/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-deagle/arithmetic_prog_ok.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 12:04:47,784 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 12:04:47,785 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 12:04:47,806 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 12:04:47,807 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 12:04:47,808 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 12:04:47,809 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 12:04:47,810 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 12:04:47,810 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 12:04:47,811 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 12:04:47,812 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 12:04:47,812 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 12:04:47,813 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 12:04:47,813 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 12:04:47,814 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 12:04:47,815 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 12:04:47,816 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 12:04:47,819 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 12:04:47,822 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 12:04:47,823 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 12:04:47,824 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 12:04:47,840 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 12:04:47,843 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 12:04:47,843 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 12:04:47,845 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 12:04:47,846 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 12:04:47,846 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 12:04:47,846 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 12:04:47,846 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 12:04:47,847 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 12:04:47,847 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 12:04:47,847 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 12:04:47,848 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 12:04:47,848 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 12:04:47,849 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 12:04:47,849 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 12:04:47,849 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 12:04:47,850 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 12:04:47,850 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 12:04:47,850 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 12:04:47,851 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 12:04:47,856 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 12:04:47,879 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 12:04:47,879 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 12:04:47,880 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 12:04:47,880 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 12:04:47,880 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 12:04:47,880 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 12:04:47,881 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 12:04:47,881 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 12:04:47,881 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 12:04:47,881 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 12:04:47,881 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 12:04:47,881 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 12:04:47,881 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 12:04:47,881 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 12:04:47,881 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 12:04:47,881 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 12:04:47,881 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 12:04:47,881 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 12:04:47,882 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 12:04:47,882 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 12:04:47,882 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 12:04:47,882 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 12:04:47,882 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 12:04:47,882 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 12:04:47,882 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 12:04:47,882 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 12:04:47,882 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 12:04:47,882 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 12:04:47,882 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 12:04:47,883 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 12:04:47,883 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 12:04:47,883 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 12:04:48,063 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 12:04:48,079 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 12:04:48,080 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 12:04:48,081 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 12:04:48,082 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 12:04:48,082 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i [2022-09-16 12:04:48,126 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b78d6db8/4e98998af1124c0bad31e710a499cd27/FLAGcd7adaacc [2022-09-16 12:04:48,467 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 12:04:48,467 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i [2022-09-16 12:04:48,484 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b78d6db8/4e98998af1124c0bad31e710a499cd27/FLAGcd7adaacc [2022-09-16 12:04:48,866 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b78d6db8/4e98998af1124c0bad31e710a499cd27 [2022-09-16 12:04:48,867 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 12:04:48,869 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 12:04:48,871 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 12:04:48,871 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 12:04:48,874 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 12:04:48,874 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 12:04:48" (1/1) ... [2022-09-16 12:04:48,875 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@81497b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:04:48, skipping insertion in model container [2022-09-16 12:04:48,875 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 12:04:48" (1/1) ... [2022-09-16 12:04:48,881 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 12:04:48,917 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 12:04:49,223 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-deagle/arithmetic_prog_ok.i[39757,39770] [2022-09-16 12:04:49,224 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 12:04:49,239 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 12:04:49,276 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-deagle/arithmetic_prog_ok.i[39757,39770] [2022-09-16 12:04:49,276 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 12:04:49,313 INFO L208 MainTranslator]: Completed translation [2022-09-16 12:04:49,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:04:49 WrapperNode [2022-09-16 12:04:49,313 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 12:04:49,315 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 12:04:49,315 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 12:04:49,315 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 12:04:49,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:04:49" (1/1) ... [2022-09-16 12:04:49,346 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:04:49" (1/1) ... [2022-09-16 12:04:49,364 INFO L138 Inliner]: procedures = 243, calls = 50, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 81 [2022-09-16 12:04:49,365 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 12:04:49,365 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 12:04:49,365 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 12:04:49,365 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 12:04:49,371 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:04:49" (1/1) ... [2022-09-16 12:04:49,371 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:04:49" (1/1) ... [2022-09-16 12:04:49,374 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:04:49" (1/1) ... [2022-09-16 12:04:49,374 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:04:49" (1/1) ... [2022-09-16 12:04:49,377 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:04:49" (1/1) ... [2022-09-16 12:04:49,385 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:04:49" (1/1) ... [2022-09-16 12:04:49,387 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:04:49" (1/1) ... [2022-09-16 12:04:49,388 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 12:04:49,389 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 12:04:49,389 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 12:04:49,389 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 12:04:49,390 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:04:49" (1/1) ... [2022-09-16 12:04:49,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 12:04:49,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:04:49,437 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 12:04:49,467 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 12:04:49,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 12:04:49,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 12:04:49,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-09-16 12:04:49,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 12:04:49,481 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-16 12:04:49,482 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-16 12:04:49,482 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-16 12:04:49,482 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-16 12:04:49,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 12:04:49,485 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-09-16 12:04:49,485 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 12:04:49,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 12:04:49,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 12:04:49,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 12:04:49,487 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 12:04:49,590 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 12:04:49,591 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 12:04:49,797 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 12:04:49,803 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 12:04:49,803 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-09-16 12:04:49,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 12:04:49 BoogieIcfgContainer [2022-09-16 12:04:49,805 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 12:04:49,806 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 12:04:49,806 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 12:04:49,819 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 12:04:49,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 12:04:48" (1/3) ... [2022-09-16 12:04:49,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ce0956d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 12:04:49, skipping insertion in model container [2022-09-16 12:04:49,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:04:49" (2/3) ... [2022-09-16 12:04:49,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ce0956d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 12:04:49, skipping insertion in model container [2022-09-16 12:04:49,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 12:04:49" (3/3) ... [2022-09-16 12:04:49,821 INFO L112 eAbstractionObserver]: Analyzing ICFG arithmetic_prog_ok.i [2022-09-16 12:04:49,833 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 12:04:49,833 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-09-16 12:04:49,833 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 12:04:49,911 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-09-16 12:04:49,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 147 places, 150 transitions, 316 flow [2022-09-16 12:04:49,983 INFO L130 PetriNetUnfolder]: 10/148 cut-off events. [2022-09-16 12:04:49,984 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-09-16 12:04:49,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 148 events. 