/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.error.function.in.sv-comp.mode false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/weaver/parallel-misc-4.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:50:09,840 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:50:09,842 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:50:09,884 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 11:50:09,885 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 11:50:09,888 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 11:50:09,891 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 11:50:09,893 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 11:50:09,895 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 11:50:09,899 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 11:50:09,900 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 11:50:09,901 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 11:50:09,901 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:50:09,903 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:50:09,904 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:50:09,907 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:50:09,907 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:50:09,908 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:50:09,910 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:50:09,919 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:50:09,920 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:50:09,921 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:50:09,923 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:50:09,924 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:50:09,930 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 11:50:09,931 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 11:50:09,931 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 11:50:09,932 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 11:50:09,933 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 11:50:09,933 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 11:50:09,934 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 11:50:09,934 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 11:50:09,936 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 11:50:09,936 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 11:50:09,937 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 11:50:09,937 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 11:50:09,938 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 11:50:09,938 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 11:50:09,938 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:50:09,939 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:50:09,939 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:50:09,940 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-09-16 11:50:09,970 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:50:09,971 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:50:09,972 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:50:09,972 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:50:09,972 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:50:09,972 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:50:09,973 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:50:09,973 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:50:09,973 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:50:09,973 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:50:09,974 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:50:09,974 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:50:09,974 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:50:09,974 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:50:09,974 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:50:09,975 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:50:09,975 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:50:09,975 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:50:09,975 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:50:09,975 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:50:09,975 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:50:09,976 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:50:09,976 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:50:09,976 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:50:09,976 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:50:09,976 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:50:09,977 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:50:09,977 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:50:09,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:50:09,978 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:50:09,978 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 11:50:09,978 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:50:10,232 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:50:10,257 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:50:10,259 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:50:10,260 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:50:10,260 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:50:10,261 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-4.wvr.c [2022-09-16 11:50:10,318 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5687a315/667de137482c448ab94f8941c9e3a6f6/FLAG75c51e386 [2022-09-16 11:50:10,702 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:50:10,702 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-4.wvr.c [2022-09-16 11:50:10,709 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5687a315/667de137482c448ab94f8941c9e3a6f6/FLAG75c51e386 [2022-09-16 11:50:11,108 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5687a315/667de137482c448ab94f8941c9e3a6f6 [2022-09-16 11:50:11,111 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:50:11,112 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:50:11,115 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:50:11,115 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:50:11,118 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:50:11,118 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:50:11" (1/1) ... [2022-09-16 11:50:11,119 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43c522ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:50:11, skipping insertion in model container [2022-09-16 11:50:11,119 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:50:11" (1/1) ... [2022-09-16 11:50:11,125 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:50:11,144 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:50:11,306 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-4.wvr.c[2950,2963] [2022-09-16 11:50:11,307 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:50:11,313 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:50:11,336 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-4.wvr.c[2950,2963] [2022-09-16 11:50:11,337 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:50:11,346 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:50:11,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:50:11 WrapperNode [2022-09-16 11:50:11,347 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:50:11,348 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:50:11,348 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:50:11,348 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:50:11,353 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:50:11" (1/1) ... [2022-09-16 11:50:11,360 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:50:11" (1/1) ... [2022-09-16 11:50:11,382 INFO L138 Inliner]: procedures = 22, calls = 43, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2022-09-16 11:50:11,383 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:50:11,384 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:50:11,384 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:50:11,384 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:50:11,393 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:50:11" (1/1) ... [2022-09-16 11:50:11,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:50:11" (1/1) ... [2022-09-16 11:50:11,405 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:50:11" (1/1) ... [2022-09-16 11:50:11,405 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:50:11" (1/1) ... [2022-09-16 11:50:11,409 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:50:11" (1/1) ... [2022-09-16 11:50:11,413 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:50:11" (1/1) ... [2022-09-16 11:50:11,414 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:50:11" (1/1) ... [2022-09-16 11:50:11,428 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:50:11,428 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:50:11,429 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:50:11,429 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:50:11,430 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:50:11" (1/1) ... [2022-09-16 11:50:11,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:50:11,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:50:11,454 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-09-16 11:50:11,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-09-16 11:50:11,484 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:50:11,484 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-16 11:50:11,484 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-16 11:50:11,484 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-16 11:50:11,484 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-16 11:50:11,484 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-16 11:50:11,484 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-16 11:50:11,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:50:11,485 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:50:11,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:50:11,485 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-16 11:50:11,485 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-16 11:50:11,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:50:11,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:50:11,485 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 11:50:11,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:50:11,487 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 11:50:11,566 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:50:11,568 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:50:11,840 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:50:11,919 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:50:11,919 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-09-16 11:50:11,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:50:11 BoogieIcfgContainer [2022-09-16 11:50:11,922 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:50:11,931 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:50:11,931 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:50:11,934 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:50:11,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:50:11" (1/3) ... [2022-09-16 11:50:11,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49223e98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:50:11, skipping insertion in model container [2022-09-16 11:50:11,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:50:11" (2/3) ... [2022-09-16 11:50:11,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49223e98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:50:11, skipping insertion in model container [2022-09-16 11:50:11,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:50:11" (3/3) ... [2022-09-16 11:50:11,936 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-4.wvr.c [2022-09-16 11:50:11,951 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:50:11,952 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-09-16 11:50:11,952 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:50:12,065 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-09-16 11:50:12,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 112 transitions, 248 flow [2022-09-16 11:50:12,165 INFO L130 PetriNetUnfolder]: 7/109 cut-off events. [2022-09-16 11:50:12,165 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-09-16 11:50:12,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 109 events. 