/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/weaver/popl20-more-buffer-series.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:57:38,814 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:57:38,816 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:57:38,844 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 11:57:38,845 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 11:57:38,846 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 11:57:38,847 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 11:57:38,848 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 11:57:38,849 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 11:57:38,850 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 11:57:38,851 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 11:57:38,852 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 11:57:38,852 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:57:38,853 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:57:38,853 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:57:38,854 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:57:38,855 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:57:38,856 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:57:38,857 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:57:38,859 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:57:38,860 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:57:38,861 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:57:38,862 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:57:38,863 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:57:38,866 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-09-16 11:57:38,868 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 11:57:38,869 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 11:57:38,869 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 11:57:38,870 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 11:57:38,871 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 11:57:38,871 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 11:57:38,872 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 11:57:38,872 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 11:57:38,872 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:57:38,873 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:57:38,873 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:57:38,875 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 11:57:38,906 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:57:38,906 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:57:38,907 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:57:38,907 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:57:38,908 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:57:38,908 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:57:38,908 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:57:38,908 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:57:38,908 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:57:38,908 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:57:38,909 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:57:38,909 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:57:38,909 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:57:38,909 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:57:38,910 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:57:38,910 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:57:38,910 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:57:38,910 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:57:38,910 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:57:38,910 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:57:38,910 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:57:38,911 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:57:38,911 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:57:38,911 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:57:38,911 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:57:38,911 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:57:38,912 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:57:38,912 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:57:38,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:57:38,913 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:57:38,913 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 11:57:38,913 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:57:39,138 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:57:39,155 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:57:39,157 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:57:39,157 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:57:39,159 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:57:39,159 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-buffer-series.wvr.c [2022-09-16 11:57:39,226 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/598928d76/5b9822c47c8b4dec88ac83e13964f0c6/FLAG514ee6e82 [2022-09-16 11:57:39,612 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:57:39,613 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-series.wvr.c [2022-09-16 11:57:39,624 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/598928d76/5b9822c47c8b4dec88ac83e13964f0c6/FLAG514ee6e82 [2022-09-16 11:57:40,012 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/598928d76/5b9822c47c8b4dec88ac83e13964f0c6 [2022-09-16 11:57:40,014 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:57:40,015 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:57:40,017 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:57:40,017 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:57:40,039 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:57:40,040 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:57:40" (1/1) ... [2022-09-16 11:57:40,043 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a6cb7e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:57:40, skipping insertion in model container [2022-09-16 11:57:40,043 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:57:40" (1/1) ... [2022-09-16 11:57:40,049 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:57:40,079 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:57:40,260 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-series.wvr.c[4351,4364] [2022-09-16 11:57:40,275 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:57:40,281 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:57:40,308 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-series.wvr.c[4351,4364] [2022-09-16 11:57:40,311 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:57:40,324 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:57:40,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:57:40 WrapperNode [2022-09-16 11:57:40,324 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:57:40,325 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:57:40,325 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:57:40,326 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:57:40,331 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:57:40" (1/1) ... [2022-09-16 11:57:40,339 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:57:40" (1/1) ... [2022-09-16 11:57:40,375 INFO L138 Inliner]: procedures = 27, calls = 87, calls flagged for inlining = 22, calls inlined = 28, statements flattened = 398 [2022-09-16 11:57:40,375 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:57:40,376 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:57:40,376 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:57:40,376 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:57:40,390 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:57:40" (1/1) ... [2022-09-16 11:57:40,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:57:40" (1/1) ... [2022-09-16 