023-08-30 08:12:59,985 INFO L134 LiptonReduction]: Checked pairs total: 13304 [2023-08-30 08:12:59,985 INFO L136 LiptonReduction]: Total number of compositions: 149 [2023-08-30 08:12:59,997 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 08:13:00,004 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;@78e4d46a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 08:13:00,005 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-08-30 08:13:00,011 INFO L130 PetriNetUnfolder]: 1/16 cut-off events. [2023-08-30 08:13:00,011 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 08:13:00,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:13:00,012 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:13:00,012 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:13:00,019 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:13:00,019 INFO L85 PathProgramCache]: Analyzing trace with hash 115018101, now seen corresponding path program 1 times [2023-08-30 08:13:00,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:13:00,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442889588] [2023-08-30 08:13:00,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:13:00,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:13:00,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:13:00,271 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 08:13:00,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:13:00,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442889588] [2023-08-30 08:13:00,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442889588] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:13:00,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:13:00,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:13:00,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17098862] [2023-08-30 08:13:00,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:13:00,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:13:00,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:13:00,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:13:00,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:13:00,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 321 [2023-08-30 08:13:00,341 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 41 transitions, 91 flow. Second operand has 3 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:00,342 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:13:00,342 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 321 [2023-08-30 08:13:00,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:13:00,682 INFO L130 PetriNetUnfolder]: 1214/1987 cut-off events. [2023-08-30 08:13:00,682 INFO L131 PetriNetUnfolder]: For 71/71 co-relation queries the response was YES. [2023-08-30 08:13:00,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3998 conditions, 1987 events. 1214/1987 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 9271 event pairs, 424 based on Foata normal form. 0/1402 useless extension candidates. Maximal degree in co-relation 3738. Up to 1295 conditions per place. [2023-08-30 08:13:00,696 INFO L137 encePairwiseOnDemand]: 314/321 looper letters, 61 selfloop transitions, 3 changer transitions 0/66 dead transitions. [2023-08-30 08:13:00,697 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 66 transitions, 275 flow [2023-08-30 08:13:00,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:13:00,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:13:00,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 539 transitions. [2023-08-30 08:13:00,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5597092419522326 [2023-08-30 08:13:00,713 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 539 transitions. [2023-08-30 08:13:00,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 539 transitions. [2023-08-30 08:13:00,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:13:00,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 539 transitions. [2023-08-30 08:13:00,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 179.66666666666666) internal successors, (539), 3 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:00,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 321.0) internal successors, (1284), 4 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:00,728 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 321.0) internal successors, (1284), 4 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:00,730 INFO L175 Difference]: Start difference. First operand has 43 places, 41 transitions, 91 flow. Second operand 3 states and 539 transitions. [2023-08-30 08:13:00,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 66 transitions, 275 flow [2023-08-30 08:13:00,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 66 transitions, 267 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 08:13:00,737 INFO L231 Difference]: Finished difference. Result has 44 places, 43 transitions, 114 flow [2023-08-30 08:13:00,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=44, PETRI_TRANSITIONS=43} [2023-08-30 08:13:00,742 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 1 predicate places. [2023-08-30 08:13:00,742 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 43 transitions, 114 flow [2023-08-30 08:13:00,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:00,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:13:00,743 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:13:00,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 08:13:00,744 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:13:00,744 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:13:00,745 INFO L85 PathProgramCache]: Analyzing trace with hash -2091787398, now seen corresponding path program 1 times [2023-08-30 08:13:00,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:13:00,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241976874] [2023-08-30 08:13:00,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:13:00,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:13:00,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:13:00,834 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 08:13:00,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:13:00,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241976874] [2023-08-30 08:13:00,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241976874] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:13:00,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:13:00,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:13:00,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76774659] [2023-08-30 08:13:00,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:13:00,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:13:00,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:13:00,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:13:00,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:13:00,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 321 [2023-08-30 08:13:00,845 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 43 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:00,846 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:13:00,846 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 321 [2023-08-30 08:13:00,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:13:01,170 INFO L130 PetriNetUnfolder]: 1852/3127 cut-off events. [2023-08-30 08:13:01,170 INFO L131 PetriNetUnfolder]: For 246/246 co-relation queries the response was YES. [2023-08-30 08:13:01,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6643 conditions, 3127 events. 1852/3127 cut-off events. For 246/246 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 16549 event pairs, 875 based on Foata normal form. 0/2489 useless extension candidates. Maximal degree in co-relation 5870. Up to 1905 conditions per place. [2023-08-30 08:13:01,187 INFO L137 encePairwiseOnDemand]: 316/321 looper letters, 72 selfloop transitions, 2 changer transitions 0/76 dead transitions. [2023-08-30 08:13:01,187 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 76 transitions, 349 flow [2023-08-30 08:13:01,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:13:01,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:13:01,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 544 transitions. [2023-08-30 08:13:01,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.564901349948079 [2023-08-30 08:13:01,191 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 544 transitions. [2023-08-30 08:13:01,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 544 transitions. [2023-08-30 08:13:01,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:13:01,192 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 544 transitions. [2023-08-30 08:13:01,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 181.33333333333334) internal successors, (544), 3 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:01,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 321.0) internal successors, (1284), 4 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:01,198 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 321.0) internal successors, (1284), 4 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:01,198 INFO L175 Difference]: Start difference. First operand has 44 places, 43 transitions, 114 flow. Second operand 3 states and 544 transitions. [2023-08-30 08:13:01,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 76 transitions, 349 flow [2023-08-30 08:13:01,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 76 transitions, 339 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 08:13:01,207 INFO L231 Difference]: Finished difference. Result has 45 places, 44 transitions, 124 flow [2023-08-30 08:13:01,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=45, PETRI_TRANSITIONS=44} [2023-08-30 08:13:01,208 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 2 predicate places. [2023-08-30 08:13:01,208 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 44 transitions, 124 flow [2023-08-30 08:13:01,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:01,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:13:01,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:13:01,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 08:13:01,209 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:13:01,211 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:13:01,212 INFO L85 PathProgramCache]: Analyzing trace with hash 248309452, now seen corresponding path program 1 times [2023-08-30 08:13:01,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:13:01,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882029832] [2023-08-30 08:13:01,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:13:01,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:13:01,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:13:01,300 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 08:13:01,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:13:01,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882029832] [2023-08-30 08:13:01,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882029832] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:13:01,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:13:01,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:13:01,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411391060] [2023-08-30 08:13:01,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:13:01,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:13:01,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:13:01,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:13:01,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:13:01,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 321 [2023-08-30 08:13:01,311 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 44 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:01,311 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:13:01,311 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 321 [2023-08-30 08:13:01,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:13:01,685 INFO L130 PetriNetUnfolder]: 2385/3868 cut-off events. [2023-08-30 08:13:01,686 INFO L131 PetriNetUnfolder]: For 452/452 co-relation queries the response was YES. [2023-08-30 08:13:01,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8929 conditions, 3868 events. 2385/3868 cut-off events. For 452/452 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 21700 event pairs, 1087 based on Foata normal form. 0/3136 useless extension candidates. Maximal degree in co-relation 6016. Up to 2965 conditions per place. [2023-08-30 08:13:01,705 INFO L137 encePairwiseOnDemand]: 316/321 looper letters, 70 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2023-08-30 08:13:01,705 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 74 transitions, 352 flow [2023-08-30 08:13:01,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:13:01,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:13:01,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 541 transitions. [2023-08-30 08:13:01,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5617860851505712 [2023-08-30 08:13:01,708 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 541 transitions. [2023-08-30 08:13:01,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 541 transitions. [2023-08-30 08:13:01,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:13:01,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 541 transitions. [2023-08-30 08:13:01,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 180.33333333333334) internal successors, (541), 3 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:01,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 321.0) internal successors, (1284), 4 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:01,712 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 321.0) internal successors, (1284), 4 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:01,712 INFO L175 Difference]: Start difference. First operand has 45 places, 44 transitions, 124 flow. Second operand 3 states and 541 transitions. [2023-08-30 08:13:01,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 74 transitions, 352 flow [2023-08-30 08:13:01,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 74 transitions, 348 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:13:01,717 INFO L231 Difference]: Finished difference. Result has 47 places, 45 transitions, 138 flow [2023-08-30 08:13:01,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=47, PETRI_TRANSITIONS=45} [2023-08-30 08:13:01,719 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 4 predicate places. [2023-08-30 08:13:01,719 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 45 transitions, 138 flow [2023-08-30 08:13:01,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:01,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:13:01,720 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:13:01,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 08:13:01,720 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:13:01,721 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:13:01,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1971434071, now seen corresponding path program 1 times [2023-08-30 08:13:01,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:13:01,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516689702] [2023-08-30 08:13:01,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:13:01,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:13:01,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:13:01,808 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 08:13:01,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:13:01,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516689702] [2023-08-30 08:13:01,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516689702] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:13:01,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:13:01,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:13:01,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383871265] [2023-08-30 08:13:01,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:13:01,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:13:01,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:13:01,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:13:01,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:13:01,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 321 [2023-08-30 08:13:01,819 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 45 transitions, 138 flow. Second operand has 3 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:01,819 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:13:01,820 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 321 [2023-08-30 08:13:01,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:13:02,146 INFO L130 PetriNetUnfolder]: 2078/3581 cut-off events. [2023-08-30 08:13:02,146 INFO L131 PetriNetUnfolder]: For 591/591 co-relation queries the response was YES. [2023-08-30 08:13:02,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8206 conditions, 3581 events. 