/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.error.function.in.sv-comp.mode false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/pthread/stack-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:28:30,551 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:28:30,553 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:28:30,580 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 11:28:30,580 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 11:28:30,581 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 11:28:30,582 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 11:28:30,584 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 11:28:30,585 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 11:28:30,586 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 11:28:30,587 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 11:28:30,588 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 11:28:30,588 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:28:30,589 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:28:30,590 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:28:30,591 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:28:30,592 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:28:30,592 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:28:30,594 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:28:30,595 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:28:30,597 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:28:30,598 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:28:30,599 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:28:30,599 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:28:30,602 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 11:28:30,603 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 11:28:30,603 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 11:28:30,604 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 11:28:30,604 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 11:28:30,605 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 11:28:30,605 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 11:28:30,605 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 11:28:30,606 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 11:28:30,607 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 11:28:30,608 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 11:28:30,608 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 11:28:30,608 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 11:28:30,609 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 11:28:30,609 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:28:30,609 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:28:30,610 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:28:30,614 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-09-16 11:28:30,643 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:28:30,643 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:28:30,644 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:28:30,644 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:28:30,645 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:28:30,645 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:28:30,645 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:28:30,645 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:28:30,645 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:28:30,645 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:28:30,646 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:28:30,646 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:28:30,646 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:28:30,647 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:28:30,647 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:28:30,647 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:28:30,647 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:28:30,647 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:28:30,647 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:28:30,647 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:28:30,647 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:28:30,647 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:28:30,648 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:28:30,648 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:28:30,648 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:28:30,648 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:28:30,648 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:28:30,648 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:28:30,648 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:28:30,648 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:28:30,649 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 11:28:30,649 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:28:30,913 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:28:30,934 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:28:30,937 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:28:30,938 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:28:30,938 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:28:30,939 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack-2.i [2022-09-16 11:28:31,001 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f395fb118/dfa41c1d30ea475da42d2e1f8b489615/FLAGf0407160b [2022-09-16 11:28:31,513 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:28:31,514 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack-2.i [2022-09-16 11:28:31,532 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f395fb118/dfa41c1d30ea475da42d2e1f8b489615/FLAGf0407160b [2022-09-16 11:28:31,825 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f395fb118/dfa41c1d30ea475da42d2e1f8b489615 [2022-09-16 11:28:31,827 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:28:31,828 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:28:31,829 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:28:31,829 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:28:31,832 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:28:31,833 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:28:31" (1/1) ... [2022-09-16 11:28:31,833 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@415b79ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:28:31, skipping insertion in model container [2022-09-16 11:28:31,834 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:28:31" (1/1) ... [2022-09-16 11:28:31,841 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:28:31,892 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:28:32,277 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack-2.i[41520,41533] [2022-09-16 11:28:32,310 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:28:32,320 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:28:32,358 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack-2.i[41520,41533] [2022-09-16 11:28:32,374 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:28:32,422 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:28:32,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:28:32 WrapperNode [2022-09-16 11:28:32,423 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:28:32,424 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:28:32,424 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:28:32,424 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:28:32,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:28:32" (1/1) ... [2022-09-16 11:28:32,462 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:28:32" (1/1) ... [2022-09-16 11:28:32,487 INFO L138 Inliner]: procedures = 277, calls = 46, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 169 [2022-09-16 11:28:32,488 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:28:32,488 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:28:32,489 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:28:32,489 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:28:32,495 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:28:32" (1/1) ... [2022-09-16 11:28:32,496 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:28:32" (1/1) ... [2022-09-16 11:28:32,500 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:28:32" (1/1) ... [2022-09-16 11:28:32,500 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:28:32" (1/1) ... [2022-09-16 11:28:32,505 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:28:32" (1/1) ... [2022-09-16 11:28:32,523 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:28:32" (1/1) ... [2022-09-16 11:28:32,525 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:28:32" (1/1) ... [2022-09-16 11:28:32,527 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:28:32,528 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:28:32,528 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:28:32,528 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:28:32,529 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:28:32" (1/1) ... [2022-09-16 11:28:32,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:28:32,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:28:32,577 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) [2022-09-16 11:28:32,595 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 [2022-09-16 11:28:32,620 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-09-16 11:28:32,620 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-09-16 11:28:32,620 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-09-16 11:28:32,620 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-09-16 11:28:32,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:28:32,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:28:32,621 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 11:28:32,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:28:32,621 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-09-16 11:28:32,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:28:32,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:28:32,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:28:32,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:28:32,623 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-16 11:28:32,803 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:28:32,804 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:28:33,114 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:28:33,125 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:28:33,125 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-09-16 11:28:33,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:28:33 BoogieIcfgContainer [2022-09-16 11:28:33,127 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:28:33,129 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:28:33,129 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:28:33,135 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:28:33,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:28:31" (1/3) ... [2022-09-16 11:28:33,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fc2b825 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:28:33, skipping insertion in model container [2022-09-16 11:28:33,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:28:32" (2/3) ... [2022-09-16 11:28:33,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fc2b825 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:28:33, skipping insertion in model container [2022-09-16 11:28:33,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:28:33" (3/3) ... [2022-09-16 11:28:33,139 INFO L112 eAbstractionObserver]: Analyzing ICFG stack-2.i [2022-09-16 11:28:33,154 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:28:33,154 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-09-16 11:28:33,154 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:28:33,301 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-09-16 11:28:33,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 196 places, 199 transitions, 414 flow [2022-09-16 11:28:33,456 INFO L130 PetriNetUnfolder]: 10/197 cut-off events. [2022-09-16 11:28:33,457 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-09-16 11:28:33,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 197 events. 10/197 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 503 event pairs, 0 based on Foata normal form. 0/179 useless extension candidates. Maximal degree in co-relation 149. Up to 3 conditions per place. [2022-09-16 11:28:33,495 INFO L82 GeneralOperation]: Start removeDead. Operand has 196 places, 199 transitions, 414 flow [2022-09-16 11:28:33,500 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 184 places, 187 transitions, 383 flow [2022-09-16 11:28:33,508 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:28:33,515 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=false, 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;@2194784d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:28:33,515 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-09-16 11:28:33,542 INFO L130 PetriNetUnfolder]: 3/83 cut-off events. [2022-09-16 11:28:33,543 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-09-16 11:28:33,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:28:33,544 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:28:33,544 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-09-16 11:28:33,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:28:33,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1396840529, now seen corresponding path program 1 times [2022-09-16 11:28:33,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:28:33,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932706460] [2022-09-16 11:28:33,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:28:33,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:28:33,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:28:33,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:28:33,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:28:33,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932706460] [2022-09-16 11:28:33,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932706460] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:28:33,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:28:33,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:28:33,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635676915] [2022-09-16 11:28:33,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:28:33,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:28:33,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:28:33,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:28:33,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:28:33,900 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 199 [2022-09-16 11:28:33,913 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 187 transitions, 383 flow. Second operand has 4 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) [2022-09-16 11:28:33,913 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:28:33,913 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 199 [2022-09-16 11:28:33,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:28:34,091 INFO L130 PetriNetUnfolder]: 28/369 cut-off events. [2022-09-16 11:28:34,091 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2022-09-16 11:28:34,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 447 conditions, 369 events. 28/369 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1640 event pairs, 10 based on Foata normal form. 41/375 useless extension candidates. Maximal degree in co-relation 394. Up to 36 conditions per place. [2022-09-16 11:28:34,100 INFO L137 encePairwiseOnDemand]: 187/199 looper letters, 19 selfloop transitions, 4 changer transitions 0/187 dead transitions. [2022-09-16 11:28:34,101 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 187 transitions, 438 flow [2022-09-16 11:28:34,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:28:34,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:28:34,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 927 transitions. [2022-09-16 11:28:34,125 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9316582914572864 [2022-09-16 11:28:34,126 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 927 transitions. [2022-09-16 11:28:34,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 927 transitions. [2022-09-16 11:28:34,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:28:34,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 927 transitions. [2022-09-16 11:28:34,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 185.4) internal successors, (927), 5 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:34,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 199.0) internal successors, (1194), 6 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:34,153 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 199.0) internal successors, (1194), 6 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:34,154 INFO L175 Difference]: Start difference. First operand has 184 places, 187 transitions, 383 flow. Second operand 5 states and 927 transitions. [2022-09-16 11:28:34,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 187 transitions, 438 flow [2022-09-16 11:28:34,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 187 transitions, 427 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 11:28:34,166 INFO L231 Difference]: Finished difference. Result has 184 places, 181 transitions, 392 flow [2022-09-16 11:28:34,168 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=392, PETRI_PLACES=184, PETRI_TRANSITIONS=181} [2022-09-16 11:28:34,171 INFO L287 CegarLoopForPetriNet]: 184 programPoint places, 0 predicate places. [2022-09-16 11:28:34,172 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 181 transitions, 392 flow [2022-09-16 11:28:34,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 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) [2022-09-16 11:28:34,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:28:34,173 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:28:34,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:28:34,174 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-09-16 11:28:34,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:28:34,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1438698054, now seen corresponding path program 1 times [2022-09-16 11:28:34,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:28:34,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147053753] [2022-09-16 11:28:34,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:28:34,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:28:34,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:28:34,296 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:28:34,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:28:34,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147053753] [2022-09-16 11:28:34,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147053753] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:28:34,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:28:34,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:28:34,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898863981] [2022-09-16 11:28:34,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:28:34,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:28:34,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:28:34,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:28:34,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:28:34,301 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 199 [2022-09-16 11:28:34,302 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 181 transitions, 392 flow. Second operand has 4 states, 4 states have (on average 180.25) internal successors, (721), 4 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:34,302 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:28:34,302 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 199 [2022-09-16 11:28:34,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:28:34,399 INFO L130 PetriNetUnfolder]: 23/272 cut-off events. [2022-09-16 11:28:34,401 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2022-09-16 11:28:34,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 355 conditions, 272 events. 