/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/triangular-longer-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:29:26,314 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:29:26,316 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:29:26,359 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 11:29:26,359 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 11:29:26,362 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 11:29:26,365 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 11:29:26,367 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 11:29:26,368 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 11:29:26,372 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 11:29:26,373 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 11:29:26,374 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 11:29:26,374 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:29:26,376 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:29:26,377 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:29:26,380 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:29:26,380 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:29:26,381 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:29:26,383 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:29:26,388 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:29:26,389 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:29:26,392 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:29:26,393 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:29:26,394 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:29:26,397 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 11:29:26,397 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 11:29:26,398 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 11:29:26,399 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 11:29:26,399 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 11:29:26,400 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 11:29:26,400 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 11:29:26,401 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 11:29:26,402 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 11:29:26,403 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 11:29:26,403 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 11:29:26,404 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 11:29:26,404 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 11:29:26,404 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 11:29:26,405 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:29:26,405 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:29:26,406 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:29:26,407 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 11:29:26,435 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:29:26,436 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:29:26,437 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:29:26,437 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:29:26,437 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:29:26,437 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:29:26,437 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:29:26,438 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:29:26,438 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:29:26,438 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:29:26,439 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:29:26,439 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:29:26,439 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:29:26,439 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:29:26,439 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:29:26,439 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:29:26,439 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:29:26,439 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:29:26,440 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:29:26,440 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:29:26,440 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:29:26,440 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:29:26,440 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:29:26,440 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:29:26,440 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:29:26,441 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:29:26,442 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:29:26,442 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:29:26,442 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:29:26,442 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:29:26,442 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 11:29:26,442 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:29:26,657 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:29:26,687 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:29:26,689 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:29:26,690 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:29:26,691 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:29:26,692 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-longer-1.i [2022-09-16 11:29:26,737 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3512de20c/8992401c108348bdab5dd95ee1d082d3/FLAG1c6dffea7 [2022-09-16 11:29:27,146 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:29:27,147 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longer-1.i [2022-09-16 11:29:27,161 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3512de20c/8992401c108348bdab5dd95ee1d082d3/FLAG1c6dffea7 [2022-09-16 11:29:27,175 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3512de20c/8992401c108348bdab5dd95ee1d082d3 [2022-09-16 11:29:27,178 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:29:27,179 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:29:27,183 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:29:27,183 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:29:27,185 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:29:27,187 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:29:27" (1/1) ... [2022-09-16 11:29:27,188 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5057762b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:29:27, skipping insertion in model container [2022-09-16 11:29:27,188 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:29:27" (1/1) ... [2022-09-16 11:29:27,193 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:29:27,237 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:29:27,560 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/triangular-longer-1.i[30961,30974] [2022-09-16 11:29:27,561 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:29:27,568 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:29:27,614 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/triangular-longer-1.i[30961,30974] [2022-09-16 11:29:27,617 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:29:27,649 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:29:27,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:29:27 WrapperNode [2022-09-16 11:29:27,650 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:29:27,651 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:29:27,651 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:29:27,651 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:29:27,658 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:29:27" (1/1) ... [2022-09-16 11:29:27,679 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:29:27" (1/1) ... [2022-09-16 11:29:27,698 INFO L138 Inliner]: procedures = 169, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 47 [2022-09-16 11:29:27,699 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:29:27,700 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:29:27,700 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:29:27,700 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:29:27,706 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:29:27" (1/1) ... [2022-09-16 11:29:27,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:29:27" (1/1) ... [2022-09-16 11:29:27,718 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:29:27" (1/1) ... [2022-09-16 11:29:27,719 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:29:27" (1/1) ... [2022-09-16 11:29:27,723 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:29:27" (1/1) ... [2022-09-16 11:29:27,727 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:29:27" (1/1) ... [2022-09-16 11:29:27,728 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:29:27" (1/1) ... [2022-09-16 11:29:27,730 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:29:27,731 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:29:27,731 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:29:27,731 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:29:27,732 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:29:27" (1/1) ... [2022-09-16 11:29:27,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:29:27,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:29:27,759 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 11:29:27,774 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 11:29:27,799 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-09-16 11:29:27,799 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-09-16 11:29:27,799 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-09-16 11:29:27,800 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-09-16 11:29:27,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:29:27,800 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-16 11:29:27,800 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:29:27,800 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:29:27,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:29:27,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:29:27,800 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-16 11:29:27,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:29:27,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:29:27,802 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 11:29:27,896 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:29:27,897 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:29:28,101 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:29:28,122 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:29:28,122 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-09-16 11:29:28,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:29:28 BoogieIcfgContainer [2022-09-16 11:29:28,124 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:29:28,126 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:29:28,126 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:29:28,131 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:29:28,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:29:27" (1/3) ... [2022-09-16 11:29:28,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@389b8799 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:29:28, skipping insertion in model container [2022-09-16 11:29:28,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:29:27" (2/3) ... [2022-09-16 11:29:28,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@389b8799 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:29:28, skipping insertion in model container [2022-09-16 11:29:28,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:29:28" (3/3) ... [2022-09-16 11:29:28,134 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longer-1.i [2022-09-16 11:29:28,152 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:29:28,153 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-09-16 11:29:28,153 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:29:28,233 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-09-16 11:29:28,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 81 transitions, 172 flow [2022-09-16 11:29:28,306 INFO L130 PetriNetUnfolder]: 5/79 cut-off events. [2022-09-16 11:29:28,307 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:29:28,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 79 events. 5/79 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 114 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2022-09-16 11:29:28,311 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 81 transitions, 172 flow [2022-09-16 11:29:28,319 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 79 transitions, 164 flow [2022-09-16 11:29:28,328 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:29:28,334 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;@1754aa2d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:29:28,334 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-09-16 11:29:28,342 INFO L130 PetriNetUnfolder]: 1/33 cut-off events. [2022-09-16 11:29:28,343 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:29:28,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:29:28,344 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] [2022-09-16 11:29:28,344 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-09-16 11:29:28,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:29:28,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1934517196, now seen corresponding path program 1 times [2022-09-16 11:29:28,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:29:28,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353925649] [2022-09-16 11:29:28,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:29:28,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:29:28,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:29:28,623 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 11:29:28,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:29:28,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353925649] [2022-09-16 11:29:28,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353925649] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:29:28,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:29:28,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-16 11:29:28,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532427742] [2022-09-16 11:29:28,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:29:28,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:29:28,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:29:28,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:29:28,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:29:28,673 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 81 [2022-09-16 11:29:28,683 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 79 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 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 11:29:28,683 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:29:28,684 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 81 [2022-09-16 11:29:28,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:29:28,834 INFO L130 PetriNetUnfolder]: 61/298 cut-off events. [2022-09-16 11:29:28,834 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-09-16 11:29:28,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 404 conditions, 298 events. 