10/148 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 200 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 93. Up to 3 conditions per place. [2022-09-16 12:04:49,988 INFO L82 GeneralOperation]: Start removeDead. Operand has 147 places, 150 transitions, 316 flow [2022-09-16 12:04:49,993 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 131 places, 132 transitions, 273 flow [2022-09-16 12:04:49,999 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 12:04:50,004 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=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;@31f05829, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 12:04:50,005 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-09-16 12:04:50,024 INFO L130 PetriNetUnfolder]: 3/82 cut-off events. [2022-09-16 12:04:50,024 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 12:04:50,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:04:50,025 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] [2022-09-16 12:04:50,026 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-09-16 12:04:50,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:04:50,030 INFO L85 PathProgramCache]: Analyzing trace with hash 746979885, now seen corresponding path program 1 times [2022-09-16 12:04:50,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:04:50,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569103826] [2022-09-16 12:04:50,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:04:50,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:04:50,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:04:50,306 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 12:04:50,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:04:50,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569103826] [2022-09-16 12:04:50,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569103826] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:04:50,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:04:50,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:04:50,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321756991] [2022-09-16 12:04:50,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:04:50,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:04:50,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:04:50,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:04:50,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:04:50,335 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 150 [2022-09-16 12:04:50,337 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 132 transitions, 273 flow. Second operand has 4 states, 4 states have (on average 126.5) internal successors, (506), 4 states have internal predecessors, (506), 0 states have call successors, (0), 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 12:04:50,337 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:04:50,337 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 150 [2022-09-16 12:04:50,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:04:50,524 INFO L130 PetriNetUnfolder]: 105/455 cut-off events. [2022-09-16 12:04:50,525 INFO L131 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2022-09-16 12:04:50,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 689 conditions, 455 events. 105/455 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2224 event pairs, 3 based on Foata normal form. 37/422 useless extension candidates. Maximal degree in co-relation 573. Up to 116 conditions per place. [2022-09-16 12:04:50,530 INFO L137 encePairwiseOnDemand]: 137/150 looper letters, 33 selfloop transitions, 8 changer transitions 0/151 dead transitions. [2022-09-16 12:04:50,530 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 151 transitions, 405 flow [2022-09-16 12:04:50,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:04:50,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 12:04:50,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 683 transitions. [2022-09-16 12:04:50,547 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9106666666666666 [2022-09-16 12:04:50,547 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 683 transitions. [2022-09-16 12:04:50,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 683 transitions. [2022-09-16 12:04:50,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:04:50,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 683 transitions. [2022-09-16 12:04:50,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 136.6) internal successors, (683), 5 states have internal predecessors, (683), 0 states have call successors, (0), 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 12:04:50,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 150.0) internal successors, (900), 6 states have internal predecessors, (900), 0 states have call successors, (0), 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 12:04:50,566 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 150.0) internal successors, (900), 6 states have internal predecessors, (900), 0 states have call successors, (0), 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 12:04:50,567 INFO L175 Difference]: Start difference. First operand has 131 places, 132 transitions, 273 flow. Second operand 5 states and 683 transitions. [2022-09-16 12:04:50,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 151 transitions, 405 flow [2022-09-16 12:04:50,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 151 transitions, 395 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 12:04:50,576 INFO L231 Difference]: Finished difference. Result has 136 places, 135 transitions, 328 flow [2022-09-16 12:04:50,578 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=328, PETRI_PLACES=136, PETRI_TRANSITIONS=135} [2022-09-16 12:04:50,582 INFO L287 CegarLoopForPetriNet]: 131 programPoint places, 5 predicate places. [2022-09-16 12:04:50,582 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 135 transitions, 328 flow [2022-09-16 12:04:50,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 126.5) internal successors, (506), 4 states have internal predecessors, (506), 0 states have call successors, (0), 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 12:04:50,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:04:50,583 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] [2022-09-16 12:04:50,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 12:04:50,584 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-09-16 12:04:50,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:04:50,584 INFO L85 PathProgramCache]: Analyzing trace with hash -62235854, now seen corresponding path program 1 times [2022-09-16 12:04:50,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:04:50,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617085612] [2022-09-16 12:04:50,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:04:50,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:04:50,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:04:50,686 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 12:04:50,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:04:50,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617085612] [2022-09-16 12:04:50,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617085612] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:04:50,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:04:50,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:04:50,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694598869] [2022-09-16 12:04:50,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:04:50,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:04:50,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:04:50,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:04:50,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:04:50,690 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 150 [2022-09-16 12:04:50,691 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 135 transitions, 328 flow. Second operand has 4 states, 4 states have (on average 130.5) internal successors, (522), 4 states have internal predecessors, (522), 0 states have call successors, (0), 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 12:04:50,691 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:04:50,691 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 150 [2022-09-16 12:04:50,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:04:50,784 INFO L130 PetriNetUnfolder]: 56/442 cut-off events. [2022-09-16 12:04:50,784 INFO L131 PetriNetUnfolder]: For 54/59 co-relation queries the response was YES. [2022-09-16 12:04:50,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 688 conditions, 442 events. 56/442 cut-off events. For 54/59 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1911 event pairs, 15 based on Foata normal form. 4/398 useless extension candidates. Maximal degree in co-relation 477. Up to 47 conditions per place. [2022-09-16 12:04:50,794 INFO L137 encePairwiseOnDemand]: 143/150 looper letters, 19 selfloop transitions, 4 changer transitions 0/144 dead transitions. [2022-09-16 12:04:50,795 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 144 transitions, 398 flow [2022-09-16 12:04:50,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:04:50,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 12:04:50,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 671 transitions. [2022-09-16 12:04:50,798 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8946666666666667 [2022-09-16 12:04:50,798 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 671 transitions. [2022-09-16 12:04:50,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 671 transitions. [2022-09-16 12:04:50,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:04:50,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 671 transitions. [2022-09-16 12:04:50,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 134.2) internal successors, (671), 5 states have internal predecessors, (671), 0 states have call successors, (0), 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 12:04:50,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 150.0) internal successors, (900), 6 states have internal predecessors, (900), 0 states have call successors, (0), 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 12:04:50,802 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 150.0) internal successors, (900), 6 states have internal predecessors, (900), 0 states have call successors, (0), 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 12:04:50,802 INFO L175 Difference]: Start difference. First operand has 136 places, 135 transitions, 328 flow. Second operand 5 states and 671 transitions. [2022-09-16 12:04:50,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 144 transitions, 398 flow [2022-09-16 12:04:50,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 144 transitions, 398 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-16 12:04:50,809 INFO L231 Difference]: Finished difference. Result has 143 places, 138 transitions, 360 flow [2022-09-16 12:04:50,809 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=360, PETRI_PLACES=143, PETRI_TRANSITIONS=138} [2022-09-16 12:04:50,810 INFO L287 CegarLoopForPetriNet]: 131 programPoint places, 12 predicate places. [2022-09-16 12:04:50,810 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 138 transitions, 360 flow [2022-09-16 12:04:50,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 130.5) internal successors, (522), 4 states have internal predecessors, (522), 0 states have call successors, (0), 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 12:04:50,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:04:50,811 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] [2022-09-16 12:04:50,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-16 12:04:50,812 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-09-16 12:04:50,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:04:50,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1214509287, now seen corresponding path program 1 times [2022-09-16 