23/272 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1082 event pairs, 3 based on Foata normal form. 2/255 useless extension candidates. Maximal degree in co-relation 301. Up to 21 conditions per place. [2022-09-16 11:28:34,407 INFO L137 encePairwiseOnDemand]: 193/199 looper letters, 12 selfloop transitions, 8 changer transitions 0/184 dead transitions. [2022-09-16 11:28:34,412 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 184 transitions, 439 flow [2022-09-16 11:28:34,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:28:34,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:28:34,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 903 transitions. [2022-09-16 11:28:34,415 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.907537688442211 [2022-09-16 11:28:34,415 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 903 transitions. [2022-09-16 11:28:34,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 903 transitions. [2022-09-16 11:28:34,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:28:34,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 903 transitions. [2022-09-16 11:28:34,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 180.6) internal successors, (903), 5 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:34,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 199.0) internal successors, (1194), 6 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:34,421 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 199.0) internal successors, (1194), 6 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:34,421 INFO L175 Difference]: Start difference. First operand has 184 places, 181 transitions, 392 flow. Second operand 5 states and 903 transitions. [2022-09-16 11:28:34,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 184 transitions, 439 flow [2022-09-16 11:28:34,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 184 transitions, 437 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:28:34,428 INFO L231 Difference]: Finished difference. Result has 187 places, 181 transitions, 410 flow [2022-09-16 11:28:34,428 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=410, PETRI_PLACES=187, PETRI_TRANSITIONS=181} [2022-09-16 11:28:34,429 INFO L287 CegarLoopForPetriNet]: 184 programPoint places, 3 predicate places. [2022-09-16 11:28:34,429 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 181 transitions, 410 flow [2022-09-16 11:28:34,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 180.25) internal successors, (721), 4 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:34,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:28:34,431 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:28:34,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-16 11:28:34,431 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-09-16 11:28:34,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:28:34,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1649967282, now seen corresponding path program 1 times [2022-09-16 11:28:34,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:28:34,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008307079] [2022-09-16 11:28:34,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:28:34,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:28:34,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:28:34,539 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:28:34,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:28:34,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008307079] [2022-09-16 11:28:34,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008307079] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:28:34,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853303790] [2022-09-16 11:28:34,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:28:34,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:28:34,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:28:34,547 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) [2022-09-16 11:28:34,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-09-16 11:28:34,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:28:34,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:28:34,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:28:34,768 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:28:34,768 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:28:34,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853303790] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:28:34,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:28:34,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:28:34,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325386743] [2022-09-16 11:28:34,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:28:34,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:28:34,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:28:34,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:28:34,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:28:34,775 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 199 [2022-09-16 11:28:34,777 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 181 transitions, 410 flow. Second operand has 6 states, 6 states have (on average 179.33333333333334) internal successors, (1076), 6 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:34,777 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:28:34,777 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 199 [2022-09-16 11:28:34,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:28:34,922 INFO L130 PetriNetUnfolder]: 24/317 cut-off events. [2022-09-16 11:28:34,922 INFO L131 PetriNetUnfolder]: For 46/46 co-relation queries the response was YES. [2022-09-16 11:28:34,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 415 conditions, 317 events. 24/317 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1239 event pairs, 2 based on Foata normal form. 2/295 useless extension candidates. Maximal degree in co-relation 361. Up to 15 conditions per place. [2022-09-16 11:28:34,927 INFO L137 encePairwiseOnDemand]: 194/199 looper letters, 17 selfloop transitions, 6 changer transitions 0/187 dead transitions. [2022-09-16 11:28:34,927 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 187 transitions, 471 flow [2022-09-16 11:28:34,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:28:34,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:28:34,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1263 transitions. [2022-09-16 11:28:34,931 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9066762383345298 [2022-09-16 11:28:34,931 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1263 transitions. [2022-09-16 11:28:34,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1263 transitions. [2022-09-16 11:28:34,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:28:34,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1263 transitions. [2022-09-16 11:28:34,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 180.42857142857142) internal successors, (1263), 7 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:34,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 199.0) internal successors, (1592), 8 states have internal predecessors, (1592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:34,938 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 199.0) internal successors, (1592), 8 states have internal predecessors, (1592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:34,939 INFO L175 Difference]: Start difference. First operand has 187 places, 181 transitions, 410 flow. Second operand 7 states and 1263 transitions. [2022-09-16 11:28:34,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 187 transitions, 471 flow [2022-09-16 11:28:34,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 187 transitions, 459 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 11:28:34,946 INFO L231 Difference]: Finished difference. Result has 189 places, 180 transitions, 406 flow [2022-09-16 11:28:34,947 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=406, PETRI_PLACES=189, PETRI_TRANSITIONS=180} [2022-09-16 11:28:34,949 INFO L287 CegarLoopForPetriNet]: 184 programPoint places, 5 predicate places. [2022-09-16 11:28:34,949 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 180 transitions, 406 flow [2022-09-16 11:28:34,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 179.33333333333334) internal successors, (1076), 6 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:34,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:28:34,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:28:34,981 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-09-16 11:28:35,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:28:35,168 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-09-16 11:28:35,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:28:35,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1901729374, now seen corresponding path program 1 times [2022-09-16 11:28:35,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:28:35,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207531377] [2022-09-16 11:28:35,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:28:35,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:28:35,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:28:35,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:28:35,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:28:35,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207531377] [2022-09-16 11:28:35,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207531377] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:28:35,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:28:35,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:28:35,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322097956] [2022-09-16 11:28:35,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:28:35,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-16 11:28:35,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:28:35,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-16 11:28:35,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-09-16 11:28:35,242 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 199 [2022-09-16 11:28:35,244 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 180 transitions, 406 flow. Second operand has 5 states, 5 states have (on average 170.2) internal successors, (851), 5 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:35,244 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:28:35,244 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 199 [2022-09-16 11:28:35,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:28:35,753 INFO L130 PetriNetUnfolder]: 379/2575 cut-off events. [2022-09-16 11:28:35,753 INFO L131 PetriNetUnfolder]: For 218/218 co-relation queries the response was YES. [2022-09-16 11:28:35,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3526 conditions, 2575 events. 379/2575 cut-off events. For 218/218 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 21460 event pairs, 140 based on Foata normal form. 0/2266 useless extension candidates. Maximal degree in co-relation 2622. Up to 347 conditions per place. [2022-09-16 11:28:35,776 INFO L137 encePairwiseOnDemand]: 190/199 looper letters, 58 selfloop transitions, 13 changer transitions 1/229 dead transitions. [2022-09-16 11:28:35,776 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 229 transitions, 656 flow [2022-09-16 11:28:35,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-16 11:28:35,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-16 11:28:35,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1421 transitions. [2022-09-16 11:28:35,780 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8925879396984925 [2022-09-16 11:28:35,780 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1421 transitions. [2022-09-16 11:28:35,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1421 transitions. [2022-09-16 11:28:35,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:28:35,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1421 transitions. [2022-09-16 11:28:35,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 177.625) internal successors, (1421), 8 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:35,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 199.0) internal successors, (1791), 9 states have internal predecessors, (1791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:35,796 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 199.0) internal successors, (1791), 9 states have internal predecessors, (1791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:35,796 INFO L175 Difference]: Start difference. First operand has 189 places, 180 transitions, 406 flow. Second operand 8 states and 1421 transitions. [2022-09-16 11:28:35,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 229 transitions, 656 flow [2022-09-16 11:28:35,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 229 transitions, 645 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-09-16 11:28:35,805 INFO L231 Difference]: Finished difference. Result has 197 places, 191 transitions, 493 flow [2022-09-16 11:28:35,805 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=493, PETRI_PLACES=197, PETRI_TRANSITIONS=191} [2022-09-16 11:28:35,807 INFO L287 CegarLoopForPetriNet]: 184 programPoint places, 13 predicate places. [2022-09-16 11:28:35,807 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 191 transitions, 493 flow [2022-09-16 11:28:35,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 170.2) internal successors, (851), 5 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:35,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:28:35,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:28:35,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-16 11:28:35,808 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-09-16 11:28:35,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:28:35,809 INFO L85 PathProgramCache]: Analyzing trace with hash -23226816, now seen corresponding path program 1 times [2022-09-16 11:28:35,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:28:35,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308717037] [2022-09-16 11:28:35,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:28:35,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:28:35,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:28:35,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:28:35,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:28:35,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308717037] [2022-09-16 11:28:35,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308717037] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:28:35,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:28:35,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:28:35,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909522434] [2022-09-16 11:28:35,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:28:35,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:28:35,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:28:35,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:28:35,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:28:35,902 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 199 [2022-09-16 11:28:35,903 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 191 transitions, 493 flow. Second operand has 4 states, 4 states have (on average 173.75) internal successors, (695), 4 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:35,903 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:28:35,903 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 199 [2022-09-16 11:28:35,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:28:36,238 INFO L130 PetriNetUnfolder]: 226/2048 cut-off events. [2022-09-16 11:28:36,239 INFO L131 PetriNetUnfolder]: For 401/493 co-relation queries the response was YES. [2022-09-16 11:28:36,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3123 conditions, 2048 events. 