61/298 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1494 event pairs, 14 based on Foata normal form. 45/261 useless extension candidates. Maximal degree in co-relation 373. Up to 49 conditions per place. [2022-09-16 11:29:28,840 INFO L137 encePairwiseOnDemand]: 74/81 looper letters, 11 selfloop transitions, 3 changer transitions 0/80 dead transitions. [2022-09-16 11:29:28,840 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 80 transitions, 194 flow [2022-09-16 11:29:28,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:29:28,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:29:28,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 225 transitions. [2022-09-16 11:29:28,853 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9259259259259259 [2022-09-16 11:29:28,853 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 225 transitions. [2022-09-16 11:29:28,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 225 transitions. [2022-09-16 11:29:28,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:29:28,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 225 transitions. [2022-09-16 11:29:28,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 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 11:29:28,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 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 11:29:28,869 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 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 11:29:28,871 INFO L175 Difference]: Start difference. First operand has 81 places, 79 transitions, 164 flow. Second operand 3 states and 225 transitions. [2022-09-16 11:29:28,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 80 transitions, 194 flow [2022-09-16 11:29:28,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 80 transitions, 192 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:29:28,879 INFO L231 Difference]: Finished difference. Result has 82 places, 77 transitions, 176 flow [2022-09-16 11:29:28,881 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=82, PETRI_TRANSITIONS=77} [2022-09-16 11:29:28,885 INFO L287 CegarLoopForPetriNet]: 81 programPoint places, 1 predicate places. [2022-09-16 11:29:28,885 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 77 transitions, 176 flow [2022-09-16 11:29:28,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 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 11:29:28,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:29:28,886 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] [2022-09-16 11:29:28,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:29:28,887 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-09-16 11:29:28,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:29:28,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1934517197, now seen corresponding path program 1 times [2022-09-16 11:29:28,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:29:28,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143294612] [2022-09-16 11:29:28,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:29:28,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:29:28,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:29:28,984 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 11:29:28,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:29:28,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143294612] [2022-09-16 11:29:28,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143294612] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:29:28,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:29:28,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-16 11:29:28,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281068580] [2022-09-16 11:29:28,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:29:28,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:29:28,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:29:28,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:29:28,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:29:28,988 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 81 [2022-09-16 11:29:28,988 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 77 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 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 11:29:28,988 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:29:28,988 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 81 [2022-09-16 11:29:28,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:29:29,039 INFO L130 PetriNetUnfolder]: 51/313 cut-off events. [2022-09-16 11:29:29,039 INFO L131 PetriNetUnfolder]: For 64/78 co-relation queries the response was YES. [2022-09-16 11:29:29,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 456 conditions, 313 events. 51/313 cut-off events. For 64/78 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1512 event pairs, 10 based on Foata normal form. 15/282 useless extension candidates. Maximal degree in co-relation 423. Up to 53 conditions per place. [2022-09-16 11:29:29,045 INFO L137 encePairwiseOnDemand]: 77/81 looper letters, 11 selfloop transitions, 4 changer transitions 0/81 dead transitions. [2022-09-16 11:29:29,051 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 81 transitions, 218 flow [2022-09-16 11:29:29,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:29:29,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:29:29,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 218 transitions. [2022-09-16 11:29:29,056 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.897119341563786 [2022-09-16 11:29:29,056 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 218 transitions. [2022-09-16 11:29:29,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 218 transitions. [2022-09-16 11:29:29,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:29:29,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 218 transitions. [2022-09-16 11:29:29,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 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 11:29:29,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 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 11:29:29,061 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 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 11:29:29,061 INFO L175 Difference]: Start difference. First operand has 82 places, 77 transitions, 176 flow. Second operand 3 states and 218 transitions. [2022-09-16 11:29:29,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 81 transitions, 218 flow [2022-09-16 11:29:29,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 81 transitions, 210 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:29:29,064 INFO L231 Difference]: Finished difference. Result has 83 places, 78 transitions, 190 flow [2022-09-16 11:29:29,065 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=83, PETRI_TRANSITIONS=78} [2022-09-16 11:29:29,065 INFO L287 CegarLoopForPetriNet]: 81 programPoint places, 2 predicate places. [2022-09-16 11:29:29,066 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 78 transitions, 190 flow [2022-09-16 11:29:29,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 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 11:29:29,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:29:29,067 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] [2022-09-16 11:29:29,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-16 11:29:29,067 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-09-16 11:29:29,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:29:29,068 INFO L85 PathProgramCache]: Analyzing trace with hash 649821270, now seen corresponding path program 1 times [2022-09-16 11:29:29,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:29:29,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816077785] [2022-09-16 11:29:29,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:29:29,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:29:29,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:29:29,147 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 11:29:29,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:29:29,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816077785] [2022-09-16 11:29:29,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816077785] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:29:29,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:29:29,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:29:29,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726485643] [2022-09-16 11:29:29,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:29:29,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:29:29,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:29:29,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:29:29,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:29:29,153 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 81 [2022-09-16 11:29:29,153 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 78 transitions, 190 flow. Second operand has 4 states, 4 states have (on average 62.5) internal successors, (250), 4 states have internal predecessors, (250), 0 states have call successors, (0), 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 11:29:29,153 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:29:29,153 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 81 [2022-09-16 11:29:29,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:29:29,278 INFO L130 PetriNetUnfolder]: 97/367 cut-off events. [2022-09-16 11:29:29,279 INFO L131 PetriNetUnfolder]: For 151/223 co-relation queries the response was YES. [2022-09-16 11:29:29,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 731 conditions, 367 events. 97/367 cut-off events. For 151/223 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1992 event pairs, 37 based on Foata normal form. 8/303 useless extension candidates. Maximal degree in co-relation 698. Up to 121 conditions per place. [2022-09-16 11:29:29,284 INFO L137 encePairwiseOnDemand]: 74/81 looper letters, 37 selfloop transitions, 4 changer transitions 0/100 dead transitions. [2022-09-16 11:29:29,284 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 100 transitions, 363 flow [2022-09-16 11:29:29,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:29:29,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:29:29,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 341 transitions. [2022-09-16 11:29:29,286 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8419753086419753 [2022-09-16 11:29:29,286 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 341 transitions. [2022-09-16 11:29:29,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 341 transitions. [2022-09-16 11:29:29,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:29:29,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 341 transitions. [2022-09-16 11:29:29,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 68.2) internal successors, (341), 5 states have internal predecessors, (341), 0 states have call successors, (0), 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 11:29:29,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 0 states have call successors, (0), 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 11:29:29,290 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 0 states have call successors, (0), 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 11:29:29,290 INFO L175 Difference]: Start difference. First operand has 83 places, 78 transitions, 190 flow. Second operand 5 states and 341 transitions. [2022-09-16 11:29:29,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 100 transitions, 363 flow [2022-09-16 11:29:29,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 100 transitions, 354 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:29:29,295 INFO L231 Difference]: Finished difference. Result has 89 places, 81 transitions, 218 flow [2022-09-16 11:29:29,295 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=218, PETRI_PLACES=89, PETRI_TRANSITIONS=81} [2022-09-16 11:29:29,297 INFO L287 CegarLoopForPetriNet]: 81 programPoint places, 8 predicate places. [2022-09-16 11:29:29,297 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 81 transitions, 218 flow [2022-09-16 11:29:29,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.5) internal successors, (250), 4 states have internal predecessors, (250), 0 states have call successors, (0), 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 11:29:29,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:29:29,298 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] [2022-09-16 11:29:29,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-16 11:29:29,298 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 11:29:29,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:29:29,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1215262810, now seen corresponding path program 1 times [2022-09-16 11:29:29,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:29:29,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692087530] [2022-09-16 11:29:29,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:29:29,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:29:29,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:29:29,373 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 11:29:29,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:29:29,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692087530] [2022-09-16 11:29:29,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692087530] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:29:29,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:29:29,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-16 11:29:29,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640939208] [2022-09-16 11:29:29,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:29:29,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:29:29,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:29:29,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:29:29,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:29:29,386 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 81 [2022-09-16 11:29:29,386 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 81 transitions, 218 flow. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 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 11:29:29,387 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:29:29,387 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 81 [2022-09-16 11:29:29,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:29:29,479 INFO L130 PetriNetUnfolder]: 74/623 cut-off events. [2022-09-16 11:29:29,479 INFO L131 PetriNetUnfolder]: For 119/130 co-relation queries the response was YES. [2022-09-16 11:29:29,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 931 conditions, 623 events. 