7/109 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 117 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 87. Up to 2 conditions per place. [2022-09-16 11:50:12,173 INFO L82 GeneralOperation]: Start removeDead. Operand has 115 places, 112 transitions, 248 flow [2022-09-16 11:50:12,178 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 93 transitions, 198 flow [2022-09-16 11:50:12,194 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:50:12,202 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;@597ba425, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:50:12,202 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-09-16 11:50:12,229 INFO L130 PetriNetUnfolder]: 3/51 cut-off events. [2022-09-16 11:50:12,229 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:50:12,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:50:12,230 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] [2022-09-16 11:50:12,231 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-09-16 11:50:12,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:50:12,235 INFO L85 PathProgramCache]: Analyzing trace with hash 634735597, now seen corresponding path program 1 times [2022-09-16 11:50:12,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:50:12,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331978623] [2022-09-16 11:50:12,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:12,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:50:12,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:12,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:50:12,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:50:12,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331978623] [2022-09-16 11:50:12,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331978623] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:50:12,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:50:12,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-09-16 11:50:12,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754121242] [2022-09-16 11:50:12,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:50:12,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-16 11:50:12,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:50:12,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-16 11:50:12,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-09-16 11:50:12,622 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 112 [2022-09-16 11:50:12,630 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 93 transitions, 198 flow. Second operand has 5 states, 5 states have (on average 83.6) internal successors, (418), 5 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:12,630 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:50:12,630 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 112 [2022-09-16 11:50:12,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:50:12,934 INFO L130 PetriNetUnfolder]: 526/1115 cut-off events. [2022-09-16 11:50:12,934 INFO L131 PetriNetUnfolder]: For 161/161 co-relation queries the response was YES. [2022-09-16 11:50:12,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1983 conditions, 1115 events. 526/1115 cut-off events. For 161/161 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 6506 event pairs, 102 based on Foata normal form. 103/768 useless extension candidates. Maximal degree in co-relation 1866. Up to 368 conditions per place. [2022-09-16 11:50:12,953 INFO L137 encePairwiseOnDemand]: 94/112 looper letters, 24 selfloop transitions, 11 changer transitions 1/102 dead transitions. [2022-09-16 11:50:12,953 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 102 transitions, 297 flow [2022-09-16 11:50:12,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:50:12,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:50:12,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 455 transitions. [2022-09-16 11:50:12,970 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8125 [2022-09-16 11:50:12,971 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 455 transitions. [2022-09-16 11:50:12,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 455 transitions. [2022-09-16 11:50:12,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:50:12,976 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 455 transitions. [2022-09-16 11:50:12,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:12,989 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 112.0) internal successors, (672), 6 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:12,990 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 112.0) internal successors, (672), 6 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:12,991 INFO L175 Difference]: Start difference. First operand has 96 places, 93 transitions, 198 flow. Second operand 5 states and 455 transitions. [2022-09-16 11:50:12,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 102 transitions, 297 flow [2022-09-16 11:50:12,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 102 transitions, 287 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:50:13,003 INFO L231 Difference]: Finished difference. Result has 98 places, 95 transitions, 256 flow [2022-09-16 11:50:13,005 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=256, PETRI_PLACES=98, PETRI_TRANSITIONS=95} [2022-09-16 11:50:13,008 INFO L287 CegarLoopForPetriNet]: 96 programPoint places, 2 predicate places. [2022-09-16 11:50:13,008 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 95 transitions, 256 flow [2022-09-16 11:50:13,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.6) internal successors, (418), 5 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:13,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:50:13,010 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] [2022-09-16 11:50:13,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:50:13,010 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-09-16 11:50:13,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:50:13,011 INFO L85 PathProgramCache]: Analyzing trace with hash 634735632, now seen corresponding path program 1 times [2022-09-16 11:50:13,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:50:13,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882633573] [2022-09-16 11:50:13,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:13,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:50:13,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:13,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:50:13,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:50:13,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882633573] [2022-09-16 11:50:13,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882633573] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:50:13,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:50:13,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:50:13,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454432947] [2022-09-16 11:50:13,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:50:13,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-16 11:50:13,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:50:13,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-16 11:50:13,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-09-16 11:50:13,130 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 112 [2022-09-16 11:50:13,131 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 95 transitions, 256 flow. Second operand has 5 states, 5 states have (on average 83.8) internal successors, (419), 5 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:13,132 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:50:13,134 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 112 [2022-09-16 11:50:13,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:50:13,296 INFO L130 PetriNetUnfolder]: 306/731 cut-off events. [2022-09-16 11:50:13,301 INFO L131 PetriNetUnfolder]: For 361/447 co-relation queries the response was YES. [2022-09-16 11:50:13,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1733 conditions, 731 events. 306/731 cut-off events. For 361/447 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4345 event pairs, 64 based on Foata normal form. 16/641 useless extension candidates. Maximal degree in co-relation 1585. Up to 246 conditions per place. [2022-09-16 11:50:13,309 INFO L137 encePairwiseOnDemand]: 106/112 looper letters, 36 selfloop transitions, 5 changer transitions 0/107 dead transitions. [2022-09-16 11:50:13,309 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 107 transitions, 385 flow [2022-09-16 11:50:13,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:50:13,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:50:13,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 443 transitions. [2022-09-16 11:50:13,311 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7910714285714285 [2022-09-16 11:50:13,311 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 443 transitions. [2022-09-16 11:50:13,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 443 transitions. [2022-09-16 11:50:13,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:50:13,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 443 transitions. [2022-09-16 11:50:13,313 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 88.6) internal successors, (443), 5 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:13,315 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 112.0) internal successors, (672), 6 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:13,316 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 112.0) internal successors, (672), 6 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:13,316 INFO L175 Difference]: Start difference. First operand has 98 places, 95 transitions, 256 flow. Second operand 5 states and 443 transitions. [2022-09-16 11:50:13,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 107 transitions, 385 flow [2022-09-16 11:50:13,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 107 transitions, 381 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:50:13,322 INFO L231 Difference]: Finished difference. Result has 101 places, 97 transitions, 278 flow [2022-09-16 11:50:13,322 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=278, PETRI_PLACES=101, PETRI_TRANSITIONS=97} [2022-09-16 11:50:13,323 INFO L287 CegarLoopForPetriNet]: 96 programPoint places, 5 predicate places. [2022-09-16 11:50:13,323 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 97 transitions, 278 flow [2022-09-16 11:50:13,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.8) internal successors, (419), 5 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:13,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:50:13,324 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] [2022-09-16 11:50:13,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-16 11:50:13,324 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-09-16 11:50:13,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:50:13,324 INFO L85 PathProgramCache]: Analyzing trace with hash 634735598, now seen corresponding path program 1 times [2022-09-16 11:50:13,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:50:13,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437845450] [2022-09-16 11:50:13,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:13,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:50:13,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:13,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:50:13,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:50:13,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437845450] [2022-09-16 11:50:13,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437845450] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:50:13,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:50:13,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:50:13,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915073071] [2022-09-16 11:50:13,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:50:13,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:50:13,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:50:13,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:50:13,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:50:13,416 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 112 [2022-09-16 11:50:13,417 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 97 transitions, 278 flow. Second operand has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:13,417 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:50:13,417 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 112 [2022-09-16 11:50:13,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:50:13,560 INFO L130 PetriNetUnfolder]: 323/789 cut-off events. [2022-09-16 11:50:13,560 INFO L131 PetriNetUnfolder]: For 492/512 co-relation queries the response was YES. [2022-09-16 11:50:13,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1744 conditions, 789 events. 323/789 cut-off events. For 492/512 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4714 event pairs, 139 based on Foata normal form. 76/706 useless extension candidates. Maximal degree in co-relation 1619. Up to 465 conditions per place. [2022-09-16 11:50:13,568 INFO L137 encePairwiseOnDemand]: 107/112 looper letters, 22 selfloop transitions, 3 changer transitions 0/93 dead transitions. [2022-09-16 11:50:13,568 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 93 transitions, 308 flow [2022-09-16 11:50:13,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:50:13,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:50:13,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 355 transitions. [2022-09-16 11:50:13,570 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7924107142857143 [2022-09-16 11:50:13,570 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 355 transitions. [2022-09-16 11:50:13,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 355 transitions. [2022-09-16 11:50:13,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:50:13,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 355 transitions. [2022-09-16 11:50:13,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 88.75) internal successors, (355), 4 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:13,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 112.0) internal successors, (560), 5 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:13,573 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 112.0) internal successors, (560), 5 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:13,573 INFO L175 Difference]: Start difference. First operand has 101 places, 97 transitions, 278 flow. Second operand 4 states and 355 transitions. [2022-09-16 11:50:13,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 93 transitions, 308 flow [2022-09-16 11:50:13,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 93 transitions, 304 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:50:13,578 INFO L231 Difference]: Finished difference. Result has 100 places, 93 transitions, 260 flow [2022-09-16 11:50:13,578 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=260, PETRI_PLACES=100, PETRI_TRANSITIONS=93} [2022-09-16 11:50:13,580 INFO L287 CegarLoopForPetriNet]: 96 programPoint