226/2048 cut-off events. For 401/493 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 15540 event pairs, 118 based on Foata normal form. 22/1861 useless extension candidates. Maximal degree in co-relation 2357. Up to 335 conditions per place. [2022-09-16 11:28:36,259 INFO L137 encePairwiseOnDemand]: 193/199 looper letters, 33 selfloop transitions, 6 changer transitions 0/207 dead transitions. [2022-09-16 11:28:36,260 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 207 transitions, 616 flow [2022-09-16 11:28:36,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:28:36,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:28:36,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 899 transitions. [2022-09-16 11:28:36,262 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9035175879396985 [2022-09-16 11:28:36,263 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 899 transitions. [2022-09-16 11:28:36,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 899 transitions. [2022-09-16 11:28:36,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:28:36,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 899 transitions. [2022-09-16 11:28:36,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 179.8) internal successors, (899), 5 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:36,267 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 199.0) internal successors, (1194), 6 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:36,268 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 199.0) internal successors, (1194), 6 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:36,268 INFO L175 Difference]: Start difference. First operand has 197 places, 191 transitions, 493 flow. Second operand 5 states and 899 transitions. [2022-09-16 11:28:36,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 207 transitions, 616 flow [2022-09-16 11:28:36,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 207 transitions, 616 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-16 11:28:36,274 INFO L231 Difference]: Finished difference. Result has 204 places, 193 transitions, 527 flow [2022-09-16 11:28:36,275 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=493, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=527, PETRI_PLACES=204, PETRI_TRANSITIONS=193} [2022-09-16 11:28:36,277 INFO L287 CegarLoopForPetriNet]: 184 programPoint places, 20 predicate places. [2022-09-16 11:28:36,278 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 193 transitions, 527 flow [2022-09-16 11:28:36,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 173.75) internal successors, (695), 4 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:36,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:28:36,278 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:28:36,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-16 11:28:36,279 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-09-16 11:28:36,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:28:36,279 INFO L85 PathProgramCache]: Analyzing trace with hash 710642219, now seen corresponding path program 1 times [2022-09-16 11:28:36,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:28:36,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564238186] [2022-09-16 11:28:36,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:28:36,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:28:36,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:28:36,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:28:36,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:28:36,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564238186] [2022-09-16 11:28:36,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564238186] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:28:36,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:28:36,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:28:36,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603746919] [2022-09-16 11:28:36,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:28:36,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:28:36,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:28:36,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:28:36,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:28:36,383 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 199 [2022-09-16 11:28:36,383 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 193 transitions, 527 flow. Second operand has 4 states, 4 states have (on average 178.5) internal successors, (714), 4 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:36,383 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:28:36,383 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 199 [2022-09-16 11:28:36,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:28:36,622 INFO L130 PetriNetUnfolder]: 74/1332 cut-off events. [2022-09-16 11:28:36,622 INFO L131 PetriNetUnfolder]: For 232/291 co-relation queries the response was YES. [2022-09-16 11:28:36,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1906 conditions, 1332 events. 74/1332 cut-off events. For 232/291 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 8476 event pairs, 19 based on Foata normal form. 2/1232 useless extension candidates. Maximal degree in co-relation 1491. Up to 102 conditions per place. [2022-09-16 11:28:36,638 INFO L137 encePairwiseOnDemand]: 192/199 looper letters, 19 selfloop transitions, 4 changer transitions 0/202 dead transitions. [2022-09-16 11:28:36,638 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 202 transitions, 597 flow [2022-09-16 11:28:36,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:28:36,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:28:36,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 911 transitions. [2022-09-16 11:28:36,641 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9155778894472362 [2022-09-16 11:28:36,641 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 911 transitions. [2022-09-16 11:28:36,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 911 transitions. [2022-09-16 11:28:36,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:28:36,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 911 transitions. [2022-09-16 11:28:36,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 182.2) internal successors, (911), 5 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:36,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 199.0) internal successors, (1194), 6 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:36,646 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 199.0) internal successors, (1194), 6 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:36,647 INFO L175 Difference]: Start difference. First operand has 204 places, 193 transitions, 527 flow. Second operand 5 states and 911 transitions. [2022-09-16 11:28:36,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 202 transitions, 597 flow [2022-09-16 11:28:36,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 202 transitions, 595 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:28:36,654 INFO L231 Difference]: Finished difference. Result has 210 places, 196 transitions, 557 flow [2022-09-16 11:28:36,654 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=525, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=557, PETRI_PLACES=210, PETRI_TRANSITIONS=196} [2022-09-16 11:28:36,657 INFO L287 CegarLoopForPetriNet]: 184 programPoint places, 26 predicate places. [2022-09-16 11:28:36,657 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 196 transitions, 557 flow [2022-09-16 11:28:36,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 178.5) internal successors, (714), 4 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:36,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:28:36,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:28:36,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-16 11:28:36,658 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-09-16 11:28:36,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:28:36,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1530513119, now seen corresponding path program 1 times [2022-09-16 11:28:36,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:28:36,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867555682] [2022-09-16 11:28:36,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:28:36,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:28:36,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:28:36,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:28:36,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:28:36,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867555682] [2022-09-16 11:28:36,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867555682] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:28:36,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:28:36,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:28:36,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555365191] [2022-09-16 11:28:36,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:28:36,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:28:36,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:28:36,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:28:36,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:28:36,753 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 199 [2022-09-16 11:28:36,754 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 196 transitions, 557 flow. Second operand has 3 states, 3 states have (on average 180.66666666666666) internal successors, (542), 3 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:36,754 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:28:36,754 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 199 [2022-09-16 11:28:36,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:28:36,925 INFO L130 PetriNetUnfolder]: 47/1176 cut-off events. [2022-09-16 11:28:36,926 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2022-09-16 11:28:36,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1562 conditions, 1176 events. 47/1176 cut-off events. For 129/129 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 6465 event pairs, 12 based on Foata normal form. 12/1132 useless extension candidates. Maximal degree in co-relation 1400. Up to 42 conditions per place. [2022-09-16 11:28:36,936 INFO L137 encePairwiseOnDemand]: 195/199 looper letters, 12 selfloop transitions, 4 changer transitions 0/195 dead transitions. [2022-09-16 11:28:36,936 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 195 transitions, 574 flow [2022-09-16 11:28:36,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:28:36,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:28:36,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 549 transitions. [2022-09-16 11:28:36,939 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9195979899497487 [2022-09-16 11:28:36,939 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 549 transitions. [2022-09-16 11:28:36,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 549 transitions. [2022-09-16 11:28:36,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:28:36,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 549 transitions. [2022-09-16 11:28:36,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 183.0) internal successors, (549), 3 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:36,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 199.0) internal successors, (796), 4 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:36,944 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 199.0) internal successors, (796), 4 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:36,944 INFO L175 Difference]: Start difference. First operand has 210 places, 196 transitions, 557 flow. Second operand 3 states and 549 transitions. [2022-09-16 11:28:36,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 195 transitions, 574 flow [2022-09-16 11:28:36,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 195 transitions, 566 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-09-16 11:28:36,950 INFO L231 Difference]: Finished difference. Result has 209 places, 193 transitions, 535 flow [2022-09-16 11:28:36,951 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=527, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=535, PETRI_PLACES=209, PETRI_TRANSITIONS=193} [2022-09-16 11:28:36,951 INFO L287 CegarLoopForPetriNet]: 184 programPoint places, 25 predicate places. [2022-09-16 11:28:36,952 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 193 transitions, 535 flow [2022-09-16 11:28:36,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.66666666666666) internal successors, (542), 3 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:36,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:28:36,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:28:36,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-16 11:28:36,953 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-09-16 11:28:36,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:28:36,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1476438524, now seen corresponding path program 1 times [2022-09-16 11:28:36,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:28:36,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54505336] [2022-09-16 11:28:36,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:28:36,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:28:36,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:28:37,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:28:37,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:28:37,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54505336] [2022-09-16 11:28:37,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54505336] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:28:37,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:28:37,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:28:37,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010072046] [2022-09-16 11:28:37,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:28:37,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:28:37,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:28:37,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:28:37,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:28:37,052 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 199 [2022-09-16 11:28:37,053 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 193 transitions, 535 flow. Second operand has 6 states, 6 states have (on average 168.5) internal successors, (1011), 6 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:37,053 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:28:37,054 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 199 [2022-09-16 11:28:37,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:28:37,330 INFO L130 PetriNetUnfolder]: 101/1489 cut-off events. [2022-09-16 11:28:37,330 INFO L131 PetriNetUnfolder]: For 189/189 co-relation queries the response was YES. [2022-09-16 11:28:37,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2233 conditions, 1489 events. 101/1489 cut-off events. For 189/189 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 8782 event pairs, 36 based on Foata normal form. 6/1429 useless extension candidates. Maximal degree in co-relation 1372. Up to 143 conditions per place. [2022-09-16 11:28:37,342 INFO L137 encePairwiseOnDemand]: 190/199 looper letters, 51 selfloop transitions, 9 changer transitions 0/223 dead transitions. [2022-09-16 11:28:37,343 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 223 transitions, 738 flow [2022-09-16 11:28:37,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-16 11:28:37,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-16 11:28:37,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1389 transitions. [2022-09-16 11:28:37,346 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8724874371859297 [2022-09-16 11:28:37,347 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1389 transitions. [2022-09-16 11:28:37,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1389 transitions. [2022-09-16 11:28:37,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:28:37,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1389 transitions. [2022-09-16 11:28:37,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 173.625) internal successors, (1389), 8 states have internal predecessors, (1389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:37,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 199.0) internal successors, (1791), 9 states have internal predecessors, (1791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:37,354 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 199.0) internal successors, (1791), 9 states have internal predecessors, (1791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:37,354 INFO L175 Difference]: Start difference. First operand has 209 places, 193 transitions, 535 flow. Second operand 8 states and 1389 transitions. [2022-09-16 11:28:37,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 223 transitions, 738 flow [2022-09-16 11:28:37,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 223 transitions, 734 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:28:37,361 INFO L231 Difference]: Finished difference. Result has 218 places, 197 transitions, 582 flow [2022-09-16 11:28:37,361 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=531, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=582, PETRI_PLACES=218, PETRI_TRANSITIONS=197} [2022-09-16 11:28:37,363 INFO L287 CegarLoopForPetriNet]: 184 programPoint places, 34 predicate places. [2022-09-16 11:28:37,364 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 197 transitions, 582 flow [2022-09-16 11:28:37,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 168.5) internal successors, (1011), 6 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:37,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:28:37,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:28:37,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-16 11:28:37,365 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-09-16 11:28:37,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:28:37,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1105581795, now seen corresponding path program 1 times [2022-09-16 11:28:37,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:28:37,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361553276] [2022-09-16 11:28:37,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:28:37,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:28:37,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:28:37,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:28:37,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:28:37,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361553276] [2022-09-16 11:28:37,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361553276] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:28:37,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:28:37,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:28:37,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968434862] [2022-09-16 11:28:37,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:28:37,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:28:37,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:28:37,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:28:37,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:28:37,459 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 199 [2022-09-16 11:28:37,461 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 197 transitions, 582 flow. Second operand has 6 states, 6 states have (on average 168.66666666666666) internal successors, (1012), 6 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:37,461 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:28:37,461 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 199 [2022-09-16 11:28:37,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:28:37,839 INFO L130 PetriNetUnfolder]: 150/2151 cut-off events. [2022-09-16 11:28:37,840 INFO L131 PetriNetUnfolder]: For 399/399 co-relation queries the response was YES. [2022-09-16 11:28:37,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3321 conditions, 2151 events. 