12:04:50,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:04:50,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805500627] [2022-09-16 12:04:50,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:04:50,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:04:50,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:04:50,930 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:04:50,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:04:50,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805500627] [2022-09-16 12:04:50,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805500627] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:04:50,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249419218] [2022-09-16 12:04:50,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:04:50,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:04:50,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:04:50,934 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 12:04:50,934 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 12:04:51,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:04:51,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-16 12:04:51,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:04:51,156 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:04:51,156 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 12:04:51,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [249419218] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:04:51,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 12:04:51,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 12:04:51,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546958989] [2022-09-16 12:04:51,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:04:51,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-16 12:04:51,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:04:51,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-16 12:04:51,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-09-16 12:04:51,159 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 150 [2022-09-16 12:04:51,160 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 138 transitions, 360 flow. Second operand has 5 states, 5 states have (on average 127.4) internal successors, (637), 5 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:04:51,160 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:04:51,160 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 150 [2022-09-16 12:04:51,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:04:51,291 INFO L130 PetriNetUnfolder]: 124/618 cut-off events. [2022-09-16 12:04:51,291 INFO L131 PetriNetUnfolder]: For 301/353 co-relation queries the response was YES. [2022-09-16 12:04:51,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1158 conditions, 618 events. 124/618 cut-off events. For 301/353 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2770 event pairs, 20 based on Foata normal form. 25/593 useless extension candidates. Maximal degree in co-relation 975. Up to 88 conditions per place. [2022-09-16 12:04:51,296 INFO L137 encePairwiseOnDemand]: 141/150 looper letters, 35 selfloop transitions, 15 changer transitions 1/164 dead transitions. [2022-09-16 12:04:51,296 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 164 transitions, 556 flow [2022-09-16 12:04:51,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 12:04:51,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 12:04:51,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 928 transitions. [2022-09-16 12:04:51,299 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8838095238095238 [2022-09-16 12:04:51,299 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 928 transitions. [2022-09-16 12:04:51,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 928 transitions. [2022-09-16 12:04:51,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:04:51,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 928 transitions. [2022-09-16 12:04:51,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 132.57142857142858) internal successors, (928), 7 states have internal predecessors, (928), 0 states have call successors, (0), 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 12:04:51,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 150.0) internal successors, (1200), 8 states have internal predecessors, (1200), 0 states have call successors, (0), 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 12:04:51,304 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 150.0) internal successors, (1200), 8 states have internal predecessors, (1200), 0 states have call successors, (0), 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 12:04:51,304 INFO L175 Difference]: Start difference. First operand has 143 places, 138 transitions, 360 flow. Second operand 7 states and 928 transitions. [2022-09-16 12:04:51,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 164 transitions, 556 flow [2022-09-16 12:04:51,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 164 transitions, 554 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 12:04:51,312 INFO L231 Difference]: Finished difference. Result has 151 places, 144 transitions, 433 flow [2022-09-16 12:04:51,312 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=433, PETRI_PLACES=151, PETRI_TRANSITIONS=144} [2022-09-16 12:04:51,314 INFO L287 CegarLoopForPetriNet]: 131 programPoint places, 20 predicate places. [2022-09-16 12:04:51,314 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 144 transitions, 433 flow [2022-09-16 12:04:51,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 127.4) internal successors, (637), 5 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:04:51,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:04:51,315 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] [2022-09-16 12:04:51,337 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 12:04:51,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:04:51,532 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-09-16 12:04:51,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:04:51,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1508361101, now seen corresponding path program 1 times [2022-09-16 12:04:51,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:04:51,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457637413] [2022-09-16 12:04:51,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:04:51,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:04:51,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:04:51,599 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 12:04:51,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:04:51,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457637413] [2022-09-16 12:04:51,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457637413] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:04:51,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:04:51,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:04:51,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045023187] [2022-09-16 12:04:51,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:04:51,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 12:04:51,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:04:51,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 12:04:51,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 12:04:51,601 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 150 [2022-09-16 12:04:51,602 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 144 transitions, 433 flow. Second operand has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 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 12:04:51,602 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:04:51,602 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 150 [2022-09-16 12:04:51,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:04:51,678 INFO L130 PetriNetUnfolder]: 38/379 cut-off events. [2022-09-16 12:04:51,679 INFO L131 PetriNetUnfolder]: For 103/103 co-relation queries the response was YES. [2022-09-16 12:04:51,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 641 conditions, 379 events. 38/379 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1410 event pairs, 4 based on Foata normal form. 23/376 useless extension candidates. Maximal degree in co-relation 481. Up to 43 conditions per place. [2022-09-16 12:04:51,681 INFO L137 encePairwiseOnDemand]: 142/150 looper letters, 15 selfloop transitions, 8 changer transitions 0/139 dead transitions. [2022-09-16 12:04:51,681 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 139 transitions, 433 flow [2022-09-16 12:04:51,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 12:04:51,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 12:04:51,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 393 transitions. [2022-09-16 12:04:51,682 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8733333333333333 [2022-09-16 12:04:51,683 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 393 transitions. [2022-09-16 12:04:51,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 393 transitions. [2022-09-16 12:04:51,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:04:51,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 393 transitions. [2022-09-16 12:04:51,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 0 states have call successors, (0), 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 12:04:51,687 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 0 states have call successors, (0), 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 12:04:51,687 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 0 states have call successors, (0), 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 12:04:51,688 INFO L175 Difference]: Start difference. First operand has 151 places, 144 transitions, 433 flow. Second operand 3 states and 393 transitions. [2022-09-16 12:04:51,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 139 transitions, 433 flow [2022-09-16 12:04:51,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 139 transitions, 416 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-09-16 12:04:51,693 INFO L231 Difference]: Finished difference. Result has 149 places, 137 transitions, 379 flow [2022-09-16 12:04:51,693 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=363, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=379, PETRI_PLACES=149, PETRI_TRANSITIONS=137} [2022-09-16 12:04:51,694 INFO L287 CegarLoopForPetriNet]: 131 programPoint places, 18 predicate places. [2022-09-16 12:04:51,694 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 137 transitions, 379 flow [2022-09-16 12:04:51,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 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 12:04:51,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:04:51,695 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] [2022-09-16 12:04:51,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-16 12:04:51,695 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-09-16 12:04:51,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:04:51,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1023269140, now seen corresponding path program 1 times [2022-09-16 12:04:51,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:04:51,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083941756] [2022-09-16 12:04:51,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:04:51,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:04:51,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:04:51,776 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 12:04:51,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:04:51,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083941756] [2022-09-16 12:04:51,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083941756] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:04:51,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:04:51,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 12:04:51,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104615592] [2022-09-16 12:04:51,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:04:51,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 12:04:51,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:04:51,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 12:04:51,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-09-16 12:04:51,780 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 150 [2022-09-16 12:04:51,781 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 137 transitions, 379 flow. Second operand has 6 states, 6 states have (on average 122.16666666666667) internal successors, (733), 6 states have internal predecessors, (733), 0 states have call successors, (0), 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 12:04:51,781 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:04:51,781 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 150 [2022-09-16 12:04:51,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:04:51,911 INFO L130 PetriNetUnfolder]: 58/476 cut-off events. [2022-09-16 12:04:51,911 INFO L131 PetriNetUnfolder]: For 149/149 co-relation queries the response was YES. [2022-09-16 12:04:51,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 879 conditions, 476 events. 