places, 4 predicate places. [2022-09-16 11:50:13,580 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 93 transitions, 260 flow [2022-09-16 11:50:13,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:13,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:50:13,581 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:50:13,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-16 11:50:13,581 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-09-16 11:50:13,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:50:13,582 INFO L85 PathProgramCache]: Analyzing trace with hash -614481166, now seen corresponding path program 1 times [2022-09-16 11:50:13,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:50:13,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867237180] [2022-09-16 11:50:13,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:13,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:50:13,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:13,669 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:50:13,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:50:13,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867237180] [2022-09-16 11:50:13,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867237180] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:50:13,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:50:13,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-09-16 11:50:13,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599119710] [2022-09-16 11:50:13,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:50:13,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-16 11:50:13,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:50:13,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-16 11:50:13,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-09-16 11:50:13,675 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 112 [2022-09-16 11:50:13,676 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 93 transitions, 260 flow. Second operand has 5 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:13,676 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:50:13,676 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 112 [2022-09-16 11:50:13,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:50:13,855 INFO L130 PetriNetUnfolder]: 589/1357 cut-off events. [2022-09-16 11:50:13,855 INFO L131 PetriNetUnfolder]: For 589/607 co-relation queries the response was YES. [2022-09-16 11:50:13,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2971 conditions, 1357 events. 589/1357 cut-off events. For 589/607 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 8536 event pairs, 87 based on Foata normal form. 31/1100 useless extension candidates. Maximal degree in co-relation 2930. Up to 512 conditions per place. [2022-09-16 11:50:13,868 INFO L137 encePairwiseOnDemand]: 99/112 looper letters, 25 selfloop transitions, 14 changer transitions 0/107 dead transitions. [2022-09-16 11:50:13,868 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 107 transitions, 391 flow [2022-09-16 11:50:13,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:50:13,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 11:50:13,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 533 transitions. [2022-09-16 11:50:13,870 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7931547619047619 [2022-09-16 11:50:13,870 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 533 transitions. [2022-09-16 11:50:13,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 533 transitions. [2022-09-16 11:50:13,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:50:13,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 533 transitions. [2022-09-16 11:50:13,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 88.83333333333333) internal successors, (533), 6 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:13,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 112.0) internal successors, (784), 7 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:13,874 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 112.0) internal successors, (784), 7 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:13,874 INFO L175 Difference]: Start difference. First operand has 100 places, 93 transitions, 260 flow. Second operand 6 states and 533 transitions. [2022-09-16 11:50:13,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 107 transitions, 391 flow [2022-09-16 11:50:13,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 107 transitions, 385 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 11:50:13,880 INFO L231 Difference]: Finished difference. Result has 104 places, 102 transitions, 361 flow [2022-09-16 11:50:13,881 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=361, PETRI_PLACES=104, PETRI_TRANSITIONS=102} [2022-09-16 11:50:13,885 INFO L287 CegarLoopForPetriNet]: 96 programPoint places, 8 predicate places. [2022-09-16 11:50:13,885 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 102 transitions, 361 flow [2022-09-16 11:50:13,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:13,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:50:13,887 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:50:13,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-16 11:50:13,887 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-09-16 11:50:13,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:50:13,888 INFO L85 PathProgramCache]: Analyzing trace with hash -614481167, now seen corresponding path program 1 times [2022-09-16 11:50:13,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:50:13,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133516762] [2022-09-16 11:50:13,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:13,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:50:13,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:13,959 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:50:13,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:50:13,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133516762] [2022-09-16 11:50:13,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133516762] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:50:13,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:50:13,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-16 11:50:13,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076929855] [2022-09-16 11:50:13,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:50:13,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:50:13,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:50:13,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:50:13,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:50:13,962 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 112 [2022-09-16 11:50:13,962 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 102 transitions, 361 flow. Second operand has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:13,963 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:50:13,963 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 112 [2022-09-16 11:50:13,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:50:14,100 INFO L130 PetriNetUnfolder]: 425/1120 cut-off events. [2022-09-16 11:50:14,101 INFO L131 PetriNetUnfolder]: For 1257/1293 co-relation queries the response was YES. [2022-09-16 11:50:14,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2858 conditions, 1120 events. 425/1120 cut-off events. For 1257/1293 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 6954 event pairs, 17 based on Foata normal form. 83/984 useless extension candidates. Maximal degree in co-relation 2707. Up to 569 conditions per place. [2022-09-16 11:50:14,111 INFO L137 encePairwiseOnDemand]: 104/112 looper letters, 29 selfloop transitions, 6 changer transitions 0/106 dead transitions. [2022-09-16 11:50:14,111 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 106 transitions, 444 flow [2022-09-16 11:50:14,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:50:14,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:50:14,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 284 transitions. [2022-09-16 11:50:14,112 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8452380952380952 [2022-09-16 11:50:14,112 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 284 transitions. [2022-09-16 11:50:14,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 284 transitions. [2022-09-16 11:50:14,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:50:14,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 284 transitions. [2022-09-16 11:50:14,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:14,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:14,115 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:14,115 INFO L175 Difference]: Start difference. First operand has 104 places, 102 transitions, 361 flow. Second operand 3 states and 284 transitions. [2022-09-16 11:50:14,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 106 transitions, 444 flow [2022-09-16 11:50:14,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 106 transitions, 439 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 11:50:14,121 INFO L231 Difference]: Finished difference. Result has 102 places, 102 transitions, 382 flow [2022-09-16 11:50:14,121 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=382, PETRI_PLACES=102, PETRI_TRANSITIONS=102} [2022-09-16 11:50:14,123 INFO L287 CegarLoopForPetriNet]: 96 programPoint places, 6 predicate places. [2022-09-16 11:50:14,123 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 102 transitions, 382 flow [2022-09-16 11:50:14,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:14,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:50:14,124 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:50:14,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-16 11:50:14,124 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-09-16 11:50:14,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:50:14,125 INFO L85 PathProgramCache]: Analyzing trace with hash -614481201, now seen corresponding path program 1 times [2022-09-16 11:50:14,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:50:14,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015250974] [2022-09-16 11:50:14,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:14,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:50:14,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:14,231 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:50:14,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:50:14,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015250974] [2022-09-16 11:50:14,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015250974] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:50:14,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:50:14,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-09-16 11:50:14,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240399523] [2022-09-16 11:50:14,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:50:14,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:50:14,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:50:14,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:50:14,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:50:14,235 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 112 [2022-09-16 11:50:14,236 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 102 transitions, 382 flow. Second operand has 4 states, 4 states have (on average 88.25) internal successors, (353), 4 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:14,236 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:50:14,236 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 112 [2022-09-16 11:50:14,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:50:14,384 INFO L130 PetriNetUnfolder]: 302/888 cut-off events. [2022-09-16 11:50:14,385 INFO L131 PetriNetUnfolder]: For 1170/1219 co-relation queries the response was YES. [2022-09-16 11:50:14,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2326 conditions, 888 events. 