150/2151 cut-off events. For 399/399 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 14378 event pairs, 41 based on Foata normal form. 8/2080 useless extension candidates. Maximal degree in co-relation 2729. Up to 199 conditions per place. [2022-09-16 11:28:37,859 INFO L137 encePairwiseOnDemand]: 189/199 looper letters, 53 selfloop transitions, 14 changer transitions 0/230 dead transitions. [2022-09-16 11:28:37,859 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 230 transitions, 835 flow [2022-09-16 11:28:37,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-16 11:28:37,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-16 11:28:37,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1388 transitions. [2022-09-16 11:28:37,863 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.871859296482412 [2022-09-16 11:28:37,863 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1388 transitions. [2022-09-16 11:28:37,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1388 transitions. [2022-09-16 11:28:37,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:28:37,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1388 transitions. [2022-09-16 11:28:37,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 173.5) internal successors, (1388), 8 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:37,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 199.0) internal successors, (1791), 9 states have internal predecessors, (1791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:37,871 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 199.0) internal successors, (1791), 9 states have internal predecessors, (1791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:37,871 INFO L175 Difference]: Start difference. First operand has 218 places, 197 transitions, 582 flow. Second operand 8 states and 1388 transitions. [2022-09-16 11:28:37,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 230 transitions, 835 flow [2022-09-16 11:28:37,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 230 transitions, 827 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 11:28:37,877 INFO L231 Difference]: Finished difference. Result has 226 places, 206 transitions, 696 flow [2022-09-16 11:28:37,878 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=574, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=696, PETRI_PLACES=226, PETRI_TRANSITIONS=206} [2022-09-16 11:28:37,878 INFO L287 CegarLoopForPetriNet]: 184 programPoint places, 42 predicate places. [2022-09-16 11:28:37,879 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 206 transitions, 696 flow [2022-09-16 11:28:37,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 168.66666666666666) internal successors, (1012), 6 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:37,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:28:37,880 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:28:37,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-16 11:28:37,880 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-09-16 11:28:37,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:28:37,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1972740275, now seen corresponding path program 1 times [2022-09-16 11:28:37,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:28:37,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815000155] [2022-09-16 11:28:37,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:28:37,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:28:37,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:28:37,953 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:28:37,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:28:37,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815000155] [2022-09-16 11:28:37,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815000155] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:28:37,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788232317] [2022-09-16 11:28:37,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:28:37,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:28:37,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:28:37,955 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) [2022-09-16 11:28:37,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-09-16 11:28:38,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:28:38,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:28:38,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:28:38,253 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:28:38,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:28:38,411 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:28:38,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788232317] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:28:38,412 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:28:38,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-09-16 11:28:38,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566190855] [2022-09-16 11:28:38,413 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:28:38,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:28:38,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:28:38,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:28:38,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:28:38,416 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 199 [2022-09-16 11:28:38,418 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 206 transitions, 696 flow. Second operand has 12 states, 12 states have (on average 175.25) internal successors, (2103), 12 states have internal predecessors, (2103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:38,418 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:28:38,418 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 199 [2022-09-16 11:28:38,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:28:39,063 INFO L130 PetriNetUnfolder]: 170/3003 cut-off events. [2022-09-16 11:28:39,063 INFO L131 PetriNetUnfolder]: For 1042/1048 co-relation queries the response was YES. [2022-09-16 11:28:39,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4696 conditions, 3003 events. 170/3003 cut-off events. For 1042/1048 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 20379 event pairs, 42 based on Foata normal form. 24/2912 useless extension candidates. Maximal degree in co-relation 3911. Up to 117 conditions per place. [2022-09-16 11:28:39,096 INFO L137 encePairwiseOnDemand]: 190/199 looper letters, 65 selfloop transitions, 26 changer transitions 0/265 dead transitions. [2022-09-16 11:28:39,096 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 265 transitions, 1105 flow [2022-09-16 11:28:39,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:28:39,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-16 11:28:39,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3183 transitions. [2022-09-16 11:28:39,136 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8886097152428811 [2022-09-16 11:28:39,136 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3183 transitions. [2022-09-16 11:28:39,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3183 transitions. [2022-09-16 11:28:39,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:28:39,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3183 transitions. [2022-09-16 11:28:39,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 176.83333333333334) internal successors, (3183), 18 states have internal predecessors, (3183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:39,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 199.0) internal successors, (3781), 19 states have internal predecessors, (3781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:39,155 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 199.0) internal successors, (3781), 19 states have internal predecessors, (3781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:39,155 INFO L175 Difference]: Start difference. First operand has 226 places, 206 transitions, 696 flow. Second operand 18 states and 3183 transitions. [2022-09-16 11:28:39,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 265 transitions, 1105 flow [2022-09-16 11:28:39,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 265 transitions, 1097 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 11:28:39,169 INFO L231 Difference]: Finished difference. Result has 244 places, 222 transitions, 866 flow [2022-09-16 11:28:39,170 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=688, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=866, PETRI_PLACES=244, PETRI_TRANSITIONS=222} [2022-09-16 11:28:39,171 INFO L287 CegarLoopForPetriNet]: 184 programPoint places, 60 predicate places. [2022-09-16 11:28:39,171 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 222 transitions, 866 flow [2022-09-16 11:28:39,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 175.25) internal successors, (2103), 12 states have internal predecessors, (2103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:39,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:28:39,186 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:28:39,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-09-16 11:28:39,399 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,SelfDestructingSolverStorable9 [2022-09-16 11:28:39,399 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-09-16 11:28:39,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:28:39,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1025405840, now seen corresponding path program 1 times [2022-09-16 11:28:39,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:28:39,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386593553] [2022-09-16 11:28:39,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:28:39,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:28:39,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:28:39,474 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:28:39,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:28:39,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386593553] [2022-09-16 11:28:39,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386593553] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:28:39,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122552039] [2022-09-16 11:28:39,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:28:39,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:28:39,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:28:39,476 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) [2022-09-16 11:28:39,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-09-16 11:28:39,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:28:39,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:28:39,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:28:39,733 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:28:39,733 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:28:39,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122552039] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:28:39,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:28:39,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:28:39,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322664864] [2022-09-16 11:28:39,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:28:39,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:28:39,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:28:39,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:28:39,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:28:39,737 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 199 [2022-09-16 11:28:39,738 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 222 transitions, 866 flow. Second operand has 6 states, 6 states have (on average 174.66666666666666) internal successors, (1048), 6 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:39,739 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:28:39,739 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 199 [2022-09-16 11:28:39,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:28:40,371 INFO L130 PetriNetUnfolder]: 179/3200 cut-off events. [2022-09-16 11:28:40,372 INFO L131 PetriNetUnfolder]: For 1678/1684 co-relation queries the response was YES. [2022-09-16 11:28:40,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5207 conditions, 3200 events. 179/3200 cut-off events. For 1678/1684 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 21976 event pairs, 43 based on Foata normal form. 30/3105 useless extension candidates. Maximal degree in co-relation 4273. Up to 245 conditions per place. [2022-09-16 11:28:40,404 INFO L137 encePairwiseOnDemand]: 191/199 looper letters, 49 selfloop transitions, 19 changer transitions 0/242 dead transitions. [2022-09-16 11:28:40,404 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 242 transitions, 1091 flow [2022-09-16 11:28:40,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-16 11:28:40,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-16 11:28:40,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1423 transitions. [2022-09-16 11:28:40,407 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8938442211055276 [2022-09-16 11:28:40,407 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1423 transitions. [2022-09-16 11:28:40,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1423 transitions. [2022-09-16 11:28:40,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:28:40,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1423 transitions. [2022-09-16 11:28:40,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 177.875) internal successors, (1423), 8 states have internal predecessors, (1423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:40,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 199.0) internal successors, (1791), 9 states have internal predecessors, (1791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:40,414 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 199.0) internal successors, (1791), 9 states have internal predecessors, (1791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:40,414 INFO L175 Difference]: Start difference. First operand has 244 places, 222 transitions, 866 flow. Second operand 8 states and 1423 transitions. [2022-09-16 11:28:40,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 242 transitions, 1091 flow [2022-09-16 11:28:40,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 242 transitions, 1034 flow, removed 22 selfloop flow, removed 5 redundant places. [2022-09-16 11:28:40,425 INFO L231 Difference]: Finished difference. Result has 246 places, 224 transitions, 911 flow [2022-09-16 11:28:40,425 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=792, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=911, PETRI_PLACES=246, PETRI_TRANSITIONS=224} [2022-09-16 11:28:40,426 INFO L287 CegarLoopForPetriNet]: 184 programPoint places, 62 predicate places. [2022-09-16 11:28:40,426 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 224 transitions, 911 flow [2022-09-16 11:28:40,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 174.66666666666666) internal successors, (1048), 6 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:40,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:28:40,427 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:28:40,454 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-09-16 11:28:40,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:28:40,652 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-09-16 11:28:40,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:28:40,652 INFO L85 PathProgramCache]: Analyzing trace with hash -138872712, now seen corresponding path program 1 times [2022-09-16 11:28:40,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:28:40,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17632826] [2022-09-16 11:28:40,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:28:40,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:28:40,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:28:40,711 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:28:40,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:28:40,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17632826] [2022-09-16 11:28:40,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17632826] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:28:40,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:28:40,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:28:40,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584526043] [2022-09-16 11:28:40,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:28:40,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:28:40,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:28:40,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:28:40,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:28:40,713 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 199 [2022-09-16 11:28:40,714 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 224 transitions, 911 flow. Second operand has 4 states, 4 states have (on average 180.0) internal successors, (720), 4 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:40,714 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:28:40,714 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 199 [2022-09-16 11:28:40,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:28:41,189 INFO L130 PetriNetUnfolder]: 130/3007 cut-off events. [2022-09-16 11:28:41,190 INFO L131 PetriNetUnfolder]: For 1283/1283 co-relation queries the response was YES. [2022-09-16 11:28:41,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4673 conditions, 3007 events. 