74/623 cut-off events. For 119/130 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 4228 event pairs, 34 based on Foata normal form. 1/544 useless extension candidates. Maximal degree in co-relation 894. Up to 84 conditions per place. [2022-09-16 11:29:29,486 INFO L137 encePairwiseOnDemand]: 77/81 looper letters, 18 selfloop transitions, 3 changer transitions 0/90 dead transitions. [2022-09-16 11:29:29,487 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 90 transitions, 300 flow [2022-09-16 11:29:29,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:29:29,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:29:29,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 220 transitions. [2022-09-16 11:29:29,488 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9053497942386831 [2022-09-16 11:29:29,488 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 220 transitions. [2022-09-16 11:29:29,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 220 transitions. [2022-09-16 11:29:29,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:29:29,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 220 transitions. [2022-09-16 11:29:29,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 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 11:29:29,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 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 11:29:29,490 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 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 11:29:29,490 INFO L175 Difference]: Start difference. First operand has 89 places, 81 transitions, 218 flow. Second operand 3 states and 220 transitions. [2022-09-16 11:29:29,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 90 transitions, 300 flow [2022-09-16 11:29:29,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 90 transitions, 298 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:29:29,495 INFO L231 Difference]: Finished difference. Result has 92 places, 83 transitions, 238 flow [2022-09-16 11:29:29,495 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=238, PETRI_PLACES=92, PETRI_TRANSITIONS=83} [2022-09-16 11:29:29,496 INFO L287 CegarLoopForPetriNet]: 81 programPoint places, 11 predicate places. [2022-09-16 11:29:29,496 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 83 transitions, 238 flow [2022-09-16 11:29:29,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 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 11:29:29,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:29:29,499 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] [2022-09-16 11:29:29,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-16 11:29:29,501 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-09-16 11:29:29,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:29:29,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1215262809, now seen corresponding path program 1 times [2022-09-16 11:29:29,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:29:29,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435883081] [2022-09-16 11:29:29,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:29:29,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:29:29,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:29:29,566 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 11:29:29,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:29:29,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435883081] [2022-09-16 11:29:29,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435883081] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:29:29,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:29:29,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-16 11:29:29,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232164533] [2022-09-16 11:29:29,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:29:29,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:29:29,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:29:29,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:29:29,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:29:29,570 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 81 [2022-09-16 11:29:29,570 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 83 transitions, 238 flow. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 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 11:29:29,570 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:29:29,571 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 81 [2022-09-16 11:29:29,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:29:29,664 INFO L130 PetriNetUnfolder]: 64/602 cut-off events. [2022-09-16 11:29:29,665 INFO L131 PetriNetUnfolder]: For 215/226 co-relation queries the response was YES. [2022-09-16 11:29:29,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 977 conditions, 602 events. 64/602 cut-off events. For 215/226 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 4043 event pairs, 26 based on Foata normal form. 8/547 useless extension candidates. Maximal degree in co-relation 937. Up to 87 conditions per place. [2022-09-16 11:29:29,670 INFO L137 encePairwiseOnDemand]: 77/81 looper letters, 18 selfloop transitions, 4 changer transitions 0/91 dead transitions. [2022-09-16 11:29:29,670 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 91 transitions, 324 flow [2022-09-16 11:29:29,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:29:29,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:29:29,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 219 transitions. [2022-09-16 11:29:29,671 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9012345679012346 [2022-09-16 11:29:29,672 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 219 transitions. [2022-09-16 11:29:29,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 219 transitions. [2022-09-16 11:29:29,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:29:29,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 219 transitions. [2022-09-16 11:29:29,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 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 11:29:29,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 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 11:29:29,673 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 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 11:29:29,674 INFO L175 Difference]: Start difference. First operand has 92 places, 83 transitions, 238 flow. Second operand 3 states and 219 transitions. [2022-09-16 11:29:29,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 91 transitions, 324 flow [2022-09-16 11:29:29,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 91 transitions, 316 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:29:29,682 INFO L231 Difference]: Finished difference. Result has 93 places, 84 transitions, 252 flow [2022-09-16 11:29:29,682 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=252, PETRI_PLACES=93, PETRI_TRANSITIONS=84} [2022-09-16 11:29:29,684 INFO L287 CegarLoopForPetriNet]: 81 programPoint places, 12 predicate places. [2022-09-16 11:29:29,684 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 84 transitions, 252 flow [2022-09-16 11:29:29,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 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 11:29:29,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:29:29,684 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] [2022-09-16 11:29:29,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-16 11:29:29,685 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-09-16 11:29:29,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:29:29,686 INFO L85 PathProgramCache]: Analyzing trace with hash 363553065, now seen corresponding path program 1 times [2022-09-16 11:29:29,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:29:29,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184246777] [2022-09-16 11:29:29,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:29:29,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:29:29,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:29:29,753 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 11:29:29,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:29:29,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184246777] [2022-09-16 11:29:29,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184246777] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:29:29,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:29:29,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:29:29,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5416304] [2022-09-16 11:29:29,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:29:29,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:29:29,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:29:29,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:29:29,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:29:29,755 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 81 [2022-09-16 11:29:29,756 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 84 transitions, 252 flow. Second operand has 4 states, 4 states have (on average 62.75) internal successors, (251), 4 states have internal predecessors, (251), 0 states have call successors, (0), 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 11:29:29,756 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:29:29,756 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 81 [2022-09-16 11:29:29,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:29:29,862 INFO L130 PetriNetUnfolder]: 79/385 cut-off events. [2022-09-16 11:29:29,862 INFO L131 PetriNetUnfolder]: For 286/377 co-relation queries the response was YES. [2022-09-16 11:29:29,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 916 conditions, 385 events. 79/385 cut-off events. For 286/377 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2266 event pairs, 34 based on Foata normal form. 9/345 useless extension candidates. Maximal degree in co-relation 876. Up to 158 conditions per place. [2022-09-16 11:29:29,867 INFO L137 encePairwiseOnDemand]: 74/81 looper letters, 36 selfloop transitions, 4 changer transitions 0/102 dead transitions. [2022-09-16 11:29:29,867 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 102 transitions, 418 flow [2022-09-16 11:29:29,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:29:29,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:29:29,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 338 transitions. [2022-09-16 11:29:29,868 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8345679012345679 [2022-09-16 11:29:29,869 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 338 transitions. [2022-09-16 11:29:29,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 338 transitions. [2022-09-16 11:29:29,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:29:29,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 338 transitions. [2022-09-16 11:29:29,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 67.6) internal successors, (338), 5 states have internal predecessors, (338), 0 states have call successors, (0), 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 11:29:29,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 0 states have call successors, (0), 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 11:29:29,872 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 0 states have call successors, (0), 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 11:29:29,872 INFO L175 Difference]: Start difference. First operand has 93 places, 84 transitions, 252 flow. Second operand 5 states and 338 transitions. [2022-09-16 11:29:29,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 102 transitions, 418 flow [2022-09-16 11:29:29,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 102 transitions, 410 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:29:29,875 INFO L231 Difference]: Finished difference. Result has 99 places, 87 transitions, 280 flow [2022-09-16 11:29:29,876 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=280, PETRI_PLACES=99, PETRI_TRANSITIONS=87} [2022-09-16 11:29:29,877 INFO L287 CegarLoopForPetriNet]: 81 programPoint places, 18 predicate places. [2022-09-16 11:29:29,878 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 87 transitions, 280 flow [2022-09-16 11:29:29,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.75) internal successors, (251), 4 states have internal predecessors, (251), 0 states have call successors, (0), 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 11:29:29,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:29:29,878 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2022-09-16 11:29:29,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-16 11:29:29,878 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-09-16 11:29:29,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:29:29,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1964963806, now seen corresponding path program 1 times [2022-09-16 11:29:29,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:29:29,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687480528] [2022-09-16 11:29:29,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:29:29,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:29:29,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:29:29,911 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:29:29,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:29:29,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687480528] [2022-09-16 11:29:29,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687480528] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:29:29,912 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:29:29,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:29:29,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996846962] [2022-09-16 11:29:29,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:29:29,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:29:29,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:29:29,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:29:29,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:29:29,913 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 81 [2022-09-16 11:29:29,914 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 87 transitions, 280 flow. Second operand has 4 states, 4 states have (on average 64.25) internal successors, (257), 4 states have internal predecessors, (257), 0 states have call successors, (0), 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 11:29:29,914 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:29:29,914 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 81 [2022-09-16 11:29:29,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:29:29,991 INFO L130 PetriNetUnfolder]: 90/419 cut-off events. [2022-09-16 11:29:29,991 INFO L131 PetriNetUnfolder]: For 226/323 co-relation queries the response was YES. [2022-09-16 11:29:29,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1031 conditions, 419 events. 90/419 cut-off events. For 226/323 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2521 event pairs, 13 based on Foata normal form. 28/423 useless extension candidates. Maximal degree in co-relation 988. Up to 93 conditions per place. [2022-09-16 11:29:29,995 INFO L137 encePairwiseOnDemand]: 75/81 looper letters, 29 selfloop transitions, 8 changer transitions 0/99 dead transitions. [2022-09-16 11:29:29,995 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 99 transitions, 412 flow [2022-09-16 11:29:29,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:29:29,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:29:29,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 331 transitions. [2022-09-16 11:29:29,997 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.817283950617284 [2022-09-16 11:29:29,997 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 331 transitions. [2022-09-16 11:29:29,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 331 transitions. [2022-09-16 11:29:29,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:29:29,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 331 transitions. [2022-09-16 11:29:29,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 66.2) internal successors, (331), 5 states have internal predecessors, (331), 0 states have call successors, (0), 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 11:29:29,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 0 states have call successors, (0), 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 11:29:29,999 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 0 states have call successors, (0), 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 11:29:29,999 INFO L175 Difference]: Start difference. First operand has 99 places, 87 transitions, 280 flow. Second operand 5 states and 331 transitions. [2022-09-16 11:29:29,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 99 transitions, 412 flow [2022-09-16 11:29:30,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 99 transitions, 410 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:29:30,002 INFO L231 Difference]: Finished difference. Result has 102 places, 87 transitions, 298 flow [2022-09-16 11:29:30,002 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=298, PETRI_PLACES=102, PETRI_TRANSITIONS=87} [2022-09-16 11:29:30,003 INFO L287 CegarLoopForPetriNet]: 81 programPoint