58/476 cut-off events. For 149/149 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1970 event pairs, 11 based on Foata normal form. 0/442 useless extension candidates. Maximal degree in co-relation 623. Up to 49 conditions per place. [2022-09-16 12:04:51,914 INFO L137 encePairwiseOnDemand]: 140/150 looper letters, 39 selfloop transitions, 11 changer transitions 1/159 dead transitions. [2022-09-16 12:04:51,914 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 159 transitions, 563 flow [2022-09-16 12:04:51,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-16 12:04:51,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-16 12:04:51,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1008 transitions. [2022-09-16 12:04:51,917 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.84 [2022-09-16 12:04:51,917 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1008 transitions. [2022-09-16 12:04:51,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1008 transitions. [2022-09-16 12:04:51,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:04:51,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1008 transitions. [2022-09-16 12:04:51,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 126.0) internal successors, (1008), 8 states have internal predecessors, (1008), 0 states have call successors, (0), 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 12:04:51,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 150.0) internal successors, (1350), 9 states have internal predecessors, (1350), 0 states have call successors, (0), 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 12:04:51,922 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 150.0) internal successors, (1350), 9 states have internal predecessors, (1350), 0 states have call successors, (0), 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 12:04:51,922 INFO L175 Difference]: Start difference. First operand has 149 places, 137 transitions, 379 flow. Second operand 8 states and 1008 transitions. [2022-09-16 12:04:51,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 159 transitions, 563 flow [2022-09-16 12:04:51,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 159 transitions, 555 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 12:04:51,926 INFO L231 Difference]: Finished difference. Result has 158 places, 142 transitions, 434 flow [2022-09-16 12:04:51,926 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=371, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=434, PETRI_PLACES=158, PETRI_TRANSITIONS=142} [2022-09-16 12:04:51,928 INFO L287 CegarLoopForPetriNet]: 131 programPoint places, 27 predicate places. [2022-09-16 12:04:51,928 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 142 transitions, 434 flow [2022-09-16 12:04:51,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 122.16666666666667) internal successors, (733), 6 states have internal predecessors, (733), 0 states have call successors, (0), 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 12:04:51,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:04:51,929 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] [2022-09-16 12:04:51,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-16 12:04:51,929 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-09-16 12:04:51,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:04:51,929 INFO L85 PathProgramCache]: Analyzing trace with hash 608767301, now seen corresponding path program 1 times [2022-09-16 12:04:51,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:04:51,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594203835] [2022-09-16 12:04:51,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:04:51,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:04:51,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:04:51,986 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 12:04:51,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:04:51,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594203835] [2022-09-16 12:04:51,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594203835] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:04:51,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:04:51,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 12:04:51,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128185416] [2022-09-16 12:04:51,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:04:51,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 12:04:51,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:04:51,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 12:04:51,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 12:04:51,988 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 150 [2022-09-16 12:04:51,989 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 142 transitions, 434 flow. Second operand has 6 states, 6 states have (on average 122.33333333333333) internal successors, (734), 6 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 12:04:51,989 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:04:51,989 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 150 [2022-09-16 12:04:51,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:04:52,098 INFO L130 PetriNetUnfolder]: 58/478 cut-off events. [2022-09-16 12:04:52,099 INFO L131 PetriNetUnfolder]: For 260/260 co-relation queries the response was YES. [2022-09-16 12:04:52,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 939 conditions, 478 events. 58/478 cut-off events. For 260/260 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1983 event pairs, 9 based on Foata normal form. 5/465 useless extension candidates. Maximal degree in co-relation 679. Up to 79 conditions per place. [2022-09-16 12:04:52,102 INFO L137 encePairwiseOnDemand]: 139/150 looper letters, 38 selfloop transitions, 13 changer transitions 1/160 dead transitions. [2022-09-16 12:04:52,102 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 160 transitions, 604 flow [2022-09-16 12:04:52,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-16 12:04:52,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-16 12:04:52,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1006 transitions. [2022-09-16 12:04:52,105 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8383333333333334 [2022-09-16 12:04:52,105 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1006 transitions. [2022-09-16 12:04:52,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1006 transitions. [2022-09-16 12:04:52,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:04:52,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1006 transitions. [2022-09-16 12:04:52,107 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 125.75) internal successors, (1006), 8 states have internal predecessors, (1006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:04:52,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 150.0) internal successors, (1350), 9 states have internal predecessors, (1350), 0 states have call successors, (0), 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 12:04:52,109 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 150.0) internal successors, (1350), 9 states have internal predecessors, (1350), 0 states have call successors, (0), 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 12:04:52,109 INFO L175 Difference]: Start difference. First operand has 158 places, 142 transitions, 434 flow. Second operand 8 states and 1006 transitions. [2022-09-16 12:04:52,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 160 transitions, 604 flow [2022-09-16 12:04:52,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 160 transitions, 590 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-09-16 12:04:52,113 INFO L231 Difference]: Finished difference. Result has 165 places, 147 transitions, 502 flow [2022-09-16 12:04:52,113 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=502, PETRI_PLACES=165, PETRI_TRANSITIONS=147} [2022-09-16 12:04:52,114 INFO L287 CegarLoopForPetriNet]: 131 programPoint places, 34 predicate places. [2022-09-16 12:04:52,114 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 147 transitions, 502 flow [2022-09-16 12:04:52,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 122.33333333333333) internal successors, (734), 6 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 12:04:52,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:04:52,114 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] [2022-09-16 12:04:52,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-16 12:04:52,115 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-09-16 12:04:52,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:04:52,115 INFO L85 PathProgramCache]: Analyzing trace with hash -579858616, now seen corresponding path program 1 times [2022-09-16 12:04:52,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:04:52,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651371464] [2022-09-16 12:04:52,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:04:52,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:04:52,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:04:52,153 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 12:04:52,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:04:52,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651371464] [2022-09-16 12:04:52,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651371464] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:04:52,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:04:52,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:04:52,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046779072] [2022-09-16 12:04:52,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:04:52,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:04:52,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:04:52,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:04:52,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:04:52,156 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 150 [2022-09-16 12:04:52,156 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 147 transitions, 502 flow. Second operand has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 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 12:04:52,156 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:04:52,156 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 150 [2022-09-16 12:04:52,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:04:52,259 INFO L130 PetriNetUnfolder]: 82/569 cut-off events. [2022-09-16 12:04:52,259 INFO L131 PetriNetUnfolder]: For 348/349 co-relation queries the response was YES. [2022-09-16 12:04:52,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1116 conditions, 569 events. 