130/3007 cut-off events. For 1283/1283 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 19269 event pairs, 26 based on Foata normal form. 24/2917 useless extension candidates. Maximal degree in co-relation 4082. Up to 133 conditions per place. [2022-09-16 11:28:41,224 INFO L137 encePairwiseOnDemand]: 193/199 looper letters, 12 selfloop transitions, 8 changer transitions 0/227 dead transitions. [2022-09-16 11:28:41,225 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 227 transitions, 961 flow [2022-09-16 11:28:41,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:28:41,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:28:41,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 903 transitions. [2022-09-16 11:28:41,227 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.907537688442211 [2022-09-16 11:28:41,227 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 903 transitions. [2022-09-16 11:28:41,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 903 transitions. [2022-09-16 11:28:41,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:28:41,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 903 transitions. [2022-09-16 11:28:41,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 180.6) internal successors, (903), 5 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:41,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 199.0) internal successors, (1194), 6 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:41,232 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 199.0) internal successors, (1194), 6 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:41,232 INFO L175 Difference]: Start difference. First operand has 246 places, 224 transitions, 911 flow. Second operand 5 states and 903 transitions. [2022-09-16 11:28:41,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 227 transitions, 961 flow [2022-09-16 11:28:41,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 227 transitions, 945 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-09-16 11:28:41,244 INFO L231 Difference]: Finished difference. Result has 247 places, 224 transitions, 915 flow [2022-09-16 11:28:41,245 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=891, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=915, PETRI_PLACES=247, PETRI_TRANSITIONS=224} [2022-09-16 11:28:41,245 INFO L287 CegarLoopForPetriNet]: 184 programPoint places, 63 predicate places. [2022-09-16 11:28:41,246 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 224 transitions, 915 flow [2022-09-16 11:28:41,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 180.0) internal successors, (720), 4 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:41,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:28:41,246 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:28:41,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-09-16 11:28:41,247 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-09-16 11:28:41,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:28:41,247 INFO L85 PathProgramCache]: Analyzing trace with hash -10086240, now seen corresponding path program 1 times [2022-09-16 11:28:41,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:28:41,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472799769] [2022-09-16 11:28:41,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:28:41,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:28:41,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:28:41,318 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:28:41,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:28:41,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472799769] [2022-09-16 11:28:41,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472799769] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:28:41,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276953739] [2022-09-16 11:28:41,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:28:41,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:28:41,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:28:41,324 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) [2022-09-16 11:28:41,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-09-16 11:28:41,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:28:41,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:28:41,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:28:41,568 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:28:41,569 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:28:41,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276953739] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:28:41,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:28:41,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:28:41,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635282382] [2022-09-16 11:28:41,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:28:41,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:28:41,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:28:41,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:28:41,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:28:41,571 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 199 [2022-09-16 11:28:41,572 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 224 transitions, 915 flow. Second operand has 6 states, 6 states have (on average 179.16666666666666) internal successors, (1075), 6 states have internal predecessors, (1075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:41,572 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:28:41,572 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 199 [2022-09-16 11:28:41,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:28:42,087 INFO L130 PetriNetUnfolder]: 126/2979 cut-off events. [2022-09-16 11:28:42,088 INFO L131 PetriNetUnfolder]: For 1344/1344 co-relation queries the response was YES. [2022-09-16 11:28:42,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4713 conditions, 2979 events. 126/2979 cut-off events. For 1344/1344 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 18994 event pairs, 21 based on Foata normal form. 24/2889 useless extension candidates. Maximal degree in co-relation 4137. Up to 130 conditions per place. [2022-09-16 11:28:42,119 INFO L137 encePairwiseOnDemand]: 194/199 looper letters, 17 selfloop transitions, 6 changer transitions 0/230 dead transitions. [2022-09-16 11:28:42,120 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 230 transitions, 981 flow [2022-09-16 11:28:42,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:28:42,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:28:42,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1263 transitions. [2022-09-16 11:28:42,123 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9066762383345298 [2022-09-16 11:28:42,123 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1263 transitions. [2022-09-16 11:28:42,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1263 transitions. [2022-09-16 11:28:42,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:28:42,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1263 transitions. [2022-09-16 11:28:42,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 180.42857142857142) internal successors, (1263), 7 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:42,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 199.0) internal successors, (1592), 8 states have internal predecessors, (1592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:42,129 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 199.0) internal successors, (1592), 8 states have internal predecessors, (1592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:42,129 INFO L175 Difference]: Start difference. First operand has 247 places, 224 transitions, 915 flow. Second operand 7 states and 1263 transitions. [2022-09-16 11:28:42,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 230 transitions, 981 flow [2022-09-16 11:28:42,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 230 transitions, 969 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 11:28:42,142 INFO L231 Difference]: Finished difference. Result has 249 places, 223 transitions, 911 flow [2022-09-16 11:28:42,142 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=899, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=911, PETRI_PLACES=249, PETRI_TRANSITIONS=223} [2022-09-16 11:28:42,144 INFO L287 CegarLoopForPetriNet]: 184 programPoint places, 65 predicate places. [2022-09-16 11:28:42,144 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 223 transitions, 911 flow [2022-09-16 11:28:42,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 179.16666666666666) internal successors, (1075), 6 states have internal predecessors, (1075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:42,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:28:42,145 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:28:42,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-09-16 11:28:42,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:28:42,349 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-09-16 11:28:42,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:28:42,350 INFO L85 PathProgramCache]: Analyzing trace with hash 936435751, now seen corresponding path program 1 times [2022-09-16 11:28:42,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:28:42,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325916668] [2022-09-16 11:28:42,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:28:42,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:28:42,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:28:42,443 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:28:42,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:28:42,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325916668] [2022-09-16 11:28:42,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325916668] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:28:42,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084954274] [2022-09-16 11:28:42,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:28:42,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:28:42,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:28:42,446 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) [2022-09-16 11:28:42,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-09-16 11:28:42,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:28:42,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 7 conjunts are in the unsatisfiable core [2022-09-16 11:28:42,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:28:42,760 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:28:42,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:28:43,019 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:28:43,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084954274] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:28:43,019 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:28:43,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-09-16 11:28:43,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047318196] [2022-09-16 11:28:43,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:28:43,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-09-16 11:28:43,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:28:43,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-09-16 11:28:43,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-09-16 11:28:43,023 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 199 [2022-09-16 11:28:43,025 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 223 transitions, 911 flow. Second operand has 16 states, 16 states have (on average 169.5) internal successors, (2712), 16 states have internal predecessors, (2712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:43,026 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:28:43,026 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 199 [2022-09-16 11:28:43,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:28:43,809 INFO L130 PetriNetUnfolder]: 244/3560 cut-off events. [2022-09-16 11:28:43,810 INFO L131 PetriNetUnfolder]: For 2070/2070 co-relation queries the response was YES. [2022-09-16 11:28:43,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5968 conditions, 3560 events. 244/3560 cut-off events. For 2070/2070 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 26241 event pairs, 62 based on Foata normal form. 38/3460 useless extension candidates. Maximal degree in co-relation 4960. Up to 130 conditions per place. [2022-09-16 11:28:43,834 INFO L137 encePairwiseOnDemand]: 186/199 looper letters, 81 selfloop transitions, 47 changer transitions 0/290 dead transitions. [2022-09-16 11:28:43,835 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 290 transitions, 1413 flow [2022-09-16 11:28:43,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-09-16 11:28:43,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-09-16 11:28:43,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3926 transitions. [2022-09-16 11:28:43,841 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8577670963513219 [2022-09-16 11:28:43,841 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3926 transitions. [2022-09-16 11:28:43,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3926 transitions. [2022-09-16 11:28:43,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:28:43,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3926 transitions. [2022-09-16 11:28:43,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 170.69565217391303) internal successors, (3926), 23 states have internal predecessors, (3926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:43,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 199.0) internal successors, (4776), 24 states have internal predecessors, (4776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:43,857 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 199.0) internal successors, (4776), 24 states have internal predecessors, (4776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:43,857 INFO L175 Difference]: Start difference. First operand has 249 places, 223 transitions, 911 flow. Second operand 23 states and 3926 transitions. [2022-09-16 11:28:43,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 290 transitions, 1413 flow [2022-09-16 11:28:43,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 290 transitions, 1402 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-09-16 11:28:43,870 INFO L231 Difference]: Finished difference. Result has 270 places, 235 transitions, 1110 flow [2022-09-16 11:28:43,871 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=872, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1110, PETRI_PLACES=270, PETRI_TRANSITIONS=235} [2022-09-16 11:28:43,871 INFO L287 CegarLoopForPetriNet]: 184 programPoint places, 86 predicate places. [2022-09-16 11:28:43,871 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 235 transitions, 1110 flow [2022-09-16 11:28:43,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 169.5) internal successors, (2712), 16 states have internal predecessors, (2712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:43,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:28:43,872 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:28:43,897 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-09-16 11:28:44,087 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,SelfDestructingSolverStorable13 [2022-09-16 11:28:44,088 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-09-16 11:28:44,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:28:44,088 INFO L85 PathProgramCache]: Analyzing trace with hash -275172123, now seen corresponding path program 1 times [2022-09-16 11:28:44,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:28:44,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311106042] [2022-09-16 11:28:44,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:28:44,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:28:44,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:28:44,180 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:28:44,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:28:44,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311106042] [2022-09-16 11:28:44,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311106042] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:28:44,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738638094] [2022-09-16 11:28:44,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:28:44,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:28:44,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:28:44,183 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) [2022-09-16 11:28:44,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-09-16 11:28:44,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:28:44,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 7 conjunts are in the unsatisfiable core [2022-09-16 11:28:44,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:28:44,473 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:28:44,473 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:28:44,667 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:28:44,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738638094] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:28:44,668 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:28:44,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 13 [2022-09-16 11:28:44,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964155616] [2022-09-16 11:28:44,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:28:44,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-09-16 11:28:44,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:28:44,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-09-16 11:28:44,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-09-16 11:28:44,672 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 199 [2022-09-16 11:28:44,674 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 235 transitions, 1110 flow. Second operand has 14 states, 14 states have (on average 170.14285714285714) internal successors, (2382), 14 states have internal predecessors, (2382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:44,674 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:28:44,674 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 199 [2022-09-16 11:28:44,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:28:45,906 INFO L130 PetriNetUnfolder]: 391/5388 cut-off events. [2022-09-16 11:28:45,906 INFO L131 PetriNetUnfolder]: For 3641/3641 co-relation queries the response was YES. [2022-09-16 11:28:45,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9232 conditions, 5388 events. 