places, 21 predicate places. [2022-09-16 11:29:30,003 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 87 transitions, 298 flow [2022-09-16 11:29:30,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.25) internal successors, (257), 4 states have internal predecessors, (257), 0 states have call successors, (0), 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 11:29:30,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:29:30,003 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] [2022-09-16 11:29:30,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-16 11:29:30,004 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-09-16 11:29:30,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:29:30,004 INFO L85 PathProgramCache]: Analyzing trace with hash -317074780, now seen corresponding path program 1 times [2022-09-16 11:29:30,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:29:30,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683202425] [2022-09-16 11:29:30,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:29:30,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:29:30,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:29:30,037 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 11:29:30,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:29:30,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683202425] [2022-09-16 11:29:30,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683202425] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:29:30,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:29:30,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:29:30,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228062791] [2022-09-16 11:29:30,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:29:30,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:29:30,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:29:30,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:29:30,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:29:30,039 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 81 [2022-09-16 11:29:30,039 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 87 transitions, 298 flow. Second operand has 4 states, 4 states have (on average 66.5) internal successors, (266), 4 states have internal predecessors, (266), 0 states have call successors, (0), 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 11:29:30,040 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:29:30,040 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 81 [2022-09-16 11:29:30,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:29:30,197 INFO L130 PetriNetUnfolder]: 184/1024 cut-off events. [2022-09-16 11:29:30,198 INFO L131 PetriNetUnfolder]: For 640/715 co-relation queries the response was YES. [2022-09-16 11:29:30,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2257 conditions, 1024 events. 184/1024 cut-off events. For 640/715 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 8185 event pairs, 32 based on Foata normal form. 37/1047 useless extension candidates. Maximal degree in co-relation 2212. Up to 144 conditions per place. [2022-09-16 11:29:30,208 INFO L137 encePairwiseOnDemand]: 74/81 looper letters, 28 selfloop transitions, 9 changer transitions 0/106 dead transitions. [2022-09-16 11:29:30,208 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 106 transitions, 454 flow [2022-09-16 11:29:30,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:29:30,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:29:30,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 357 transitions. [2022-09-16 11:29:30,210 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8814814814814815 [2022-09-16 11:29:30,210 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 357 transitions. [2022-09-16 11:29:30,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 357 transitions. [2022-09-16 11:29:30,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:29:30,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 357 transitions. [2022-09-16 11:29:30,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 71.4) internal successors, (357), 5 states have internal predecessors, (357), 0 states have call successors, (0), 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 11:29:30,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 0 states have call successors, (0), 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 11:29:30,212 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 0 states have call successors, (0), 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 11:29:30,212 INFO L175 Difference]: Start difference. First operand has 102 places, 87 transitions, 298 flow. Second operand 5 states and 357 transitions. [2022-09-16 11:29:30,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 106 transitions, 454 flow [2022-09-16 11:29:30,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 106 transitions, 442 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 11:29:30,217 INFO L231 Difference]: Finished difference. Result has 106 places, 95 transitions, 376 flow [2022-09-16 11:29:30,217 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=376, PETRI_PLACES=106, PETRI_TRANSITIONS=95} [2022-09-16 11:29:30,218 INFO L287 CegarLoopForPetriNet]: 81 programPoint places, 25 predicate places. [2022-09-16 11:29:30,218 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 95 transitions, 376 flow [2022-09-16 11:29:30,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.5) internal successors, (266), 4 states have internal predecessors, (266), 0 states have call successors, (0), 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 11:29:30,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:29:30,218 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] [2022-09-16 11:29:30,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-16 11:29:30,219 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-09-16 11:29:30,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:29:30,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1458265281, now seen corresponding path program 1 times [2022-09-16 11:29:30,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:29:30,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451114495] [2022-09-16 11:29:30,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:29:30,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:29:30,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:29:30,250 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 11:29:30,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:29:30,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451114495] [2022-09-16 11:29:30,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451114495] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:29:30,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:29:30,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:29:30,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121185567] [2022-09-16 11:29:30,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:29:30,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:29:30,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:29:30,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:29:30,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:29:30,252 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 81 [2022-09-16 11:29:30,253 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 95 transitions, 376 flow. Second operand has 4 states, 4 states have (on average 66.5) internal successors, (266), 4 states have internal predecessors, (266), 0 states have call successors, (0), 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 11:29:30,253 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:29:30,253 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 81 [2022-09-16 11:29:30,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:29:30,415 INFO L130 PetriNetUnfolder]: 233/1132 cut-off events. [2022-09-16 11:29:30,415 INFO L131 PetriNetUnfolder]: For 1182/1258 co-relation queries the response was YES. [2022-09-16 11:29:30,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2661 conditions, 1132 events. 233/1132 cut-off events. For 1182/1258 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 8945 event pairs, 15 based on Foata normal form. 55/1177 useless extension candidates. Maximal degree in co-relation 2611. Up to 206 conditions per place. [2022-09-16 11:29:30,428 INFO L137 encePairwiseOnDemand]: 74/81 looper letters, 30 selfloop transitions, 13 changer transitions 0/112 dead transitions. [2022-09-16 11:29:30,428 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 112 transitions, 551 flow [2022-09-16 11:29:30,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:29:30,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:29:30,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 354 transitions. [2022-09-16 11:29:30,430 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8740740740740741 [2022-09-16 11:29:30,430 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 354 transitions. [2022-09-16 11:29:30,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 354 transitions. [2022-09-16 11:29:30,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:29:30,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 354 transitions. [2022-09-16 11:29:30,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 70.8) internal successors, (354), 5 states have internal predecessors, (354), 0 states have call successors, (0), 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 11:29:30,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 0 states have call successors, (0), 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 11:29:30,432 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 0 states have call successors, (0), 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 11:29:30,432 INFO L175 Difference]: Start difference. First operand has 106 places, 95 transitions, 376 flow. Second operand 5 states and 354 transitions. [2022-09-16 11:29:30,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 112 transitions, 551 flow [2022-09-16 11:29:30,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 112 transitions, 549 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-09-16 11:29:30,439 INFO L231 Difference]: Finished difference. Result has 112 places, 99 transitions, 448 flow [2022-09-16 11:29:30,439 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=448, PETRI_PLACES=112, PETRI_TRANSITIONS=99} [2022-09-16 11:29:30,439 INFO L287 CegarLoopForPetriNet]: 81 programPoint places, 31 predicate places. [2022-09-16 11:29:30,439 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 99 transitions, 448 flow [2022-09-16 11:29:30,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.5) internal successors, (266), 4 states have internal predecessors, (266), 0 states have call successors, (0), 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 11:29:30,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:29:30,440 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] [2022-09-16 11:29:30,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-16 11:29:30,440 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 11:29:30,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:29:30,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1481320491, now seen corresponding path program 1 times [2022-09-16 11:29:30,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:29:30,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160044787] [2022-09-16 11:29:30,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:29:30,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:29:30,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:29:30,471 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 11:29:30,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:29:30,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160044787] [2022-09-16 11:29:30,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160044787] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:29:30,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:29:30,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:29:30,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565193815] [2022-09-16 11:29:30,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:29:30,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:29:30,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:29:30,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:29:30,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:29:30,474 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 81 [2022-09-16 11:29:30,474 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 99 transitions, 448 flow. Second operand has 4 states, 4 states have (on average 66.5) internal successors, (266), 4 states have internal predecessors, (266), 0 states have call successors, (0), 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 11:29:30,474 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:29:30,474 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 81 [2022-09-16 11:29:30,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:29:30,660 INFO L130 PetriNetUnfolder]: 238/1194 cut-off events. [2022-09-16 11:29:30,661 INFO L131 PetriNetUnfolder]: For 1893/1941 co-relation queries the response was YES. [2022-09-16 11:29:30,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2985 conditions, 1194 events. 238/1194 cut-off events. For 1893/1941 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 9355 event pairs, 56 based on Foata normal form. 33/1210 useless extension candidates. Maximal degree in co-relation 2929. Up to 228 conditions per place. [2022-09-16 11:29:30,672 INFO L137 encePairwiseOnDemand]: 75/81 looper letters, 34 selfloop transitions, 13 changer transitions 0/116 dead transitions. [2022-09-16 11:29:30,672 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 116 transitions, 641 flow [2022-09-16 11:29:30,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:29:30,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:29:30,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 358 transitions. [2022-09-16 11:29:30,674 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8839506172839506 [2022-09-16 11:29:30,674 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 358 transitions. [2022-09-16 11:29:30,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 358 transitions. [2022-09-16 11:29:30,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:29:30,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 358 transitions. [2022-09-16 11:29:30,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 71.6) internal successors, (358), 5 states have internal predecessors, (358), 0 states have call successors, (0), 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 11:29:30,676 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 0 states have call successors, (0), 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 11:29:30,676 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 0 states have call successors, (0), 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 11:29:30,676 INFO L175 Difference]: Start difference. First operand has 112 places, 99 transitions, 448 flow. Second operand 5 states and 358 transitions. [2022-09-16 11:29:30,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 116 transitions, 641 flow [2022-09-16 11:29:30,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 116 transitions, 628 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-09-16 11:29:30,683 INFO L231 Difference]: Finished difference. Result has 119 places, 104 transitions, 545 flow [2022-09-16 11:29:30,684 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=545, PETRI_PLACES=119, PETRI_TRANSITIONS=104} [2022-09-16 11:29:30,685 INFO L287 CegarLoopForPetriNet]: 81 