302/888 cut-off events. For 1170/1219 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 5679 event pairs, 17 based on Foata normal form. 37/801 useless extension candidates. Maximal degree in co-relation 2170. Up to 220 conditions per place. [2022-09-16 11:50:14,394 INFO L137 encePairwiseOnDemand]: 107/112 looper letters, 51 selfloop transitions, 5 changer transitions 0/125 dead transitions. [2022-09-16 11:50:14,395 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 125 transitions, 643 flow [2022-09-16 11:50:14,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:50:14,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:50:14,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 377 transitions. [2022-09-16 11:50:14,396 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8415178571428571 [2022-09-16 11:50:14,397 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 377 transitions. [2022-09-16 11:50:14,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 377 transitions. [2022-09-16 11:50:14,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:50:14,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 377 transitions. [2022-09-16 11:50:14,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.25) internal successors, (377), 4 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:14,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 112.0) internal successors, (560), 5 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:14,399 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 112.0) internal successors, (560), 5 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:14,399 INFO L175 Difference]: Start difference. First operand has 102 places, 102 transitions, 382 flow. Second operand 4 states and 377 transitions. [2022-09-16 11:50:14,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 125 transitions, 643 flow [2022-09-16 11:50:14,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 125 transitions, 630 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-09-16 11:50:14,404 INFO L231 Difference]: Finished difference. Result has 106 places, 102 transitions, 395 flow [2022-09-16 11:50:14,404 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=395, PETRI_PLACES=106, PETRI_TRANSITIONS=102} [2022-09-16 11:50:14,406 INFO L287 CegarLoopForPetriNet]: 96 programPoint places, 10 predicate places. [2022-09-16 11:50:14,407 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 102 transitions, 395 flow [2022-09-16 11:50:14,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.25) internal successors, (353), 4 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:14,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:50:14,407 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] [2022-09-16 11:50:14,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-16 11:50:14,407 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-09-16 11:50:14,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:50:14,408 INFO L85 PathProgramCache]: Analyzing trace with hash -285502733, now seen corresponding path program 1 times [2022-09-16 11:50:14,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:50:14,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010309164] [2022-09-16 11:50:14,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:14,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:50:14,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:14,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:50:14,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:50:14,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010309164] [2022-09-16 11:50:14,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010309164] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:50:14,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:50:14,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-09-16 11:50:14,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278583658] [2022-09-16 11:50:14,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:50:14,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-16 11:50:14,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:50:14,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-16 11:50:14,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-09-16 11:50:14,483 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 112 [2022-09-16 11:50:14,483 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 102 transitions, 395 flow. Second operand has 5 states, 5 states have (on average 83.8) internal successors, (419), 5 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:14,483 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:50:14,484 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 112 [2022-09-16 11:50:14,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:50:14,631 INFO L130 PetriNetUnfolder]: 411/1123 cut-off events. [2022-09-16 11:50:14,631 INFO L131 PetriNetUnfolder]: For 1461/1492 co-relation queries the response was YES. [2022-09-16 11:50:14,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2930 conditions, 1123 events. 411/1123 cut-off events. For 1461/1492 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 7389 event pairs, 111 based on Foata normal form. 21/937 useless extension candidates. Maximal degree in co-relation 2767. Up to 398 conditions per place. [2022-09-16 11:50:14,642 INFO L137 encePairwiseOnDemand]: 102/112 looper letters, 31 selfloop transitions, 12 changer transitions 0/111 dead transitions. [2022-09-16 11:50:14,642 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 111 transitions, 524 flow [2022-09-16 11:50:14,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:50:14,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:50:14,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 440 transitions. [2022-09-16 11:50:14,644 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7857142857142857 [2022-09-16 11:50:14,644 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 440 transitions. [2022-09-16 11:50:14,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 440 transitions. [2022-09-16 11:50:14,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:50:14,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 440 transitions. [2022-09-16 11:50:14,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 88.0) internal successors, (440), 5 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:14,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 112.0) internal successors, (672), 6 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:14,647 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 112.0) internal successors, (672), 6 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:14,647 INFO L175 Difference]: Start difference. First operand has 106 places, 102 transitions, 395 flow. Second operand 5 states and 440 transitions. [2022-09-16 11:50:14,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 111 transitions, 524 flow [2022-09-16 11:50:14,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 111 transitions, 524 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-16 11:50:14,651 INFO L231 Difference]: Finished difference. Result has 112 places, 105 transitions, 467 flow [2022-09-16 11:50:14,651 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=467, PETRI_PLACES=112, PETRI_TRANSITIONS=105} [2022-09-16 11:50:14,652 INFO L287 CegarLoopForPetriNet]: 96 programPoint places, 16 predicate places. [2022-09-16 11:50:14,652 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 105 transitions, 467 flow [2022-09-16 11:50:14,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.8) internal successors, (419), 5 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:14,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:50:14,652 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] [2022-09-16 11:50:14,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-16 11:50:14,653 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-09-16 11:50:14,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:50:14,653 INFO L85 PathProgramCache]: Analyzing trace with hash -140340782, now seen corresponding path program 1 times [2022-09-16 11:50:14,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:50:14,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502460785] [2022-09-16 11:50:14,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:14,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:50:14,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:14,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:50:14,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:50:14,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502460785] [2022-09-16 11:50:14,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502460785] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:50:14,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:50:14,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-16 11:50:14,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079535201] [2022-09-16 11:50:14,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:50:14,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-16 11:50:14,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:50:14,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-16 11:50:14,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-09-16 11:50:14,809 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 112 [2022-09-16 11:50:14,809 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 105 transitions, 467 flow. Second operand has 7 states, 7 states have (on average 68.85714285714286) internal successors, (482), 7 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:14,809 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:50:14,810 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 112 [2022-09-16 11:50:14,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:50:15,408 INFO L130 PetriNetUnfolder]: 2003/4034 cut-off events. [2022-09-16 11:50:15,409 INFO L131 PetriNetUnfolder]: For 6917/6917 co-relation queries the response was YES. [2022-09-16 11:50:15,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11641 conditions, 4034 events. 2003/4034 cut-off events. For 6917/6917 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 31238 event pairs, 213 based on Foata normal form. 78/3726 useless extension candidates. Maximal degree in co-relation 11405. Up to 1864 conditions per place. [2022-09-16 11:50:15,495 INFO L137 encePairwiseOnDemand]: 98/112 looper letters, 81 selfloop transitions, 20 changer transitions 0/151 dead transitions. [2022-09-16 11:50:15,495 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 151 transitions, 888 flow [2022-09-16 11:50:15,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:50:15,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:50:15,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 545 transitions. [2022-09-16 11:50:15,497 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6951530612244898 [2022-09-16 11:50:15,497 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 545 transitions. [2022-09-16 11:50:15,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 545 transitions. [2022-09-16 11:50:15,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:50:15,498 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 545 transitions. [2022-09-16 11:50:15,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 77.85714285714286) internal successors, (545), 7 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:15,500 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 112.0) internal successors, (896), 8 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:15,501 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 112.0) internal successors, (896), 8 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:15,501 INFO L175 Difference]: Start difference. First operand has 112 places, 105 transitions, 467 flow. Second operand 7 states and 545 transitions. [2022-09-16 11:50:15,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 151 transitions, 888 flow [2022-09-16 11:50:15,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 151 transitions, 878 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-09-16 11:50:15,509 INFO L231 Difference]: Finished difference. Result has 120 places, 114 transitions, 637 flow [2022-09-16 11:50:15,509 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=637, PETRI_PLACES=120, PETRI_TRANSITIONS=114} [2022-09-16 11:50:15,510 INFO L287 CegarLoopForPetriNet]: 96 programPoint places, 24 predicate places. [2022-09-16 11:50:15,510 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 114 transitions, 637 flow [2022-09-16 11:50:15,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 68.85714285714286) internal successors, (482), 7 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:15,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:50:15,510 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] [2022-09-16 11:50:15,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-16 11:50:15,511 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-09-16 11:50:15,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:50:15,511 INFO L85 PathProgramCache]: Analyzing trace with hash 648926760, now seen corresponding path program 1 times [2022-09-16 11:50:15,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:50:15,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367279352] [2022-09-16 11:50:15,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:15,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:50:15,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:15,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:50:15,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:50:15,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367279352] [2022-09-16 11:50:15,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367279352] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:50:15,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:50:15,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-16 11:50:15,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798601061] [2022-09-16 11:50:15,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:50:15,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-16 11:50:15,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:50:15,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-16 11:50:15,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-09-16 11:50:15,656 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 112 [2022-09-16 11:50:15,657 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 114 transitions, 637 flow. Second operand has 7 states, 7 states have (on average 68.85714285714286) internal successors, (482), 7 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:15,657 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:50:15,657 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 112 [2022-09-16 11:50:15,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:50:16,749 INFO L130 PetriNetUnfolder]: 3660/7439 cut-off events. [2022-09-16 11:50:16,749 INFO L131 PetriNetUnfolder]: For 18816/18816 co-relation queries the response was YES. [2022-09-16 11:50:16,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22612 conditions, 7439 events. 