391/5388 cut-off events. For 3641/3641 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 42403 event pairs, 58 based on Foata normal form. 53/5239 useless extension candidates. Maximal degree in co-relation 8192. Up to 276 conditions per place. [2022-09-16 11:28:45,944 INFO L137 encePairwiseOnDemand]: 187/199 looper letters, 118 selfloop transitions, 78 changer transitions 0/358 dead transitions. [2022-09-16 11:28:45,944 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 358 transitions, 2360 flow [2022-09-16 11:28:45,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-09-16 11:28:45,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-09-16 11:28:45,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4109 transitions. [2022-09-16 11:28:45,949 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8603433835845896 [2022-09-16 11:28:45,949 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4109 transitions. [2022-09-16 11:28:45,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4109 transitions. [2022-09-16 11:28:45,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:28:45,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4109 transitions. [2022-09-16 11:28:45,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 171.20833333333334) internal successors, (4109), 24 states have internal predecessors, (4109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:45,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 199.0) internal successors, (4975), 25 states have internal predecessors, (4975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:45,962 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 199.0) internal successors, (4975), 25 states have internal predecessors, (4975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:45,962 INFO L175 Difference]: Start difference. First operand has 270 places, 235 transitions, 1110 flow. Second operand 24 states and 4109 transitions. [2022-09-16 11:28:45,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 358 transitions, 2360 flow [2022-09-16 11:28:45,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 358 transitions, 2183 flow, removed 78 selfloop flow, removed 5 redundant places. [2022-09-16 11:28:45,983 INFO L231 Difference]: Finished difference. Result has 297 places, 289 transitions, 1846 flow [2022-09-16 11:28:45,984 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=1047, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1846, PETRI_PLACES=297, PETRI_TRANSITIONS=289} [2022-09-16 11:28:45,984 INFO L287 CegarLoopForPetriNet]: 184 programPoint places, 113 predicate places. [2022-09-16 11:28:45,985 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 289 transitions, 1846 flow [2022-09-16 11:28:45,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 170.14285714285714) internal successors, (2382), 14 states have internal predecessors, (2382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:45,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:28:45,986 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:28:46,013 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-09-16 11:28:46,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-09-16 11:28:46,199 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-09-16 11:28:46,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:28:46,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1971445504, now seen corresponding path program 2 times [2022-09-16 11:28:46,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:28:46,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406390403] [2022-09-16 11:28:46,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:28:46,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:28:46,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:28:46,356 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 0 proven. 402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:28:46,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:28:46,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406390403] [2022-09-16 11:28:46,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406390403] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:28:46,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676573195] [2022-09-16 11:28:46,357 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:28:46,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:28:46,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:28:46,358 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) [2022-09-16 11:28:46,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-09-16 11:28:46,518 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-09-16 11:28:46,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:28:46,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 11 conjunts are in the unsatisfiable core [2022-09-16 11:28:46,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:28:46,839 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 0 proven. 402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:28:46,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:28:47,229 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 0 proven. 402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:28:47,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676573195] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:28:47,230 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:28:47,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2022-09-16 11:28:47,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11772087] [2022-09-16 11:28:47,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:28:47,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-09-16 11:28:47,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:28:47,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-09-16 11:28:47,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2022-09-16 11:28:47,235 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 199 [2022-09-16 11:28:47,238 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 289 transitions, 1846 flow. Second operand has 24 states, 24 states have (on average 175.625) internal successors, (4215), 24 states have internal predecessors, (4215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:47,238 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:28:47,238 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 199 [2022-09-16 11:28:47,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:28:49,186 INFO L130 PetriNetUnfolder]: 458/8023 cut-off events. [2022-09-16 11:28:49,186 INFO L131 PetriNetUnfolder]: For 7996/7999 co-relation queries the response was YES. [2022-09-16 11:28:49,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14030 conditions, 8023 events. 458/8023 cut-off events. For 7996/7999 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 59527 event pairs, 128 based on Foata normal form. 48/7746 useless extension candidates. Maximal degree in co-relation 12995. Up to 405 conditions per place. [2022-09-16 11:28:49,247 INFO L137 encePairwiseOnDemand]: 190/199 looper letters, 176 selfloop transitions, 70 changer transitions 0/428 dead transitions. [2022-09-16 11:28:49,247 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 428 transitions, 3169 flow [2022-09-16 11:28:49,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-09-16 11:28:49,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-09-16 11:28:49,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 5854 transitions. [2022-09-16 11:28:49,253 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8914268311253236 [2022-09-16 11:28:49,254 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 5854 transitions. [2022-09-16 11:28:49,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 5854 transitions. [2022-09-16 11:28:49,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:28:49,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 5854 transitions. [2022-09-16 11:28:49,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 177.3939393939394) internal successors, (5854), 33 states have internal predecessors, (5854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:49,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 199.0) internal successors, (6766), 34 states have internal predecessors, (6766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:49,275 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 199.0) internal successors, (6766), 34 states have internal predecessors, (6766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:49,275 INFO L175 Difference]: Start difference. First operand has 297 places, 289 transitions, 1846 flow. Second operand 33 states and 5854 transitions. [2022-09-16 11:28:49,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 428 transitions, 3169 flow [2022-09-16 11:28:49,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 428 transitions, 3041 flow, removed 60 selfloop flow, removed 3 redundant places. [2022-09-16 11:28:49,311 INFO L231 Difference]: Finished difference. Result has 333 places, 323 transitions, 2362 flow [2022-09-16 11:28:49,311 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=1718, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=2362, PETRI_PLACES=333, PETRI_TRANSITIONS=323} [2022-09-16 11:28:49,312 INFO L287 CegarLoopForPetriNet]: 184 programPoint places, 149 predicate places. [2022-09-16 11:28:49,312 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 323 transitions, 2362 flow [2022-09-16 11:28:49,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 175.625) internal successors, (4215), 24 states have internal predecessors, (4215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:49,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:28:49,314 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:28:49,341 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-09-16 11:28:49,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:28:49,535 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-09-16 11:28:49,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:28:49,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1070453499, now seen corresponding path program 1 times [2022-09-16 11:28:49,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:28:49,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289410071] [2022-09-16 11:28:49,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:28:49,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:28:49,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:28:49,690 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 221 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-09-16 11:28:49,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:28:49,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289410071] [2022-09-16 11:28:49,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289410071] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:28:49,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348457085] [2022-09-16 11:28:49,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:28:49,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:28:49,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:28:49,693 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) [2022-09-16 11:28:49,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-09-16 11:28:49,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:28:49,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 11 conjunts are in the unsatisfiable core [2022-09-16 11:28:49,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:28:50,138 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-09-16 11:28:50,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:28:50,476 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-09-16 11:28:50,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348457085] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:28:50,477 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:28:50,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 17 [2022-09-16 11:28:50,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864071723] [2022-09-16 11:28:50,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:28:50,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-16 11:28:50,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:28:50,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-16 11:28:50,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2022-09-16 11:28:50,481 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 199 [2022-09-16 11:28:50,483 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 323 transitions, 2362 flow. Second operand has 18 states, 18 states have (on average 170.11111111111111) internal successors, (3062), 18 states have internal predecessors, (3062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:50,484 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:28:50,484 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 199 [2022-09-16 11:28:50,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:28:53,814 INFO L130 PetriNetUnfolder]: 897/12193 cut-off events. [2022-09-16 11:28:53,814 INFO L131 PetriNetUnfolder]: For 12165/12165 co-relation queries the response was YES. [2022-09-16 11:28:53,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22032 conditions, 12193 events. 897/12193 cut-off events. For 12165/12165 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 109858 event pairs, 211 based on Foata normal form. 23/11742 useless extension candidates. Maximal degree in co-relation 20840. Up to 553 conditions per place. [2022-09-16 11:28:53,928 INFO L137 encePairwiseOnDemand]: 187/199 looper letters, 190 selfloop transitions, 204 changer transitions 0/556 dead transitions. [2022-09-16 11:28:53,928 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 556 transitions, 5042 flow [2022-09-16 11:28:53,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-09-16 11:28:53,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-09-16 11:28:53,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6482 transitions. [2022-09-16 11:28:53,935 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8571806400423169 [2022-09-16 11:28:53,935 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6482 transitions. [2022-09-16 11:28:53,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6482 transitions. [2022-09-16 11:28:53,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:28:53,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6482 transitions. [2022-09-16 11:28:53,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 170.57894736842104) internal successors, (6482), 38 states have internal predecessors, (6482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:53,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 199.0) internal successors, (7761), 39 states have internal predecessors, (7761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:53,960 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 199.0) internal successors, (7761), 39 states have internal predecessors, (7761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:53,960 INFO L175 Difference]: Start difference. First operand has 333 places, 323 transitions, 2362 flow. Second operand 38 states and 6482 transitions. [2022-09-16 11:28:53,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 556 transitions, 5042 flow [2022-09-16 11:28:54,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 556 transitions, 4920 flow, removed 37 selfloop flow, removed 8 redundant places. [2022-09-16 11:28:54,030 INFO L231 Difference]: Finished difference. Result has 372 places, 442 transitions, 4417 flow [2022-09-16 11:28:54,031 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=2264, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=4417, PETRI_PLACES=372, PETRI_TRANSITIONS=442} [2022-09-16 11:28:54,031 INFO L287 CegarLoopForPetriNet]: 184 programPoint places, 188 predicate places. [2022-09-16 11:28:54,032 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 442 transitions, 4417 flow [2022-09-16 11:28:54,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 170.11111111111111) internal successors, (3062), 18 states have internal predecessors, (3062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:54,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:28:54,034 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:28:54,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-09-16 11:28:54,263 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,SelfDestructingSolverStorable16 [2022-09-16 11:28:54,264 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-09-16 11:28:54,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:28:54,264 INFO L85 PathProgramCache]: Analyzing trace with hash -28714547, now seen corresponding path program 2 times [2022-09-16 11:28:54,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:28:54,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555883686] [2022-09-16 11:28:54,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:28:54,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:28:54,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:28:54,477 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 364 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:28:54,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:28:54,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555883686] [2022-09-16 11:28:54,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555883686] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:28:54,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67418096] [2022-09-16 11:28:54,478 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:28:54,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:28:54,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:28:54,479 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) [2022-09-16 11:28:54,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-09-16 11:28:54,647 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-09-16 11:28:54,647 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:28:54,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 13 conjunts are in the unsatisfiable core [2022-09-16 11:28:54,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:28:55,193 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 364 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:28:55,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:28:55,648 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 364 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:28:55,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67418096] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:28:55,648 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:28:55,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 25 [2022-09-16 11:28:55,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904117837] [2022-09-16 11:28:55,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:28:55,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-09-16 11:28:55,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:28:55,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-09-16 11:28:55,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=499, Unknown=0, NotChecked=0, Total=650 [2022-09-16 11:28:55,653 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 199 [2022-09-16 11:28:55,656 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 442 transitions, 4417 flow. Second operand has 26 states, 26 states have (on average 170.07692307692307) internal successors, (4422), 26 states have internal predecessors, (4422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:55,656 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:28:55,656 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 199 [2022-09-16 11:28:55,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:29:01,360 INFO L130 PetriNetUnfolder]: 1418/18170 cut-off events. [2022-09-16 11:29:01,361 INFO L131 PetriNetUnfolder]: For 23048/23048 co-relation queries the response was YES. [2022-09-16 11:29:01,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33730 conditions, 18170 events. 