programPoint places, 38 predicate places. [2022-09-16 11:29:30,685 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 104 transitions, 545 flow [2022-09-16 11:29:30,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.5) internal successors, (266), 4 states have internal predecessors, (266), 0 states have call successors, (0), 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 11:29:30,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:29:30,685 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] [2022-09-16 11:29:30,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-09-16 11:29:30,685 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 11:29:30,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:29:30,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1481320492, now seen corresponding path program 1 times [2022-09-16 11:29:30,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:29:30,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60841547] [2022-09-16 11:29:30,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:29:30,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:29:30,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:29:30,737 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 11:29:30,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:29:30,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60841547] [2022-09-16 11:29:30,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60841547] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:29:30,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:29:30,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:29:30,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098319479] [2022-09-16 11:29:30,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:29:30,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:29:30,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:29:30,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:29:30,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:29:30,739 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 81 [2022-09-16 11:29:30,740 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 104 transitions, 545 flow. Second operand has 4 states, 4 states have (on average 66.5) internal successors, (266), 4 states have internal predecessors, (266), 0 states have call successors, (0), 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 11:29:30,740 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:29:30,740 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 81 [2022-09-16 11:29:30,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:29:30,867 INFO L130 PetriNetUnfolder]: 137/885 cut-off events. [2022-09-16 11:29:30,868 INFO L131 PetriNetUnfolder]: For 1888/1915 co-relation queries the response was YES. [2022-09-16 11:29:30,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2123 conditions, 885 events. 137/885 cut-off events. For 1888/1915 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 6592 event pairs, 85 based on Foata normal form. 45/919 useless extension candidates. Maximal degree in co-relation 2062. Up to 239 conditions per place. [2022-09-16 11:29:30,879 INFO L137 encePairwiseOnDemand]: 77/81 looper letters, 22 selfloop transitions, 2 changer transitions 0/93 dead transitions. [2022-09-16 11:29:30,879 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 93 transitions, 460 flow [2022-09-16 11:29:30,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:29:30,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:29:30,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 272 transitions. [2022-09-16 11:29:30,881 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8395061728395061 [2022-09-16 11:29:30,881 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 272 transitions. [2022-09-16 11:29:30,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 272 transitions. [2022-09-16 11:29:30,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:29:30,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 272 transitions. [2022-09-16 11:29:30,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 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 11:29:30,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 81.0) internal successors, (405), 5 states have internal predecessors, (405), 0 states have call successors, (0), 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 11:29:30,884 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 81.0) internal successors, (405), 5 states have internal predecessors, (405), 0 states have call successors, (0), 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 11:29:30,884 INFO L175 Difference]: Start difference. First operand has 119 places, 104 transitions, 545 flow. Second operand 4 states and 272 transitions. [2022-09-16 11:29:30,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 93 transitions, 460 flow [2022-09-16 11:29:30,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 93 transitions, 424 flow, removed 9 selfloop flow, removed 6 redundant places. [2022-09-16 11:29:30,892 INFO L231 Difference]: Finished difference. Result has 113 places, 93 transitions, 380 flow [2022-09-16 11:29:30,892 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=380, PETRI_PLACES=113, PETRI_TRANSITIONS=93} [2022-09-16 11:29:30,892 INFO L287 CegarLoopForPetriNet]: 81 programPoint places, 32 predicate places. [2022-09-16 11:29:30,893 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 93 transitions, 380 flow [2022-09-16 11:29:30,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.5) internal successors, (266), 4 states have internal predecessors, (266), 0 states have call successors, (0), 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 11:29:30,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:29:30,894 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:29:30,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-09-16 11:29:30,894 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-09-16 11:29:30,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:29:30,895 INFO L85 PathProgramCache]: Analyzing trace with hash 784336079, now seen corresponding path program 1 times [2022-09-16 11:29:30,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:29:30,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041140659] [2022-09-16 11:29:30,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:29:30,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:29:30,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:29:30,958 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:29:30,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:29:30,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041140659] [2022-09-16 11:29:30,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041140659] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:29:30,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568024221] [2022-09-16 11:29:30,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:29:30,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:29:30,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:29:30,963 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 11:29:30,985 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 11:29:31,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:29:31,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:29:31,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:29:31,100 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:29:31,100 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:29:31,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568024221] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:29:31,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:29:31,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:29:31,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968422410] [2022-09-16 11:29:31,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:29:31,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:29:31,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:29:31,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:29:31,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:29:31,102 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 81 [2022-09-16 11:29:31,103 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 93 transitions, 380 flow. Second operand has 6 states, 6 states have (on average 63.333333333333336) internal successors, (380), 6 states have internal predecessors, (380), 0 states have call successors, (0), 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 11:29:31,103 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:29:31,103 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 81 [2022-09-16 11:29:31,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:29:31,226 INFO L130 PetriNetUnfolder]: 103/522 cut-off events. [2022-09-16 11:29:31,226 INFO L131 PetriNetUnfolder]: For 567/632 co-relation queries the response was YES. [2022-09-16 11:29:31,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1365 conditions, 522 events. 103/522 cut-off events. For 567/632 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3248 event pairs, 14 based on Foata normal form. 30/528 useless extension candidates. Maximal degree in co-relation 1325. Up to 88 conditions per place. [2022-09-16 11:29:31,248 INFO L137 encePairwiseOnDemand]: 76/81 looper letters, 41 selfloop transitions, 6 changer transitions 0/113 dead transitions. [2022-09-16 11:29:31,249 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 113 transitions, 599 flow [2022-09-16 11:29:31,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:29:31,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:29:31,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 457 transitions. [2022-09-16 11:29:31,251 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8059964726631393 [2022-09-16 11:29:31,251 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 457 transitions. [2022-09-16 11:29:31,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 457 transitions. [2022-09-16 11:29:31,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:29:31,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 457 transitions. [2022-09-16 11:29:31,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 65.28571428571429) internal successors, (457), 7 states have internal predecessors, (457), 0 states have call successors, (0), 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 11:29:31,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 81.0) internal successors, (648), 8 states have internal predecessors, (648), 0 states have call successors, (0), 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 11:29:31,254 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 81.0) internal successors, (648), 8 states have internal predecessors, (648), 0 states have call successors, (0), 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 11:29:31,254 INFO L175 Difference]: Start difference. First operand has 113 places, 93 transitions, 380 flow. Second operand 7 states and 457 transitions. [2022-09-16 11:29:31,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 113 transitions, 599 flow [2022-09-16 11:29:31,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 113 transitions, 596 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:29:31,258 INFO L231 Difference]: Finished difference. Result has 116 places, 92 transitions, 385 flow [2022-09-16 11:29:31,258 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=385, PETRI_PLACES=116, PETRI_TRANSITIONS=92} [2022-09-16 11:29:31,259 INFO L287 CegarLoopForPetriNet]: 81 programPoint places, 35 predicate places. [2022-09-16 11:29:31,259 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 92 transitions, 385 flow [2022-09-16 11:29:31,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 63.333333333333336) internal successors, (380), 6 states have internal predecessors, (380), 0 states have call successors, (0), 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 11:29:31,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:29:31,260 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2022-09-16 11:29:31,290 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 11:29:31,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-09-16 11:29:31,474 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-09-16 11:29:31,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:29:31,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1998744924, now seen corresponding path program 1 times [2022-09-16 11:29:31,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:29:31,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021806137] [2022-09-16 11:29:31,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:29:31,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:29:31,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:29:31,501 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:29:31,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:29:31,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021806137] [2022-09-16 11:29:31,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021806137] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:29:31,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:29:31,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:29:31,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653437117] [2022-09-16 11:29:31,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:29:31,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:29:31,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:29:31,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:29:31,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:29:31,503 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 81 [2022-09-16 11:29:31,503 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 92 transitions, 385 flow. Second operand has 4 states, 4 states have (on average 64.5) internal successors, (258), 4 states have internal predecessors, (258), 0 states have call successors, (0), 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 11:29:31,503 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:29:31,503 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 81 [2022-09-16 11:29:31,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:29:31,579 INFO L130 PetriNetUnfolder]: 105/447 cut-off events. [2022-09-16 11:29:31,579 INFO L131 PetriNetUnfolder]: For 656/720 co-relation queries the response was YES. [2022-09-16 11:29:31,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1298 conditions, 447 events. 