11:57:40,403 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:57:40" (1/1) ... [2022-09-16 11:57:40,403 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:57:40" (1/1) ... [2022-09-16 11:57:40,427 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:57:40" (1/1) ... [2022-09-16 11:57:40,432 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:57:40" (1/1) ... [2022-09-16 11:57:40,434 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:57:40" (1/1) ... [2022-09-16 11:57:40,437 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:57:40,438 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:57:40,438 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:57:40,438 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:57:40,459 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:57:40" (1/1) ... [2022-09-16 11:57:40,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:57:40,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:57:40,485 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 11:57:40,488 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 11:57:40,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:57:40,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:57:40,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:57:40,520 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 11:57:40,520 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-16 11:57:40,520 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-16 11:57:40,520 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-16 11:57:40,521 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-16 11:57:40,521 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-16 11:57:40,521 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-16 11:57:40,521 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-09-16 11:57:40,521 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-09-16 11:57:40,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:57:40,521 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-16 11:57:40,522 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-16 11:57:40,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-16 11:57:40,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:57:40,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:57:40,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:57:40,523 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 11:57:40,665 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:57:40,666 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:57:41,120 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:57:41,512 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:57:41,513 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2022-09-16 11:57:41,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:57:41 BoogieIcfgContainer [2022-09-16 11:57:41,516 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:57:41,518 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:57:41,518 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:57:41,521 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:57:41,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:57:40" (1/3) ... [2022-09-16 11:57:41,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29ebe76b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:57:41, skipping insertion in model container [2022-09-16 11:57:41,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:57:40" (2/3) ... [2022-09-16 11:57:41,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29ebe76b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:57:41, skipping insertion in model container [2022-09-16 11:57:41,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:57:41" (3/3) ... [2022-09-16 11:57:41,524 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-series.wvr.c [2022-09-16 11:57:41,540 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:57:41,540 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2022-09-16 11:57:41,540 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:57:41,690 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-09-16 11:57:41,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 295 places, 304 transitions, 640 flow [2022-09-16 11:57:41,869 INFO L130 PetriNetUnfolder]: 22/300 cut-off events. [2022-09-16 11:57:41,869 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-09-16 11:57:41,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 317 conditions, 300 events. 22/300 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 304 event pairs, 0 based on Foata normal form. 0/246 useless extension candidates. Maximal degree in co-relation 254. Up to 2 conditions per place. [2022-09-16 11:57:41,876 INFO L82 GeneralOperation]: Start removeDead. Operand has 295 places, 304 transitions, 640 flow [2022-09-16 11:57:41,885 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 269 places, 277 transitions, 575 flow [2022-09-16 11:57:41,898 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:57:41,905 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;@f41a7ab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:57:41,905 INFO L358 AbstractCegarLoop]: Starting to check reachability of 62 error locations. [2022-09-16 11:57:41,921 INFO L130 PetriNetUnfolder]: 3/83 cut-off events. [2022-09-16 11:57:41,921 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:57:41,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:57:41,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:57:41,923 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2022-09-16 11:57:41,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:57:41,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1762565349, now seen corresponding path program 1 times [2022-09-16 11:57:41,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:57:41,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554091380] [2022-09-16 11:57:41,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:57:41,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:57:42,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:57:42,196 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 11:57:42,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:57:42,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554091380] [2022-09-16 11:57:42,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554091380] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:57:42,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:57:42,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:57:42,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517582927] [2022-09-16 11:57:42,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:57:42,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:57:42,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:57:42,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:57:42,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:57:42,240 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 304 [2022-09-16 11:57:42,246 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 277 transitions, 575 flow. Second operand has 4 states, 4 states have (on average 213.5) internal successors, (854), 4 states have internal predecessors, (854), 0 states have call successors, (0), 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 11:57:42,246 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:57:42,246 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 304 [2022-09-16 11:57:42,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:57:47,556 INFO L130 PetriNetUnfolder]: 16171/24213 cut-off events. [2022-09-16 11:57:47,557 INFO L131 PetriNetUnfolder]: For 4692/4694 co-relation queries the response was YES. [2022-09-16 11:57:47,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46953 conditions, 24213 events. 