82/569 cut-off events. For 348/349 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2762 event pairs, 23 based on Foata normal form. 0/537 useless extension candidates. Maximal degree in co-relation 1026. Up to 118 conditions per place. [2022-09-16 12:04:52,264 INFO L137 encePairwiseOnDemand]: 143/150 looper letters, 22 selfloop transitions, 4 changer transitions 0/157 dead transitions. [2022-09-16 12:04:52,264 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 157 transitions, 577 flow [2022-09-16 12:04:52,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:04:52,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 12:04:52,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 664 transitions. [2022-09-16 12:04:52,266 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8853333333333333 [2022-09-16 12:04:52,266 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 664 transitions. [2022-09-16 12:04:52,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 664 transitions. [2022-09-16 12:04:52,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:04:52,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 664 transitions. [2022-09-16 12:04:52,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 132.8) internal successors, (664), 5 states have internal predecessors, (664), 0 states have call successors, (0), 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 12:04:52,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 150.0) internal successors, (900), 6 states have internal predecessors, (900), 0 states have call successors, (0), 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 12:04:52,269 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 150.0) internal successors, (900), 6 states have internal predecessors, (900), 0 states have call successors, (0), 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 12:04:52,269 INFO L175 Difference]: Start difference. First operand has 165 places, 147 transitions, 502 flow. Second operand 5 states and 664 transitions. [2022-09-16 12:04:52,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 157 transitions, 577 flow [2022-09-16 12:04:52,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 157 transitions, 566 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 12:04:52,274 INFO L231 Difference]: Finished difference. Result has 168 places, 150 transitions, 523 flow [2022-09-16 12:04:52,274 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=523, PETRI_PLACES=168, PETRI_TRANSITIONS=150} [2022-09-16 12:04:52,274 INFO L287 CegarLoopForPetriNet]: 131 programPoint places, 37 predicate places. [2022-09-16 12:04:52,275 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 150 transitions, 523 flow [2022-09-16 12:04:52,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 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 12:04:52,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:04:52,275 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:04:52,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-16 12:04:52,275 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-09-16 12:04:52,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:04:52,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1836885039, now seen corresponding path program 1 times [2022-09-16 12:04:52,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:04:52,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628946123] [2022-09-16 12:04:52,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:04:52,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:04:52,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:04:52,313 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-09-16 12:04:52,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:04:52,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628946123] [2022-09-16 12:04:52,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628946123] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:04:52,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:04:52,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:04:52,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856944216] [2022-09-16 12:04:52,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:04:52,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:04:52,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:04:52,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:04:52,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:04:52,315 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 150 [2022-09-16 12:04:52,316 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 150 transitions, 523 flow. Second operand has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 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 12:04:52,316 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:04:52,316 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 150 [2022-09-16 12:04:52,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:04:52,399 INFO L130 PetriNetUnfolder]: 60/548 cut-off events. [2022-09-16 12:04:52,399 INFO L131 PetriNetUnfolder]: For 486/486 co-relation queries the response was YES. [2022-09-16 12:04:52,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1142 conditions, 548 events. 60/548 cut-off events. For 486/486 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2374 event pairs, 13 based on Foata normal form. 2/547 useless extension candidates. Maximal degree in co-relation 885. Up to 83 conditions per place. [2022-09-16 12:04:52,404 INFO L137 encePairwiseOnDemand]: 143/150 looper letters, 21 selfloop transitions, 11 changer transitions 1/154 dead transitions. [2022-09-16 12:04:52,404 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 154 transitions, 603 flow [2022-09-16 12:04:52,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:04:52,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 12:04:52,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 649 transitions. [2022-09-16 12:04:52,406 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8653333333333333 [2022-09-16 12:04:52,406 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 649 transitions. [2022-09-16 12:04:52,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 649 transitions. [2022-09-16 12:04:52,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:04:52,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 649 transitions. [2022-09-16 12:04:52,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 129.8) internal successors, (649), 5 states have internal predecessors, (649), 0 states have call successors, (0), 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 12:04:52,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 150.0) internal successors, (900), 6 states have internal predecessors, (900), 0 states have call successors, (0), 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 12:04:52,409 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 150.0) internal successors, (900), 6 states have internal predecessors, (900), 0 states have call successors, (0), 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 12:04:52,409 INFO L175 Difference]: Start difference. First operand has 168 places, 150 transitions, 523 flow. Second operand 5 states and 649 transitions. [2022-09-16 12:04:52,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 154 transitions, 603 flow [2022-09-16 12:04:52,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 154 transitions, 596 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 12:04:52,414 INFO L231 Difference]: Finished difference. Result has 169 places, 150 transitions, 546 flow [2022-09-16 12:04:52,414 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=509, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=546, PETRI_PLACES=169, PETRI_TRANSITIONS=150} [2022-09-16 12:04:52,415 INFO L287 CegarLoopForPetriNet]: 131 programPoint places, 38 predicate places. [2022-09-16 12:04:52,415 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 150 transitions, 546 flow [2022-09-16 12:04:52,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 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 12:04:52,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:04:52,416 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:04:52,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-16 12:04:52,416 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-09-16 12:04:52,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:04:52,416 INFO L85 PathProgramCache]: Analyzing trace with hash 2036531361, now seen corresponding path program 1 times [2022-09-16 12:04:52,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:04:52,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978203600] [2022-09-16 12:04:52,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:04:52,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:04:52,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:04:52,486 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 12:04:52,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:04:52,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978203600] [2022-09-16 12:04:52,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978203600] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:04:52,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016229869] [2022-09-16 12:04:52,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:04:52,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:04:52,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:04:52,504 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 12:04:52,531 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 12:04:52,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:04:52,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 7 conjunts are in the unsatisfiable core [2022-09-16 12:04:52,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:04:52,659 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-09-16 12:04:52,660 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 12:04:52,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016229869] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:04:52,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 12:04:52,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 7 [2022-09-16 12:04:52,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573679904] [2022-09-16 12:04:52,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:04:52,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 12:04:52,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:04:52,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 12:04:52,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-09-16 12:04:52,664 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 150 [2022-09-16 12:04:52,665 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 150 transitions, 546 flow. Second operand has 6 states, 6 states have (on average 122.83333333333333) internal successors, (737), 6 states have internal predecessors, (737), 0 states have call successors, (0), 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 12:04:52,665 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:04:52,665 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 150 [2022-09-16 12:04:52,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:04:52,821 INFO L130 PetriNetUnfolder]: 76/589 cut-off events. [2022-09-16 12:04:52,821 INFO L131 PetriNetUnfolder]: For 556/556 co-relation queries the response was YES. [2022-09-16 12:04:52,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1273 conditions, 589 events. 