105/447 cut-off events. For 656/720 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2428 event pairs, 9 based on Foata normal form. 38/465 useless extension candidates. Maximal degree in co-relation 1259. Up to 98 conditions per place. [2022-09-16 11:29:31,585 INFO L137 encePairwiseOnDemand]: 75/81 looper letters, 29 selfloop transitions, 8 changer transitions 0/102 dead transitions. [2022-09-16 11:29:31,585 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 102 transitions, 535 flow [2022-09-16 11:29:31,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:29:31,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:29:31,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 323 transitions. [2022-09-16 11:29:31,586 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7975308641975308 [2022-09-16 11:29:31,586 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 323 transitions. [2022-09-16 11:29:31,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 323 transitions. [2022-09-16 11:29:31,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:29:31,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 323 transitions. [2022-09-16 11:29:31,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 64.6) internal successors, (323), 5 states have internal predecessors, (323), 0 states have call successors, (0), 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 11:29:31,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 0 states have call successors, (0), 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 11:29:31,588 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 0 states have call successors, (0), 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 11:29:31,588 INFO L175 Difference]: Start difference. First operand has 116 places, 92 transitions, 385 flow. Second operand 5 states and 323 transitions. [2022-09-16 11:29:31,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 102 transitions, 535 flow [2022-09-16 11:29:31,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 102 transitions, 524 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-09-16 11:29:31,593 INFO L231 Difference]: Finished difference. Result has 115 places, 92 transitions, 394 flow [2022-09-16 11:29:31,593 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=394, PETRI_PLACES=115, PETRI_TRANSITIONS=92} [2022-09-16 11:29:31,593 INFO L287 CegarLoopForPetriNet]: 81 programPoint places, 34 predicate places. [2022-09-16 11:29:31,593 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 92 transitions, 394 flow [2022-09-16 11:29:31,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.5) internal successors, (258), 4 states have internal predecessors, (258), 0 states have call successors, (0), 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 11:29:31,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:29:31,594 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:29:31,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-09-16 11:29:31,594 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-09-16 11:29:31,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:29:31,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1831550754, now seen corresponding path program 1 times [2022-09-16 11:29:31,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:29:31,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336138980] [2022-09-16 11:29:31,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:29:31,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:29:31,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:29:31,633 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:29:31,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:29:31,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336138980] [2022-09-16 11:29:31,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336138980] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:29:31,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716007124] [2022-09-16 11:29:31,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:29:31,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:29:31,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:29:31,635 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 11:29:31,636 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 11:29:31,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:29:31,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:29:31,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:29:31,771 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:29:31,771 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:29:31,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716007124] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:29:31,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:29:31,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:29:31,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834297299] [2022-09-16 11:29:31,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:29:31,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:29:31,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:29:31,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:29:31,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:29:31,775 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 81 [2022-09-16 11:29:31,776 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 92 transitions, 394 flow. Second operand has 6 states, 6 states have (on average 63.5) internal successors, (381), 6 states have internal predecessors, (381), 0 states have call successors, (0), 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 11:29:31,776 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:29:31,776 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 81 [2022-09-16 11:29:31,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:29:31,887 INFO L130 PetriNetUnfolder]: 82/385 cut-off events. [2022-09-16 11:29:31,887 INFO L131 PetriNetUnfolder]: For 552/578 co-relation queries the response was YES. [2022-09-16 11:29:31,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1165 conditions, 385 events. 82/385 cut-off events. For 552/578 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2091 event pairs, 3 based on Foata normal form. 20/395 useless extension candidates. Maximal degree in co-relation 1127. Up to 79 conditions per place. [2022-09-16 11:29:31,892 INFO L137 encePairwiseOnDemand]: 76/81 looper letters, 36 selfloop transitions, 6 changer transitions 0/107 dead transitions. [2022-09-16 11:29:31,892 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 107 transitions, 585 flow [2022-09-16 11:29:31,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:29:31,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:29:31,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 452 transitions. [2022-09-16 11:29:31,895 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7971781305114638 [2022-09-16 11:29:31,895 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 452 transitions. [2022-09-16 11:29:31,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 452 transitions. [2022-09-16 11:29:31,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:29:31,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 452 transitions. [2022-09-16 11:29:31,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 64.57142857142857) internal successors, (452), 7 states have internal predecessors, (452), 0 states have call successors, (0), 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 11:29:31,897 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 81.0) internal successors, (648), 8 states have internal predecessors, (648), 0 states have call successors, (0), 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 11:29:31,897 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 81.0) internal successors, (648), 8 states have internal predecessors, (648), 0 states have call successors, (0), 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 11:29:31,897 INFO L175 Difference]: Start difference. First operand has 115 places, 92 transitions, 394 flow. Second operand 7 states and 452 transitions. [2022-09-16 11:29:31,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 107 transitions, 585 flow [2022-09-16 11:29:31,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 107 transitions, 573 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 11:29:31,901 INFO L231 Difference]: Finished difference. Result has 117 places, 91 transitions, 390 flow [2022-09-16 11:29:31,902 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=390, PETRI_PLACES=117, PETRI_TRANSITIONS=91} [2022-09-16 11:29:31,902 INFO L287 CegarLoopForPetriNet]: 81 programPoint places, 36 predicate places. [2022-09-16 11:29:31,902 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 91 transitions, 390 flow [2022-09-16 11:29:31,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 63.5) internal successors, (381), 6 states have internal predecessors, (381), 0 states have call successors, (0), 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 11:29:31,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:29:31,903 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2022-09-16 11:29:31,929 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 11:29:32,124 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,SelfDestructingSolverStorable13 [2022-09-16 11:29:32,124 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-09-16 11:29:32,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:29:32,125 INFO L85 PathProgramCache]: Analyzing trace with hash 618251971, now seen corresponding path program 1 times [2022-09-16 11:29:32,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:29:32,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180629501] [2022-09-16 11:29:32,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:29:32,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:29:32,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:29:32,160 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:29:32,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:29:32,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180629501] [2022-09-16 11:29:32,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180629501] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:29:32,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020966768] [2022-09-16 11:29:32,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:29:32,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:29:32,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:29:32,162 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 11:29:32,164 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 11:29:32,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:29:32,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-16 11:29:32,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:29:32,285 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:29:32,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:29:32,350 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:29:32,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020966768] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:29:32,350 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:29:32,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-09-16 11:29:32,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103004251] [2022-09-16 11:29:32,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:29:32,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:29:32,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:29:32,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:29:32,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:29:32,352 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 81 [2022-09-16 11:29:32,353 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 91 transitions, 390 flow. Second operand has 8 states, 8 states have (on average 66.625) internal successors, (533), 8 states have internal predecessors, (533), 0 states have call successors, (0), 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 11:29:32,353 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:29:32,353 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 81 [2022-09-16 11:29:32,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:29:32,537 INFO L130 PetriNetUnfolder]: 148/906 cut-off events. [2022-09-16 11:29:32,537 INFO L131 PetriNetUnfolder]: For 1168/1194 co-relation queries the response was YES. [2022-09-16 11:29:32,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2195 conditions, 906 events. 148/906 cut-off events. For 1168/1194 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 5898 event pairs, 6 based on Foata normal form. 68/968 useless extension candidates. Maximal degree in co-relation 2154. Up to 77 conditions per place. [2022-09-16 11:29:32,552 INFO L137 encePairwiseOnDemand]: 75/81 looper letters, 33 selfloop transitions, 13 changer transitions 0/113 dead transitions. [2022-09-16 11:29:32,552 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 113 transitions, 582 flow [2022-09-16 11:29:32,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-16 11:29:32,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-16 11:29:32,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 557 transitions. [2022-09-16 11:29:32,555 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8595679012345679 [2022-09-16 11:29:32,555 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 557 transitions. [2022-09-16 11:29:32,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 557 transitions. [2022-09-16 11:29:32,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:29:32,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 557 transitions. [2022-09-16 11:29:32,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 69.625) internal successors, (557), 8 states have internal predecessors, (557), 0 states have call successors, (0), 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 11:29:32,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 81.0) internal successors, (729), 9 states have internal predecessors, (729), 0 states have call successors, (0), 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 11:29:32,559 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 81.0) internal successors, (729), 9 states have internal predecessors, (729), 0 states have call successors, (0), 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 11:29:32,559 INFO L175 Difference]: Start difference. First operand has 117 places, 91 transitions, 390 flow. Second operand 8 states and 557 transitions. [2022-09-16 11:29:32,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 113 transitions, 582 flow [2022-09-16 11:29:32,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 113 transitions, 569 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-09-16 11:29:32,565 INFO L231 Difference]: Finished difference. Result has 124 places, 97 transitions, 497 flow [2022-09-16 11:29:32,565 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=497, PETRI_PLACES=124, PETRI_TRANSITIONS=97} [2022-09-16 11:29:32,566 INFO L287 CegarLoopForPetriNet]: 81 programPoint places, 43 predicate places. [2022-09-16 11:29:32,566 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 97 transitions, 497 flow [2022-09-16 11:29:32,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 66.625) internal successors, (533), 8 states have internal predecessors, (533), 0 states have call successors, (0), 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 11:29:32,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:29:32,566 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 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] [2022-09-16 11:29:32,591 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 11:29:32,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:29:32,784 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-09-16 11:29:32,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:29:32,785 INFO L85 PathProgramCache]: Analyzing trace with hash -147926171, now seen corresponding path program 1 times [2022-09-16 11:29:32,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:29:32,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429331836] [2022-09-16 11:29:32,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:29:32,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:29:32,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:29:32,845 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:29:32,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:29:32,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429331836] [2022-09-16 11:29:32,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429331836] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:29:32,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477677781] [2022-09-16 11:29:32,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:29:32,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:29:32,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:29:32,848 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 11:29:32,871 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 11:29:32,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:29:32,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 6 conjunts are in the unsatisfiable core [2022-09-16 11:29:32,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:29:33,014 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:29:33,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:29:33,103 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:29:33,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477677781] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:29:33,103 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:29:33,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-09-16 11:29:33,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264055350] [2022-09-16 11:29:33,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:29:33,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:29:33,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:29:33,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:29:33,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:29:33,106 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 81 [2022-09-16 11:29:33,107 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 97 transitions, 497 flow. Second operand has 12 states, 12 states have (on average 66.5) internal successors, (798), 12 states have internal predecessors, (798), 0 states have call successors, (0), 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 11:29:33,107 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:29:33,107 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 81 [2022-09-16 11:29:33,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:29:33,347 INFO L130 PetriNetUnfolder]: 151/1058 cut-off events. [2022-09-16 11:29:33,347 INFO L131 PetriNetUnfolder]: For 2131/2149 co-relation queries the response was YES. [2022-09-16 11:29:33,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2699 conditions, 1058 events. 