16171/24213 cut-off events. For 4692/4694 co-relation queries the response was YES. Maximal size of possible extension queue 1420. Compared 166547 event pairs, 9734 based on Foata normal form. 4428/15035 useless extension candidates. Maximal degree in co-relation 22925. Up to 10183 conditions per place. [2022-09-16 11:57:47,856 INFO L137 encePairwiseOnDemand]: 259/304 looper letters, 104 selfloop transitions, 14 changer transitions 7/306 dead transitions. [2022-09-16 11:57:47,857 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 306 transitions, 890 flow [2022-09-16 11:57:47,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:57:47,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:57:47,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1228 transitions. [2022-09-16 11:57:47,878 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8078947368421052 [2022-09-16 11:57:47,879 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1228 transitions. [2022-09-16 11:57:47,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1228 transitions. [2022-09-16 11:57:47,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:57:47,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1228 transitions. [2022-09-16 11:57:47,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 245.6) internal successors, (1228), 5 states have internal predecessors, (1228), 0 states have call successors, (0), 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 11:57:47,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 304.0) internal successors, (1824), 6 states have internal predecessors, (1824), 0 states have call successors, (0), 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 11:57:47,904 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 304.0) internal successors, (1824), 6 states have internal predecessors, (1824), 0 states have call successors, (0), 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 11:57:47,905 INFO L175 Difference]: Start difference. First operand has 269 places, 277 transitions, 575 flow. Second operand 5 states and 1228 transitions. [2022-09-16 11:57:47,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 306 transitions, 890 flow [2022-09-16 11:57:47,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 306 transitions, 864 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-09-16 11:57:47,928 INFO L231 Difference]: Finished difference. Result has 258 places, 256 transitions, 602 flow [2022-09-16 11:57:47,930 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=602, PETRI_PLACES=258, PETRI_TRANSITIONS=256} [2022-09-16 11:57:47,933 INFO L287 CegarLoopForPetriNet]: 269 programPoint places, -11 predicate places. [2022-09-16 11:57:47,933 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 256 transitions, 602 flow [2022-09-16 11:57:47,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 213.5) internal successors, (854), 4 states have internal predecessors, (854), 0 states have call successors, (0), 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 11:57:47,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:57:47,934 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:57:47,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:57:47,935 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2022-09-16 11:57:47,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:57:47,936 INFO L85 PathProgramCache]: Analyzing trace with hash -54071210, now seen corresponding path program 1 times [2022-09-16 11:57:47,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:57:47,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369878959] [2022-09-16 11:57:47,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:57:47,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:57:47,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:57:48,063 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:57:48,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:57:48,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369878959] [2022-09-16 11:57:48,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369878959] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:57:48,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664310964] [2022-09-16 11:57:48,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:57:48,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:57:48,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:57:48,071 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 11:57:48,115 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 11:57:48,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:57:48,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:57:48,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:57:48,317 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:57:48,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:57:48,394 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:57:48,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664310964] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:57:48,395 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:57:48,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-09-16 11:57:48,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816130827] [2022-09-16 11:57:48,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:57:48,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:57:48,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:57:48,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:57:48,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:57:48,400 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 304 [2022-09-16 11:57:48,409 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 256 transitions, 602 flow. Second operand has 12 states, 12 states have (on average 214.66666666666666) internal successors, (2576), 12 states have internal predecessors, (2576), 0 states have call successors, (0), 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 11:57:48,410 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:57:48,410 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 304 [2022-09-16 11:57:48,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:57:58,468 INFO L130 PetriNetUnfolder]: 40426/60358 cut-off events. [2022-09-16 11:57:58,469 INFO L131 PetriNetUnfolder]: For 3543/3548 co-relation queries the response was YES. [2022-09-16 11:57:58,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113591 conditions, 60358 events. 40426/60358 cut-off events. For 3543/3548 co-relation queries the response was YES. Maximal size of possible extension queue 1571. Compared 436554 event pairs, 24335 based on Foata normal form. 9/26387 useless extension candidates. Maximal degree in co-relation 90500. Up to 10174 conditions per place. [2022-09-16 11:57:59,156 INFO L137 encePairwiseOnDemand]: 281/304 looper letters, 224 selfloop transitions, 62 changer transitions 0/467 dead transitions. [2022-09-16 11:57:59,156 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 467 transitions, 1706 flow [2022-09-16 11:57:59,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:57:59,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-16 11:57:59,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4111 transitions. [2022-09-16 11:57:59,165 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7512792397660819 [2022-09-16 11:57:59,165 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4111 transitions. [2022-09-16 11:57:59,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4111 transitions. [2022-09-16 11:57:59,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:57:59,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4111 transitions. [2022-09-16 11:57:59,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 228.38888888888889) internal successors, (4111), 18 states have internal predecessors, (4111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:59,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 304.0) internal