2078/3581 cut-off events. For 591/591 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 20351 event pairs, 305 based on Foata normal form. 0/3119 useless extension candidates. Maximal degree in co-relation 7784. Up to 2711 conditions per place. [2023-08-30 08:13:02,167 INFO L137 encePairwiseOnDemand]: 317/321 looper letters, 59 selfloop transitions, 4 changer transitions 0/65 dead transitions. [2023-08-30 08:13:02,167 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 65 transitions, 327 flow [2023-08-30 08:13:02,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:13:02,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:13:02,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 526 transitions. [2023-08-30 08:13:02,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5462097611630322 [2023-08-30 08:13:02,169 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 526 transitions. [2023-08-30 08:13:02,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 526 transitions. [2023-08-30 08:13:02,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:13:02,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 526 transitions. [2023-08-30 08:13:02,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:02,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 321.0) internal successors, (1284), 4 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:02,174 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 321.0) internal successors, (1284), 4 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:02,174 INFO L175 Difference]: Start difference. First operand has 47 places, 45 transitions, 138 flow. Second operand 3 states and 526 transitions. [2023-08-30 08:13:02,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 65 transitions, 327 flow [2023-08-30 08:13:02,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 65 transitions, 323 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:13:02,176 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 148 flow [2023-08-30 08:13:02,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2023-08-30 08:13:02,177 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 5 predicate places. [2023-08-30 08:13:02,177 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 148 flow [2023-08-30 08:13:02,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:02,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:13:02,178 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:13:02,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 08:13:02,178 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:13:02,179 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:13:02,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1971434167, now seen corresponding path program 1 times [2023-08-30 08:13:02,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:13:02,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228133517] [2023-08-30 08:13:02,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:13:02,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:13:02,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:13:02,257 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:13:02,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:13:02,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228133517] [2023-08-30 08:13:02,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228133517] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:13:02,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600118471] [2023-08-30 08:13:02,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:13:02,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:13:02,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:13:02,265 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 08:13:02,288 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 08:13:02,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:13:02,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 08:13:02,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:13:02,424 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:13:02,424 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 08:13:02,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600118471] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:13:02,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 08:13:02,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 08:13:02,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478631293] [2023-08-30 08:13:02,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:13:02,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 08:13:02,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:13:02,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 08:13:02,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 08:13:02,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 321 [2023-08-30 08:13:02,438 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 148 flow. Second operand has 4 states, 4 states have (on average 159.25) internal successors, (637), 4 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:02,438 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:13:02,438 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 321 [2023-08-30 08:13:02,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:13:02,791 INFO L130 PetriNetUnfolder]: 1922/3347 cut-off events. [2023-08-30 08:13:02,792 INFO L131 PetriNetUnfolder]: For 1405/1405 co-relation queries the response was YES. [2023-08-30 08:13:02,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7994 conditions, 3347 events. 1922/3347 cut-off events. For 1405/1405 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 18859 event pairs, 63 based on Foata normal form. 78/3055 useless extension candidates. Maximal degree in co-relation 7432. Up to 1710 conditions per place. [2023-08-30 08:13:02,807 INFO L137 encePairwiseOnDemand]: 318/321 looper letters, 92 selfloop transitions, 2 changer transitions 0/96 dead transitions. [2023-08-30 08:13:02,808 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 96 transitions, 488 flow [2023-08-30 08:13:02,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 08:13:02,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 08:13:02,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 715 transitions. [2023-08-30 08:13:02,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5568535825545171 [2023-08-30 08:13:02,810 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 715 transitions. [2023-08-30 08:13:02,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 715 transitions. [2023-08-30 08:13:02,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:13:02,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 715 transitions. [2023-08-30 08:13:02,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 178.75) internal successors, (715), 4 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:02,815 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:02,815 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:02,816 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 148 flow. Second operand 4 states and 715 transitions. [2023-08-30 08:13:02,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 96 transitions, 488 flow [2023-08-30 08:13:02,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 96 transitions, 484 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:13:02,819 INFO L231 Difference]: Finished difference. Result has 49 places, 44 transitions, 144 flow [2023-08-30 08:13:02,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=144, PETRI_PLACES=49, PETRI_TRANSITIONS=44} [2023-08-30 08:13:02,820 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 6 predicate places. [2023-08-30 08:13:02,820 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 44 transitions, 144 flow [2023-08-30 08:13:02,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 159.25) internal successors, (637), 4 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:02,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:13:02,821 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:13:02,829 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 08:13:03,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:13:03,027 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:13:03,027 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:13:03,027 INFO L85 PathProgramCache]: Analyzing trace with hash 2120644532, now seen corresponding path program 1 times [2023-08-30 08:13:03,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:13:03,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760380646] [2023-08-30 08:13:03,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:13:03,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:13:03,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:13:03,132 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:13:03,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:13:03,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760380646] [2023-08-30 08:13:03,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760380646] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:13:03,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141052449] [2023-08-30 08:13:03,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:13:03,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:13:03,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:13:03,135 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 08:13:03,167 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 08:13:03,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:13:03,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 08:13:03,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:13:03,275 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:13:03,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:13:03,323 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:13:03,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141052449] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:13:03,323 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:13:03,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-08-30 08:13:03,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480995671] [2023-08-30 08:13:03,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:13:03,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 08:13:03,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:13:03,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 08:13:03,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-08-30 08:13:03,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 321 [2023-08-30 08:13:03,413 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 44 transitions, 144 flow. Second operand has 10 states, 10 states have (on average 155.7) internal successors, (1557), 10 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:03,417 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:13:03,417 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 321 [2023-08-30 08:13:03,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:13:04,222 INFO L130 PetriNetUnfolder]: 3940/6517 cut-off events. [2023-08-30 08:13:04,222 INFO L131 PetriNetUnfolder]: For 2849/2849 co-relation queries the response was YES. [2023-08-30 08:13:04,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16253 conditions, 6517 events. 3940/6517 cut-off events. For 2849/2849 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 36306 event pairs, 613 based on Foata normal form. 94/5873 useless extension candidates. Maximal degree in co-relation 15484. Up to 2055 conditions per place. [2023-08-30 08:13:04,270 INFO L137 encePairwiseOnDemand]: 311/321 looper letters, 208 selfloop transitions, 34 changer transitions 3/247 dead transitions. [2023-08-30 08:13:04,271 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 247 transitions, 1334 flow [2023-08-30 08:13:04,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 08:13:04,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 08:13:04,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2361 transitions. [2023-08-30 08:13:04,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5253671562082777 [2023-08-30 08:13:04,277 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2361 transitions. [2023-08-30 08:13:04,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2361 transitions. [2023-08-30 08:13:04,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:13:04,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2361 transitions. [2023-08-30 08:13:04,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 168.64285714285714) internal successors, (2361), 14 states have internal predecessors, (2361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:04,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 321.0) internal successors, (4815), 15 states have internal predecessors, (4815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:04,293 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 321.0) internal successors, (4815), 15 states have internal predecessors, (4815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:04,294 INFO L175 Difference]: Start difference. First operand has 49 places, 44 transitions, 144 flow. Second operand 14 states and 2361 transitions. [2023-08-30 08:13:04,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 247 transitions, 1334 flow [2023-08-30 08:13:04,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 247 transitions, 1309 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 08:13:04,304 INFO L231 Difference]: Finished difference. Result has 65 places, 77 transitions, 379 flow [2023-08-30 08:13:04,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=379, PETRI_PLACES=65, PETRI_TRANSITIONS=77} [2023-08-30 08:13:04,305 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 22 predicate places. [2023-08-30 08:13:04,305 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 77 transitions, 379 flow [2023-08-30 08:13:04,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 155.7) internal successors, (1557), 10 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:04,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:13:04,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:13:04,311 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 08:13:04,511 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,SelfDestructingSolverStorable5 [2023-08-30 08:13:04,512 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:13:04,512 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:13:04,512 INFO L85 PathProgramCache]: Analyzing trace with hash -903934084, now seen corresponding path program 1 times [2023-08-30 08:13:04,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:13:04,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303957041] [2023-08-30 08:13:04,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:13:04,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:13:04,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:13:04,621 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 08:13:04,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:13:04,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303957041] [2023-08-30 08:13:04,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303957041] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:13:04,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:13:04,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 08:13:04,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229816174] [2023-08-30 08:13:04,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:13:04,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:13:04,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:13:04,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:13:04,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:13:04,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 321 [2023-08-30 08:13:04,647 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 77 transitions, 379 flow. Second operand has 3 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:04,647 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:13:04,647 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 321 [2023-08-30 08:13:04,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:13:04,885 INFO L130 PetriNetUnfolder]: 1387/2558 cut-off events. [2023-08-30 08:13:04,886 INFO L131 PetriNetUnfolder]: For 1843/1843 co-relation queries the response was YES. [2023-08-30 08:13:04,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7285 conditions, 2558 events. 1387/2558 cut-off events. For 1843/1843 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 13874 event pairs, 289 based on Foata normal form. 214/2700 useless extension candidates. Maximal degree in co-relation 6871. Up to 1848 conditions per place. [2023-08-30 08:13:04,901 INFO L137 encePairwiseOnDemand]: 313/321 looper letters, 57 selfloop transitions, 10 changer transitions 0/68 dead transitions. [2023-08-30 08:13:04,901 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 68 transitions, 439 flow [2023-08-30 08:13:04,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:13:04,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:13:04,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 515 transitions. [2023-08-30 08:13:04,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5347871235721703 [2023-08-30 08:13:04,903 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 515 transitions. [2023-08-30 08:13:04,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 515 transitions. [2023-08-30 08:13:04,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:13:04,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 515 transitions. [2023-08-30 08:13:04,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:04,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 321.0) internal successors, (1284), 4 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:04,907 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 321.0) internal successors, (1284), 4 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:04,907 INFO L175 Difference]: Start difference. First operand has 65 places, 77 transitions, 379 flow. Second operand 3 states and 515 transitions. [2023-08-30 08:13:04,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 68 transitions, 439 flow [2023-08-30 08:13:04,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 68 transitions, 421 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-08-30 08:13:04,922 INFO L231 Difference]: Finished difference. Result has 59 places, 57 transitions, 263 flow [2023-08-30 08:13:04,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=263, PETRI_PLACES=59, PETRI_TRANSITIONS=57} [2023-08-30 08:13:04,922 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 16 predicate places. [2023-08-30 08:13:04,923 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 57 transitions, 263 flow [2023-08-30 08:13:04,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:04,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:13:04,923 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:13:04,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 08:13:04,924 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:13:04,924 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:13:04,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1315385528, now seen corresponding path program 1 times [2023-08-30 08:13:04,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:13:04,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759436385] [2023-08-30 08:13:04,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:13:04,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:13:04,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:13:04,994 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:13:04,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:13:04,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759436385] [2023-08-30 08:13:04,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759436385] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:13:04,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379000979] [2023-08-30 08:13:04,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:13:04,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:13:04,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:13:04,997 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 08:13:05,038 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 08:13:05,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:13:05,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 08:13:05,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:13:05,140 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:13:05,140 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 08:13:05,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379000979] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:13:05,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 08:13:05,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-30 08:13:05,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164773146] [2023-08-30 08:13:05,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:13:05,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 08:13:05,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:13:05,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 08:13:05,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 08:13:05,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 321 [2023-08-30 08:13:05,170 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 57 transitions, 263 flow. Second operand has 5 states, 5 states have (on average 155.2) internal successors, (776), 5 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:05,171 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:13:05,171 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 321 [2023-08-30 08:13:05,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:13:05,501 INFO L130 PetriNetUnfolder]: 1398/2655 cut-off events. [2023-08-30 08:13:05,502 INFO L131 PetriNetUnfolder]: For 1694/1694 co-relation queries the response was YES. [2023-08-30 08:13:05,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7597 conditions, 2655 events. 