151/1058 cut-off events. For 2131/2149 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 6617 event pairs, 3 based on Foata normal form. 60/1114 useless extension candidates. Maximal degree in co-relation 2652. Up to 82 conditions per place. [2022-09-16 11:29:33,359 INFO L137 encePairwiseOnDemand]: 75/81 looper letters, 43 selfloop transitions, 18 changer transitions 0/128 dead transitions. [2022-09-16 11:29:33,359 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 128 transitions, 764 flow [2022-09-16 11:29:33,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-09-16 11:29:33,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-09-16 11:29:33,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 904 transitions. [2022-09-16 11:29:33,362 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8584995251661919 [2022-09-16 11:29:33,362 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 904 transitions. [2022-09-16 11:29:33,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 904 transitions. [2022-09-16 11:29:33,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:29:33,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 904 transitions. [2022-09-16 11:29:33,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 69.53846153846153) internal successors, (904), 13 states have internal predecessors, (904), 0 states have call successors, (0), 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 11:29:33,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 81.0) internal successors, (1134), 14 states have internal predecessors, (1134), 0 states have call successors, (0), 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 11:29:33,366 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 81.0) internal successors, (1134), 14 states have internal predecessors, (1134), 0 states have call successors, (0), 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 11:29:33,367 INFO L175 Difference]: Start difference. First operand has 124 places, 97 transitions, 497 flow. Second operand 13 states and 904 transitions. [2022-09-16 11:29:33,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 128 transitions, 764 flow [2022-09-16 11:29:33,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 128 transitions, 711 flow, removed 21 selfloop flow, removed 3 redundant places. [2022-09-16 11:29:33,373 INFO L231 Difference]: Finished difference. Result has 139 places, 99 transitions, 543 flow [2022-09-16 11:29:33,373 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=543, PETRI_PLACES=139, PETRI_TRANSITIONS=99} [2022-09-16 11:29:33,374 INFO L287 CegarLoopForPetriNet]: 81 programPoint places, 58 predicate places. [2022-09-16 11:29:33,374 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 99 transitions, 543 flow [2022-09-16 11:29:33,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 66.5) internal successors, (798), 12 states have internal predecessors, (798), 0 states have call successors, (0), 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 11:29:33,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:29:33,375 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-09-16 11:29:33,399 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 11:29:33,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-09-16 11:29:33,591 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 11:29:33,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:29:33,592 INFO L85 PathProgramCache]: Analyzing trace with hash -554295953, now seen corresponding path program 1 times [2022-09-16 11:29:33,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:29:33,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056560687] [2022-09-16 11:29:33,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:29:33,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:29:33,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:29:33,674 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:29:33,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:29:33,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056560687] [2022-09-16 11:29:33,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056560687] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:29:33,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401287495] [2022-09-16 11:29:33,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:29:33,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:29:33,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:29:33,675 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 11:29:33,677 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 11:29:33,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:29:33,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 8 conjunts are in the unsatisfiable core [2022-09-16 11:29:33,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:29:33,827 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:29:33,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:29:33,973 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:29:33,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401287495] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:29:33,974 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:29:33,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2022-09-16 11:29:33,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465620192] [2022-09-16 11:29:33,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:29:33,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-09-16 11:29:33,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:29:33,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-09-16 11:29:33,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-09-16 11:29:33,976 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 81 [2022-09-16 11:29:33,977 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 99 transitions, 543 flow. Second operand has 16 states, 16 states have (on average 66.3125) internal successors, (1061), 16 states have internal predecessors, (1061), 0 states have call successors, (0), 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 11:29:33,977 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:29:33,977 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 81 [2022-09-16 11:29:33,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:29:34,341 INFO L130 PetriNetUnfolder]: 203/1426 cut-off events. [2022-09-16 11:29:34,341 INFO L131 PetriNetUnfolder]: For 3210/3244 co-relation queries the response was YES. [2022-09-16 11:29:34,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3663 conditions, 1426 events. 203/1426 cut-off events. For 3210/3244 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 8937 event pairs, 6 based on Foata normal form. 50/1470 useless extension candidates. Maximal degree in co-relation 3610. Up to 118 conditions per place. [2022-09-16 11:29:34,362 INFO L137 encePairwiseOnDemand]: 75/81 looper letters, 53 selfloop transitions, 25 changer transitions 0/145 dead transitions. [2022-09-16 11:29:34,362 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 145 transitions, 944 flow [2022-09-16 11:29:34,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-09-16 11:29:34,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-09-16 11:29:34,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1109 transitions. [2022-09-16 11:29:34,365 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8557098765432098 [2022-09-16 11:29:34,365 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1109 transitions. [2022-09-16 11:29:34,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1109 transitions. [2022-09-16 11:29:34,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:29:34,366 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1109 transitions. [2022-09-16 11:29:34,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 69.3125) internal successors, (1109), 16 states have internal predecessors, (1109), 0 states have call successors, (0), 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 11:29:34,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 81.0) internal successors, (1377), 17 states have internal predecessors, (1377), 0 states have call successors, (0), 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 11:29:34,371 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 81.0) internal successors, (1377), 17 states have internal predecessors, (1377), 0 states have call successors, (0), 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 11:29:34,371 INFO L175 Difference]: Start difference. First operand has 139 places, 99 transitions, 543 flow. Second operand 16 states and 1109 transitions. [2022-09-16 11:29:34,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 145 transitions, 944 flow [2022-09-16 11:29:34,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 145 transitions, 929 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-09-16 11:29:34,382 INFO L231 Difference]: Finished difference. Result has 157 places, 107 transitions, 694 flow [2022-09-16 11:29:34,382 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=694, PETRI_PLACES=157, PETRI_TRANSITIONS=107} [2022-09-16 11:29:34,382 INFO L287 CegarLoopForPetriNet]: 81 programPoint places, 76 predicate places. [2022-09-16 11:29:34,382 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 107 transitions, 694 flow [2022-09-16 11:29:34,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 66.3125) internal successors, (1061), 16 states have internal predecessors, (1061), 0 states have call successors, (0), 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 11:29:34,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:29:34,383 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:29:34,410 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 11:29:34,599 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,SelfDestructingSolverStorable16 [2022-09-16 11:29:34,600 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-09-16 11:29:34,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:29:34,600 INFO L85 PathProgramCache]: Analyzing trace with hash -402443487, now seen corresponding path program 2 times [2022-09-16 11:29:34,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:29:34,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744185303] [2022-09-16 11:29:34,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:29:34,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:29:34,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:29:34,741 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 197 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:29:34,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:29:34,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744185303] [2022-09-16 11:29:34,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744185303] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:29:34,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361083781] [2022-09-16 11:29:34,741 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:29:34,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:29:34,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:29:34,743 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 11:29:34,744 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 11:29:34,824 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-09-16 11:29:34,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:29:34,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 14 conjunts are in the unsatisfiable core [2022-09-16 11:29:34,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:29:34,964 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 197 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:29:34,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:29:35,267 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 197 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:29:35,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [361083781] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:29:35,268 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:29:35,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 27 [2022-09-16 11:29:35,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771601282] [2022-09-16 11:29:35,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:29:35,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-09-16 11:29:35,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:29:35,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-09-16 11:29:35,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=546, Unknown=0, NotChecked=0, Total=756 [2022-09-16 11:29:35,271 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 81 [2022-09-16 11:29:35,272 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 107 transitions, 694 flow. Second operand has 28 states, 28 states have (on average 66.21428571428571) internal successors, (1854), 28 states have internal predecessors, (1854), 0 states have call successors, (0), 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 11:29:35,272 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:29:35,273 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 81 [2022-09-16 11:29:35,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:29:36,116 INFO L130 PetriNetUnfolder]: 314/2190 cut-off events. [2022-09-16 11:29:36,116 INFO L131 PetriNetUnfolder]: For 7172/7196 co-relation queries the response was YES. [2022-09-16 11:29:36,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5788 conditions, 2190 events. 314/2190 cut-off events. For 7172/7196 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 13216 event pairs, 0 based on Foata normal form. 90/2279 useless extension candidates. Maximal degree in co-relation 5727. Up to 187 conditions per place. [2022-09-16 11:29:36,141 INFO L137 encePairwiseOnDemand]: 75/81 looper letters, 91 selfloop transitions, 42 changer transitions 0/200 dead transitions. [2022-09-16 11:29:36,141 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 200 transitions, 1489 flow [2022-09-16 11:29:36,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-09-16 11:29:36,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-09-16 11:29:36,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2013 transitions. [2022-09-16 11:29:36,145 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8569604086845466 [2022-09-16 11:29:36,145 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 2013 transitions. [2022-09-16 11:29:36,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 2013 transitions. [2022-09-16 11:29:36,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:29:36,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 2013 transitions. [2022-09-16 11:29:36,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 69.41379310344827) internal successors, (2013), 29 states have internal predecessors, (2013), 0 states have call successors, (0), 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 11:29:36,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 81.0) internal successors, (2430), 30 states have internal predecessors, (2430), 0 states have call successors, (0), 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 11:29:36,154 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 81.0) internal successors, (2430), 30 states have internal predecessors, (2430), 0 states have call successors, (0), 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 11:29:36,155 INFO L175 Difference]: Start difference. First operand has 157 places, 107 transitions, 694 flow. Second operand 29 states and 2013 transitions. [2022-09-16 11:29:36,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 200 transitions, 1489 flow [2022-09-16 11:29:36,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 200 transitions, 1407 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-09-16 11:29:36,173 INFO L231 Difference]: Finished difference. Result has 191 places, 123 transitions, 956 flow [2022-09-16 11:29:36,173 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=644, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=956, PETRI_PLACES=191, PETRI_TRANSITIONS=123} [2022-09-16 11:29:36,173 INFO L287 CegarLoopForPetriNet]: 81 programPoint places, 110 predicate places. [2022-09-16 11:29:36,173 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 123 transitions, 956 flow [2022-09-16 11:29:36,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 66.21428571428571) internal successors, (1854), 28 states have internal predecessors, (1854), 0 states have call successors, (0), 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 11:29:36,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:29:36,174 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:29:36,202 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 11:29:36,387 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,SelfDestructingSolverStorable17 [2022-09-16 11:29:36,388 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-09-16 11:29:36,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:29:36,388 INFO L85 PathProgramCache]: Analyzing trace with hash -591193399, now seen corresponding path program 2 times [2022-09-16 11:29:36,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:29:36,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217888572] [2022-09-16 11:29:36,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:29:36,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:29:36,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:29:36,673 INFO L134 CoverageAnalysis]: Checked inductivity of 742 backedges. 0 proven. 742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:29:36,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:29:36,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217888572] [2022-09-16 11:29:36,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217888572] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:29:36,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648811026] [2022-09-16 11:29:36,673 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:29:36,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:29:36,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:29:36,676 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 11:29:36,677 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 11:29:36,773 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-09-16 11:29:36,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:29:36,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 22 conjunts are in the unsatisfiable core [2022-09-16 11:29:36,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:29:37,278 INFO L134 CoverageAnalysis]: Checked inductivity of 742 backedges. 733 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-09-16 11:29:37,279 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:29:37,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648811026] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:29:37,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:29:37,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [24] total 46 [2022-09-16 11:29:37,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650422396] [2022-09-16 11:29:37,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:29:37,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 11:29:37,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:29:37,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 11:29:37,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=310, Invalid=1760, Unknown=0, NotChecked=0, Total=2070 [2022-09-16 11:29:37,282 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 81 [2022-09-16 11:29:37,284 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 123 transitions, 956 flow. Second operand has 23 states, 23 states have (on average 65.0) internal successors, (1495), 23 states have internal predecessors, (1495), 0 states have call successors, (0), 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 11:29:37,284 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:29:37,284 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 81 [2022-09-16 11:29:37,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:29:39,042 INFO L130 PetriNetUnfolder]: 1803/4970 cut-off events. [2022-09-16 11:29:39,042 INFO L131 PetriNetUnfolder]: For 25167/25183 co-relation queries the response was YES. [2022-09-16 11:29:39,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19919 conditions, 4970 events. 1803/4970 cut-off events. For 25167/25183 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 38426 event pairs, 2 based on Foata normal form. 51/4793 useless extension candidates. Maximal degree in co-relation 19867. Up to 1546 conditions per place. [2022-09-16 11:29:39,095 INFO L137 encePairwiseOnDemand]: 75/81 looper letters, 0 selfloop transitions, 0 changer transitions 624/624 dead transitions. [2022-09-16 11:29:39,095 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 624 transitions, 7732 flow [2022-09-16 11:29:39,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-09-16 11:29:39,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-09-16 11:29:39,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 2160 transitions. [2022-09-16 11:29:39,098 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8080808080808081 [2022-09-16 11:29:39,099 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 2160 transitions. [2022-09-16 11:29:39,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 2160 transitions. [2022-09-16 11:29:39,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:29:39,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 2160 transitions. [2022-09-16 11:29:39,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 65.45454545454545) internal successors, (2160), 33 states have internal predecessors, (2160), 0 states have call successors, (0), 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 11:29:39,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 81.0) internal successors, (2754), 34 states have internal predecessors, (2754), 0 states have call successors, (0), 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 11:29:39,106 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 81.0) internal successors, (2754), 34 states have internal predecessors, (2754), 0 states have call successors, (0), 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 11:29:39,107 INFO L175 Difference]: Start difference. First operand has 191 places, 123 transitions, 956 flow. Second operand 33 states and 2160 transitions. [2022-09-16 11:29:39,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 624 transitions, 7732 flow [2022-09-16 11:29:39,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 624 transitions, 5412 flow, removed 32 selfloop flow, removed 49 redundant places. [2022-09-16 11:29:39,176 INFO L231 Difference]: Finished difference. Result has 169 places, 0 transitions, 0 flow [2022-09-16 11:29:39,176 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=0, PETRI_PLACES=169, PETRI_TRANSITIONS=0} [2022-09-16 11:29:39,176 INFO L287 CegarLoopForPetriNet]: 81 programPoint places, 88 predicate places. [2022-09-16 11:29:39,177 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 0 transitions, 0 flow [2022-09-16 11:29:39,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 65.0) internal successors, (1495), 23 states have internal predecessors, (1495), 0 states have call successors, (0), 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 11:29:39,179 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2022-09-16 11:29:39,180 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 18 remaining) [2022-09-16 11:29:39,180 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2022-09-16 11:29:39,180 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2022-09-16 11:29:39,180 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2022-09-16 11:29:39,180 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2022-09-16 11:29:39,180 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2022-09-16 11:29:39,180 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2022-09-16 11:29:39,181 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2022-09-16 11:29:39,181 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2022-09-16 11:29:39,181 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2022-09-16 11:29:39,181 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2022-09-16 11:29:39,181 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2022-09-16 11:29:39,181 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2022-09-16 11:29:39,181 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2022-09-16 11:29:39,181 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2022-09-16 11:29:39,181 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2022-09-16 11:29:39,181 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2022-09-16 11:29:39,209 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 11:29:39,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:29:39,407 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:29:39,411 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-09-16 11:29:39,411 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-09-16 11:29:39,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 11:29:39 BasicIcfg [2022-09-16 11:29:39,416 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-09-16 11:29:39,416 INFO L158 Benchmark]: Toolchain (without parser) took 12236.94ms. Allocated memory was 178.3MB in the beginning and 374.3MB in the end (delta: 196.1MB). Free memory was 120.7MB in the beginning and 205.1MB in the end (delta: -84.4MB). Peak memory consumption was 225.5MB. Max. memory is 8.0GB. [2022-09-16 11:29:39,416 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 178.3MB. Free memory is still 138.8MB. There was no memory consumed. Max. memory is 8.0GB. [2022-09-16 11:29:39,417 INFO L158 Benchmark]: CACSL2BoogieTranslator took 468.08ms. Allocated memory is still 178.3MB. Free memory was 120.7MB in the beginning and 143.6MB in the end (delta: -22.9MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-09-16 11:29:39,417 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.69ms. Allocated memory is still 178.3MB. Free memory was 143.6MB in the beginning and 141.9MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-09-16 11:29:39,417 INFO L158 Benchmark]: Boogie Preprocessor took 30.90ms. Allocated memory is still 178.3MB. Free memory was 141.9MB in the beginning and 140.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-16 11:29:39,417 INFO L158 Benchmark]: RCFGBuilder took 393.15ms. Allocated memory is still 178.3MB. Free memory was 140.5MB in the beginning and 127.2MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-09-16 11:29:39,417 INFO L158 Benchmark]: TraceAbstraction took 11289.59ms. Allocated memory was 178.3MB in the beginning and 374.3MB in the end (delta: 196.1MB). Free memory was 126.5MB in the beginning and 205.1MB in the end (delta: -78.6MB). Peak memory consumption was 231.7MB. Max. memory is 8.0GB. [2022-09-16 11:29:39,419 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 178.3MB. Free memory is still 138.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 468.08ms. Allocated memory is still 178.3MB. Free memory was 120.7MB in the beginning and 143.6MB in the end (delta: -22.9MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 47.69ms. Allocated memory is still 178.3MB. Free memory was 143.6MB in the beginning and 141.9MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 30.90ms. Allocated memory is still 178.3MB. Free memory was 141.9MB in the beginning and 140.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 393.15ms. Allocated memory is still 178.3MB. Free memory was 140.5MB in the beginning and 127.2MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 11289.59ms. Allocated memory was 178.3MB in the beginning and 374.3MB in the end (delta: 196.1MB). Free memory was 126.5MB in the beginning and 205.1MB in the end (delta: -78.6MB). Peak memory consumption was 231.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 698]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 698]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 696]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 696]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 706]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 706]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 704]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 704]: 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, 111 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: 11.1s, OverallIterations: 19, TraceHistogramMax: 12, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 5.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 675 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 675 mSDsluCounter, 163 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 433 mSDsCounter, 295 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1328 IncrementalHoareTripleChecker+Invalid, 1623 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 295 mSolverCounterUnsat, 73 mSDtfsCounter, 1328 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1033 GetRequests, 817 SyntacticMatches, 0 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1553 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=956occurred in iteration=18, InterpolantAutomatonStates: 164, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 1514 NumberOfCodeBlocks, 1514 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 1772 ConstructedInterpolants, 0 QuantifiedInterpolants, 4400 SizeOfPredicates, 50 NumberOfNonLiveVariables, 1335 ConjunctsInSsa, 64 ConjunctsInUnsatCore, 30 InterpolantComputations, 15 PerfectInterpolantSequences, 760/2262 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 11:29:39,445 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...