3660/7439 cut-off events. For 18816/18816 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 64210 event pairs, 911 based on Foata normal form. 163/7196 useless extension candidates. Maximal degree in co-relation 17856. Up to 2700 conditions per place. [2022-09-16 11:50:16,828 INFO L137 encePairwiseOnDemand]: 100/112 looper letters, 95 selfloop transitions, 34 changer transitions 0/179 dead transitions. [2022-09-16 11:50:16,828 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 179 transitions, 1319 flow [2022-09-16 11:50:16,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:50:16,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:50:16,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 548 transitions. [2022-09-16 11:50:16,830 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6989795918367347 [2022-09-16 11:50:16,831 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 548 transitions. [2022-09-16 11:50:16,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 548 transitions. [2022-09-16 11:50:16,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:50:16,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 548 transitions. [2022-09-16 11:50:16,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 78.28571428571429) internal successors, (548), 7 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:16,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 112.0) internal successors, (896), 8 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:16,834 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 112.0) internal successors, (896), 8 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:16,834 INFO L175 Difference]: Start difference. First operand has 120 places, 114 transitions, 637 flow. Second operand 7 states and 548 transitions. [2022-09-16 11:50:16,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 179 transitions, 1319 flow [2022-09-16 11:50:16,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 179 transitions, 1295 flow, removed 6 selfloop flow, removed 4 redundant places. [2022-09-16 11:50:16,859 INFO L231 Difference]: Finished difference. Result has 125 places, 136 transitions, 1016 flow [2022-09-16 11:50:16,859 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=617, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1016, PETRI_PLACES=125, PETRI_TRANSITIONS=136} [2022-09-16 11:50:16,860 INFO L287 CegarLoopForPetriNet]: 96 programPoint places, 29 predicate places. [2022-09-16 11:50:16,860 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 136 transitions, 1016 flow [2022-09-16 11:50:16,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 68.85714285714286) internal successors, (482), 7 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:16,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:50:16,861 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:50:16,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-16 11:50:16,861 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-09-16 11:50:16,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:50:16,862 INFO L85 PathProgramCache]: Analyzing trace with hash 851120313, now seen corresponding path program 1 times [2022-09-16 11:50:16,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:50:16,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466276379] [2022-09-16 11:50:16,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:16,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:50:16,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:16,978 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:50:16,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:50:16,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466276379] [2022-09-16 11:50:16,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466276379] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:50:16,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578743641] [2022-09-16 11:50:16,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:16,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:50:16,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:50:16,983 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:50:16,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-09-16 11:50:17,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:17,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 8 conjunts are in the unsatisfiable core [2022-09-16 11:50:17,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:50:17,284 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:50:17,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:50:17,439 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:50:17,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578743641] provided 1 perfect and 1 imperfect interpolant sequences [2022-09-16 11:50:17,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-09-16 11:50:17,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6] total 13 [2022-09-16 11:50:17,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073131711] [2022-09-16 11:50:17,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:50:17,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:50:17,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:50:17,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:50:17,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2022-09-16 11:50:17,442 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 112 [2022-09-16 11:50:17,443 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 136 transitions, 1016 flow. Second operand has 6 states, 6 states have (on average 83.83333333333333) internal successors, (503), 6 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:17,443 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:50:17,443 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 112 [2022-09-16 11:50:17,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:50:17,813 INFO L130 PetriNetUnfolder]: 719/2374 cut-off events. [2022-09-16 11:50:17,813 INFO L131 PetriNetUnfolder]: For 12173/12193 co-relation queries the response was YES. [2022-09-16 11:50:17,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7721 conditions, 2374 events. 719/2374 cut-off events. For 12173/12193 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 19735 event pairs, 45 based on Foata normal form. 30/2222 useless extension candidates. Maximal degree in co-relation 4774. Up to 695 conditions per place. [2022-09-16 11:50:17,845 INFO L137 encePairwiseOnDemand]: 100/112 looper letters, 67 selfloop transitions, 30 changer transitions 0/165 dead transitions. [2022-09-16 11:50:17,845 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 165 transitions, 1498 flow [2022-09-16 11:50:17,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:50:17,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 11:50:17,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 531 transitions. [2022-09-16 11:50:17,847 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7901785714285714 [2022-09-16 11:50:17,847 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 531 transitions. [2022-09-16 11:50:17,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 531 transitions. [2022-09-16 11:50:17,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:50:17,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 531 transitions. [2022-09-16 11:50:17,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 88.5) internal successors, (531), 6 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 11:50:17,851 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 112.0) internal successors, (784), 7 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:17,851 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 112.0) internal successors, (784), 7 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:17,851 INFO L175 Difference]: Start difference. First operand has 125 places, 136 transitions, 1016 flow. Second operand 6 states and 531 transitions. [2022-09-16 11:50:17,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 165 transitions, 1498 flow [2022-09-16 11:50:17,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 165 transitions, 1471 flow, removed 10 selfloop flow, removed 3 redundant places. [2022-09-16 11:50:17,867 INFO L231 Difference]: Finished difference. Result has 130 places, 152 transitions, 1355 flow [2022-09-16 11:50:17,868 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=997, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1355, PETRI_PLACES=130, PETRI_TRANSITIONS=152} [2022-09-16 11:50:17,869 INFO L287 CegarLoopForPetriNet]: 96 programPoint places, 34 predicate places. [2022-09-16 11:50:17,869 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 152 transitions, 1355 flow [2022-09-16 11:50:17,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.83333333333333) internal successors, (503), 6 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:17,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:50:17,870 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 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] [2022-09-16 11:50:17,900 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-09-16 11:50:18,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-09-16 11:50:18,096 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-09-16 11:50:18,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:50:18,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1800600634, now seen corresponding path program 1 times [2022-09-16 11:50:18,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:50:18,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373750309] [2022-09-16 11:50:18,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:18,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:50:18,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:18,238 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:50:18,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:50:18,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373750309] [2022-09-16 11:50:18,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373750309] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:50:18,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249851490] [2022-09-16 11:50:18,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:18,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:50:18,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:50:18,244 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:50:18,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-09-16 11:50:18,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:18,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 10 conjunts are in the unsatisfiable core [2022-09-16 11:50:18,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:50:18,479 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:50:18,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:50:18,576 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-16 11:50:18,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249851490] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:50:18,576 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:50:18,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 15 [2022-09-16 11:50:18,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851810123] [2022-09-16 11:50:18,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:50:18,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-09-16 11:50:18,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:50:18,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-09-16 11:50:18,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2022-09-16 11:50:18,579 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 112 [2022-09-16 11:50:18,580 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 152 transitions, 1355 flow. Second operand has 16 states, 16 states have (on average 69.4375) internal successors, (1111), 16 states have internal predecessors, (1111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:18,580 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:50:18,581 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 112 [2022-09-16 11:50:18,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:50:21,167 INFO L130 PetriNetUnfolder]: 8730/17513 cut-off events. [2022-09-16 11:50:21,168 INFO L131 PetriNetUnfolder]: For 90318/90320 co-relation queries the response was YES. [2022-09-16 11:50:21,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60006 conditions, 17513 events. 