76/589 cut-off events. For 556/556 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2830 event pairs, 5 based on Foata normal form. 13/598 useless extension candidates. Maximal degree in co-relation 1006. Up to 62 conditions per place. [2022-09-16 12:04:52,826 INFO L137 encePairwiseOnDemand]: 137/150 looper letters, 25 selfloop transitions, 19 changer transitions 0/155 dead transitions. [2022-09-16 12:04:52,826 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 155 transitions, 652 flow [2022-09-16 12:04:52,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-16 12:04:52,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-16 12:04:52,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 992 transitions. [2022-09-16 12:04:52,829 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8266666666666667 [2022-09-16 12:04:52,829 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 992 transitions. [2022-09-16 12:04:52,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 992 transitions. [2022-09-16 12:04:52,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:04:52,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 992 transitions. [2022-09-16 12:04:52,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 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 12:04:52,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 150.0) internal successors, (1350), 9 states have internal predecessors, (1350), 0 states have call successors, (0), 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 12:04:52,835 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 150.0) internal successors, (1350), 9 states have internal predecessors, (1350), 0 states have call successors, (0), 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 12:04:52,835 INFO L175 Difference]: Start difference. First operand has 169 places, 150 transitions, 546 flow. Second operand 8 states and 992 transitions. [2022-09-16 12:04:52,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 155 transitions, 652 flow [2022-09-16 12:04:52,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 155 transitions, 630 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-09-16 12:04:52,839 INFO L231 Difference]: Finished difference. Result has 170 places, 149 transitions, 584 flow [2022-09-16 12:04:52,839 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=584, PETRI_PLACES=170, PETRI_TRANSITIONS=149} [2022-09-16 12:04:52,839 INFO L287 CegarLoopForPetriNet]: 131 programPoint places, 39 predicate places. [2022-09-16 12:04:52,840 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 149 transitions, 584 flow [2022-09-16 12:04:52,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 122.83333333333333) internal successors, (737), 6 states have internal predecessors, (737), 0 states have call successors, (0), 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 12:04:52,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:04:52,840 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:04:52,873 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-09-16 12:04:53,059 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,SelfDestructingSolverStorable8 [2022-09-16 12:04:53,059 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-09-16 12:04:53,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:04:53,059 INFO L85 PathProgramCache]: Analyzing trace with hash -2013098904, now seen corresponding path program 1 times [2022-09-16 12:04:53,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:04:53,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932860285] [2022-09-16 12:04:53,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:04:53,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:04:53,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:04:53,111 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 12:04:53,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:04:53,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932860285] [2022-09-16 12:04:53,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932860285] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:04:53,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:04:53,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:04:53,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303099741] [2022-09-16 12:04:53,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:04:53,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:04:53,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:04:53,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:04:53,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:04:53,113 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 150 [2022-09-16 12:04:53,114 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 149 transitions, 584 flow. Second operand has 4 states, 4 states have (on average 132.25) internal successors, (529), 4 states have internal predecessors, (529), 0 states have call successors, (0), 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 12:04:53,114 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:04:53,114 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 150 [2022-09-16 12:04:53,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:04:53,178 INFO L130 PetriNetUnfolder]: 42/481 cut-off events. [2022-09-16 12:04:53,178 INFO L131 PetriNetUnfolder]: For 425/425 co-relation queries the response was YES. [2022-09-16 12:04:53,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1017 conditions, 481 events. 42/481 cut-off events. For 425/425 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1732 event pairs, 3 based on Foata normal form. 3/482 useless extension candidates. Maximal degree in co-relation 821. Up to 31 conditions per place. [2022-09-16 12:04:53,181 INFO L137 encePairwiseOnDemand]: 144/150 looper letters, 12 selfloop transitions, 8 changer transitions 0/152 dead transitions. [2022-09-16 12:04:53,181 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 152 transitions, 634 flow [2022-09-16 12:04:53,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:04:53,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 12:04:53,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 663 transitions. [2022-09-16 12:04:53,183 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.884 [2022-09-16 12:04:53,183 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 663 transitions. [2022-09-16 12:04:53,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 663 transitions. [2022-09-16 12:04:53,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:04:53,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 663 transitions. [2022-09-16 12:04:53,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 132.6) internal successors, (663), 5 states have internal predecessors, (663), 0 states have call successors, (0), 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 12:04:53,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 150.0) internal successors, (900), 6 states have internal predecessors, (900), 0 states have call successors, (0), 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 12:04:53,186 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 150.0) internal successors, (900), 6 states have internal predecessors, (900), 0 states have call successors, (0), 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 12:04:53,186 INFO L175 Difference]: Start difference. First operand has 170 places, 149 transitions, 584 flow. Second operand 5 states and 663 transitions. [2022-09-16 12:04:53,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 152 transitions, 634 flow [2022-09-16 12:04:53,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 152 transitions, 605 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-09-16 12:04:53,192 INFO L231 Difference]: Finished difference. Result has 168 places, 149 transitions, 575 flow [2022-09-16 12:04:53,193 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=551, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=575, PETRI_PLACES=168, PETRI_TRANSITIONS=149} [2022-09-16 12:04:53,193 INFO L287 CegarLoopForPetriNet]: 131 programPoint places, 37 predicate places. [2022-09-16 12:04:53,193 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 149 transitions, 575 flow [2022-09-16 12:04:53,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 132.25) internal successors, (529), 4 states have internal predecessors, (529), 0 states have call successors, (0), 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 12:04:53,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:04:53,194 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:04:53,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-09-16 12:04:53,194 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-09-16 12:04:53,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:04:53,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1492175045, now seen corresponding path program 1 times [2022-09-16 12:04:53,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:04:53,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168874717] [2022-09-16 12:04:53,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:04:53,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:04:53,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:04:53,264 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 12:04:53,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:04:53,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168874717] [2022-09-16 12:04:53,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168874717] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:04:53,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220949335] [2022-09-16 12:04:53,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:04:53,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:04:53,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:04:53,279 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 12:04:53,280 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 12:04:53,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:04:53,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-16 12:04:53,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:04:53,445 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:04:53,445 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 12:04:53,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220949335] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:04:53,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 12:04:53,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-09-16 12:04:53,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746694407] [2022-09-16 12:04:53,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:04:53,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-16 12:04:53,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:04:53,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-16 12:04:53,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-09-16 12:04:53,447 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 150 [2022-09-16 12:04:53,448 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 149 transitions, 575 flow. Second operand has 5 states, 5 states have (on average 131.8) internal successors, (659), 5 states have internal predecessors, (659), 0 states have call successors, (0), 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 12:04:53,448 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:04:53,448 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 150 [2022-09-16 12:04:53,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:04:53,507 INFO L130 PetriNetUnfolder]: 42/478 cut-off events. [2022-09-16 12:04:53,507 INFO L131 PetriNetUnfolder]: For 390/390 co-relation queries the response was YES. [2022-09-16 12:04:53,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 998 conditions, 478 events. 42/478 cut-off events. For 390/390 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1703 event pairs, 1 based on Foata normal form. 3/479 useless extension candidates. Maximal degree in co-relation 797. Up to 32 conditions per place. [2022-09-16 12:04:53,511 INFO L137 encePairwiseOnDemand]: 146/150 looper letters, 13 selfloop transitions, 5 changer transitions 0/150 dead transitions. [2022-09-16 12:04:53,511 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 150 transitions, 615 flow [2022-09-16 12:04:53,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 12:04:53,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 12:04:53,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 531 transitions. [2022-09-16 12:04:53,513 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.885 [2022-09-16 12:04:53,513 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 531 transitions. [2022-09-16 12:04:53,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 531 transitions. [2022-09-16 12:04:53,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:04:53,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 531 transitions. [2022-09-16 12:04:53,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 132.75) internal successors, (531), 4 states have internal predecessors, (531), 0 states have call successors, (0), 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 12:04:53,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 150.0) internal successors, (750), 5 states have internal predecessors, (750), 0 states have call successors, (0), 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 12:04:53,516 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 150.0) internal successors, (750), 5 states have internal predecessors, (750), 0 states have call successors, (0), 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 12:04:53,516 INFO L175 Difference]: Start difference. First operand has 168 places, 149 transitions, 575 flow. Second operand 4 states and 531 transitions. [2022-09-16 12:04:53,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 150 transitions, 615 flow [2022-09-16 