1398/2655 cut-off events. For 1694/1694 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 14221 event pairs, 323 based on Foata normal form. 154/2725 useless extension candidates. Maximal degree in co-relation 4344. Up to 1448 conditions per place. [2023-08-30 08:13:05,513 INFO L137 encePairwiseOnDemand]: 311/321 looper letters, 86 selfloop transitions, 17 changer transitions 2/107 dead transitions. [2023-08-30 08:13:05,514 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 107 transitions, 669 flow [2023-08-30 08:13:05,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 08:13:05,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 08:13:05,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1006 transitions. [2023-08-30 08:13:05,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5223260643821391 [2023-08-30 08:13:05,517 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1006 transitions. [2023-08-30 08:13:05,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1006 transitions. [2023-08-30 08:13:05,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:13:05,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1006 transitions. [2023-08-30 08:13:05,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 167.66666666666666) internal successors, (1006), 6 states have internal predecessors, (1006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:05,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 321.0) internal successors, (2247), 7 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:05,523 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 321.0) internal successors, (2247), 7 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:05,523 INFO L175 Difference]: Start difference. First operand has 59 places, 57 transitions, 263 flow. Second operand 6 states and 1006 transitions. [2023-08-30 08:13:05,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 107 transitions, 669 flow [2023-08-30 08:13:05,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 107 transitions, 651 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:13:05,528 INFO L231 Difference]: Finished difference. Result has 66 places, 57 transitions, 328 flow [2023-08-30 08:13:05,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=328, PETRI_PLACES=66, PETRI_TRANSITIONS=57} [2023-08-30 08:13:05,530 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 23 predicate places. [2023-08-30 08:13:05,530 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 57 transitions, 328 flow [2023-08-30 08:13:05,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 155.2) internal successors, (776), 5 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:05,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:13:05,531 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-08-30 08:13:05,539 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 08:13:05,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:13:05,737 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:13:05,738 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:13:05,738 INFO L85 PathProgramCache]: Analyzing trace with hash -630645365, now seen corresponding path program 1 times [2023-08-30 08:13:05,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:13:05,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333920881] [2023-08-30 08:13:05,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:13:05,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:13:05,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:13:05,782 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 08:13:05,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:13:05,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333920881] [2023-08-30 08:13:05,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333920881] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:13:05,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:13:05,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:13:05,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874109495] [2023-08-30 08:13:05,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:13:05,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:13:05,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:13:05,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:13:05,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:13:05,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 321 [2023-08-30 08:13:05,792 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 57 transitions, 328 flow. Second operand has 3 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:05,792 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:13:05,792 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 321 [2023-08-30 08:13:05,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:13:06,002 INFO L130 PetriNetUnfolder]: 1264/2357 cut-off events. [2023-08-30 08:13:06,003 INFO L131 PetriNetUnfolder]: For 2226/2234 co-relation queries the response was YES. [2023-08-30 08:13:06,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7142 conditions, 2357 events. 1264/2357 cut-off events. For 2226/2234 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 12309 event pairs, 405 based on Foata normal form. 4/2315 useless extension candidates. Maximal degree in co-relation 5768. Up to 1381 conditions per place. [2023-08-30 08:13:06,014 INFO L137 encePairwiseOnDemand]: 317/321 looper letters, 76 selfloop transitions, 4 changer transitions 0/82 dead transitions. [2023-08-30 08:13:06,014 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 82 transitions, 614 flow [2023-08-30 08:13:06,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:13:06,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:13:06,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 524 transitions. [2023-08-30 08:13:06,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5441329179646937 [2023-08-30 08:13:06,016 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 524 transitions. [2023-08-30 08:13:06,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 524 transitions. [2023-08-30 08:13:06,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:13:06,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 524 transitions. [2023-08-30 08:13:06,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:06,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 321.0) internal successors, (1284), 4 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:06,020 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 321.0) internal successors, (1284), 4 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:06,020 INFO L175 Difference]: Start difference. First operand has 66 places, 57 transitions, 328 flow. Second operand 3 states and 524 transitions. [2023-08-30 08:13:06,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 82 transitions, 614 flow [2023-08-30 08:13:06,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 82 transitions, 588 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-08-30 08:13:06,028 INFO L231 Difference]: Finished difference. Result has 66 places, 57 transitions, 319 flow [2023-08-30 08:13:06,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=319, PETRI_PLACES=66, PETRI_TRANSITIONS=57} [2023-08-30 08:13:06,028 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 23 predicate places. [2023-08-30 08:13:06,029 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 57 transitions, 319 flow [2023-08-30 08:13:06,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:06,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:13:06,029 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-08-30 08:13:06,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 08:13:06,030 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:13:06,030 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:13:06,030 INFO L85 PathProgramCache]: Analyzing trace with hash -630645366, now seen corresponding path program 1 times [2023-08-30 08:13:06,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:13:06,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265294317] [2023-08-30 08:13:06,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:13:06,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:13:06,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:13:06,076 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:13:06,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:13:06,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265294317] [2023-08-30 08:13:06,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265294317] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:13:06,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:13:06,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:13:06,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086725989] [2023-08-30 08:13:06,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:13:06,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:13:06,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:13:06,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:13:06,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:13:06,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 321 [2023-08-30 08:13:06,086 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 57 transitions, 319 flow. Second operand has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:06,086 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:13:06,086 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 321 [2023-08-30 08:13:06,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:13:06,295 INFO L130 PetriNetUnfolder]: 1145/2110 cut-off events. [2023-08-30 08:13:06,295 INFO L131 PetriNetUnfolder]: For 2227/2235 co-relation queries the response was YES. [2023-08-30 08:13:06,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6538 conditions, 2110 events. 1145/2110 cut-off events. For 2227/2235 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 10429 event pairs, 405 based on Foata normal form. 48/2156 useless extension candidates. Maximal degree in co-relation 6052. Up to 2012 conditions per place. [2023-08-30 08:13:06,304 INFO L137 encePairwiseOnDemand]: 319/321 looper letters, 65 selfloop transitions, 1 changer transitions 0/68 dead transitions. [2023-08-30 08:13:06,304 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 68 transitions, 496 flow [2023-08-30 08:13:06,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:13:06,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:13:06,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 517 transitions. [2023-08-30 08:13:06,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5368639667705088 [2023-08-30 08:13:06,306 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 517 transitions. [2023-08-30 08:13:06,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 517 transitions. [2023-08-30 08:13:06,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:13:06,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 517 transitions. [2023-08-30 08:13:06,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.33333333333334) internal successors, (517), 3 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:06,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 321.0) internal successors, (1284), 4 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:06,310 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 321.0) internal successors, (1284), 4 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:06,310 INFO L175 Difference]: Start difference. First operand has 66 places, 57 transitions, 319 flow. Second operand 3 states and 517 transitions. [2023-08-30 08:13:06,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 68 transitions, 496 flow [2023-08-30 08:13:06,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 68 transitions, 492 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:13:06,315 INFO L231 Difference]: Finished difference. Result has 66 places, 56 transitions, 312 flow [2023-08-30 08:13:06,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=312, PETRI_PLACES=66, PETRI_TRANSITIONS=56} [2023-08-30 08:13:06,316 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 23 predicate places. [2023-08-30 08:13:06,316 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 56 transitions, 312 flow [2023-08-30 08:13:06,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:06,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:13:06,317 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:13:06,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 08:13:06,317 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:13:06,317 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:13:06,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1739711373, now seen corresponding path program 1 times [2023-08-30 08:13:06,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:13:06,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035288930] [2023-08-30 08:13:06,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:13:06,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:13:06,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:13:06,464 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:13:06,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:13:06,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035288930] [2023-08-30 08:13:06,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035288930] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:13:06,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971184855] [2023-08-30 08:13:06,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:13:06,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:13:06,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:13:06,468 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 08:13:06,488 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 08:13:06,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:13:06,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 08:13:06,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:13:06,619 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-30 08:13:06,619 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 08:13:06,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1971184855] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:13:06,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 08:13:06,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2023-08-30 08:13:06,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55495533] [2023-08-30 08:13:06,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:13:06,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 08:13:06,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:13:06,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 08:13:06,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-30 08:13:06,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 321 [2023-08-30 08:13:06,660 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 56 transitions, 312 flow. Second operand has 6 states, 6 states have (on average 150.83333333333334) internal successors, (905), 6 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:06,661 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:13:06,661 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 321 [2023-08-30 08:13:06,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:13:06,931 INFO L130 PetriNetUnfolder]: 1262/2319 cut-off events. [2023-08-30 08:13:06,931 INFO L131 PetriNetUnfolder]: For 2313/2313 co-relation queries the response was YES. [2023-08-30 08:13:06,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7035 conditions, 2319 events. 