8730/17513 cut-off events. For 90318/90320 co-relation queries the response was YES. Maximal size of possible extension queue 1040. Compared 170345 event pairs, 1119 based on Foata normal form. 531/17139 useless extension candidates. Maximal degree in co-relation 59687. Up to 3284 conditions per place. [2022-09-16 11:50:21,414 INFO L137 encePairwiseOnDemand]: 99/112 looper letters, 169 selfloop transitions, 94 changer transitions 0/313 dead transitions. [2022-09-16 11:50:21,414 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 313 transitions, 3225 flow [2022-09-16 11:50:21,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-09-16 11:50:21,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-09-16 11:50:21,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 953 transitions. [2022-09-16 11:50:21,417 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7090773809523809 [2022-09-16 11:50:21,417 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 953 transitions. [2022-09-16 11:50:21,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 953 transitions. [2022-09-16 11:50:21,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:50:21,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 953 transitions. [2022-09-16 11:50:21,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 79.41666666666667) internal successors, (953), 12 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:21,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 112.0) internal successors, (1456), 13 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:21,422 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 112.0) internal successors, (1456), 13 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:21,422 INFO L175 Difference]: Start difference. First operand has 130 places, 152 transitions, 1355 flow. Second operand 12 states and 953 transitions. [2022-09-16 11:50:21,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 313 transitions, 3225 flow [2022-09-16 11:50:21,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 313 transitions, 3207 flow, removed 7 selfloop flow, removed 2 redundant places. [2022-09-16 11:50:21,506 INFO L231 Difference]: Finished difference. Result has 145 places, 211 transitions, 2628 flow [2022-09-16 11:50:21,506 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=1343, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2628, PETRI_PLACES=145, PETRI_TRANSITIONS=211} [2022-09-16 11:50:21,507 INFO L287 CegarLoopForPetriNet]: 96 programPoint places, 49 predicate places. [2022-09-16 11:50:21,507 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 211 transitions, 2628 flow [2022-09-16 11:50:21,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 69.4375) internal successors, (1111), 16 states have internal predecessors, (1111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:21,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:50:21,508 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:50:21,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-09-16 11:50:21,723 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,SelfDestructingSolverStorable10 [2022-09-16 11:50:21,724 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-09-16 11:50:21,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:50:21,724 INFO L85 PathProgramCache]: Analyzing trace with hash 589704161, now seen corresponding path program 1 times [2022-09-16 11:50:21,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:50:21,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973565662] [2022-09-16 11:50:21,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:21,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:50:21,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:21,882 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:50:21,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:50:21,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973565662] [2022-09-16 11:50:21,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973565662] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:50:21,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245266314] [2022-09-16 11:50:21,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:21,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:50:21,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:50:21,884 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:50:21,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-09-16 11:50:21,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:21,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 9 conjunts are in the unsatisfiable core [2022-09-16 11:50:21,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:50:22,183 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:50:22,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:50:22,284 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:50:22,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245266314] provided 1 perfect and 1 imperfect interpolant sequences [2022-09-16 11:50:22,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-09-16 11:50:22,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 17 [2022-09-16 11:50:22,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227589631] [2022-09-16 11:50:22,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:50:22,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-16 11:50:22,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:50:22,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-16 11:50:22,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2022-09-16 11:50:22,287 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 112 [2022-09-16 11:50:22,288 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 211 transitions, 2628 flow. Second operand has 7 states, 7 states have (on average 83.57142857142857) internal successors, (585), 7 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:22,288 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:50:22,288 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 112 [2022-09-16 11:50:22,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:50:23,124 INFO L130 PetriNetUnfolder]: 1954/6548 cut-off events. [2022-09-16 11:50:23,124 INFO L131 PetriNetUnfolder]: For 72876/73498 co-relation queries the response was YES. [2022-09-16 11:50:23,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25535 conditions, 6548 events. 1954/6548 cut-off events. For 72876/73498 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 68540 event pairs, 103 based on Foata normal form. 267/6286 useless extension candidates. Maximal degree in co-relation 16881. Up to 1277 conditions per place. [2022-09-16 11:50:23,217 INFO L137 encePairwiseOnDemand]: 99/112 looper letters, 130 selfloop transitions, 105 changer transitions 0/303 dead transitions. [2022-09-16 11:50:23,218 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 303 transitions, 4505 flow [2022-09-16 11:50:23,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:50:23,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:50:23,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 625 transitions. [2022-09-16 11:50:23,220 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7971938775510204 [2022-09-16 11:50:23,220 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 625 transitions. [2022-09-16 11:50:23,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 625 transitions. [2022-09-16 11:50:23,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:50:23,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 625 transitions. [2022-09-16 11:50:23,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 89.28571428571429) internal successors, (625), 7 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:23,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 112.0) internal successors, (896), 8 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:23,223 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 112.0) internal successors, (896), 8 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:23,223 INFO L175 Difference]: Start difference. First operand has 145 places, 211 transitions, 2628 flow. Second operand 7 states and 625 transitions. [2022-09-16 11:50:23,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 303 transitions, 4505 flow [2022-09-16 11:50:23,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 303 transitions, 4228 flow, removed 134 selfloop flow, removed 4 redundant places. [2022-09-16 11:50:23,334 INFO L231 Difference]: Finished difference. Result has 151 places, 273 transitions, 4011 flow [2022-09-16 11:50:23,334 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=2471, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4011, PETRI_PLACES=151, PETRI_TRANSITIONS=273} [2022-09-16 11:50:23,335 INFO L287 CegarLoopForPetriNet]: 96 programPoint places, 55 predicate places. [2022-09-16 11:50:23,335 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 273 transitions, 4011 flow [2022-09-16 11:50:23,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 83.57142857142857) internal successors, (585), 7 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:23,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:50:23,336 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:50:23,364 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-09-16 11:50:23,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:50:23,561 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-09-16 11:50:23,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:50:23,562 INFO L85 PathProgramCache]: Analyzing trace with hash 269803381, now seen corresponding path program 1 times [2022-09-16 11:50:23,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:50:23,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970289540] [2022-09-16 11:50:23,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:23,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:50:23,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:23,610 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:50:23,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:50:23,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970289540] [2022-09-16 11:50:23,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970289540] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:50:23,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:50:23,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-09-16 11:50:23,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962261454] [2022-09-16 11:50:23,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:50:23,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:50:23,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:50:23,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:50:23,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:50:23,614 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 112 [2022-09-16 11:50:23,615 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 273 transitions, 4011 flow. Second operand has 4 states, 4 states have (on average 88.75) internal successors, (355), 4 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:23,615 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:50:23,615 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 112 [2022-09-16 11:50:23,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:50:24,554 INFO L130 PetriNetUnfolder]: 1376/4685 cut-off events. [2022-09-16 11:50:24,555 INFO L131 PetriNetUnfolder]: For 43205/43464 co-relation queries the response was YES. [2022-09-16 11:50:24,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18011 conditions, 4685 events. 1376/4685 cut-off events. For 43205/43464 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 48973 event pairs, 231 based on Foata normal form. 248/4498 useless extension candidates. Maximal degree in co-relation 17742. Up to 969 conditions per place. [2022-09-16 11:50:24,614 INFO L137 encePairwiseOnDemand]: 107/112 looper letters, 230 selfloop transitions, 5 changer transitions 0/311 dead transitions. [2022-09-16 11:50:24,615 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 311 transitions, 5087 flow [2022-09-16 11:50:24,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:50:24,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:50:24,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 379 transitions. [2022-09-16 11:50:24,618 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8459821428571429 [2022-09-16 11:50:24,618 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 379 transitions. [2022-09-16 11:50:24,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 379 transitions. [2022-09-16 11:50:24,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:50:24,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 379 transitions. [2022-09-16 11:50:24,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.75) internal successors, (379), 4 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:24,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 112.0) internal successors, (560), 5 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:24,620 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 112.0) internal successors, (560), 5 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:24,620 INFO L175 Difference]: Start difference. First operand has 151 places, 273 transitions, 4011 flow. Second operand 4 states and 379 transitions. [2022-09-16 11:50:24,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 311 transitions, 5087 flow [2022-09-16 11:50:24,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 311 transitions, 4855 flow, removed 53 selfloop flow, removed 7 redundant places. [2022-09-16 11:50:24,716 INFO L231 Difference]: Finished difference. Result has 150 places, 230 transitions, 3045 flow [2022-09-16 11:50:24,716 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=3009, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=3045, PETRI_PLACES=150, PETRI_TRANSITIONS=230} [2022-09-16 11:50:24,717 INFO L287 CegarLoopForPetriNet]: 96 programPoint places, 54 predicate places. [2022-09-16 11:50:24,718 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 230 transitions, 3045 flow [2022-09-16 11:50:24,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.75) internal successors, (355), 4 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:24,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:50:24,718 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:50:24,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-09-16 11:50:24,718 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-09-16 11:50:24,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:50:24,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1666293672, now seen corresponding path program 1 times [2022-09-16 11:50:24,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:50:24,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095022387] [2022-09-16 11:50:24,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:24,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:50:24,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:24,784 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:50:24,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:50:24,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095022387] [2022-09-16 11:50:24,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095022387] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:50:24,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:50:24,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-09-16 11:50:24,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924223358] [2022-09-16 11:50:24,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:50:24,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:50:24,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:50:24,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:50:24,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:50:24,787 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 112 [2022-09-16 11:50:24,787 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 230 transitions, 3045 flow. Second operand has 4 states, 4 states have (on average 89.25) internal successors, (357), 4 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:24,787 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:50:24,788 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 112 [2022-09-16 11:50:24,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:50:25,273 INFO L130 PetriNetUnfolder]: 829/3058 cut-off events. [2022-09-16 11:50:25,274 INFO L131 PetriNetUnfolder]: For 24032/24032 co-relation queries the response was YES. [2022-09-16 11:50:25,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11430 conditions, 3058 events. 