12:04:53,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 150 transitions, 603 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 12:04:53,521 INFO L231 Difference]: Finished difference. Result has 167 places, 148 transitions, 569 flow [2022-09-16 12:04:53,521 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=559, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=569, PETRI_PLACES=167, PETRI_TRANSITIONS=148} [2022-09-16 12:04:53,522 INFO L287 CegarLoopForPetriNet]: 131 programPoint places, 36 predicate places. [2022-09-16 12:04:53,522 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 148 transitions, 569 flow [2022-09-16 12:04:53,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 131.8) internal successors, (659), 5 states have internal predecessors, (659), 0 states have call successors, (0), 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 12:04:53,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:04:53,523 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:04:53,547 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 12:04:53,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:04:53,736 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-09-16 12:04:53,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:04:53,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1854174143, now seen corresponding path program 1 times [2022-09-16 12:04:53,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:04:53,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141498216] [2022-09-16 12:04:53,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:04:53,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:04:53,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:04:53,768 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 12:04:53,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:04:53,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141498216] [2022-09-16 12:04:53,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141498216] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:04:53,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:04:53,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:04:53,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481726249] [2022-09-16 12:04:53,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:04:53,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:04:53,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:04:53,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:04:53,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:04:53,769 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 150 [2022-09-16 12:04:53,770 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 148 transitions, 569 flow. Second operand has 4 states, 4 states have (on average 130.75) internal successors, (523), 4 states have internal predecessors, (523), 0 states have call successors, (0), 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 12:04:53,770 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:04:53,770 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 150 [2022-09-16 12:04:53,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:04:53,862 INFO L130 PetriNetUnfolder]: 89/585 cut-off events. [2022-09-16 12:04:53,862 INFO L131 PetriNetUnfolder]: For 489/490 co-relation queries the response was YES. [2022-09-16 12:04:53,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1248 conditions, 585 events. 89/585 cut-off events. For 489/490 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2964 event pairs, 10 based on Foata normal form. 8/582 useless extension candidates. Maximal degree in co-relation 1152. Up to 66 conditions per place. [2022-09-16 12:04:53,867 INFO L137 encePairwiseOnDemand]: 144/150 looper letters, 14 selfloop transitions, 8 changer transitions 0/151 dead transitions. [2022-09-16 12:04:53,867 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 151 transitions, 620 flow [2022-09-16 12:04:53,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:04:53,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 12:04:53,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 655 transitions. [2022-09-16 12:04:53,868 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8733333333333333 [2022-09-16 12:04:53,868 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 655 transitions. [2022-09-16 12:04:53,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 655 transitions. [2022-09-16 12:04:53,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:04:53,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 655 transitions. [2022-09-16 12:04:53,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 131.0) internal successors, (655), 5 states have internal predecessors, (655), 0 states have call successors, (0), 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 12:04:53,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 150.0) internal successors, (900), 6 states have internal predecessors, (900), 0 states have call successors, (0), 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 12:04:53,871 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 150.0) internal successors, (900), 6 states have internal predecessors, (900), 0 states have call successors, (0), 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 12:04:53,871 INFO L175 Difference]: Start difference. First operand has 167 places, 148 transitions, 569 flow. Second operand 5 states and 655 transitions. [2022-09-16 12:04:53,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 151 transitions, 620 flow [2022-09-16 12:04:53,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 151 transitions, 610 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 12:04:53,875 INFO L231 Difference]: Finished difference. Result has 168 places, 148 transitions, 579 flow [2022-09-16 12:04:53,876 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=555, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=579, PETRI_PLACES=168, PETRI_TRANSITIONS=148} [2022-09-16 12:04:53,876 INFO L287 CegarLoopForPetriNet]: 131 programPoint places, 37 predicate places. [2022-09-16 12:04:53,876 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 148 transitions, 579 flow [2022-09-16 12:04:53,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 130.75) internal successors, (523), 4 states have internal predecessors, (523), 0 states have call successors, (0), 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 12:04:53,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:04:53,876 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:04:53,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-09-16 12:04:53,877 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-09-16 12:04:53,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:04:53,877 INFO L85 PathProgramCache]: Analyzing trace with hash -334651520, now seen corresponding path program 1 times [2022-09-16 12:04:53,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:04:53,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637383957] [2022-09-16 12:04:53,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:04:53,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:04:53,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:04:53,923 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:04:53,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:04:53,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637383957] [2022-09-16 12:04:53,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637383957] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:04:53,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406288932] [2022-09-16 12:04:53,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:04:53,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:04:53,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:04:53,932 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 12:04:53,933 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 12:04:54,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:04:54,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 12:04:54,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:04:54,079 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:04:54,080 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 12:04:54,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406288932] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:04:54,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 12:04:54,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 12:04:54,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89126905] [2022-09-16 12:04:54,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:04:54,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 12:04:54,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:04:54,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 12:04:54,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 12:04:54,081 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 150 [2022-09-16 12:04:54,082 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 148 transitions, 579 flow. Second operand has 6 states, 6 states have (on average 129.66666666666666) internal successors, (778), 6 states have internal predecessors, (778), 0 states have call successors, (0), 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 12:04:54,082 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:04:54,082 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 150 [2022-09-16 12:04:54,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:04:54,185 INFO L130 PetriNetUnfolder]: 85/571 cut-off events. [2022-09-16 12:04:54,185 INFO L131 PetriNetUnfolder]: For 521/522 co-relation queries the response was YES. [2022-09-16 12:04:54,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1261 conditions, 571 events. 85/571 cut-off events. For 521/522 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2852 event pairs, 2 based on Foata normal form. 8/568 useless extension candidates. Maximal degree in co-relation 1165. Up to 69 conditions per place. [2022-09-16 12:04:54,189 INFO L137 encePairwiseOnDemand]: 145/150 looper letters, 19 selfloop transitions, 6 changer transitions 1/155 dead transitions. [2022-09-16 12:04:54,189 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 155 transitions, 648 flow [2022-09-16 12:04:54,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 12:04:54,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 12:04:54,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 916 transitions. [2022-09-16 12:04:54,191 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8723809523809524 [2022-09-16 12:04:54,191 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 916 transitions. [2022-09-16 12:04:54,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 916 transitions. [2022-09-16 12:04:54,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:04:54,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 916 transitions. [2022-09-16 12:04:54,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 130.85714285714286) internal successors, (916), 7 states have internal predecessors, (916), 0 states have call successors, (0), 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 12:04:54,194 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 150.0) internal successors, (1200), 8 states have internal predecessors, (1200), 0 states have call successors, (0), 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 12:04:54,194 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 150.0) internal successors, (1200), 8 states have internal predecessors, (1200), 0 states have call successors, (0), 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 12:04:54,195 INFO L175 Difference]: Start difference. First operand has 168 places, 148 transitions, 579 flow. Second operand 7 states and 916 transitions. [2022-09-16 12:04:54,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 155 transitions, 648 flow [2022-09-16 12:04:54,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 155 transitions, 636 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 12:04:54,199 INFO L231 Difference]: Finished difference. Result has 170 places, 147 transitions, 575 flow [2022-09-16 12:04:54,199 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=563, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=575, PETRI_PLACES=170, PETRI_TRANSITIONS=147} [2022-09-16 12:04:54,200 