1262/2319 cut-off events. For 2313/2313 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 11546 event pairs, 275 based on Foata normal form. 28/2347 useless extension candidates. Maximal degree in co-relation 6788. Up to 1280 conditions per place. [2023-08-30 08:13:06,944 INFO L137 encePairwiseOnDemand]: 309/321 looper letters, 67 selfloop transitions, 25 changer transitions 0/94 dead transitions. [2023-08-30 08:13:06,945 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 94 transitions, 652 flow [2023-08-30 08:13:06,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 08:13:06,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 08:13:06,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1102 transitions. [2023-08-30 08:13:06,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49043168669336895 [2023-08-30 08:13:06,948 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1102 transitions. [2023-08-30 08:13:06,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1102 transitions. [2023-08-30 08:13:06,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:13:06,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1102 transitions. [2023-08-30 08:13:06,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 157.42857142857142) internal successors, (1102), 7 states have internal predecessors, (1102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:06,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:06,955 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:06,955 INFO L175 Difference]: Start difference. First operand has 66 places, 56 transitions, 312 flow. Second operand 7 states and 1102 transitions. [2023-08-30 08:13:06,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 94 transitions, 652 flow [2023-08-30 08:13:06,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 94 transitions, 651 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:13:06,962 INFO L231 Difference]: Finished difference. Result has 69 places, 59 transitions, 414 flow [2023-08-30 08:13:06,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=414, PETRI_PLACES=69, PETRI_TRANSITIONS=59} [2023-08-30 08:13:06,963 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 26 predicate places. [2023-08-30 08:13:06,963 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 59 transitions, 414 flow [2023-08-30 08:13:06,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 150.83333333333334) internal successors, (905), 6 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:06,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:13:06,963 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:13:06,969 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 08:13:07,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:13:07,169 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:13:07,169 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:13:07,169 INFO L85 PathProgramCache]: Analyzing trace with hash -832232940, now seen corresponding path program 1 times [2023-08-30 08:13:07,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:13:07,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657677355] [2023-08-30 08:13:07,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:13:07,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:13:07,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:13:07,290 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:13:07,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:13:07,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657677355] [2023-08-30 08:13:07,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657677355] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:13:07,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975295425] [2023-08-30 08:13:07,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:13:07,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:13:07,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:13:07,292 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 08:13:07,315 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 08:13:07,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:13:07,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 08:13:07,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:13:07,449 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-30 08:13:07,449 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 08:13:07,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975295425] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:13:07,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 08:13:07,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2023-08-30 08:13:07,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911499027] [2023-08-30 08:13:07,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:13:07,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 08:13:07,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:13:07,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 08:13:07,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-08-30 08:13:07,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 321 [2023-08-30 08:13:07,507 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 59 transitions, 414 flow. Second operand has 6 states, 6 states have (on average 150.83333333333334) internal successors, (905), 6 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:07,507 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:13:07,507 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 321 [2023-08-30 08:13:07,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:13:07,875 INFO L130 PetriNetUnfolder]: 1548/2845 cut-off events. [2023-08-30 08:13:07,875 INFO L131 PetriNetUnfolder]: For 3646/3646 co-relation queries the response was YES. [2023-08-30 08:13:07,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9184 conditions, 2845 events. 1548/2845 cut-off events. For 3646/3646 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 14023 event pairs, 389 based on Foata normal form. 44/2889 useless extension candidates. Maximal degree in co-relation 8733. Up to 1397 conditions per place. [2023-08-30 08:13:07,889 INFO L137 encePairwiseOnDemand]: 312/321 looper letters, 99 selfloop transitions, 13 changer transitions 10/124 dead transitions. [2023-08-30 08:13:07,890 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 124 transitions, 945 flow [2023-08-30 08:13:07,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 08:13:07,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 08:13:07,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1128 transitions. [2023-08-30 08:13:07,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5020026702269693 [2023-08-30 08:13:07,893 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1128 transitions. [2023-08-30 08:13:07,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1128 transitions. [2023-08-30 08:13:07,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:13:07,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1128 transitions. [2023-08-30 08:13:07,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 161.14285714285714) internal successors, (1128), 7 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:07,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:07,899 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:07,899 INFO L175 Difference]: Start difference. First operand has 69 places, 59 transitions, 414 flow. Second operand 7 states and 1128 transitions. [2023-08-30 08:13:07,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 124 transitions, 945 flow [2023-08-30 08:13:07,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 124 transitions, 921 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-08-30 08:13:07,909 INFO L231 Difference]: Finished difference. Result has 77 places, 67 transitions, 530 flow [2023-08-30 08:13:07,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=530, PETRI_PLACES=77, PETRI_TRANSITIONS=67} [2023-08-30 08:13:07,910 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 34 predicate places. [2023-08-30 08:13:07,910 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 67 transitions, 530 flow [2023-08-30 08:13:07,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 150.83333333333334) internal successors, (905), 6 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:07,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:13:07,911 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1] [2023-08-30 08:13:07,921 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 08:13:08,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-30 08:13:08,122 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:13:08,122 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:13:08,122 INFO L85 PathProgramCache]: Analyzing trace with hash 248467707, now seen corresponding path program 1 times [2023-08-30 08:13:08,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:13:08,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89578992] [2023-08-30 08:13:08,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:13:08,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:13:08,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:13:08,261 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:13:08,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:13:08,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89578992] [2023-08-30 08:13:08,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89578992] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:13:08,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146155201] [2023-08-30 08:13:08,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:13:08,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:13:08,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:13:08,264 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 08:13:08,283 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 08:13:08,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:13:08,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 08:13:08,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:13:08,430 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:13:08,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:13:08,519 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:13:08,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146155201] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:13:08,520 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:13:08,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-08-30 08:13:08,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090297245] [2023-08-30 08:13:08,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:13:08,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 08:13:08,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:13:08,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 08:13:08,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-08-30 08:13:08,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 321 [2023-08-30 08:13:08,638 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 67 transitions, 530 flow. Second operand has 18 states, 18 states have (on average 156.05555555555554) internal successors, (2809), 18 states have internal predecessors, (2809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:08,638 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:13:08,638 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 321 [2023-08-30 08:13:08,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:13:09,563 INFO L130 PetriNetUnfolder]: 2700/4965 cut-off events. [2023-08-30 08:13:09,563 INFO L131 PetriNetUnfolder]: For 8042/8042 co-relation queries the response was YES. [2023-08-30 08:13:09,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16247 conditions, 4965 events. 2700/4965 cut-off events. For 8042/8042 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 24589 event pairs, 579 based on Foata normal form. 144/5109 useless extension candidates. Maximal degree in co-relation 15519. Up to 1425 conditions per place. [2023-08-30 08:13:09,593 INFO L137 encePairwiseOnDemand]: 313/321 looper letters, 253 selfloop transitions, 39 changer transitions 4/298 dead transitions. [2023-08-30 08:13:09,593 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 298 transitions, 2180 flow [2023-08-30 08:13:09,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-30 08:13:09,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-30 08:13:09,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2845 transitions. [2023-08-30 08:13:09,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5213487264064505 [2023-08-30 08:13:09,602 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2845 transitions. [2023-08-30 08:13:09,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2845 transitions. [2023-08-30 08:13:09,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:13:09,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2845 transitions. [2023-08-30 08:13:09,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 167.35294117647058) internal successors, (2845), 17 states have internal predecessors, (2845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:09,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 321.0) internal successors, (5778), 18 states have internal predecessors, (5778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:09,633 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 321.0) internal successors, (5778), 18 states have internal predecessors, (5778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:09,633 INFO L175 Difference]: Start difference. First operand has 77 places, 67 transitions, 530 flow. Second operand 17 states and 2845 transitions. [2023-08-30 08:13:09,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 298 transitions, 2180 flow [2023-08-30 08:13:09,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 298 transitions, 2176 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-30 08:13:09,651 INFO L231 Difference]: Finished difference. Result has 98 places, 85 transitions, 851 flow [2023-08-30 08:13:09,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=851, PETRI_PLACES=98, PETRI_TRANSITIONS=85} [2023-08-30 08:13:09,652 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 55 predicate places. [2023-08-30 08:13:09,653 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 85 transitions, 851 flow [2023-08-30 08:13:09,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 156.05555555555554) internal successors, (2809), 18 states have internal predecessors, (2809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:09,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:13:09,654 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:13:09,663 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 08:13:09,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:13:09,860 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:13:09,860 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:13:09,860 INFO L85 PathProgramCache]: Analyzing trace with hash 814724820, now seen corresponding path program 1 times [2023-08-30 08:13:09,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:13:09,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873149534] [2023-08-30 08:13:09,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:13:09,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:13:09,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:13:10,086 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:13:10,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:13:10,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873149534] [2023-08-30 08:13:10,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873149534] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:13:10,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696872644] [2023-08-30 08:13:10,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:13:10,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:13:10,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:13:10,089 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:13:10,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 08:13:10,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:13:10,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 08:13:10,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:13:10,282 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:13:10,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:13:10,372 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:13:10,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696872644] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:13:10,372 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:13:10,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-08-30 08:13:10,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714483890] [2023-08-30 08:13:10,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:13:10,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 08:13:10,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:13:10,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 08:13:10,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2023-08-30 08:13:10,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 321 [2023-08-30 08:13:10,483 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 85 transitions, 851 flow. Second operand has 16 states, 16 states have (on average 150.125) internal successors, (2402), 16 states have internal predecessors, (2402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:10,483 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:13:10,483 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 321 [2023-08-30 08:13:10,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:13:11,302 INFO L130 PetriNetUnfolder]: 2968/5461 cut-off events. [2023-08-30 08:13:11,302 INFO L131 PetriNetUnfolder]: For 10940/10940 co-relation queries the response was YES. [2023-08-30 08:13:11,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18566 conditions, 5461 events. 2968/5461 cut-off events. For 10940/10940 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 27952 event pairs, 463 based on Foata normal form. 62/5523 useless extension candidates. Maximal degree in co-relation 17796. Up to 1424 conditions per place. [2023-08-30 08:13:11,331 INFO L137 encePairwiseOnDemand]: 310/321 looper letters, 131 selfloop transitions, 61 changer transitions 19/213 dead transitions. [2023-08-30 08:13:11,331 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 213 transitions, 1815 flow [2023-08-30 08:13:11,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 08:13:11,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 08:13:11,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2189 transitions. [2023-08-30 08:13:11,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4870939029817534 [2023-08-30 08:13:11,337 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2189 transitions. [2023-08-30 08:13:11,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2189 transitions. [2023-08-30 08:13:11,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:13:11,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2189 transitions. [2023-08-30 08:13:11,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 156.35714285714286) internal successors, (2189), 14 states have internal predecessors, (2189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:11,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 321.0) internal successors, (4815), 15 states have internal predecessors, (4815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:11,348 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 321.0) internal successors, (4815), 15 states have internal predecessors, (4815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:11,348 INFO L175 Difference]: Start difference. First operand has 98 places, 85 transitions, 851 flow. Second operand 14 states and 2189 transitions. [2023-08-30 08:13:11,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 213 transitions, 1815 flow [2023-08-30 08:13:11,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 213 transitions, 1734 flow, removed 33 selfloop flow, removed 5 redundant places. [2023-08-30 08:13:11,379 INFO L231 Difference]: Finished difference. Result has 107 places, 93 transitions, 1008 flow [2023-08-30 08:13:11,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=743, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1008, PETRI_PLACES=107, PETRI_TRANSITIONS=93} [2023-08-30 08:13:11,379 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 64 predicate places. [2023-08-30 08:13:11,380 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 93 transitions, 1008 flow [2023-08-30 08:13:11,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 150.125) internal successors, (2402), 16 states have internal predecessors, (2402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:11,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:13:11,381 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:13:11,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 08:13:11,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:13:11,586 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:13:11,586 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:13:11,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1439626184, now seen corresponding path program 2 times [2023-08-30 08:13:11,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:13:11,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853232733] [2023-08-30 08:13:11,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:13:11,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:13:11,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:13:11,785 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-30 08:13:11,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:13:11,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853232733] [2023-08-30 08:13:11,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853232733] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:13:11,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636906683] [2023-08-30 08:13:11,786 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 08:13:11,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:13:11,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:13:11,788 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:13:11,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 08:13:11,936 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 08:13:11,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 08:13:11,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 08:13:11,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:13:12,003 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-30 08:13:12,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:13:12,132 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-30 08:13:12,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636906683] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:13:12,133 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:13:12,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-08-30 08:13:12,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731594345] [2023-08-30 08:13:12,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:13:12,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-30 08:13:12,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:13:12,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-30 08:13:12,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2023-08-30 08:13:12,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 321 [2023-08-30 08:13:12,248 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 93 transitions, 1008 flow. Second operand has 20 states, 20 states have (on average 150.5) internal successors, (3010), 20 states have internal predecessors, (3010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:12,249 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:13:12,249 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 321 [2023-08-30 08:13:12,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:13:13,078 INFO L130 PetriNetUnfolder]: 3028/5493 cut-off events. [2023-08-30 08:13:13,078 INFO L131 PetriNetUnfolder]: For 12300/12300 co-relation queries the response was YES. [2023-08-30 08:13:13,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19855 conditions, 5493 events. 3028/5493 cut-off events. For 12300/12300 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 27532 event pairs, 377 based on Foata normal form. 56/5549 useless extension candidates. Maximal degree in co-relation 19067. Up to 1091 conditions per place. [2023-08-30 08:13:13,106 INFO L137 encePairwiseOnDemand]: 313/321 looper letters, 217 selfloop transitions, 77 changer transitions 7/303 dead transitions. [2023-08-30 08:13:13,106 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 303 transitions, 2651 flow [2023-08-30 08:13:13,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-30 08:13:13,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-30 08:13:13,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3738 transitions. [2023-08-30 08:13:13,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48520249221183803 [2023-08-30 08:13:13,114 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3738 transitions. [2023-08-30 08:13:13,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3738 transitions. [2023-08-30 08:13:13,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:13:13,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3738 transitions. [2023-08-30 08:13:13,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 155.75) internal successors, (3738), 24 states have internal predecessors, (3738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:13,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 321.0) internal successors, (8025), 25 states have internal predecessors, (8025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:13,131 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 321.0) internal successors, (8025), 25 states have internal predecessors, (8025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:13,131 INFO L175 Difference]: Start difference. First operand has 107 places, 93 transitions, 1008 flow. Second operand 24 states and 3738 transitions. [2023-08-30 08:13:13,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 303 transitions, 2651 flow [2023-08-30 08:13:13,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 303 transitions, 2489 flow, removed 59 selfloop flow, removed 6 redundant places. [2023-08-30 08:13:13,172 INFO L231 Difference]: Finished difference. Result has 125 places, 112 transitions, 1291 flow [2023-08-30 08:13:13,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=908, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1291, PETRI_PLACES=125, PETRI_TRANSITIONS=112} [2023-08-30 08:13:13,172 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 82 predicate places. [2023-08-30 08:13:13,173 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 112 transitions, 1291 flow [2023-08-30 08:13:13,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 150.5) internal successors, (3010), 20 states have internal predecessors, (3010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:13,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:13:13,174 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:13:13,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-30 08:13:13,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-30 08:13:13,383 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:13:13,384 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:13:13,384 INFO L85 PathProgramCache]: Analyzing trace with hash 610840954, now seen corresponding path program 3 times [2023-08-30 08:13:13,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:13:13,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606654867] [2023-08-30 08:13:13,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:13:13,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:13:13,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:13:13,678 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 08:13:13,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:13:13,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606654867] [2023-08-30 08:13:13,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606654867] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:13:13,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502852645] [2023-08-30 08:13:13,679 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 08:13:13,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:13:13,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:13:13,680 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:13:13,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 08:13:13,991 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-08-30 08:13:13,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 08:13:13,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-30 08:13:13,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:13:14,083 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 08:13:14,084 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:13:14,264 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 08:13:14,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502852645] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:13:14,265 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:13:14,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2023-08-30 08:13:14,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321787078] [2023-08-30 08:13:14,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:13:14,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-30 08:13:14,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:13:14,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-30 08:13:14,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=415, Unknown=0, NotChecked=0, Total=552 [2023-08-30 08:13:14,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 321 [2023-08-30 08:13:14,412 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 112 transitions, 1291 flow. Second operand has 24 states, 24 states have (on average 151.75) internal successors, (3642), 24 states have internal predecessors, (3642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:14,412 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:13:14,412 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 321 [2023-08-30 08:13:14,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:13:15,841 INFO L130 PetriNetUnfolder]: 4880/8821 cut-off events. [2023-08-30 08:13:15,841 INFO L131 PetriNetUnfolder]: For 20760/20760 co-relation queries the response was YES. [2023-08-30 08:13:15,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32070 conditions, 8821 events. 4880/8821 cut-off events. For 20760/20760 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 46704 event pairs, 557 based on Foata normal form. 98/8919 useless extension candidates. Maximal degree in co-relation 30961. Up to 1751 conditions per place. [2023-08-30 08:13:15,901 INFO L137 encePairwiseOnDemand]: 313/321 looper letters, 300 selfloop transitions, 127 changer transitions 9/438 dead transitions. [2023-08-30 08:13:15,901 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 438 transitions, 4016 flow [2023-08-30 08:13:15,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-08-30 08:13:15,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-08-30 08:13:15,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4727 transitions. [2023-08-30 08:13:15,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4908618899273105 [2023-08-30 08:13:15,908 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4727 transitions. [2023-08-30 08:13:15,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4727 transitions. [2023-08-30 08:13:15,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:13:15,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4727 transitions. [2023-08-30 08:13:15,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 157.56666666666666) internal successors, (4727), 30 states have internal predecessors, (4727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:15,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 321.0) internal successors, (9951), 31 states have internal predecessors, (9951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:15,930 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 321.0) internal successors, (9951), 31 states have internal predecessors, (9951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:15,931 INFO L175 Difference]: Start difference. First operand has 125 places, 112 transitions, 1291 flow. Second operand 30 states and 4727 transitions. [2023-08-30 08:13:15,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 438 transitions, 4016 flow [2023-08-30 08:13:15,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 438 transitions, 3906 flow, removed 10 selfloop flow, removed 8 redundant places. [2023-08-30 08:13:16,004 INFO L231 Difference]: Finished difference. Result has 151 places, 169 transitions, 2286 flow [2023-08-30 08:13:16,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=1213, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=2286, PETRI_PLACES=151, PETRI_TRANSITIONS=169} [2023-08-30 08:13:16,005 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 108 predicate places. [2023-08-30 08:13:16,005 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 169 transitions, 2286 flow [2023-08-30 08:13:16,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 151.75) internal successors, (3642), 24 states have internal predecessors, (3642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:16,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:13:16,006 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:13:16,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-30 08:13:16,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-30 08:13:16,212 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:13:16,213 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:13:16,213 INFO L85 PathProgramCache]: Analyzing trace with hash -587673403, now seen corresponding path program 1 times [2023-08-30 08:13:16,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:13:16,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841592062] [2023-08-30 08:13:16,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:13:16,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:13:16,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:13:16,598 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 103 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 08:13:16,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:13:16,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841592062] [2023-08-30 08:13:16,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841592062] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:13:16,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267362866] [2023-08-30 08:13:16,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:13:16,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:13:16,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:13:16,600 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:13:16,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-30 08:13:16,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:13:16,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 08:13:16,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:13:16,891 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 08:13:16,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:13:17,076 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 08:13:17,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267362866] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:13:17,077 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:13:17,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 20 [2023-08-30 08:13:17,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963943300] [2023-08-30 08:13:17,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:13:17,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-30 08:13:17,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:13:17,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-30 08:13:17,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2023-08-30 08:13:17,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 321 [2023-08-30 08:13:17,200 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 169 transitions, 2286 flow. Second operand has 22 states, 22 states have (on average 152.27272727272728) internal successors, (3350), 22 states have internal predecessors, (3350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:17,200 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:13:17,200 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 321 [2023-08-30 08:13:17,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:13:19,217 INFO L130 PetriNetUnfolder]: 7657/13804 cut-off events. [2023-08-30 08:13:19,217 INFO L131 PetriNetUnfolder]: For 40560/40560 co-relation queries the response was YES. [2023-08-30 08:13:19,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51238 conditions, 13804 events. 7657/13804 cut-off events. For 40560/40560 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 80948 event pairs, 981 based on Foata normal form. 118/13922 useless extension candidates. Maximal degree in co-relation 50093. Up to 2800 conditions per place. [2023-08-30 08:13:19,292 INFO L137 encePairwiseOnDemand]: 313/321 looper letters, 291 selfloop transitions, 235 changer transitions 7/535 dead transitions. [2023-08-30 08:13:19,292 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 535 transitions, 6178 flow [2023-08-30 08:13:19,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-08-30 08:13:19,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-08-30 08:13:19,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 4111 transitions. [2023-08-30 08:13:19,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4925712916367122 [2023-08-30 08:13:19,298 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 4111 transitions. [2023-08-30 08:13:19,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 4111 transitions. [2023-08-30 08:13:19,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:13:19,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 4111 transitions. [2023-08-30 08:13:19,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 158.1153846153846) internal successors, (4111), 26 states have internal predecessors, (4111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:19,315 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 321.0) internal successors, (8667), 27 states have internal predecessors, (8667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:19,316 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 321.0) internal successors, (8667), 27 states have internal predecessors, (8667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:19,317 INFO L175 Difference]: Start difference. First operand has 151 places, 169 transitions, 2286 flow. Second operand 26 states and 4111 transitions. [2023-08-30 08:13:19,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 535 transitions, 6178 flow [2023-08-30 08:13:19,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 535 transitions, 6074 flow, removed 9 selfloop flow, removed 11 redundant places. [2023-08-30 08:13:19,499 INFO L231 Difference]: Finished difference. Result has 171 places, 295 transitions, 4696 flow [2023-08-30 08:13:19,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=2217, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=4696, PETRI_PLACES=171, PETRI_TRANSITIONS=295} [2023-08-30 08:13:19,501 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 128 predicate places. [2023-08-30 08:13:19,501 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 295 transitions, 4696 flow [2023-08-30 08:13:19,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 152.27272727272728) internal successors, (3350), 22 states have internal predecessors, (3350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:19,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:13:19,502 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1] [2023-08-30 08:13:19,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-30 08:13:19,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-30 08:13:19,708 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:13:19,708 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:13:19,708 INFO L85 PathProgramCache]: Analyzing trace with hash -177530431, now seen corresponding path program 2 times [2023-08-30 08:13:19,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:13:19,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857139474] [2023-08-30 08:13:19,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:13:19,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:13:19,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:13:20,236 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 0 proven. 333 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:13:20,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:13:20,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857139474] [2023-08-30 08:13:20,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857139474] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:13:20,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124716462] [2023-08-30 08:13:20,236 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 08:13:20,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:13:20,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:13:20,241 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:13:20,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-30 08:13:20,452 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 08:13:20,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 08:13:20,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 662 conjuncts, 21 conjunts are in the unsatisfiable core [2023-08-30 08:13:20,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:13:20,571 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 0 proven. 333 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:13:20,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:13:20,986 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 0 proven. 333 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:13:20,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124716462] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:13:20,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:13:20,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 40 [2023-08-30 08:13:20,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174921175] [2023-08-30 08:13:20,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:13:20,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-08-30 08:13:20,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:13:20,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-08-30 08:13:20,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=462, Invalid=1260, Unknown=0, NotChecked=0, Total=1722 [2023-08-30 08:13:21,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 321 [2023-08-30 08:13:21,274 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 295 transitions, 4696 flow. Second operand has 42 states, 42 states have (on average 156.02380952380952) internal successors, (6553), 42 states have internal predecessors, (6553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:21,275 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:13:21,275 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 321 [2023-08-30 08:13:21,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:13:25,067 INFO L130 PetriNetUnfolder]: 9853/17826 cut-off events. [2023-08-30 08:13:25,068 INFO L131 PetriNetUnfolder]: For 68052/68052 co-relation queries the response was YES. [2023-08-30 08:13:25,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68802 conditions, 17826 events. 9853/17826 cut-off events. For 68052/68052 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 99014 event pairs, 2267 based on Foata normal form. 210/18036 useless extension candidates. Maximal degree in co-relation 66897. Up to 7919 conditions per place. [2023-08-30 08:13:25,176 INFO L137 encePairwiseOnDemand]: 314/321 looper letters, 636 selfloop transitions, 201 changer transitions 0/839 dead transitions. [2023-08-30 08:13:25,177 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 839 transitions, 9333 flow [2023-08-30 08:13:25,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-08-30 08:13:25,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2023-08-30 08:13:25,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 6796 transitions. [2023-08-30 08:13:25,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5163741357039738 [2023-08-30 08:13:25,188 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 6796 transitions. [2023-08-30 08:13:25,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 6796 transitions. [2023-08-30 08:13:25,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:13:25,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 6796 transitions. [2023-08-30 08:13:25,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 165.7560975609756) internal successors, (6796), 41 states have internal predecessors, (6796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:25,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 321.0) internal successors, (13482), 42 states have internal predecessors, (13482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:25,217 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 321.0) internal successors, (13482), 42 states have internal predecessors, (13482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:25,218 INFO L175 Difference]: Start difference. First operand has 171 places, 295 transitions, 4696 flow. Second operand 41 states and 6796 transitions. [2023-08-30 08:13:25,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 839 transitions, 9333 flow [2023-08-30 08:13:25,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 839 transitions, 9067 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-08-30 08:13:25,475 INFO L231 Difference]: Finished difference. Result has 217 places, 334 transitions, 5717 flow [2023-08-30 08:13:25,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=4427, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=5717, PETRI_PLACES=217, PETRI_TRANSITIONS=334} [2023-08-30 08:13:25,475 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 174 predicate places. [2023-08-30 08:13:25,475 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 334 transitions, 5717 flow [2023-08-30 08:13:25,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 156.02380952380952) internal successors, (6553), 42 states have internal predecessors, (6553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:25,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:13:25,476 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:13:25,481 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-08-30 08:13:25,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-30 08:13:25,677 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:13:25,677 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:13:25,678 INFO L85 PathProgramCache]: Analyzing trace with hash -381876131, now seen corresponding path program 4 times [2023-08-30 08:13:25,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:13:25,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467779017] [2023-08-30 08:13:25,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:13:25,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:13:25,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:13:26,277 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 08:13:26,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:13:26,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467779017] [2023-08-30 08:13:26,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467779017] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:13:26,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617754545] [2023-08-30 08:13:26,278 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 08:13:26,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:13:26,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:13:26,280 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:13:26,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-30 08:13:26,489 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 08:13:26,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 08:13:26,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 668 conjuncts, 21 conjunts are in the unsatisfiable core [2023-08-30 08:13:26,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:13:26,609 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 08:13:26,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:13:26,921 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 08:13:26,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617754545] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:13:26,921 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:13:26,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2023-08-30 08:13:26,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688863750] [2023-08-30 08:13:26,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:13:26,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-08-30 08:13:26,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:13:26,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-08-30 08:13:26,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=311, Invalid=949, Unknown=0, NotChecked=0, Total=1260 [2023-08-30 08:13:27,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 321 [2023-08-30 08:13:27,104 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 334 transitions, 5717 flow. Second operand has 36 states, 36 states have (on average 151.5) internal successors, (5454), 36 states have internal predecessors, (5454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:27,104 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:13:27,104 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 321 [2023-08-30 08:13:27,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:13:32,049 INFO L130 PetriNetUnfolder]: 13582/24535 cut-off events. [2023-08-30 08:13:32,050 INFO L131 PetriNetUnfolder]: For 115542/115542 co-relation queries the response was YES. [2023-08-30 08:13:32,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96223 conditions, 24535 events. 13582/24535 cut-off events. For 115542/115542 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 145801 event pairs, 1325 based on Foata normal form. 160/24695 useless extension candidates. Maximal degree in co-relation 94010. Up to 4961 conditions per place. [2023-08-30 08:13:32,200 INFO L137 encePairwiseOnDemand]: 313/321 looper letters, 491 selfloop transitions, 405 changer transitions 13/911 dead transitions. [2023-08-30 08:13:32,200 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 911 transitions, 11859 flow [2023-08-30 08:13:32,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-08-30 08:13:32,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2023-08-30 08:13:32,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 7251 transitions. [2023-08-30 08:13:32,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4910605444941081 [2023-08-30 08:13:32,210 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 7251 transitions. [2023-08-30 08:13:32,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 7251 transitions. [2023-08-30 08:13:32,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:13:32,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 7251 transitions. [2023-08-30 08:13:32,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 157.6304347826087) internal successors, (7251), 46 states have internal predecessors, (7251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:32,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 321.0) internal successors, (15087), 47 states have internal predecessors, (15087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:32,234 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 321.0) internal successors, (15087), 47 states have internal predecessors, (15087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:32,235 INFO L175 Difference]: Start difference. First operand has 217 places, 334 transitions, 5717 flow. Second operand 46 states and 7251 transitions. [2023-08-30 08:13:32,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 911 transitions, 11859 flow [2023-08-30 08:13:32,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 911 transitions, 11485 flow, removed 15 selfloop flow, removed 11 redundant places. [2023-08-30 08:13:32,545 INFO L231 Difference]: Finished difference. Result has 262 places, 477 transitions, 9094 flow [2023-08-30 08:13:32,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=5355, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=269, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=9094, PETRI_PLACES=262, PETRI_TRANSITIONS=477} [2023-08-30 08:13:32,545 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 219 predicate places. [2023-08-30 08:13:32,545 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 477 transitions, 9094 flow [2023-08-30 08:13:32,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 151.5) internal successors, (5454), 36 states have internal predecessors, (5454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:32,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:13:32,546 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:13:32,551 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-08-30 08:13:32,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:13:32,747 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:13:32,747 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:13:32,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1765890682, now seen corresponding path program 2 times [2023-08-30 08:13:32,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:13:32,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472904478] [2023-08-30 08:13:32,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:13:32,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:13:32,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:13:33,328 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 08:13:33,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:13:33,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472904478] [2023-08-30 08:13:33,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472904478] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:13:33,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55033940] [2023-08-30 08:13:33,329 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 08:13:33,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:13:33,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:13:33,334 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:13:33,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-30 08:13:33,527 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 08:13:33,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 08:13:33,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 712 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-30 08:13:33,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:13:33,654 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 08:13:33,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:13:33,919 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 08:13:33,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55033940] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:13:33,919 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:13:33,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2023-08-30 08:13:33,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301750824] [2023-08-30 08:13:33,919 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:13:33,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-08-30 08:13:33,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:13:33,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-08-30 08:13:33,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=868, Unknown=0, NotChecked=0, Total=1122 [2023-08-30 08:13:34,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 321 [2023-08-30 08:13:34,103 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 477 transitions, 9094 flow. Second operand has 34 states, 34 states have (on average 151.8235294117647) internal successors, (5162), 34 states have internal predecessors, (5162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:34,103 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:13:34,103 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 321 [2023-08-30 08:13:34,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:13:41,898 INFO L130 PetriNetUnfolder]: 19805/35752 cut-off events. [2023-08-30 08:13:41,898 INFO L131 PetriNetUnfolder]: For 185262/185262 co-relation queries the response was YES. [2023-08-30 08:13:42,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143980 conditions, 35752 events. 19805/35752 cut-off events. For 185262/185262 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 234650 event pairs, 2413 based on Foata normal form. 236/35988 useless extension candidates. Maximal degree in co-relation 141700. Up to 7332 conditions per place. [2023-08-30 08:13:42,249 INFO L137 encePairwiseOnDemand]: 313/321 looper letters, 459 selfloop transitions, 672 changer transitions 10/1143 dead transitions. [2023-08-30 08:13:42,250 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 1143 transitions, 18514 flow [2023-08-30 08:13:42,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-08-30 08:13:42,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2023-08-30 08:13:42,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 6173 transitions. [2023-08-30 08:13:42,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4930905024362968 [2023-08-30 08:13:42,259 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 6173 transitions. [2023-08-30 08:13:42,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 6173 transitions. [2023-08-30 08:13:42,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:13:42,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 6173 transitions. [2023-08-30 08:13:42,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 158.28205128205127) internal successors, (6173), 39 states have internal predecessors, (6173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:42,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 321.0) internal successors, (12840), 40 states have internal predecessors, (12840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:42,281 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 321.0) internal successors, (12840), 40 states have internal predecessors, (12840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:42,281 INFO L175 Difference]: Start difference. First operand has 262 places, 477 transitions, 9094 flow. Second operand 39 states and 6173 transitions. [2023-08-30 08:13:42,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 1143 transitions, 18514 flow [2023-08-30 08:13:43,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 1143 transitions, 18362 flow, removed 3 selfloop flow, removed 13 redundant places. [2023-08-30 08:13:43,223 INFO L231 Difference]: Finished difference. Result has 295 places, 753 transitions, 16265 flow [2023-08-30 08:13:43,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=8882, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=415, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=16265, PETRI_PLACES=295, PETRI_TRANSITIONS=753} [2023-08-30 08:13:43,224 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 252 predicate places. [2023-08-30 08:13:43,224 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 753 transitions, 16265 flow [2023-08-30 08:13:43,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 151.8235294117647) internal successors, (5162), 34 states have internal predecessors, (5162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:43,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:13:43,225 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:13:43,230 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-08-30 08:13:43,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2023-08-30 08:13:43,426 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:13:43,426 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:13:43,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1164475479, now seen corresponding path program 3 times [2023-08-30 08:13:43,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:13:43,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409958693] [2023-08-30 08:13:43,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:13:43,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:13:43,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:13:44,121 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 271 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-30 08:13:44,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:13:44,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409958693] [2023-08-30 08:13:44,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409958693] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:13:44,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499680916] [2023-08-30 08:13:44,122 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 08:13:44,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:13:44,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:13:44,125 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:13:44,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-30 08:13:44,513 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2023-08-30 08:13:44,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 08:13:44,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 756 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-30 08:13:44,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:13:44,643 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-30 08:13:44,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:13:44,941 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-30 08:13:44,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499680916] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:13:44,942 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:13:44,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 14] total 30 [2023-08-30 08:13:44,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155494815] [2023-08-30 08:13:44,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:13:44,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-30 08:13:44,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:13:44,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-30 08:13:44,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=783, Unknown=0, NotChecked=0, Total=992 [2023-08-30 08:13:45,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 321 [2023-08-30 08:13:45,137 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 753 transitions, 16265 flow. Second operand has 32 states, 32 states have (on average 152.1875) internal successors, (4870), 32 states have internal predecessors, (4870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:45,137 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:13:45,137 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 321 [2023-08-30 08:13:45,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:14:03,304 INFO L130 PetriNetUnfolder]: 37492/67765 cut-off events. [2023-08-30 08:14:03,304 INFO L131 PetriNetUnfolder]: For 407136/407136 co-relation queries the response was YES. [2023-08-30 08:14:03,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281007 conditions, 67765 events. 37492/67765 cut-off events. For 407136/407136 co-relation queries the response was YES. Maximal size of possible extension queue 620. Compared 483908 event pairs, 5219 based on Foata normal form. 132/67897 useless extension candidates. Maximal degree in co-relation 278645. Up to 14107 conditions per place. [2023-08-30 08:14:04,045 INFO L137 encePairwiseOnDemand]: 313/321 looper letters, 522 selfloop transitions, 1462 changer transitions 12/1998 dead transitions. [2023-08-30 08:14:04,045 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 1998 transitions, 41153 flow [2023-08-30 08:14:04,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-08-30 08:14:04,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2023-08-30 08:14:04,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 6146 transitions. [2023-08-30 08:14:04,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4909337806534068 [2023-08-30 08:14:04,052 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 6146 transitions. [2023-08-30 08:14:04,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 6146 transitions. [2023-08-30 08:14:04,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:14:04,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 6146 transitions. [2023-08-30 08:14:04,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 157.5897435897436) internal successors, (6146), 39 states have internal predecessors, (6146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:14:04,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 321.0) internal successors, (12840), 40 states have internal predecessors, (12840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:14:04,070 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 321.0) internal successors, (12840), 40 states have internal predecessors, (12840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:14:04,070 INFO L175 Difference]: Start difference. First operand has 295 places, 753 transitions, 16265 flow. Second operand 39 states and 6146 transitions. [2023-08-30 08:14:04,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 1998 transitions, 41153 flow [2023-08-30 08:14:07,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 1998 transitions, 40776 flow, removed 45 selfloop flow, removed 5 redundant places. [2023-08-30 08:14:07,137 INFO L231 Difference]: Finished difference. Result has 339 places, 1639 transitions, 40045 flow [2023-08-30 08:14:07,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=16112, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=753, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=689, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=40045, PETRI_PLACES=339, PETRI_TRANSITIONS=1639} [2023-08-30 08:14:07,138 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 296 predicate places. [2023-08-30 08:14:07,138 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 1639 transitions, 40045 flow [2023-08-30 08:14:07,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 152.1875) internal successors, (4870), 32 states have internal predecessors, (4870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:14:07,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:14:07,140 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:14:07,146 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-30 08:14:07,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:14:07,341 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:14:07,342 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:14:07,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1041082399, now seen corresponding path program 5 times [2023-08-30 08:14:07,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:14:07,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77960352] [2023-08-30 08:14:07,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:14:07,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:14:07,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:14:08,216 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 08:14:08,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:14:08,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77960352] [2023-08-30 08:14:08,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77960352] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:14:08,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747628599] [2023-08-30 08:14:08,217 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 08:14:08,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:14:08,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:14:08,218 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:14:08,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-30 08:14:08,808 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2023-08-30 08:14:08,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 08:14:08,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 900 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-30 08:14:08,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:14:08,964 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 08:14:08,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:14:09,557 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 08:14:09,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747628599] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:14:09,557 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:14:09,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 50 [2023-08-30 08:14:09,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547401320] [2023-08-30 08:14:09,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:14:09,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-08-30 08:14:09,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:14:09,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-08-30 08:14:09,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=655, Invalid=1997, Unknown=0, NotChecked=0, Total=2652 [2023-08-30 08:14:09,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 321 [2023-08-30 08:14:09,829 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 1639 transitions, 40045 flow. Second operand has 52 states, 52 states have (on average 151.34615384615384) internal successors, (7870), 52 states have internal predecessors, (7870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:14:09,829 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:14:09,830 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 321 [2023-08-30 08:14:09,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:14:44,721 INFO L130 PetriNetUnfolder]: 45162/81567 cut-off events. [2023-08-30 08:14:44,721 INFO L131 PetriNetUnfolder]: For 654528/654528 co-relation queries the response was YES. [2023-08-30 08:14:45,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354235 conditions, 81567 events. 45162/81567 cut-off events. For 654528/654528 co-relation queries the response was YES. Maximal size of possible extension queue 699. Compared 600494 event pairs, 8613 based on Foata normal form. 314/81881 useless extension candidates. Maximal degree in co-relation 351275. Up to 22407 conditions per place. [2023-08-30 08:14:45,732 INFO L137 encePairwiseOnDemand]: 313/321 looper letters, 1053 selfloop transitions, 1542 changer transitions 18/2615 dead transitions. [2023-08-30 08:14:45,733 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 2615 transitions, 56154 flow [2023-08-30 08:14:45,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2023-08-30 08:14:45,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2023-08-30 08:14:45,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 10567 transitions. [2023-08-30 08:14:45,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49132840470544475 [2023-08-30 08:14:45,742 INFO L72 ComplementDD]: Start complementDD. Operand 67 states and 10567 transitions. [2023-08-30 08:14:45,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 67 states and 10567 transitions. [2023-08-30 08:14:45,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:14:45,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 67 states and 10567 transitions. [2023-08-30 08:14:45,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 68 states, 67 states have (on average 157.71641791044777) internal successors, (10567), 67 states have internal predecessors, (10567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:14:45,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 68 states, 68 states have (on average 321.0) internal successors, (21828), 68 states have internal predecessors, (21828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:14:45,776 INFO L81 ComplementDD]: Finished complementDD. Result has 68 states, 68 states have (on average 321.0) internal successors, (21828), 68 states have internal predecessors, (21828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:14:45,776 INFO L175 Difference]: Start difference. First operand has 339 places, 1639 transitions, 40045 flow. Second operand 67 states and 10567 transitions. [2023-08-30 08:14:45,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 2615 transitions, 56154 flow [2023-08-30 08:14:51,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 2615 transitions, 55497 flow, removed 78 selfloop flow, removed 12 redundant places. [2023-08-30 08:14:51,392 INFO L231 Difference]: Finished difference. Result has 412 places, 1935 transitions, 52081 flow [2023-08-30 08:14:51,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=39168, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1627, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1255, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=67, PETRI_FLOW=52081, PETRI_PLACES=412, PETRI_TRANSITIONS=1935} [2023-08-30 08:14:51,394 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 369 predicate places. [2023-08-30 08:14:51,394 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 1935 transitions, 52081 flow [2023-08-30 08:14:51,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 151.34615384615384) internal successors, (7870), 52 states have internal predecessors, (7870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:14:51,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:14:51,395 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:14:51,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-30 08:14:51,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:14:51,596 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:14:51,596 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:14:51,597 INFO L85 PathProgramCache]: Analyzing trace with hash 121488872, now seen corresponding path program 4 times [2023-08-30 08:14:51,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:14:51,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390446855] [2023-08-30 08:14:51,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:14:51,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:14:51,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:14:52,406 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 08:14:52,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:14:52,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390446855] [2023-08-30 08:14:52,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390446855] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:14:52,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212142327] [2023-08-30 08:14:52,407 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 08:14:52,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:14:52,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:14:52,409 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:14:52,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-30 08:14:52,677 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 08:14:52,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 08:14:52,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 944 conjuncts, 31 conjunts are in the unsatisfiable core [2023-08-30 08:14:52,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:14:52,814 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 08:14:52,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:14:53,286 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 08:14:53,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212142327] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:14:53,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:14:53,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 48 [2023-08-30 08:14:53,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808287135] [2023-08-30 08:14:53,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:14:53,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-08-30 08:14:53,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:14:53,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-08-30 08:14:53,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=566, Invalid=1884, Unknown=0, NotChecked=0, Total=2450 [2023-08-30 08:14:53,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 321 [2023-08-30 08:14:53,518 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 1935 transitions, 52081 flow. Second operand has 50 states, 50 states have (on average 151.56) internal successors, (7578), 50 states have internal predecessors, (7578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:14:53,518 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:14:53,518 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 321 [2023-08-30 08:14:53,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:15:51,473 INFO L130 PetriNetUnfolder]: 61468/111107 cut-off events. [2023-08-30 08:15:51,474 INFO L131 PetriNetUnfolder]: For 1048376/1048376 co-relation queries the response was YES. [2023-08-30 08:15:53,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 501725 conditions, 111107 events. 61468/111107 cut-off events. For 1048376/1048376 co-relation queries the response was YES. Maximal size of possible extension queue 893. Compared 864200 event pairs, 8001 based on Foata normal form. 612/111719 useless extension candidates. Maximal degree in co-relation 498530. Up to 23275 conditions per place. [2023-08-30 08:15:53,303 INFO L137 encePairwiseOnDemand]: 313/321 looper letters, 786 selfloop transitions, 2475 changer transitions 15/3278 dead transitions. [2023-08-30 08:15:53,304 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 3278 transitions, 81509 flow [2023-08-30 08:15:53,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-08-30 08:15:53,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2023-08-30 08:15:53,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 9490 transitions. [2023-08-30 08:15:53,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49273104880581514 [2023-08-30 08:15:53,313 INFO L72 ComplementDD]: Start complementDD. Operand 60 states and 9490 transitions. [2023-08-30 08:15:53,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 9490 transitions. [2023-08-30 08:15:53,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:15:53,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 60 states and 9490 transitions. [2023-08-30 08:15:53,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 61 states, 60 states have (on average 158.16666666666666) internal successors, (9490), 60 states have internal predecessors, (9490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:15:53,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 61 states, 61 states have (on average 321.0) internal successors, (19581), 61 states have internal predecessors, (19581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:15:53,339 INFO L81 ComplementDD]: Finished complementDD. Result has 61 states, 61 states have (on average 321.0) internal successors, (19581), 61 states have internal predecessors, (19581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:15:53,339 INFO L175 Difference]: Start difference. First operand has 412 places, 1935 transitions, 52081 flow. Second operand 60 states and 9490 transitions. [2023-08-30 08:15:53,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 3278 transitions, 81509 flow [2023-08-30 08:16:05,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 3278 transitions, 80947 flow, removed 48 selfloop flow, removed 16 redundant places. [2023-08-30 08:16:05,670 INFO L231 Difference]: Finished difference. Result has 475 places, 2639 transitions, 78753 flow [2023-08-30 08:16:05,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=51117, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1915, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1785, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=60, PETRI_FLOW=78753, PETRI_PLACES=475, PETRI_TRANSITIONS=2639} [2023-08-30 08:16:05,672 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 432 predicate places. [2023-08-30 08:16:05,672 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 2639 transitions, 78753 flow [2023-08-30 08:16:05,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 151.56) internal successors, (7578), 50 states have internal predecessors, (7578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:16:05,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:16:05,673 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:16:05,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-30 08:16:05,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-08-30 08:16:05,880 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:16:05,880 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:16:05,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1184934048, now seen corresponding path program 5 times [2023-08-30 08:16:05,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:16:05,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146283703] [2023-08-30 08:16:05,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:16:05,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:16:05,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:16:06,643 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 08:16:06,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:16:06,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146283703] [2023-08-30 08:16:06,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146283703] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:16:06,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32002935] [2023-08-30 08:16:06,644 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 08:16:06,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:16:06,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:16:06,645 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:16:06,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-30 08:16:07,543 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2023-08-30 08:16:07,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 08:16:07,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 944 conjuncts, 31 conjunts are in the unsatisfiable core [2023-08-30 08:16:07,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:16:07,686 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 08:16:07,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:16:08,149 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 08:16:08,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32002935] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:16:08,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:16:08,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 48 [2023-08-30 08:16:08,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558872094] [2023-08-30 08:16:08,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:16:08,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-08-30 08:16:08,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:16:08,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-08-30 08:16:08,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=566, Invalid=1884, Unknown=0, NotChecked=0, Total=2450 [2023-08-30 08:16:08,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 321 [2023-08-30 08:16:08,377 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 2639 transitions, 78753 flow. Second operand has 50 states, 50 states have (on average 151.56) internal successors, (7578), 50 states have internal predecessors, (7578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:16:08,378 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:16:08,378 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 321 [2023-08-30 08:16:08,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:18:00,772 INFO L130 PetriNetUnfolder]: 89242/161105 cut-off events. [2023-08-30 08:18:00,772 INFO L131 PetriNetUnfolder]: For 1811690/1811690 co-relation queries the response was YES. [2023-08-30 08:18:03,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 760568 conditions, 161105 events. 89242/161105 cut-off events. For 1811690/1811690 co-relation queries the response was YES. Maximal size of possible extension queue 1333. Compared 1332344 event pairs, 9775 based on Foata normal form. 394/161499 useless extension candidates. Maximal degree in co-relation 757244. Up to 33757 conditions per place. [2023-08-30 08:18:03,866 INFO L137 encePairwiseOnDemand]: 313/321 looper letters, 1028 selfloop transitions, 3598 changer transitions 21/4649 dead transitions. [2023-08-30 08:18:03,866 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 4649 transitions, 132394 flow [2023-08-30 08:18:03,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2023-08-30 08:18:03,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2023-08-30 08:18:03,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 10378 transitions. [2023-08-30 08:18:03,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4898517889172095 [2023-08-30 08:18:03,876 INFO L72 ComplementDD]: Start complementDD. Operand 66 states and 10378 transitions. [2023-08-30 08:18:03,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 10378 transitions. [2023-08-30 08:18:03,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:18:03,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 66 states and 10378 transitions. [2023-08-30 08:18:03,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 67 states, 66 states have (on average 157.24242424242425) internal successors, (10378), 66 states have internal predecessors, (10378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:18:03,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 67 states, 67 states have (on average 321.0) internal successors, (21507), 67 states have internal predecessors, (21507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:18:03,906 INFO L81 ComplementDD]: Finished complementDD. Result has 67 states, 67 states have (on average 321.0) internal successors, (21507), 67 states have internal predecessors, (21507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:18:03,906 INFO L175 Difference]: Start difference. First operand has 475 places, 2639 transitions, 78753 flow. Second operand 66 states and 10378 transitions. [2023-08-30 08:18:03,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 540 places, 4649 transitions, 132394 flow [2023-08-30 08:18:35,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 532 places, 4649 transitions, 131334 flow, removed 167 selfloop flow, removed 8 redundant places. [2023-08-30 08:18:35,341 INFO L231 Difference]: Finished difference. Result has 551 places, 4046 transitions, 131742 flow [2023-08-30 08:18:35,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=77387, PETRI_DIFFERENCE_MINUEND_PLACES=467, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2617, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2334, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=66, PETRI_FLOW=131742, PETRI_PLACES=551, PETRI_TRANSITIONS=4046} [2023-08-30 08:18:35,344 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 508 predicate places. [2023-08-30 08:18:35,344 INFO L495 AbstractCegarLoop]: Abstraction has has 551 places, 4046 transitions, 131742 flow [2023-08-30 08:18:35,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 151.56) internal successors, (7578), 50 states have internal predecessors, (7578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:18:35,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:18:35,346 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:18:35,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-30 08:18:35,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:18:35,554 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:18:35,554 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:18:35,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1245887221, now seen corresponding path program 6 times [2023-08-30 08:18:35,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:18:35,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358324705] [2023-08-30 08:18:35,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:18:35,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:18:35,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:18:36,367 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 0 proven. 589 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-30 08:18:36,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:18:36,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358324705] [2023-08-30 08:18:36,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358324705] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:18:36,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783297809] [2023-08-30 08:18:36,367 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 08:18:36,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:18:36,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:18:36,368 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:18:36,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-30 08:18:38,678 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2023-08-30 08:18:38,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 08:18:38,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 988 conjuncts, 33 conjunts are in the unsatisfiable core [2023-08-30 08:18:38,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:18:38,830 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 0 proven. 589 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-30 08:18:38,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:18:39,259 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 0 proven. 589 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-30 08:18:39,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783297809] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:18:39,260 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:18:39,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 46 [2023-08-30 08:18:39,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359305593] [2023-08-30 08:18:39,260 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:18:39,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-08-30 08:18:39,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:18:39,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-08-30 08:18:39,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=489, Invalid=1767, Unknown=0, NotChecked=0, Total=2256 [2023-08-30 08:18:39,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 321 [2023-08-30 08:18:39,457 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 551 places, 4046 transitions, 131742 flow. Second operand has 48 states, 48 states have (on average 151.79166666666666) internal successors, (7286), 48 states have internal predecessors, (7286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:18:39,457 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:18:39,457 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 321 [2023-08-30 08:18:39,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:23:26,193 INFO L130 PetriNetUnfolder]: 141789/256154 cut-off events. [2023-08-30 08:23:26,193 INFO L131 PetriNetUnfolder]: For 3299798/3299798 co-relation queries the response was YES. [2023-08-30 08:23:31,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1260158 conditions, 256154 events. 141789/256154 cut-off events. For 3299798/3299798 co-relation queries the response was YES. Maximal size of possible extension queue 1925. Compared 2255474 event pairs, 15501 based on Foata normal form. 688/256842 useless extension candidates. Maximal degree in co-relation 1256705. Up to 53848 conditions per place. [2023-08-30 08:23:31,782 INFO L137 encePairwiseOnDemand]: 313/321 looper letters, 855 selfloop transitions, 6330 changer transitions 18/7205 dead transitions. [2023-08-30 08:23:31,783 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 609 places, 7205 transitions, 234207 flow [2023-08-30 08:23:31,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2023-08-30 08:23:31,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2023-08-30 08:23:31,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 9297 transitions. [2023-08-30 08:23:31,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4908918105496594 [2023-08-30 08:23:31,788 INFO L72 ComplementDD]: Start complementDD. Operand 59 states and 9297 transitions. [2023-08-30 08:23:31,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 59 states and 9297 transitions. [2023-08-30 08:23:31,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:23:31,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 59 states and 9297 transitions. [2023-08-30 08:23:31,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 60 states, 59 states have (on average 157.57627118644066) internal successors, (9297), 59 states have internal predecessors, (9297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:23:31,807 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 60 states, 60 states have (on average 321.0) internal successors, (19260), 60 states have internal predecessors, (19260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:23:31,809 INFO L81 ComplementDD]: Finished complementDD. Result has 60 states, 60 states have (on average 321.0) internal successors, (19260), 60 states have internal predecessors, (19260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:23:31,809 INFO L175 Difference]: Start difference. First operand has 551 places, 4046 transitions, 131742 flow. Second operand 59 states and 9297 transitions. [2023-08-30 08:23:31,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 609 places, 7205 transitions, 234207 flow [2023-08-30 08:25:05,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 585 places, 7205 transitions, 230162 flow, removed 1326 selfloop flow, removed 24 redundant places. [2023-08-30 08:25:05,861 INFO L231 Difference]: Finished difference. Result has 600 places, 6630 transitions, 232886 flow [2023-08-30 08:25:05,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=128367, PETRI_DIFFERENCE_MINUEND_PLACES=527, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4013, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3877, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=59, PETRI_FLOW=232886, PETRI_PLACES=600, PETRI_TRANSITIONS=6630} [2023-08-30 08:25:05,865 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 557 predicate places. [2023-08-30 08:25:05,865 INFO L495 AbstractCegarLoop]: Abstraction has has 600 places, 6630 transitions, 232886 flow [2023-08-30 08:25:05,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 151.79166666666666) internal successors, (7286), 48 states have internal predecessors, (7286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:25:05,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:25:05,866 INFO L208 CegarLoopForPetriNet]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:25:05,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-30 08:25:06,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:25:06,066 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:25:06,067 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:25:06,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1233603376, now seen corresponding path program 7 times [2023-08-30 08:25:06,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:25:06,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176965297] [2023-08-30 08:25:06,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:25:06,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:25:06,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:25:07,218 INFO L134 CoverageAnalysis]: Checked inductivity of 940 backedges. 0 proven. 916 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-30 08:25:07,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:25:07,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176965297] [2023-08-30 08:25:07,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176965297] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:25:07,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237030313] [2023-08-30 08:25:07,219 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-30 08:25:07,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:25:07,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:25:07,220 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:25:07,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-30 08:25:07,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:25:07,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 1162 conjuncts, 39 conjunts are in the unsatisfiable core [2023-08-30 08:25:07,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:25:07,683 INFO L134 CoverageAnalysis]: Checked inductivity of 940 backedges. 0 proven. 916 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-30 08:25:07,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:25:08,334 INFO L134 CoverageAnalysis]: Checked inductivity of 940 backedges. 0 proven. 916 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-30 08:25:08,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237030313] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:25:08,334 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:25:08,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 58 [2023-08-30 08:25:08,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612066535] [2023-08-30 08:25:08,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:25:08,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2023-08-30 08:25:08,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:25:08,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2023-08-30 08:25:08,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=783, Invalid=2757, Unknown=0, NotChecked=0, Total=3540 [2023-08-30 08:25:08,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 321 [2023-08-30 08:25:08,619 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 600 places, 6630 transitions, 232886 flow. Second operand has 60 states, 60 states have (on average 151.63333333333333) internal successors, (9098), 60 states have internal predecessors, (9098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:25:08,619 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:25:08,619 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 321 [2023-08-30 08:25:08,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Killed by 15