successors, (5776), 19 states have internal predecessors, (5776), 0 states have call successors, (0), 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 11:57:59,187 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 304.0) internal successors, (5776), 19 states have internal predecessors, (5776), 0 states have call successors, (0), 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 11:57:59,187 INFO L175 Difference]: Start difference. First operand has 258 places, 256 transitions, 602 flow. Second operand 18 states and 4111 transitions. [2022-09-16 11:57:59,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 467 transitions, 1706 flow [2022-09-16 11:57:59,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 467 transitions, 1698 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:57:59,200 INFO L231 Difference]: Finished difference. Result has 271 places, 298 transitions, 964 flow [2022-09-16 11:57:59,201 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=594, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=964, PETRI_PLACES=271, PETRI_TRANSITIONS=298} [2022-09-16 11:57:59,202 INFO L287 CegarLoopForPetriNet]: 269 programPoint places, 2 predicate places. [2022-09-16 11:57:59,202 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 298 transitions, 964 flow [2022-09-16 11:57:59,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 214.66666666666666) internal successors, (2576), 12 states have internal predecessors, (2576), 0 states have call successors, (0), 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 11:57:59,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:57:59,204 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:57:59,228 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-09-16 11:57:59,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:57:59,428 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2022-09-16 11:57:59,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:57:59,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1676206516, now seen corresponding path program 1 times [2022-09-16 11:57:59,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:57:59,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848500813] [2022-09-16 11:57:59,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:57:59,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:57:59,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:57:59,518 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:57:59,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:57:59,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848500813] [2022-09-16 11:57:59,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848500813] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:57:59,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227943499] [2022-09-16 11:57:59,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:57:59,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:57:59,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:57:59,521 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 11:57:59,522 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 11:57:59,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:57:59,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:57:59,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:57:59,702 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:57:59,702 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:57:59,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227943499] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:57:59,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:57:59,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:57:59,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626061585] [2022-09-16 11:57:59,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:57:59,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:57:59,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:57:59,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:57:59,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:57:59,706 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 304 [2022-09-16 11:57:59,707 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 298 transitions, 964 flow. Second operand has 6 states, 6 states have (on average 214.33333333333334) internal successors, (1286), 6 states have internal predecessors, (1286), 0 states have call successors, (0), 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 11:57:59,708 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:57:59,708 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 304 [2022-09-16 11:57:59,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:58:09,209 INFO L130 PetriNetUnfolder]: 40426/60346 cut-off events. [2022-09-16 11:58:09,210 INFO L131 PetriNetUnfolder]: For 3695/3700 co-relation queries the response was YES. [2022-09-16 11:58:09,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113647 conditions, 60346 events. 40426/60346 cut-off events. For 3695/3700 co-relation queries the response was YES. Maximal size of possible extension queue 1571. Compared 435519 event pairs, 24335 based on Foata normal form. 12/26378 useless extension candidates. Maximal degree in co-relation 90875. Up to 40624 conditions per place. [2022-09-16 11:58:09,675 INFO L137 encePairwiseOnDemand]: 287/304 looper letters, 105 selfloop transitions, 43 changer transitions 0/329 dead transitions. [2022-09-16 11:58:09,676 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 329 transitions, 1279 flow [2022-09-16 11:58:09,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:58:09,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:58:09,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1602 transitions. [2022-09-16 11:58:09,684 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7528195488721805 [2022-09-16 11:58:09,684 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1602 transitions. [2022-09-16 11:58:09,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1602 transitions. [2022-09-16 11:58:09,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:58:09,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1602 transitions. [2022-09-16 11:58:09,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 228.85714285714286) internal successors, (1602), 7 states have internal predecessors, (1602), 0 states have call successors, (0), 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 11:58:09,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 304.0) internal successors, (2432), 8 states have internal predecessors, (2432), 0 states have call successors, (0), 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 11:58:09,692 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 304.0) internal successors, (2432), 8 states have internal predecessors, (2432), 0 states have call successors, (0), 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 11:58:09,692 INFO L175 Difference]: Start difference. First operand has 271 places, 298 transitions, 964 flow. Second operand 7 states and 1602 transitions. [2022-09-16 11:58:09,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 329 transitions, 1279 flow [2022-09-16 11:58:09,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 329 transitions, 1163 flow, removed 41 selfloop flow, removed 5 redundant places. [2022-09-16 11:58:09,701 INFO L231 Difference]: Finished difference. Result has 265 places, 286 transitions, 853 flow [2022-09-16 11:58:09,701 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=767, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=853, PETRI_PLACES=265, PETRI_TRANSITIONS=286} [2022-09-16 11:58:09,703 INFO L287 CegarLoopForPetriNet]: 269 programPoint places, -4 predicate places. [2022-09-16 11:58:09,703 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 286 transitions, 853 flow [2022-09-16 11:58:09,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 