INFO L287 CegarLoopForPetriNet]: 131 programPoint places, 39 predicate places. [2022-09-16 12:04:54,200 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 147 transitions, 575 flow [2022-09-16 12:04:54,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 129.66666666666666) internal successors, (778), 6 states have internal predecessors, (778), 0 states have call successors, (0), 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 12:04:54,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:04:54,200 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:04:54,220 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 12:04:54,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:04:54,418 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-09-16 12:04:54,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:04:54,418 INFO L85 PathProgramCache]: Analyzing trace with hash -545981867, now seen corresponding path program 1 times [2022-09-16 12:04:54,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:04:54,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977704069] [2022-09-16 12:04:54,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:04:54,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:04:54,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:04:54,459 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-09-16 12:04:54,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:04:54,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977704069] [2022-09-16 12:04:54,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977704069] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:04:54,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:04:54,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 12:04:54,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562424131] [2022-09-16 12:04:54,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:04:54,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 12:04:54,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:04:54,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 12:04:54,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-09-16 12:04:54,461 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 150 [2022-09-16 12:04:54,462 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 147 transitions, 575 flow. Second operand has 6 states, 6 states have (on average 124.16666666666667) internal successors, (745), 6 states have internal predecessors, (745), 0 states have call successors, (0), 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 12:04:54,462 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:04:54,462 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 150 [2022-09-16 12:04:54,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:04:54,587 INFO L130 PetriNetUnfolder]: 74/564 cut-off events. [2022-09-16 12:04:54,587 INFO L131 PetriNetUnfolder]: For 693/693 co-relation queries the response was YES. [2022-09-16 12:04:54,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1291 conditions, 564 events. 74/564 cut-off events. For 693/693 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2684 event pairs, 4 based on Foata normal form. 9/569 useless extension candidates. Maximal degree in co-relation 1019. Up to 54 conditions per place. [2022-09-16 12:04:54,589 INFO L137 encePairwiseOnDemand]: 141/150 looper letters, 0 selfloop transitions, 0 changer transitions 154/154 dead transitions. [2022-09-16 12:04:54,589 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 154 transitions, 674 flow [2022-09-16 12:04:54,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-16 12:04:54,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-16 12:04:54,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 993 transitions. [2022-09-16 12:04:54,591 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8275 [2022-09-16 12:04:54,591 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 993 transitions. [2022-09-16 12:04:54,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 993 transitions. [2022-09-16 12:04:54,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:04:54,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 993 transitions. [2022-09-16 12:04:54,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 124.125) internal successors, (993), 8 states have internal predecessors, (993), 0 states have call successors, (0), 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 12:04:54,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 150.0) internal successors, (1350), 9 states have internal predecessors, (1350), 0 states have call successors, (0), 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 12:04:54,595 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 150.0) internal successors, (1350), 9 states have internal predecessors, (1350), 0 states have call successors, (0), 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 12:04:54,595 INFO L175 Difference]: Start difference. First operand has 170 places, 147 transitions, 575 flow. Second operand 8 states and 993 transitions. [2022-09-16 12:04:54,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 154 transitions, 674 flow [2022-09-16 12:04:54,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 154 transitions, 657 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-09-16 12:04:54,598 INFO L231 Difference]: Finished difference. Result has 170 places, 0 transitions, 0 flow [2022-09-16 12:04:54,599 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=531, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=170, PETRI_TRANSITIONS=0} [2022-09-16 12:04:54,599 INFO L287 CegarLoopForPetriNet]: 131 programPoint places, 39 predicate places. [2022-09-16 12:04:54,599 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 0 transitions, 0 flow [2022-09-16 12:04:54,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 124.16666666666667) internal successors, (745), 6 states have internal predecessors, (745), 0 states have call successors, (0), 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 12:04:54,601 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 18 remaining) [2022-09-16 12:04:54,602 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2022-09-16 12:04:54,602 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2022-09-16 12:04:54,602 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2022-09-16 12:04:54,602 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2022-09-16 12:04:54,602 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2022-09-16 12:04:54,602 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2022-09-16 12:04:54,602 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2022-09-16 12:04:54,602 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 18 remaining) [2022-09-16 12:04:54,602 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2022-09-16 12:04:54,602 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2022-09-16 12:04:54,602 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2022-09-16 12:04:54,602 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2022-09-16 12:04:54,602 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2022-09-16 12:04:54,602 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2022-09-16 12:04:54,602 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2022-09-16 12:04:54,602 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2022-09-16 12:04:54,603 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2022-09-16 12:04:54,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-09-16 12:04:54,603 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:04:54,606 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-09-16 12:04:54,606 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-09-16 12:04:54,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 12:04:54 BasicIcfg [2022-09-16 12:04:54,611 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-09-16 12:04:54,612 INFO L158 Benchmark]: Toolchain (without parser) took 5742.77ms. Allocated memory was 194.0MB in the beginning and 281.0MB in the end (delta: 87.0MB). Free memory was 171.3MB in the beginning and 239.6MB in the end (delta: -68.3MB). Peak memory consumption was 169.1MB. Max. memory is 8.0GB. [2022-09-16 12:04:54,612 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 194.0MB. Free memory is still 153.8MB. There was no memory consumed. Max. memory is 8.0GB. [2022-09-16 12:04:54,612 INFO L158 Benchmark]: CACSL2BoogieTranslator took 443.02ms. Allocated memory was 194.0MB in the beginning and 232.8MB in the end (delta: 38.8MB). Free memory was 171.3MB in the beginning and 191.6MB in the end (delta: -20.3MB). Peak memory consumption was 22.1MB. Max. memory is 8.0GB. [2022-09-16 12:04:54,612 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.13ms. Allocated memory is still 232.8MB. Free memory was 191.6MB in the beginning and 189.0MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-09-16 12:04:54,613 INFO L158 Benchmark]: Boogie Preprocessor took 23.25ms. Allocated memory is still 232.8MB. Free memory was 189.0MB in the beginning and 187.4MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-09-16 12:04:54,613 INFO L158 Benchmark]: RCFGBuilder took 416.00ms. Allocated memory is still 232.8MB. Free memory was 187.4MB in the beginning and 170.6MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2022-09-16 12:04:54,613 INFO L158 Benchmark]: TraceAbstraction took 4805.18ms. Allocated memory was 232.8MB in the beginning and 281.0MB in the end (delta: 48.2MB). Free memory was 170.1MB in the beginning and 239.6MB in the end (delta: -69.5MB). Peak memory consumption was 130.2MB. Max. memory is 8.0GB. [2022-09-16 12:04:54,614 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 194.0MB. Free memory is still 153.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 443.02ms. Allocated memory was 194.0MB in the beginning and 232.8MB in the end (delta: 38.8MB). Free memory was 171.3MB in the beginning and 191.6MB in the end (delta: -20.3MB). Peak memory consumption was 22.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 50.13ms. Allocated memory is still 232.8MB. Free memory was 191.6MB in the beginning and 189.0MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 23.25ms. Allocated memory is still 232.8MB. Free memory was 189.0MB in the beginning and 187.4MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 416.00ms. Allocated memory is still 232.8MB. Free memory was 187.4MB in the beginning and 170.6MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * TraceAbstraction took 4805.18ms. Allocated memory was 232.8MB in the beginning and 281.0MB in the end (delta: 48.2MB). Free memory was 170.1MB in the beginning and 239.6MB in the end (delta: -69.5MB). Peak memory consumption was 130.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 882]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 882]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 885]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 885]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 897]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 897]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 900]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 900]: 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, 202 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: 4.7s, OverallIterations: 14, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 236 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 236 mSDsluCounter, 214 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 228 mSDsCounter, 76 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 635 IncrementalHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 76 mSolverCounterUnsat, 94 mSDtfsCounter, 635 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 478 GetRequests, 403 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=584occurred in iteration=9, InterpolantAutomatonStates: 83, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 1684 NumberOfCodeBlocks, 1684 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 1666 ConstructedInterpolants, 0 QuantifiedInterpolants, 2700 SizeOfPredicates, 12 NumberOfNonLiveVariables, 1060 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 18 InterpolantComputations, 14 PerfectInterpolantSequences, 90/128 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 12:04:54,639 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...