829/3058 cut-off events. For 24032/24032 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 29114 event pairs, 164 based on Foata normal form. 18/2798 useless extension candidates. Maximal degree in co-relation 11167. Up to 727 conditions per place. [2022-09-16 11:50:25,314 INFO L137 encePairwiseOnDemand]: 107/112 looper letters, 174 selfloop transitions, 7 changer transitions 0/254 dead transitions. [2022-09-16 11:50:25,314 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 254 transitions, 3764 flow [2022-09-16 11:50:25,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:50:25,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:50:25,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 375 transitions. [2022-09-16 11:50:25,316 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8370535714285714 [2022-09-16 11:50:25,316 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 375 transitions. [2022-09-16 11:50:25,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 375 transitions. [2022-09-16 11:50:25,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:50:25,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 375 transitions. [2022-09-16 11:50:25,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:25,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 112.0) internal successors, (560), 5 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:25,318 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 112.0) internal successors, (560), 5 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:25,319 INFO L175 Difference]: Start difference. First operand has 150 places, 230 transitions, 3045 flow. Second operand 4 states and 375 transitions. [2022-09-16 11:50:25,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 254 transitions, 3764 flow [2022-09-16 11:50:25,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 254 transitions, 3595 flow, removed 57 selfloop flow, removed 3 redundant places. [2022-09-16 11:50:25,380 INFO L231 Difference]: Finished difference. Result has 152 places, 200 transitions, 2357 flow [2022-09-16 11:50:25,380 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=2315, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2357, PETRI_PLACES=152, PETRI_TRANSITIONS=200} [2022-09-16 11:50:25,381 INFO L287 CegarLoopForPetriNet]: 96 programPoint places, 56 predicate places. [2022-09-16 11:50:25,381 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 200 transitions, 2357 flow [2022-09-16 11:50:25,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.25) internal successors, (357), 4 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:25,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:50:25,382 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:50:25,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-09-16 11:50:25,382 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-09-16 11:50:25,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:50:25,382 INFO L85 PathProgramCache]: Analyzing trace with hash 129618395, now seen corresponding path program 1 times [2022-09-16 11:50:25,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:50:25,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055742983] [2022-09-16 11:50:25,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:25,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:50:25,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:25,413 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-16 11:50:25,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:50:25,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055742983] [2022-09-16 11:50:25,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055742983] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:50:25,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:50:25,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:50:25,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882992095] [2022-09-16 11:50:25,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:50:25,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:50:25,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:50:25,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:50:25,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:50:25,416 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 112 [2022-09-16 11:50:25,416 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 200 transitions, 2357 flow. Second operand has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:25,416 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:50:25,417 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 112 [2022-09-16 11:50:25,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:50:25,917 INFO L130 PetriNetUnfolder]: 653/3260 cut-off events. [2022-09-16 11:50:25,917 INFO L131 PetriNetUnfolder]: For 23272/23338 co-relation queries the response was YES. [2022-09-16 11:50:25,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11259 conditions, 3260 events. 653/3260 cut-off events. For 23272/23338 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 31014 event pairs, 29 based on Foata normal form. 62/3029 useless extension candidates. Maximal degree in co-relation 10996. Up to 723 conditions per place. [2022-09-16 11:50:25,959 INFO L137 encePairwiseOnDemand]: 103/112 looper letters, 84 selfloop transitions, 56 changer transitions 1/217 dead transitions. [2022-09-16 11:50:25,959 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 217 transitions, 2815 flow [2022-09-16 11:50:25,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:50:25,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:50:25,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 376 transitions. [2022-09-16 11:50:25,960 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8392857142857143 [2022-09-16 11:50:25,960 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 376 transitions. [2022-09-16 11:50:25,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 376 transitions. [2022-09-16 11:50:25,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:50:25,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 376 transitions. [2022-09-16 11:50:25,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:25,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 112.0) internal successors, (560), 5 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:25,963 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 112.0) internal successors, (560), 5 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:25,963 INFO L175 Difference]: Start difference. First operand has 152 places, 200 transitions, 2357 flow. Second operand 4 states and 376 transitions. [2022-09-16 11:50:25,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 217 transitions, 2815 flow [2022-09-16 11:50:26,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 217 transitions, 2803 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-09-16 11:50:26,024 INFO L231 Difference]: Finished difference. Result has 156 places, 209 transitions, 2740 flow [2022-09-16 11:50:26,024 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=2292, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2740, PETRI_PLACES=156, PETRI_TRANSITIONS=209} [2022-09-16 11:50:26,025 INFO L287 CegarLoopForPetriNet]: 96 programPoint places, 60 predicate places. [2022-09-16 11:50:26,025 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 209 transitions, 2740 flow [2022-09-16 11:50:26,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:26,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:50:26,026 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 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] [2022-09-16 11:50:26,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-09-16 11:50:26,026 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-09-16 11:50:26,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:50:26,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1598301537, now seen corresponding path program 2 times [2022-09-16 11:50:26,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:50:26,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317583532] [2022-09-16 11:50:26,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:26,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:50:26,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:26,089 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 16 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-09-16 11:50:26,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:50:26,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317583532] [2022-09-16 11:50:26,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317583532] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:50:26,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078938754] [2022-09-16 11:50:26,090 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:50:26,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:50:26,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:50:26,091 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:50:26,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-09-16 11:50:26,195 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-09-16 11:50:26,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:50:26,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 10 conjunts are in the unsatisfiable core [2022-09-16 11:50:26,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:50:26,298 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 16 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-09-16 11:50:26,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:50:26,410 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 16 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-09-16 11:50:26,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078938754] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:50:26,410 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:50:26,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2022-09-16 11:50:26,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741199034] [2022-09-16 11:50:26,411 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:50:26,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-16 11:50:26,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:50:26,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-16 11:50:26,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-09-16 11:50:26,412 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 112 [2022-09-16 11:50:26,413 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 209 transitions, 2740 flow. Second operand has 7 states, 7 states have (on average 84.85714285714286) internal successors, (594), 7 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:26,413 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:50:26,413 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 112 [2022-09-16 11:50:26,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:50:26,915 INFO L130 PetriNetUnfolder]: 593/2590 cut-off events. [2022-09-16 11:50:26,915 INFO L131 PetriNetUnfolder]: For 26620/26673 co-relation queries the response was YES. [2022-09-16 11:50:26,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9895 conditions, 2590 events. 