214.33333333333334) internal successors, (1286), 6 states have internal predecessors, (1286), 0 states have call successors, (0), 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 11:58:09,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:58:09,704 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:58:09,728 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 11:58:09,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-09-16 11:58:09,928 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2022-09-16 11:58:09,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:58:09,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1028279515, now seen corresponding path program 2 times [2022-09-16 11:58:09,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:58:09,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086864584] [2022-09-16 11:58:09,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:58:09,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:58:09,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:58:10,091 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:58:10,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:58:10,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086864584] [2022-09-16 11:58:10,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086864584] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:58:10,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089824652] [2022-09-16 11:58:10,092 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:58:10,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:58:10,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:58:10,093 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 11:58:10,096 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 11:58:10,233 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:58:10,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:58:10,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 7 conjunts are in the unsatisfiable core [2022-09-16 11:58:10,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:58:10,402 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 11:58:10,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:58:10,552 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 11:58:10,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089824652] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:58:10,553 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:58:10,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-09-16 11:58:10,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090297529] [2022-09-16 11:58:10,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:58:10,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-16 11:58:10,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:58:10,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-16 11:58:10,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-09-16 11:58:10,558 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 304 [2022-09-16 11:58:10,563 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 286 transitions, 853 flow. Second operand has 18 states, 18 states have (on average 195.61111111111111) internal successors, (3521), 18 states have internal predecessors, (3521), 0 states have call successors, (0), 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 11:58:10,563 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:58:10,563 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 304 [2022-09-16 11:58:10,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:58:22,266 INFO L130 PetriNetUnfolder]: 48056/73418 cut-off events. [2022-09-16 11:58:22,266 INFO L131 PetriNetUnfolder]: For 4445/4452 co-relation queries the response was YES. [2022-09-16 11:58:22,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137039 conditions, 73418 events. 48056/73418 cut-off events. For 4445/4452 co-relation queries the response was YES. Maximal size of possible extension queue 1363. Compared 545739 event pairs, 28973 based on Foata normal form. 6/33377 useless extension candidates. Maximal degree in co-relation 116898. Up to 8673 conditions per place. [2022-09-16 11:58:22,832 INFO L137 encePairwiseOnDemand]: 275/304 looper letters, 304 selfloop transitions, 97 changer transitions 0/562 dead transitions. [2022-09-16 11:58:22,833 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 562 transitions, 2356 flow [2022-09-16 11:58:22,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-09-16 11:58:22,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-09-16 11:58:22,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 9822 transitions. [2022-09-16 11:58:22,853 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6593716433941997 [2022-09-16 11:58:22,853 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 9822 transitions. [2022-09-16 11:58:22,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 9822 transitions. [2022-09-16 11:58:22,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:58:22,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 9822 transitions. [2022-09-16 11:58:22,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 200.44897959183675) internal successors, (9822), 49 states have internal predecessors, (9822), 0 states have call successors, (0), 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 11:58:22,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 304.0) internal successors, (15200), 50 states have internal predecessors, (15200), 0 states have call successors, (0), 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 11:58:22,916 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 304.0) internal successors, (15200), 50 states have internal predecessors, (15200), 0 states have call successors, (0), 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 11:58:22,916 INFO L175 Difference]: Start difference. First operand has 265 places, 286 transitions, 853 flow. Second operand 49 states and 9822 transitions. [2022-09-16 11:58:22,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 562 transitions, 2356 flow [2022-09-16 11:58:22,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 562 transitions, 2287 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:58:22,926 INFO L231 Difference]: Finished difference. Result has 310 places, 325 transitions, 1194 flow [2022-09-16 11:58:22,926 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=787, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=1194, PETRI_PLACES=310, PETRI_TRANSITIONS=325} [2022-09-16 11:58:22,927 INFO L287 CegarLoopForPetriNet]: 269 programPoint places, 41 predicate places. [2022-09-16 11:58:22,927 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 325 transitions, 1194 flow [2022-09-16 11:58:22,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 195.61111111111111) internal successors, (3521), 18 states have internal predecessors, (3521), 0 states have call successors, (0), 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 11:58:22,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:58:22,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:58:22,945 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 11:58:23,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:58:23,129 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2022-09-16 11:58:23,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:58:23,130 INFO L85 PathProgramCache]: Analyzing trace with hash -40991350, now seen corresponding path program 1 times [2022-09-16 11:58:23,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:58:23,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403258130] [2022-09-16 11:58:23,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:58:23,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:58:23,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:58:23,205 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 