1418/18170 cut-off events. For 23048/23048 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 184311 event pairs, 195 based on Foata normal form. 90/17581 useless extension candidates. Maximal degree in co-relation 32500. Up to 804 conditions per place. [2022-09-16 11:29:01,565 INFO L137 encePairwiseOnDemand]: 187/199 looper letters, 308 selfloop transitions, 350 changer transitions 0/820 dead transitions. [2022-09-16 11:29:01,565 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 820 transitions, 9629 flow [2022-09-16 11:29:01,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-09-16 11:29:01,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2022-09-16 11:29:01,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 8715 transitions. [2022-09-16 11:29:01,572 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8587052911616908 [2022-09-16 11:29:01,573 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 8715 transitions. [2022-09-16 11:29:01,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 8715 transitions. [2022-09-16 11:29:01,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:29:01,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 8715 transitions. [2022-09-16 11:29:01,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 170.88235294117646) internal successors, (8715), 51 states have internal predecessors, (8715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:29:01,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 199.0) internal successors, (10348), 52 states have internal predecessors, (10348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:29:01,600 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 199.0) internal successors, (10348), 52 states have internal predecessors, (10348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:29:01,601 INFO L175 Difference]: Start difference. First operand has 372 places, 442 transitions, 4417 flow. Second operand 51 states and 8715 transitions. [2022-09-16 11:29:01,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 820 transitions, 9629 flow [2022-09-16 11:29:01,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 820 transitions, 9395 flow, removed 113 selfloop flow, removed 3 redundant places. [2022-09-16 11:29:01,757 INFO L231 Difference]: Finished difference. Result has 432 places, 628 transitions, 8074 flow [2022-09-16 11:29:01,757 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=4307, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=8074, PETRI_PLACES=432, PETRI_TRANSITIONS=628} [2022-09-16 11:29:01,758 INFO L287 CegarLoopForPetriNet]: 184 programPoint places, 248 predicate places. [2022-09-16 11:29:01,758 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 628 transitions, 8074 flow [2022-09-16 11:29:01,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 170.07692307692307) internal successors, (4422), 26 states have internal predecessors, (4422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:29:01,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:29:01,760 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:29:01,788 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-09-16 11:29:01,973 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,SelfDestructingSolverStorable17 [2022-09-16 11:29:01,974 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-09-16 11:29:01,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:29:01,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1638945339, now seen corresponding path program 1 times [2022-09-16 11:29:01,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:29:01,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073298387] [2022-09-16 11:29:01,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:29:01,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:29:02,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:29:02,325 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-09-16 11:29:02,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:29:02,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073298387] [2022-09-16 11:29:02,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073298387] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:29:02,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74338727] [2022-09-16 11:29:02,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:29:02,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:29:02,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:29:02,328 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) [2022-09-16 11:29:02,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-09-16 11:29:02,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:29:02,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 673 conjuncts, 15 conjunts are in the unsatisfiable core [2022-09-16 11:29:02,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:29:02,844 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-09-16 11:29:02,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:29:03,317 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-09-16 11:29:03,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74338727] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:29:03,317 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:29:03,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 23 [2022-09-16 11:29:03,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189038361] [2022-09-16 11:29:03,318 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:29:03,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-09-16 11:29:03,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:29:03,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-09-16 11:29:03,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=436, Unknown=0, NotChecked=0, Total=552 [2022-09-16 11:29:03,322 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 199 [2022-09-16 11:29:03,324 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 628 transitions, 8074 flow. Second operand has 24 states, 24 states have (on average 170.5) internal successors, (4092), 24 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:29:03,324 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:29:03,324 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 199 [2022-09-16 11:29:03,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:29:12,779 INFO L130 PetriNetUnfolder]: 2240/27508 cut-off events. [2022-09-16 11:29:12,779 INFO L131 PetriNetUnfolder]: For 44950/44950 co-relation queries the response was YES. [2022-09-16 11:29:13,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52631 conditions, 27508 events. 2240/27508 cut-off events. For 44950/44950 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 308057 event pairs, 210 based on Foata normal form. 134/26619 useless extension candidates. Maximal degree in co-relation 51738. Up to 1292 conditions per place. [2022-09-16 11:29:13,169 INFO L137 encePairwiseOnDemand]: 187/199 looper letters, 196 selfloop transitions, 719 changer transitions 0/1077 dead transitions. [2022-09-16 11:29:13,169 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 1077 transitions, 16185 flow [2022-09-16 11:29:13,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-09-16 11:29:13,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-09-16 11:29:13,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 6643 transitions. [2022-09-16 11:29:13,175 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8559463986599665 [2022-09-16 11:29:13,175 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 6643 transitions. [2022-09-16 11:29:13,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 6643 transitions. [2022-09-16 11:29:13,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:29:13,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 6643 transitions. [2022-09-16 11:29:13,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 170.33333333333334) internal successors, (6643), 39 states have internal predecessors, (6643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:29:13,191 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 199.0) internal successors, (7960), 40 states have internal predecessors, (7960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:29:13,191 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 199.0) internal successors, (7960), 40 states have internal predecessors, (7960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:29:13,191 INFO L175 Difference]: Start difference. First operand has 432 places, 628 transitions, 8074 flow. Second operand 39 states and 6643 transitions. [2022-09-16 11:29:13,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 1077 transitions, 16185 flow [2022-09-16 11:29:13,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 1077 transitions, 14996 flow, removed 357 selfloop flow, removed 16 redundant places. [2022-09-16 11:29:13,447 INFO L231 Difference]: Finished difference. Result has 451 places, 971 transitions, 14585 flow [2022-09-16 11:29:13,448 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=7115, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=615, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=388, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=14585, PETRI_PLACES=451, PETRI_TRANSITIONS=971} [2022-09-16 11:29:13,448 INFO L287 CegarLoopForPetriNet]: 184 programPoint places, 267 predicate places. [2022-09-16 11:29:13,448 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 971 transitions, 14585 flow [2022-09-16 11:29:13,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 170.5) internal successors, (4092), 24 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:29:13,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:29:13,449 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:29:13,466 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-09-16 11:29:13,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:29:13,650 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-09-16 11:29:13,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:29:13,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1855255442, now seen corresponding path program 1 times [2022-09-16 11:29:13,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:29:13,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936342889] [2022-09-16 11:29:13,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:29:13,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:29:13,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:29:13,842 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 355 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-09-16 11:29:13,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:29:13,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936342889] [2022-09-16 11:29:13,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936342889] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:29:13,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124138280] [2022-09-16 11:29:13,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:29:13,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:29:13,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:29:13,844 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) [2022-09-16 11:29:13,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-09-16 11:29:14,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:29:14,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 686 conjuncts, 15 conjunts are in the unsatisfiable core [2022-09-16 11:29:14,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:29:14,359 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 355 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-09-16 11:29:14,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:29:14,745 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 355 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-09-16 11:29:14,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124138280] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:29:14,745 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:29:14,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2022-09-16 11:29:14,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215818457] [2022-09-16 11:29:14,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:29:14,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-09-16 11:29:14,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:29:14,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-09-16 11:29:14,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2022-09-16 11:29:14,748 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 199 [2022-09-16 11:29:14,749 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 971 transitions, 14585 flow. Second operand has 22 states, 22 states have (on average 170.45454545454547) internal successors, (3750), 22 states have internal predecessors, (3750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:29:14,749 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:29:14,750 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 199 [2022-09-16 11:29:14,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:29:30,450 INFO L130 PetriNetUnfolder]: 3411/40521 cut-off events. [2022-09-16 11:29:30,451 INFO L131 PetriNetUnfolder]: For 72680/72680 co-relation queries the response was YES. [2022-09-16 11:29:31,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79660 conditions, 40521 events. 3411/40521 cut-off events. For 72680/72680 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 493548 event pairs, 890 based on Foata normal form. 179/39162 useless extension candidates. Maximal degree in co-relation 78381. Up to 2104 conditions per place. [2022-09-16 11:29:31,218 INFO L137 encePairwiseOnDemand]: 188/199 looper letters, 245 selfloop transitions, 1190 changer transitions 0/1597 dead transitions. [2022-09-16 11:29:31,218 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 1597 transitions, 26485 flow [2022-09-16 11:29:31,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-09-16 11:29:31,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-09-16 11:29:31,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 5646 transitions. [2022-09-16 11:29:31,221 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8597533120146186 [2022-09-16 11:29:31,221 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 5646 transitions. [2022-09-16 11:29:31,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 5646 transitions. [2022-09-16 11:29:31,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:29:31,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 5646 transitions. [2022-09-16 11:29:31,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 171.0909090909091) internal successors, (5646), 33 states have internal predecessors, (5646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:29:31,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 199.0) internal successors, (6766), 34 states have internal predecessors, (6766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:29:31,234 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 199.0) internal successors, (6766), 34 states have internal predecessors, (6766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:29:31,234 INFO L175 Difference]: Start difference. First operand has 451 places, 971 transitions, 14585 flow. Second operand 33 states and 5646 transitions. [2022-09-16 11:29:31,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 1597 transitions, 26485 flow [2022-09-16 11:29:31,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 1597 transitions, 25607 flow, removed 408 selfloop flow, removed 5 redundant places. [2022-09-16 11:29:31,647 INFO L231 Difference]: Finished difference. Result has 475 places, 1458 transitions, 25198 flow [2022-09-16 11:29:31,648 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=13652, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=946, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=710, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=25198, PETRI_PLACES=475, PETRI_TRANSITIONS=1458} [2022-09-16 11:29:31,648 INFO L287 CegarLoopForPetriNet]: 184 programPoint places, 291 predicate places. [2022-09-16 11:29:31,648 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 1458 transitions, 25198 flow [2022-09-16 11:29:31,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 170.45454545454547) internal successors, (3750), 22 states have internal predecessors, (3750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:29:31,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:29:31,649 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:29:31,674 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-09-16 11:29:31,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:29:31,863 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-09-16 11:29:31,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:29:31,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1316181947, now seen corresponding path program 2 times [2022-09-16 11:29:31,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:29:31,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993083584] [2022-09-16 11:29:31,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:29:31,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:29:31,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:29:32,144 INFO L134 CoverageAnalysis]: Checked inductivity of 1197 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-09-16 11:29:32,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:29:32,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993083584] [2022-09-16 11:29:32,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993083584] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:29:32,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076149862] [2022-09-16 11:29:32,145 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:29:32,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:29:32,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:29:32,146 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) [2022-09-16 11:29:32,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-09-16 11:29:32,342 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-09-16 11:29:32,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:29:32,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 859 conjuncts, 12 conjunts are in the unsatisfiable core [2022-09-16 11:29:32,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:29:32,724 INFO L134 CoverageAnalysis]: Checked inductivity of 1197 backedges. 1092 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-09-16 11:29:32,724 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:29:32,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076149862] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:29:32,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:29:32,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [18] total 30 [2022-09-16 11:29:32,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285173754] [2022-09-16 11:29:32,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:29:32,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-09-16 11:29:32,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:29:32,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-09-16 11:29:32,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=732, Unknown=0, NotChecked=0, Total=870 [2022-09-16 11:29:32,727 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 199 [2022-09-16 11:29:32,729 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 1458 transitions, 25198 flow. Second operand has 13 states, 13 states have (on average 180.15384615384616) internal successors, (2342), 13 states have internal predecessors, (2342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:29:32,729 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:29:32,729 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 199 [2022-09-16 11:29:32,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:29:46,932 INFO L130 PetriNetUnfolder]: 1360/37985 cut-off events. [2022-09-16 11:29:46,932 INFO L131 PetriNetUnfolder]: For 52275/52275 co-relation queries the response was YES. [2022-09-16 11:29:47,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66673 conditions, 37985 events. 1360/37985 cut-off events. For 52275/52275 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 435957 event pairs, 34 based on Foata normal form. 89/36620 useless extension candidates. Maximal degree in co-relation 66587. Up to 968 conditions per place. [2022-09-16 11:29:47,660 INFO L137 encePairwiseOnDemand]: 193/199 looper letters, 36 selfloop transitions, 20 changer transitions 0/1067 dead transitions. [2022-09-16 11:29:47,660 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 1067 transitions, 16459 flow [2022-09-16 11:29:47,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:29:47,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-16 11:29:47,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3243 transitions. [2022-09-16 11:29:47,664 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9053601340033501 [2022-09-16 11:29:47,664 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3243 transitions. [2022-09-16 11:29:47,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3243 transitions. [2022-09-16 11:29:47,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:29:47,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3243 transitions. [2022-09-16 11:29:47,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 180.16666666666666) internal successors, (3243), 18 states have internal predecessors, (3243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:29:47,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 199.0) internal successors, (3781), 19 states have internal predecessors, (3781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:29:47,671 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 199.0) internal successors, (3781), 19 states have internal predecessors, (3781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:29:47,672 INFO L175 Difference]: Start difference. First operand has 475 places, 1458 transitions, 25198 flow. Second operand 18 states and 3243 transitions. [2022-09-16 11:29:47,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 465 places, 1067 transitions, 16459 flow [2022-09-16 11:29:48,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 1067 transitions, 15369 flow, removed 103 selfloop flow, removed 33 redundant places. [2022-09-16 11:29:48,069 INFO L231 Difference]: Finished difference. Result has 433 places, 1040 transitions, 15214 flow [2022-09-16 11:29:48,069 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=15101, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1027, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1019, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=15214, PETRI_PLACES=433, PETRI_TRANSITIONS=1040} [2022-09-16 11:29:48,070 INFO L287 CegarLoopForPetriNet]: 184 programPoint places, 249 predicate places. [2022-09-16 11:29:48,070 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 1040 transitions, 15214 flow [2022-09-16 11:29:48,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 180.15384615384616) internal successors, (2342), 13 states have internal predecessors, (2342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:29:48,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:29:48,070 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:29:48,087 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-09-16 11:29:48,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-09-16 11:29:48,271 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-09-16 11:29:48,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:29:48,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1950595586, now seen corresponding path program 1 times [2022-09-16 11:29:48,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:29:48,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289348848] [2022-09-16 11:29:48,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:29:48,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:29:48,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:29:48,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1162 backedges. 0 proven. 1116 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-09-16 11:29:48,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:29:48,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289348848] [2022-09-16 11:29:48,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289348848] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:29:48,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182359052] [2022-09-16 11:29:48,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:29:48,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:29:48,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:29:48,588 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) [2022-09-16 11:29:48,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-09-16 11:29:48,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:29:48,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 883 conjuncts, 12 conjunts are in the unsatisfiable core [2022-09-16 11:29:48,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:29:49,179 INFO L134 CoverageAnalysis]: Checked inductivity of 1162 backedges. 1074 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-09-16 11:29:49,179 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:29:49,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1182359052] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:29:49,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:29:49,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [18] total 30 [2022-09-16 11:29:49,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965743780] [2022-09-16 11:29:49,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:29:49,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-09-16 11:29:49,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:29:49,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-09-16 11:29:49,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=739, Unknown=0, NotChecked=0, Total=870 [2022-09-16 11:29:49,183 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 199 [2022-09-16 11:29:49,184 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 1040 transitions, 15214 flow. Second operand has 13 states, 13 states have (on average 180.15384615384616) internal successors, (2342), 13 states have internal predecessors, (2342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:29:49,184 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:29:49,184 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 199 [2022-09-16 11:29:49,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:30:06,409 INFO L130 PetriNetUnfolder]: 4540/55565 cut-off events. [2022-09-16 11:30:06,410 INFO L131 PetriNetUnfolder]: For 64082/64087 co-relation queries the response was YES. [2022-09-16 11:30:07,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98945 conditions, 55565 events. 4540/55565 cut-off events. For 64082/64087 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 745196 event pairs, 482 based on Foata normal form. 305/53145 useless extension candidates. Maximal degree in co-relation 98877. Up to 2920 conditions per place. [2022-09-16 11:30:07,440 INFO L137 encePairwiseOnDemand]: 193/199 looper letters, 0 selfloop transitions, 0 changer transitions 769/769 dead transitions. [2022-09-16 11:30:07,440 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 769 transitions, 10104 flow [2022-09-16 11:30:07,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:30:07,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-16 11:30:07,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3243 transitions. [2022-09-16 11:30:07,444 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9053601340033501 [2022-09-16 11:30:07,444 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3243 transitions. [2022-09-16 11:30:07,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3243 transitions. [2022-09-16 11:30:07,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:30:07,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3243 transitions. [2022-09-16 11:30:07,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 180.16666666666666) internal successors, (3243), 18 states have internal predecessors, (3243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:07,450 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 199.0) internal successors, (3781), 19 states have internal predecessors, (3781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:07,450 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 199.0) internal successors, (3781), 19 states have internal predecessors, (3781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:07,450 INFO L175 Difference]: Start difference. First operand has 433 places, 1040 transitions, 15214 flow. Second operand 18 states and 3243 transitions. [2022-09-16 11:30:07,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 769 transitions, 10104 flow [2022-09-16 11:30:08,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 769 transitions, 9233 flow, removed 41 selfloop flow, removed 34 redundant places. [2022-09-16 11:30:08,096 INFO L231 Difference]: Finished difference. Result has 405 places, 0 transitions, 0 flow [2022-09-16 11:30:08,096 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=8981, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=729, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=729, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=0, PETRI_PLACES=405, PETRI_TRANSITIONS=0} [2022-09-16 11:30:08,097 INFO L287 CegarLoopForPetriNet]: 184 programPoint places, 221 predicate places. [2022-09-16 11:30:08,097 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 0 transitions, 0 flow [2022-09-16 11:30:08,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 180.15384615384616) internal successors, (2342), 13 states have internal predecessors, (2342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:08,099 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2022-09-16 11:30:08,100 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 18 remaining) [2022-09-16 11:30:08,100 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2022-09-16 11:30:08,100 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2022-09-16 11:30:08,100 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2022-09-16 11:30:08,100 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2022-09-16 11:30:08,100 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2022-09-16 11:30:08,100 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2022-09-16 11:30:08,100 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2022-09-16 11:30:08,100 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2022-09-16 11:30:08,100 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2022-09-16 11:30:08,101 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2022-09-16 11:30:08,101 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2022-09-16 11:30:08,101 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2022-09-16 11:30:08,101 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2022-09-16 11:30:08,101 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2022-09-16 11:30:08,101 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2022-09-16 11:30:08,101 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2022-09-16 11:30:08,119 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-09-16 11:30:08,302 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,SelfDestructingSolverStorable21 [2022-09-16 11:30:08,303 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:30:08,307 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-09-16 11:30:08,307 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-09-16 11:30:08,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 11:30:08 BasicIcfg [2022-09-16 11:30:08,311 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-09-16 11:30:08,312 INFO L158 Benchmark]: Toolchain (without parser) took 96483.44ms. Allocated memory was 174.1MB in the beginning and 6.7GB in the end (delta: 6.5GB). Free memory was 115.8MB in the beginning and 5.6GB in the end (delta: -5.4GB). Peak memory consumption was 3.2GB. Max. memory is 8.0GB. [2022-09-16 11:30:08,312 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 174.1MB. Free memory is still 134.3MB. There was no memory consumed. Max. memory is 8.0GB. [2022-09-16 11:30:08,312 INFO L158 Benchmark]: CACSL2BoogieTranslator took 594.08ms. Allocated memory is still 174.1MB. Free memory was 115.6MB in the beginning and 130.1MB in the end (delta: -14.4MB). Peak memory consumption was 12.8MB. Max. memory is 8.0GB. [2022-09-16 11:30:08,312 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.94ms. Allocated memory is still 174.1MB. Free memory was 130.1MB in the beginning and 127.2MB in the end (delta: 2.8MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-09-16 11:30:08,312 INFO L158 Benchmark]: Boogie Preprocessor took 39.15ms. Allocated memory is still 174.1MB. Free memory was 127.2MB in the beginning and 125.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-16 11:30:08,313 INFO L158 Benchmark]: RCFGBuilder took 599.25ms. Allocated memory is still 174.1MB. Free memory was 125.4MB in the beginning and 107.9MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2022-09-16 11:30:08,313 INFO L158 Benchmark]: TraceAbstraction took 95181.82ms. Allocated memory was 174.1MB in the beginning and 6.7GB in the end (delta: 6.5GB). Free memory was 107.3MB in the beginning and 5.6GB in the end (delta: -5.4GB). Peak memory consumption was 3.2GB. Max. memory is 8.0GB. [2022-09-16 11:30:08,314 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 174.1MB. Free memory is still 134.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 594.08ms. Allocated memory is still 174.1MB. Free memory was 115.6MB in the beginning and 130.1MB in the end (delta: -14.4MB). Peak memory consumption was 12.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 63.94ms. Allocated memory is still 174.1MB. Free memory was 130.1MB in the beginning and 127.2MB in the end (delta: 2.8MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 39.15ms. Allocated memory is still 174.1MB. Free memory was 127.2MB in the beginning and 125.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 599.25ms. Allocated memory is still 174.1MB. Free memory was 125.4MB in the beginning and 107.9MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * TraceAbstraction took 95181.82ms. Allocated memory was 174.1MB in the beginning and 6.7GB in the end (delta: 6.5GB). Free memory was 107.3MB in the beginning and 5.6GB in the end (delta: -5.4GB). Peak memory consumption was 3.2GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 992]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 992]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 946]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 946]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1007]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1007]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 950]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 950]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 322 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 95.0s, OverallIterations: 22, TraceHistogramMax: 8, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 80.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1826 SdHoareTripleChecker+Valid, 2.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1826 mSDsluCounter, 755 SdHoareTripleChecker+Invalid, 1.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1094 mSDsCounter, 382 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3244 IncrementalHoareTripleChecker+Invalid, 3626 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 382 mSolverCounterUnsat, 167 mSDtfsCounter, 3244 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5551 GetRequests, 5097 SyntacticMatches, 1 SemanticMatches, 453 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3785 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25198occurred in iteration=20, InterpolantAutomatonStates: 369, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 8.3s InterpolantComputationTime, 7231 NumberOfCodeBlocks, 7231 NumberOfCodeBlocksAsserted, 38 NumberOfCheckSat, 9154 ConstructedInterpolants, 0 QuantifiedInterpolants, 28600 SizeOfPredicates, 97 NumberOfNonLiveVariables, 6416 ConjunctsInSsa, 123 ConjunctsInUnsatCore, 43 InterpolantComputations, 14 PerfectInterpolantSequences, 3046/10649 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-09-16 11:30:08,349 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...