593/2590 cut-off events. For 26620/26673 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 22621 event pairs, 64 based on Foata normal form. 78/2461 useless extension candidates. Maximal degree in co-relation 8841. Up to 352 conditions per place. [2022-09-16 11:50:26,951 INFO L137 encePairwiseOnDemand]: 100/112 looper letters, 24 selfloop transitions, 126 changer transitions 0/223 dead transitions. [2022-09-16 11:50:26,951 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 223 transitions, 3135 flow [2022-09-16 11:50:26,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-16 11:50:26,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-16 11:50:26,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 709 transitions. [2022-09-16 11:50:26,955 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7912946428571429 [2022-09-16 11:50:26,956 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 709 transitions. [2022-09-16 11:50:26,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 709 transitions. [2022-09-16 11:50:26,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:50:26,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 709 transitions. [2022-09-16 11:50:26,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 88.625) internal successors, (709), 8 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:26,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 112.0) internal successors, (1008), 9 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 11:50:26,960 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 112.0) internal successors, (1008), 9 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 11:50:26,960 INFO L175 Difference]: Start difference. First operand has 156 places, 209 transitions, 2740 flow. Second operand 8 states and 709 transitions. [2022-09-16 11:50:26,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 223 transitions, 3135 flow [2022-09-16 11:50:27,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 223 transitions, 3096 flow, removed 12 selfloop flow, removed 3 redundant places. [2022-09-16 11:50:27,009 INFO L231 Difference]: Finished difference. Result has 160 places, 213 transitions, 3147 flow [2022-09-16 11:50:27,010 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=2533, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3147, PETRI_PLACES=160, PETRI_TRANSITIONS=213} [2022-09-16 11:50:27,010 INFO L287 CegarLoopForPetriNet]: 96 programPoint places, 64 predicate places. [2022-09-16 11:50:27,010 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 213 transitions, 3147 flow [2022-09-16 11:50:27,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 84.85714285714286) internal successors, (594), 7 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:27,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:50:27,011 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 3, 3, 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] [2022-09-16 11:50:27,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-09-16 11:50:27,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-09-16 11:50:27,212 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-09-16 11:50:27,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:50:27,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1906340926, now seen corresponding path program 1 times [2022-09-16 11:50:27,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:50:27,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782157115] [2022-09-16 11:50:27,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:27,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:50:27,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:27,297 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 31 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-09-16 11:50:27,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:50:27,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782157115] [2022-09-16 11:50:27,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782157115] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:50:27,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116249906] [2022-09-16 11:50:27,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:27,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:50:27,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:50:27,299 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:50:27,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-09-16 11:50:27,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:27,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 9 conjunts are in the unsatisfiable core [2022-09-16 11:50:27,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:50:27,408 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 31 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-09-16 11:50:27,408 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:50:27,466 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 31 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-09-16 11:50:27,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116249906] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:50:27,466 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:50:27,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2022-09-16 11:50:27,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358580308] [2022-09-16 11:50:27,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:50:27,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:50:27,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:50:27,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:50:27,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:50:27,468 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 112 [2022-09-16 11:50:27,469 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 213 transitions, 3147 flow. Second operand has 6 states, 6 states have (on average 88.0) internal successors, (528), 6 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:27,469 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:50:27,469 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 112 [2022-09-16 11:50:27,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:50:27,880 INFO L130 PetriNetUnfolder]: 538/2797 cut-off events. [2022-09-16 11:50:27,880 INFO L131 PetriNetUnfolder]: For 28545/28617 co-relation queries the response was YES. [2022-09-16 11:50:27,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10363 conditions, 2797 events. 538/2797 cut-off events. For 28545/28617 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 26312 event pairs, 21 based on Foata normal form. 78/2622 useless extension candidates. Maximal degree in co-relation 10087. Up to 340 conditions per place. [2022-09-16 11:50:27,896 INFO L137 encePairwiseOnDemand]: 104/112 looper letters, 0 selfloop transitions, 0 changer transitions 215/215 dead transitions. [2022-09-16 11:50:27,896 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 215 transitions, 3103 flow [2022-09-16 11:50:27,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:50:27,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 11:50:27,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 557 transitions. [2022-09-16 11:50:27,899 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8288690476190477 [2022-09-16 11:50:27,900 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 557 transitions. [2022-09-16 11:50:27,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 557 transitions. [2022-09-16 11:50:27,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:50:27,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 557 transitions. [2022-09-16 11:50:27,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 92.83333333333333) internal successors, (557), 6 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:27,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 112.0) internal successors, (784), 7 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:27,903 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 112.0) internal successors, (784), 7 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:27,903 INFO L175 Difference]: Start difference. First operand has 160 places, 213 transitions, 3147 flow. Second operand 6 states and 557 transitions. [2022-09-16 11:50:27,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 215 transitions, 3103 flow [2022-09-16 11:50:27,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 215 transitions, 2752 flow, removed 52 selfloop flow, removed 13 redundant places. [2022-09-16 11:50:27,949 INFO L231 Difference]: Finished difference. Result has 150 places, 0 transitions, 0 flow [2022-09-16 11:50:27,949 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=2382, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=150, PETRI_TRANSITIONS=0} [2022-09-16 11:50:27,950 INFO L287 CegarLoopForPetriNet]: 96 programPoint places, 54 predicate places. [2022-09-16 11:50:27,950 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 0 transitions, 0 flow [2022-09-16 11:50:27,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 88.0) internal successors, (528), 6 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:27,953 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 19 remaining) [2022-09-16 11:50:27,954 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2022-09-16 11:50:27,954 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2022-09-16 11:50:27,954 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2022-09-16 11:50:27,954 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2022-09-16 11:50:27,954 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2022-09-16 11:50:27,954 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2022-09-16 11:50:27,954 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2022-09-16 11:50:27,954 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 19 remaining) [2022-09-16 11:50:27,955 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 19 remaining) [2022-09-16 11:50:27,955 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 19 remaining) [2022-09-16 11:50:27,955 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 19 remaining) [2022-09-16 11:50:27,955 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 19 remaining) [2022-09-16 11:50:27,955 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2022-09-16 11:50:27,955 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2022-09-16 11:50:27,955 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2022-09-16 11:50:27,955 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2022-09-16 11:50:27,955 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2022-09-16 11:50:27,956 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2022-09-16 11:50:27,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-09-16 11:50:28,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-09-16 11:50:28,163 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:50:28,167 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-09-16 11:50:28,167 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-09-16 11:50:28,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 11:50:28 BasicIcfg [2022-09-16 11:50:28,172 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-09-16 11:50:28,172 INFO L158 Benchmark]: Toolchain (without parser) took 17059.84ms. Allocated memory was 197.1MB in the beginning and 1.7GB in the end (delta: 1.5GB). Free memory was 140.9MB in the beginning and 1.4GB in the end (delta: -1.2GB). Peak memory consumption was 1.3GB. Max. memory is 8.0GB. [2022-09-16 11:50:28,172 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 197.1MB. Free memory is still 157.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-09-16 11:50:28,172 INFO L158 Benchmark]: CACSL2BoogieTranslator took 231.84ms. Allocated memory is still 197.1MB. Free memory was 140.7MB in the beginning and 171.6MB in the end (delta: -30.9MB). Peak memory consumption was 11.2MB. Max. memory is 8.0GB. [2022-09-16 11:50:28,173 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.36ms. Allocated memory is still 197.1MB. Free memory was 171.6MB in the beginning and 169.9MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-09-16 11:50:28,173 INFO L158 Benchmark]: Boogie Preprocessor took 44.23ms. Allocated memory is still 197.1MB. Free memory was 169.9MB in the beginning and 168.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-16 11:50:28,173 INFO L158 Benchmark]: RCFGBuilder took 493.17ms. Allocated memory is still 197.1MB. Free memory was 168.5MB in the beginning and 152.5MB in the end (delta: 16.0MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2022-09-16 11:50:28,173 INFO L158 Benchmark]: TraceAbstraction took 16240.95ms. Allocated memory was 197.1MB in the beginning and 1.7GB in the end (delta: 1.5GB). Free memory was 151.7MB in the beginning and 1.4GB in the end (delta: -1.2GB). Peak memory consumption was 1.3GB. Max. memory is 8.0GB. [2022-09-16 11:50:28,175 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 197.1MB. Free memory is still 157.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 231.84ms. Allocated memory is still 197.1MB. Free memory was 140.7MB in the beginning and 171.6MB in the end (delta: -30.9MB). Peak memory consumption was 11.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 35.36ms. Allocated memory is still 197.1MB. Free memory was 171.6MB in the beginning and 169.9MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 44.23ms. Allocated memory is still 197.1MB. Free memory was 169.9MB in the beginning and 168.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 493.17ms. Allocated memory is still 197.1MB. Free memory was 168.5MB in the beginning and 152.5MB in the end (delta: 16.0MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * TraceAbstraction took 16240.95ms. Allocated memory was 197.1MB in the beginning and 1.7GB in the end (delta: 1.5GB). Free memory was 151.7MB in the beginning and 1.4GB in the end (delta: -1.2GB). Peak memory consumption was 1.3GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 48]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 48]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 53]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 53]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 72]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 72]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 77]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 77]: 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 7 procedures, 141 locations, 19 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: 16.1s, OverallIterations: 17, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 11.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 567 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 567 mSDsluCounter, 337 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 496 mSDsCounter, 250 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1298 IncrementalHoareTripleChecker+Invalid, 1548 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 250 mSolverCounterUnsat, 130 mSDtfsCounter, 1298 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 773 GetRequests, 660 SyntacticMatches, 15 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4011occurred in iteration=12, InterpolantAutomatonStates: 97, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 1285 NumberOfCodeBlocks, 1285 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 1598 ConstructedInterpolants, 0 QuantifiedInterpolants, 6450 SizeOfPredicates, 16 NumberOfNonLiveVariables, 846 ConjunctsInSsa, 46 ConjunctsInUnsatCore, 27 InterpolantComputations, 14 PerfectInterpolantSequences, 242/326 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-09-16 11:50:28,202 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...