11:58:23,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:58:23,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403258130] [2022-09-16 11:58:23,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403258130] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:58:23,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:58:23,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-16 11:58:23,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381859330] [2022-09-16 11:58:23,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:58:23,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:58:23,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:58:23,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:58:23,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:58:23,208 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 304 [2022-09-16 11:58:23,208 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 325 transitions, 1194 flow. Second operand has 3 states, 3 states have (on average 244.66666666666666) internal successors, (734), 3 states have internal predecessors, (734), 0 states have call successors, (0), 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 11:58:23,208 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:58:23,208 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 304 [2022-09-16 11:58:23,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:58:41,573 INFO L130 PetriNetUnfolder]: 72528/115201 cut-off events. [2022-09-16 11:58:41,574 INFO L131 PetriNetUnfolder]: For 5849/5849 co-relation queries the response was YES. [2022-09-16 11:58:42,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217185 conditions, 115201 events. 72528/115201 cut-off events. For 5849/5849 co-relation queries the response was YES. Maximal size of possible extension queue 2320. Compared 1028260 event pairs, 55902 based on Foata normal form. 0/59922 useless extension candidates. Maximal degree in co-relation 216898. Up to 60348 conditions per place. [2022-09-16 11:58:42,564 INFO L137 encePairwiseOnDemand]: 300/304 looper letters, 56 selfloop transitions, 2 changer transitions 0/351 dead transitions. [2022-09-16 11:58:42,564 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 351 transitions, 1369 flow [2022-09-16 11:58:42,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:58:42,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:58:42,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 789 transitions. [2022-09-16 11:58:42,566 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8651315789473685 [2022-09-16 11:58:42,567 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 789 transitions. [2022-09-16 11:58:42,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 789 transitions. [2022-09-16 11:58:42,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:58:42,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 789 transitions. [2022-09-16 11:58:42,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 263.0) internal successors, (789), 3 states have internal predecessors, (789), 0 states have call successors, (0), 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 11:58:42,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 304.0) internal successors, (1216), 4 states have internal predecessors, (1216), 0 states have call successors, (0), 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 11:58:42,570 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 304.0) internal successors, (1216), 4 states have internal predecessors, (1216), 0 states have call successors, (0), 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 11:58:42,570 INFO L175 Difference]: Start difference. First operand has 310 places, 325 transitions, 1194 flow. Second operand 3 states and 789 transitions. [2022-09-16 11:58:42,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 351 transitions, 1369 flow [2022-09-16 11:58:42,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 351 transitions, 1246 flow, removed 16 selfloop flow, removed 15 redundant places. [2022-09-16 11:58:42,578 INFO L231 Difference]: Finished difference. Result has 298 places, 326 transitions, 1085 flow [2022-09-16 11:58:42,579 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=1071, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1085, PETRI_PLACES=298, PETRI_TRANSITIONS=326} [2022-09-16 11:58:42,580 INFO L287 CegarLoopForPetriNet]: 269 programPoint places, 29 predicate places. [2022-09-16 11:58:42,580 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 326 transitions, 1085 flow [2022-09-16 11:58:42,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 244.66666666666666) internal successors, (734), 3 states have internal predecessors, (734), 0 states have call successors, (0), 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 11:58:42,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:58:42,580 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:58:42,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-16 11:58:42,581 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2022-09-16 11:58:42,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:58:42,581 INFO L85 PathProgramCache]: Analyzing trace with hash -491340124, now seen corresponding path program 1 times [2022-09-16 11:58:42,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:58:42,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992534729] [2022-09-16 11:58:42,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:58:42,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:58:42,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:58:42,647 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:58:42,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:58:42,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992534729] [2022-09-16 11:58:42,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992534729] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:58:42,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151157075] [2022-09-16 11:58:42,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:58:42,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:58:42,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:58:42,650 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 11:58:42,652 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 11:58:42,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:58:42,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:58:42,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:58:42,937 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:58:42,937 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:58:42,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151157075] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:58:42,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:58:42,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [3] total 8 [2022-09-16 11:58:42,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981335233] [2022-09-16 11:58:42,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:58:42,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:58:42,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:58:42,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:58:42,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:58:42,942 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 304 [2022-09-16 11:58:42,943 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 326 transitions, 1085 flow. Second operand has 6 states, 6 states have (on average 215.16666666666666) internal successors, (1291), 6 states have internal predecessors, (1291), 0 states have call successors, (0), 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 11:58:42,943 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:58:42,943 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 304 [2022-09-16 11:58:42,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand